Specification For SCADA of Electrical System
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Specification for SCADA of Electrical System
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Version 2.0
Contents 1.
INTRODUCT INTRODUCTION.... ION......... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ .............. .............. ......5 5
1.1 PURPO PURPOSE.. SE........ ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ................... ........................... .............5 5 1.2 APPLIC APPLICABL ABLE E STAND STANDARD ARDS, S, SPECIFICA SPECIFICATIO TIONS NS AND AND CODES. CODES....... ............ ........... ........... ............ ............ .............. .................... ............5 5 1.2.1 PDO Standards.............................................................. Standards.......................................................................................................................... .................................................................. ......5 5 1.2.2 SIOP/S SIOP/SIEP IEP Stan Standard dards..... s........... ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ............. ........................ .................... ...5 5 1.2.3 Internat International ional Standar Standards.... ds.......... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ................ .............. ...5 5 1.31.3.1COMPLIA COMP LIANCE NCE WIT H STAND STof ANDARD ARDS... S........ ........... ............ ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ............. ................ .........6 6 Langua Language ge and aWITH nd Units Measur Measurement... ement......... ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ................ .......................... ................. . 6 1.4 PRODUC PRODUCT/AS T/ASSET SET WARRANT ARRANTY.... Y......... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ............ ............ ............ ........... .....6 6 1.4.1 Descrip Description tion of SCADA SCADA sy system.... stem.......... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ............... .........7 7 1.4.1.1
1.4.2 1.4.3 1.4.4 1.4.4.1 1.4.4.2 1.4.4.3 1.4.4.4 1.4.4.5
2.
Existi Existing ng SCA SCADA DA Sys System tem In Infor formati mation..... on............... .................... .................... .................... .................... .................... .................... .................... ............................. ...................7 7
Design an and d Constru Construction.... ction.......... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ................ ............7 Service Conditions........................................................................................................................... Conditions...........................................................................................................................8 8 SCADA System Philosophy.............................................................................................................. Philosophy..............................................................................................................8 8 Rem Remote ote SCADA SCADA Sys System.. tem............ .................... .................... .................... .................... .................... .................... ................... ................... .................... .................... ........................ ..............8 8 Alar Alarms ms and Ind Indicat ications... ions............. .................... .................... ................... ................... .................... .................... .................... .................... .................... .................................. ........................ 8 Ana Analogu loguee Measu Measuremen rement........... t..................... .................... .................... .................... .................... .................... .................... .................... .................... .................................. ........................8 8 Ener Energy gy Measu Measuremen rement............ t...................... .................... .................... .................... .................... .................... .................... .................... .................... ..................................... ...........................9 9 Con Control trol Outp Outputs........ uts.................. ................... ................... .................... .................... .................... .................... .................... .................... .................... ........................................ ..............................9 9
SCOPE...... SCOPE........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ............ ......10 10
2.1 SCADA SCADA SYSTE SYSTEM M EQUIPM EQUIPMENT.. ENT........ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ............ ......10 10 2.1.1 SCADA Remote Terminal erminal Unit (RTU) and Isolatio Isolation n Pan Panel...... el............ ............ ............ ........... ........... ............ ........... ................. ............10 10 2.1.1.1 2.1.1.2 2.1.1.3 2.1.1.4 2.1.1.5 2.1.1.6
2.1.2 2.1.2.1 2.1.2.2 2.1.2.3
2.1.3 2.1.3.1 2.1.3.2
2.1.4 2.1.4.1 2.1.4.2 2.1.4.3 2.1.4.4
RTU Desi Design..... gn............... ................... ................... .................... .................... .................... .................... .................... .................... .................... .................... ..................................... ........................... 10 RTU Start-u Start-up........ p................. ................... .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... ....................... ............. 11 RTU Diag Diagnost nostics.... ics.............. .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... .............................. ....................12 12 Status / D Data ata Che Check.... ck.............. .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... ................ ......12 12 Ti Time me Syn Synchr chronis onisation. ation........... .................... .................... .................... .................... .................... .................... .................... .................... .................... ................... ................... ................. .......12 12 Con Construc struction tion O Off RTU RTU an and d Is Isolat olation ion P Panels.... anels.............. .................... .................... .................... .................... .................... .................... .............................. ....................12 12
RTU Communication Communication with Master Station... Station......... ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ................... ................. ....13 13 Gene General......... ral................... ................... ................... .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... ..................... ...........13 13 RTU Master and Station Link Link......... ................... .................... .................... .................... .................... .................... .................... .................... .................... ......................... ...............13 13 RTU Com Commun municat ication ion P Proto rotocol col......... ................... .................... .................... .................... .................... .................... .................... ................... .................................. .........................14 14
Change Changess Require Required dA Att Master Master Station For Expansio Expansion no off S SCADA..... CADA........... ............ ............ ........... ........... .................. ............... ...14 14 Soft Software ware Chan Changes.... ges.............. ................... ................... .................... .................... .................... .................... .................... .................... .................... ....................................... .............................14 14 Hard Hardware ware Add Addition itions.......... s................... ................... .................... .................... .................... .................... .................... .................... .................... .................... .............................. .................... 14
SCADA Marsha Marshalling lling Cubicle.. Cubicle........ ............ ........... ........... ............ ........... ........... ............ ............ ............ ............ ............ ........... ........... .................... ..................... .......14 14 Gene General......... ral................... ................... ................... .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... ..................... ...........14 14 Con Construc struction.. tion............ .................... .................... .................... .................... .................... .................... .................... .................... .................... ................... ................... .................... .................... .......... 14 Inte Interpos rposing ing Relays Relays for Com Comman mands....... ds................. .................... .................... .................... .................... .................... .................... .................... .............................. .................... 15 Tr Transd ansducers. ucers........... .................... .................... .................... .................... .................... .................... .................... ................... ................... .................... .................... .................... ...................... ............ 15
2.1.5
Panel Constru Construction ction For SCADA System.. System........ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ .................. ................ ....16 16
2.1.6
Cables......................................................................................................................................... Cables............................................................................................................................................ ...17 17
2.1.6.1 2.1.6.2
Gene General......... ral................... ................... ................... .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... ..................... ...........17 17 Con Control trol Cabl Cabling ing for SCAD SCADA.... A.............. ................... ................... .................... .................... .................... .................... .................... .................... .................... ....................... ............. 17
2.1.7 DC UPS Sy System... stem......... ............ ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ................ ........................ .............17 17 2.2 SCADA SCADA ALARM. ALARM....... ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... .....17 17 2.3 COMMUN COMMUNICA ICATION TION SYS SYSTEM.. TEM........ ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ......... ...17 17 2.4 FACTOR ACTORY Y TESTING. TESTING....... ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ............ ............ ............ ........... ........... .................... ......................... ...........18 18 2.4.1 Type Tests....................................................................................................................................... ests.......................................................................................................................................18 18 2.4.2 Routine Tests.................................................................................................................................. ests..................................................................................................................................18 18 2.5 FIELD FIELD WORKS WORKS...... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... .............. ........................ ................18 18 2.5.1 Site Testing and Commi Commissioning ssioning(( By EPC Contra Contractor/SCAD ctor/SCADA AS System ystem Vendor)....... endor)............. ............ ............. .......18 18 2.5.1.1 Gene General......... ral................... ................... ................... .................... .................... .................... .................... .................... .................... .................... .................... .................... .................... ..................... ...........18 18 Te Tests sts to be condu conduced ced b by y ma manufacturer nufacturer o off SCA SCADA DA systems................... systems.................................. ............................... ............................... ...................... ............ .......... ........ ... 18
APPENDIX-1 – CONNECTION BLOCK DIAGRAM...................................................................................19 DIAGRAM...................................................................................19 APPENDIX-2 CONTROL I/O SCHEDULE FORMAT........................................................................... FORMAT.................................................................................. .......20 20 APPENDIX-3 CONTROL I/O FORMAT TO BE SUBMITTED BY CONTRACTOR..............................33 CONTRACTOR.............................. 33
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Specification on for SCADA of Electrical Electri cal System Specificati APPENDIX-4 SCADA, FOC & PRDA SYSTEMS INTERCONNECTION DETAILS............................... DETAILS...............................38 38 SP USER-COMMENT FORM...........................................................................................................................39 FORM...........................................................................................................................39 APPENDIX A : GLOSSARY OF DEFINITIONS, TERMS AND ABBREVIAT ABBREVIATIONS............................... IONS................................. ..40 40
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1. 1.1
Introduction PURPOSE Design, engineering, supply, installation, testing and commissioning of SCADA equipment and the associated interface work for the Electrical System in PDO network shall be governed by this SP. The SCADA system shall be governed by, by, but not be limited to, the provisions specified, and shall be undertaken to the highest standards of engineering, material supply and workmanship to give the most reliable system. This Standard shall be utilised with one or more of the referenced SPs and international standards to complete the PDO requirement.
1.2
APPL APPLICA ICABLE BLE S ST TANDA ANDARDS, RDS, SPE SPECIFI CIFICA CATIO TIONS NS AND CODE CODES S The fo follo llowin wing g Standar Standards, ds, sp speci ecific ficati ations ons and codes codes should be consu consulte lted d when when app applyi lying ng the requirement requir ement of this Standa Standard. rd. All listed docum documents ents shall be lates latestt issu issuee except those document documentss prescribed by date.
1.2.1
1.2 .2.2 .2
PDO Standards Doc. no.
Title
00 00-0 -01 1
PDO PDO G Gui uide de to Tech chni nica call Stan Standa dard rdss and and Pr Proc oced edur ures es (W (Wal alll Ch Char art) t)
00-05
Handover and as built documentation
Gen
00-06 SP-1099
Preparation and content of engineering drawings Specification for Electrical Installation Practice
Gen Elec
SP SP-1 -110 103 3
Elec Electr tric ical al Engi Engine neer erin ing g Guid Guidel elin ines es (A (Ame mend ndme ment nt/S /Sup uppl plem emen entt to DEP 33.64.10.10)
Elec
SP-1104
Electrical Safety Rules
Elec
SP-1105
Electrical Standard Drawings
Elec
SP-1107
Electrical Protection Systems
Elec
SP-1108 (10 to 18)
Electrical Safety rules operating procedures.
Elec
SP-1109
Specification for Earthing and Bonding
Elec
SP-1113
Specification for 132 kV Substation
Elec
SP-1115
Specific icaati tio on for Power Lin inee Carrie ierr Communic nication ion Systems
Elec
SP-1265
Specification for Fibre optic cables and key accessories.
Inst
SP-1266
Specification for installation of Fibre optic cable.
Inst
SIOP/S /SIIEP Standard rds s Doc. no.
1.2.3 .2.3
Discipline
Title
Discipline
32.71.00.11 Telecommunication standards
Inst
32.37.20.10 In I nstrument Signal Lines
Inst
33.64.10.10 Electrical engineering guidelines
Elec
63.10.08 63.1 0.08.1 .11 1 Field Field commi commissi ssionin oning g and maintena maintenance nce of electr electrica icall inst installa allations tions and equipment
Elec
Inte Interrnati nation ona al Sta Stan ndard dards s All relevant international standards as referred to in the individual DEP/SP shall be applicable.
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Specification on for SCADA of Electrical Electri cal System Specificati
1.3 1.3
CO COMP MPLI LIAN ANCE CE WI WITH TH S ST TAN ANDA DARD RDS S All requirements of this Specification shall apply except where equipment manufacturer's standards are more stringent, then the latter shall apply. The user user shall shall ob obtai tain n the writte written n appro approval val from from the technic technical al auth authorit ority y within within PD PDO O for for any deviations from this Specification. In all cases, the Company shall determine the adequacy of Works executed by the Contractor in accordance with this Specification.
1. 1.3. 3.1 1
Lang Langua uage ge and and Uni Units ts of Meas Measur urem emen entt The English language and the SI system of units shall be used through out for all the documentation and drawings. Where necessary for a specific application, alternative units may be indicated in brackets behind the SI units.
1.4 1.4
PR PROD ODUC UCT/ T/AS ASSE SET T WAR ARRA RANT NTY Y The equipment shall be guaranteed to meet specified technical particulars listed in this Specification and all referred standards and codes. It shall have an expected technical lifetime of at least 20 years. Clarification to how this requirement will be met shall be provided in the quotation, in particular giving attention to the redundancy and availability of spare parts. If the guaranteed performance of the equipment is not met and/or if any component fails to comply with the specification requirement in any respect whatsoever at any stage of manufacture, test or erection, the Company 's Representative may reject the equipment, or defective component thereof, which whicheve everr he consi consider derss nec neces essar sary y, and after after adj adjust ustme ment nt or mo modif difica ication tion as dire directe cted d by the Company's Representative, the Vendor shall submit the item for further inspection and/or test. All rep repair air pro proce cedur dures es sha shall ll not be perf perform ormed ed withou withoutt the prior prior app approv roval al of the Com Compan pany's y's Representative. In the event of a defect on any item being of such a nature that the specification requirements cannot be fulfilled by adjustment or modification, such item shall be replaced by the Vendor, at his own expense to the entire satisfaction of the Company's Representative. Equipment repaired to an approved procedure shall not be accepted as a permanent solution or replacement unless the Vendor guarantees in writing that the repaired plant or component shall have the same service life and efficiency efficiency as the component original originally ly manufactured. The Vendor shall also warrant all equipment and component parts against defective material, design and /or workmanship. Merely extending a Sub-V Sub-Vendor’s endor’s warranty is not acceptable. The approval of the Company's Representative of inspection and/or test results will not prejudice the right of the Company's Representative to reject an item of equipment if it does not comply with the contract document when erected or prove completely satisfactory in service. Product/asset warranty shall further refer to the requirement as specified in the commercial package of the contract document.
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1. 1.4. 4.1 1
Desc Descri ript ptio ion n of of SC SCADA syste ystem m The SCADA system in PDO is installed by ABB. ABB’s S.P.I.D.E.R. Compact SCADA system with Master Control Stations at Yibal and Marmul to control the PDO electrical network. Monitoring facilities are available at the office of Infrastructure Power Systems Department at Mina Al Fahal. The block block diagram diagram of PDO’ PDO’s SCA SCADA DA syste system m is atta attache ched d as Appe Appendix ndix-4 -4 to this SP. SP. The data engineering tool server is only installed in Yibal master control station. The new SCADA RTU’ RTU’ss and other related items to be added for any project shall be fully compatible with the existing ABB system system in all aspects. The details of the existing SCADA system system are described in brief, in section 1.4.1.1
1.4.1. 1.4 .1.1 1
Existin Existing gS SCAD CADA A System System Inform Informatio ation n PDO’s SCADA system has Master control stations at Yibal for the control and monitoring of the PDO’s North and at Marmul for the control and monitoring of PDO’s south Oman network. Overall control of PDO’s SCADA is possible from Yibal as well as Marmul master control station/server. Control and monitoring of south Oman network can be done from Yibal master station through server located in Marmul master station and also control and monitoring of north Oman network can be done from Marmul master station through server located in Yibal master station. The salient features of the SCADA system are furnished below:
1.4.1.1.1 1.4. 1.1.1 Basic Basic Features Features ABB’s S.P.I.D.E.R. Compact SCADA system with distributed design has the following features:
Distributed Architecture Architecture for both hardware and software to have future expansion possibilities.
Open System Architecture with extensive use of open standards
Graphic Us Graphic User er Interface Interface whic which h supp supports orts zooming zooming,, panning, decl decluttering, uttering, drop and drag etc., through an OSF/Motif and X- Window interface.
1.4.1.1.2 Open System Architecture a and nd Standa Standards rds The following standards are used in ABB’s S.P.I.D.E.R. Compact SCADA system.
IEEE POSIX Operating System Interface for the portability across hardware platforms
OSF- Open Software Software Foundation / Motif for the user interface
X- Windows Windows for user interface communication
SQL – Structured Query Language , interfaces to real time and maintenance data bases
Ethernet ISO 8802.3 (IEEE 802.3) for LAN – Communication
TCP/IP for LAN and WAN communication
X.25 / 3 for WAN communication
ELCOM(IEC ELCOM(IE C 870-6) for Inter-Center communication
1.4.2 .4.2
Communication Standards as per ISO/OSI model together with ITu-T recommendations for 4 wire and PLC systems systems
RP 570/571 570/571 protocol based on IEC 870-5 using for format mat class FT 1.2 for com communicat munication ion between betwe en RTU RTU Communication Server (RCS) and the RTU. RTU.
Design ign and Const onstru ruc ction ion The design of the SCADA system expansion and the equipment to be supplied for a specific project shall be compatible compatible with the exist existing ing system system described described above. The new RT RTU’ U’ss shall have full compatibil com patibility ity with the ABB supe superviso rvisory ry S.P S.P.I.D.E .I.D.E.R. .R. Compact Compact sys system, tem, so that all the facilities facilities required for the whole range of operational features are available.
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1.4.3 .4.3
Servic ice e Condit itiions Equipment specified in this SP shall be designed to comply with the environmental conditions (for indoor and outdoor equipment) as stated in SP-1103; section 1.1 and Appendix 1.
1.4.4 .4.4
SCADA System tem Ph Phiilos losop oph hy
1.4. 1.4.4. 4.1 1
Remo Remote te SCA SCADA DA Sys Syste tem m The SCADA system for electrical power network is different from the SCADA system available for instrumentation / process control for oil and gas systems and telecommunication. The following sections outlines the basic principles prin ciples of SCADA monitoring and control for Electrical System. In general, all circuit breakers which are part of 132kV transmission system under Utility section control, at voltage levels of 6.6kV and above, shall be operated and monitored from SCADA. All tap positions of transformers which are part of 132kV transmission system under Utility section control, with secondary voltage of 6.6kV and above and Gas Turbine Generators shall be operated and monitored from SCADA.
1.4. 1.4.4. 4.2 2
Alar Alarms ms an and d Indi Indica catio tions ns All plant el elect ectric rical al ala alarms rms and indicat indications ions as per Ap Appen pendix dix-1 -1 of this SP sha shall ll be wire wired d to the SCADA system. The alarm and indication contacts shall be voltage and earth free. Each alarm or indication shall consist of a two wire circuit from the initiating device to the SCADA marshalling cubicle. Any common common connections shall be completed at the marshalling cubicle. Plant contacts may be either normally open or normally closed type. An open contact shall have an impedance of greater than 10k ohm and a closed contact of less than 200 ohm, including cabling, when measured at the marshalling cubicle. Separate alarm contacts shall be used for the SCADA and station alarm systems and all breaker indications for open / closed status shall be provided by using the main auxiliary contact and not the multiplied contact. The SCADA indication for ‘Supervisory’ selection shall be with the ‘Supervisory’ contact of the Remo Remote/ te/Sup Super ervis visor ory y sw switc itch h (at the contro controll panel) panel) in serie seriess with with the ‘R ‘Rem emote ote’’ posit position ion of the Local/Remote Local/Rem ote switch (at the equipment).
1.4. 1.4.4. 4.3 3
An Anal alog ogue ue Meas Measur urem emen entt The SCADA system shall be designed to receive a current output signal from the transducers in the range of 0-10, 0-20 or 4-20 mA for both unidirectio unidirectional nal and bi-d bi-direct irectional ional quantities except for the transformer tap position indication. An alarm shall be raised by the SCADA system should the RTU detect transducer outputs of less than 4 mA. The transformer tap position indicator shall have 0–10 mA output output with 0.4 mA corresponding corresponding to each step. Unidirectional Unidirectio nal analogu analoguee quantities shall be represented represented by current current signals in the range of 4-20m 4-20mA, A, where 4mA corresponds to the lowest value of the analogue range and 20mA corresponds to the full scale value. Bi-directional quantities shall be represented by current signals in the range of 4-12-20 mA, where 4mA represents the full scale negative, 20mA represents the full scale positive and 12mA represents the zero value. The analogue quantities that are to be measured in SCADA are current, voltage, MW, MVAR, tap position indication, temperature and pressure. The list of such analogue measurements that are required for SCADA are furnished in Appendix-1 of this SP SP..
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1.4. 1.4.4. 4.4 4
En Ener ergy gy Meas Measur urem emen entt The Energy measurement shall be made from the KWH meters. The KWH meters shall have a pulse output through a potential free contact and the energy measurement at SCADA shall be a derived from these pulse outputs. The outputs should be calibrated for 1 pulse = 10kWh. The list of such energy measurements that are required for SCADA are furnished in Appendix-1 of this SP. SP.
1.4. 1.4.4. 4.5 5
Cont Contro roll Out Outp puts uts Control signals from the RTU shall be short duration 48V DC “fleeting” signals. Interposing relays shall be provided in the marshalling cubicles to completely isolate these signals from plant voltages. 48V control signal from SCADA shall not extend beyond the marshalling cubicle. The list of control outputs to be wired to the SCADA system are furnished in Appendix-1.
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2.
Scope The SCADA system equipment shall fully comply with the international standards listed in section 1.2.3 and the requirements of this SP.
2.1 2.1
SC SCAD ADA A SY SYST STEM EM EQ EQUI UIPM PMEN ENT T
2.1.1 2.1 .1
SCAD SCADA A Remot Remote e Term Termina inall Un Unit it (RTU (RTU)) and and Isolat Isolation ion P Pane anell
2.1. .1.1. 1.1 1
RTU Desi Desig gn The Remote Terminal Unit (RTU) shall be of the state of the art design capable of communicating with the ABB S.P.I.D.E.R. master station. The RTU shall be designed for accepting the alarm, indication and analogue inputs from the field and also provide the control outputs as specified above. The RTUs RTUs shall have extended memory for plus counters accumulations for 30 hours duration of memory, memory, while communication is disconnected.
2.1.1.1.1 2.1. 1.1.1 Analogue Analogue inputs inputs All analogue inputs are linear and shall be processed using a linear scaling algorithm. A separate set of scaling scaling facto factors rs shall shall be provided provided for eac each h point point and be edita editable ble thro through ugh the use userr inte interfa rface. ce. Optional analogue limit checking shall be provided against both high and low limit values, which shall be individually settable for each analogue input via the user interface.
2.1.1.1.2 2.1. 1.1.2 Digital Digital Inputs Inputs Digital inputs may be either single or multiple bit, the latter usually treated in pairs. Capability shall be provided to generate alarms, events or records, depending dependin g on the defined normal and abnormal states for each input or group of inputs.
2.1.1.1.3 2.1. 1.1.3 Pulse Pulse Inputs Inputs The RTUs RTUs shall buffer buffer thirty hours in half hour accumulations of pulse inputs. The SCADA Master Station shall gather and store these values for upto a year and provide a means for displaying and reporting.
2.1.1.1.4 2.1. 1.1.4 Control Control Outputs Outputs Control outputs may be a single control or a sequence of controls and will be used to control breakers, transformer taps etc. Both latched and momentary controls shall be accommoda accommodated, ted, the latter having provision for specifying the duration of the control either under software control or by the operator for ad-hoc controls. Controls shall be carried out in three stages: A select select output shal shalll be made to the RTU to specify which which point is to be controlled. The RTU shall check that the selection is acceptable and shall reply with the result of this check. An “activated” output shall be sent to execute the previously selected control. Provision shall be made for confirming status input and a device failed advisory if the input does not confirm execution of the control within a specified time period. An error at any stage of the control shall generate an error message.
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2. 2.1. 1.1. 1.1. 1.5 5
Calc Calcul ulat atio ion ns
The RTU shall be capable of performing a host of calculations and generate alarms on calculated values. The parameters to be calculated shall be but not limited to the list furnished below:
Current every 20 seconds
Total generated Output (TGO) every 20 seconds for both MW and MVAR
Digital state change totalisation to be accumulated for the periods 0000 to 1200 and 1200 to 2400 hours.
Half hourly pulse change accumulations
kWH input from each feeder, generator, interconnector with export & import.
MWH and MVARH inputs from each generator, transformer, motor feeder and interconnectors with export & import . Apparent Power MVA every 20 seconds
2.1.1. 2.1 .1.1.6 1.6
RT RTU U Par Parame ameter ter Ch Chan ange ge / Do Down wnlo load ading ing
Capability shall be provided to allow the operator at the Master Station to change the operational parameters in the RTUs, RTUs, includi including ng scaling factors, alarm limits and the RTU configuration from his ter termina minal. l. It shall shall not be nec neces essar sary y for a tec technic hnician ian to visit the RTU sit sitee to change the poi point nt configuration unless hardware installation is required.
2.1. 2. 1.1. 1.1. 1.7 7
Alar Alarm m Time Time T Tag aggi ging ng
Digital input changes shall be time tagged in the RTU with a resolution of 1ms. This is critical to allow determination of the sequence of events when problems occur. Time tag information shall be returned to the Master Station with the alarm to which it is related.
2.1.1. 2.1 .1.1.8 1.8
Fre Freque quency ncy Synchr Synchroni onisat sation ion
The control commands for open / close of circuit breakers issued by the operator will contain logic to allow execut execution ion only if the frequenci frequencies es on either side of the breaker breaker match. Capab Capability ility shall be provided to allow over-ride over-ride of the frequency synchrocheck. synchrocheck. Capability shall be provided to report the success or failure of the control execution back to the Master Station.
2.1.1.1.9 2.1.1 .1.9
Additional Additional S Seria eriall Interface Interface On R RTU TU an and d with with fibre optic optic patch patch panels. panels.
For For fu futur turee appli applica cati tion ons, s, the RTU sh shal alll have have the the capa capabi bilit lity y of being being fi fitte tted d wi with th a Spec Specia iall Communication card 23LK 22 Or Equivalent to enable communication with “intelligent protection devices” like Micom relays from Alstom (Areva) and similar relays from ABB / Reyrolle/Siemens etc.
2.1. .1.1. 1.2 2
RTU Sta Starrt-u t-up The RTU shall start a)
On co comm mmand and from from the Mast Master er Sta Statio tion n
b)
Automatically when the RTU RTU has detected an internal failure
c)
Auto Automatica matically lly upon recover recovery y ffrom rom a loc local al power power suppl supply y failure failure
The start procedure shall put the RTU in the initialisation mode and the RTU shall get initialised from the messages from the Master Station which shall establish the connection between the two and for downloading data required for the correct RTU operation. This start-up procedure shall be fully automatic.
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Specification on for SCADA of Electrical Electri cal System Specificati
2.1. 2.1.1. 1.3 3
RTU Diag Diagno nost stic ics s The internal status of the RTU shall be monitored by the RTU itself. Diagnostic information shall be stored in the RTU and shall be retrievable from the Master Station on specific request to enable problem analysis from the Master Station. For a total RTU failure, the Master Station shall set tthe he RTU supervision to “inoperable”. All I/O boards of the RTU shall be monitored and failures shall be reported to the Master Station. All data input on faulty boards shall be regarded as erroneous and the status of the related points shall be made invalid. The Remote Communication Server (RCS) of the ABB S.P.I.D.E.R. master station will continue to poll an inoperable RTU periodically and the status of the RT RTU U will be reset to t o operable, if a number of sequential poll messages are successful. Communication with an inoperable RTU can be blocked from the Master Station if required, until maintenance is performed.
2.1. 2.1.1. 1.4 4
St Stat atus us / Da Data ta Chec Check k A Status / Data check may be addressed from a Master Station to all RTUs in the system or any single RTU. The request acquires all measured values and indications from the addressed RTU(s) and the database will be updated with the acquired data. The internal status of the RTU reflecting its condition and any known errors in the RTU’s data shall be returned to the Master Station. A control system event and associated alarm will be generated in the Master Station if an RTU returns an invalid data.
2.1. 2.1.1. 1.5 5
Time ime S Syn ynch chro roni nisa sati tion on a) The RTU cl cloc ocks ks shall shall be sync synchr hroni onise sed d with with the Ma Mast ster er St Stat ation ion sy syst stem em us using ing the tim timee synchronisation messages to a resolution of 0.1 ms. b) The RTU shall be fitted with real time t ime clock which is synchronised by the GPS system. This will realise synchronisation between between master system and PRDA system system being introduced in PDO network.
2.1.1. 2.1 .1.6 6
Cons Constru tructio ction n of RT RTU U and Iso Isolat lation ion P Pan anel els s The RTU shall be housed in a panel made of sheet steel as per details in Section 2.1.5. Th Thee RTU pane panell sh shal alll be to toge gethe therr wi with th the isol isolati ation on pane panel. l. The The is isol olat atio ion n pan panel el shall shall have have disconnecting type terminal blocks suitable for termination of multi-pair cables coming from the SCADA Marshalling Cubicle and screw type terminals for the auxiliary supply cables. The isolation panel shall have suitable cable trays for supporting / dressing neatly all the cables. The wiring between the RTU panel and the Isolation panel shall be through factory wired inter-panel wiring with 0.5sqmm wires.
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2.1.2 2.1.2
RTU RTU Com Commu muni nica cati tion on with with Mast Master er Stat Statio ion n
2.1. .1.2.1
General The hardware servers should be provided with application data hard disk and an operating system hard disk, two LAN routes to the PDO network. network. The RTU shall communicate with the Master Station as a minimum for the operations defined below: i)
Status Check As the first message after a system start up or restart. When the RTU is inoperable Request for all data from the RTU by the Master Station Station..
ii ii))
Funct unctio ion nC Com omm mand and
RTU cold start Pulse counter freeze
ii iii) i) Func Functi tion on T Tab able le Load Loading ing iv iv))
Time ime Sy Sync nchro hronis nisati ation on
v)
Pollin ing g rreequ queest
vi)
Data Ou Output
Control Set point General data output
vi vii) i) Prim Primar ary y dat dataa input input
Indication Measured values Pulse counter values
viii) Event reco recording rding
Indication Measured values
ix ix))
Ter ermin minal al st statu atus/ s/ev even ents ts
x)
Ackno Acknowl wledg edgem ements ents(po (positi sitive ve and nega negative tive))
xi) Comm Communication unication route route (PLCC/Fib (PLCC/Fibre re Optic/Micr Optic/Microwav owave) e) det detecti ection on and indications. xii) Hardw Hardware are aand nd Soft Softwa ware re eerro rrors. rs. xiii) Hardwar Hardwaree update to main centre when when corresp corresponding onding databa database se is chan changed. ged. xiv) RTU Status(In Status(In ser service/ vice/Not Not in service) service)
2.1. 2.1.2. 2.2 2
RTU Mas Maste terr and and St Stat atio ion n Li Link nk The RTU for expansion expansion of the SCADA SCADA system system shall gener generally ally confor conform m to the exist existing ing linking between betwe en the RTUs and the RCS as described described below: The Remote Communication Server (RCS) of the Master Station is linked to the RTUs through the Line Interface Modules(LIM) which serve as the communication boards for the t he RTU lines. RTU specifics are handled by the LIM and the data processing functions are handled by an open software platform in the RCS. The communication line is through a line split connected to two LIMs. The two two connections are for main main and backup and the redundancy is treated by lines. When communication fails with all RTUs on one line or when the LIM does not respond, the RCS initiates a switchover between between the lines. Communication between the RCS and the RTUs is by serial communication. Each LIM contains programs for administration and message exchange control of all RT RTUs. Us. The message security
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Specification on for SCADA of Electrical Electri cal System Specificati coding is generated and checked in both hardware and software by the LIMs and the transfer of information to the application server is inhibited if errors are detected. The LIM has two independent channels for asynchronous communication and can handle two lines. The transmission rate will be at 1200bps and this is adjustable. LIMs are daisy chained with a maximum of four LIMs in each chain. Upto 8 daisy-chains for a total of 64 RTU lines can be handled by each RCS. RTU shall be suitable for V24 connection to the communication equipment, to facilitate a digital connection between RTU RTU and communications equipment in future.
2.1. 2.1.2. 2.3 3
RTU Comm Communi unica catio tion n Pro Proto toco coll RP570/571 the high-level communication protocol which is based on IEC 870-5-1 is used between the RTU and the RCS using class format FT1.2.
2.1.3 2.1 .3
Change Changes s Requir Required ed At Mast Master er Stat Station ion For For Expan Expansio sion n of SCA SCADA DA Whenever the SCADA system is expanded by addition of RTUs or addition of field equipment both software softw are modifications and hardware additions may be needed.
2.1. 2.1.3. 3.1 1
So Soft ftwa ware re C Cha hang nge es The database database at the Maste Masterr Sta Station tion shall be extende extended d to add any new equip equipmen mentt like RT RTU U or additional field inputs / control outputs to the existing RTUs. The existing pictures need to be amended and new RTUs require new S/L pictures.
2.1. 2.1.3. 3.2 2
Hard Hardwa ware re Ad Addi diti tion ons s When fi When field eld inpu inputs/o ts/outp utputs uts are add added ed to the SCADA SCADA withou withoutt add additio ition n of RTU RTUs, s, additio additional nal input/output cards shall be added to the RTU, as required. This shall be carefully examined on a Project basis.
2. 2.1. 1.4 4
SCAD SCADA A Mars Marsha hall llin ing g Cubi Cubicl cle e
2.1. .1.4.1
General The SCADA marshalling marshalling cub cubicle icle (SMC) shall ser serve ve as an interfa interface ce point betw between een the SCA SCADA DA signals and the field signals / voltages. These cubicles shall have all the SCADA inputs from the field and SCADA output signals cabled into them and the cubicles shall have adequate space for all the circuits present and those which are indicated as future plus 30% spare capacity.
2.1. .1.4. 4.2 2
Constru tructio ction n The SMC shall be made of sheet steel as per details in Section 2.1.5. Cabling from CTs shall terminate at the SMC on isolating links of shorting type. Cabling from VTs shall terminate at the SMC on fused isolating links. Terminals of CT and VT circuits shall be suitably shrouded. All control cabling from field shall terminate on isolation type links to allow all field control circuits to be isolated for testing purposes. The SMC shall have a set of disconnecting type terminal blocks for wiring the circuits from the SMC to the SCADA Isolation panel by multi-pair cables. Shorting of terminals shall be done only in the SMC and not in the Isolation panel. Shorting of interposing relay wiring shall be carried out on the positive side. The terminal 17 shall be the common terminal. Refer to Appendix 4 for the details of the wiring arrangement and presentation of the I/O schedules. Separate Sepa rate terminal blocks blocks shall be provide provided d for digital indicati indications/alar ons/alarms, ms, ener energy gy pulses, output commands, analogue telemetry signals and control signals, and cable terminations shall be made to the respective blocks. The cabling between SCADA isolation panel and SMC shall be twisted pair telephone type cable. Refer Ref er standard standard drawing drawing for block schematic no STD-4-65 STD-4-651111-001-0 001-0 for SCA SCADA DA system system under Appendix-4.
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Version 2.0 2.1.4. 2.1 .4.3 3 Int Inter erpo posin sing gR Rela elays ys for Com Comman mands ds Interposing relays shall be provided in the marshalling cubicle to completely isolate the SCADA signals from the field voltages. Interposing relays shall be suitable for operation at 48V DC and shall be arranged in rows in the cubicle, protected by transparent detachable covers. Manual operation of these relays shall not be possible with the covers fitted. All relay coils shall be protected by a suitable back EMF suppression diode. The interposing relays shall have necessary Normally Open contacts. The rating of the contacts shall be sufficient sufficient to operate the field devices.
2.1. 2.1.4. 4.4 4
Trans ransdu duce cerrs
2.1.4.4.1 2.1. 4.4.1 General General For measurement of Current, Voltage, MW and MVAR, transducers shall be provided in the SMC. The transducers shall be driven from the field CTs and VTs and shall comply with the requirements of IEC publications 688-1. Transducers shall be of static type, mounted on DIN rails within the SMC.. The auxiliary supply required for the operation of the transducers shall be derived from same DC supply used for the field equipment in i n the station namely, 110V or 24V DC UPS UPS system system..
2.1.4.4.2 MW and MVAR MVAR transducers transducers These transducers shall provide a 4-20 mA DC output proportional to the AC power (active or reactive) input, suitable for the measurement of 3-phase unbalanced loads and shall be suitable for bi-directional or unidirectional unidirection al power flow as applicable for individual circuit. The burden of the transducers on the VT shall not be more than 5 VA and that on the CT circuit shall not be more than 2 VA. VA. The peakpeak-to-p to-peak eak noise current deliv delivered ered by the transducer shall not exce exceed ed 2% of the max maximu imum m signal signal cur current rent.. The res respon ponse se tim timee sha shall ll be appro approxima ximatel tely y 300 milliseconds to reach 90% of the rated output. The accuracy class shall be Class 0.5. Transducers shall be tested for both leading and lagging power factors and shall be able to withstand 120% of the rated current continuously.
2.1.4.4.3 kV Tr Transduc ansducers ers The transducers shall provide a 4-20mA DC output proportional to the AC input voltage range typically nominal nominal kV + / - 10%. The burden of the transducers on the VT shall not be more than 2 VA. The response time shall be approximately 300 milliseconds to reach 90% of the rated output. The accuracy class shall be Class 0.5.
2.1.4.4.4 Current Transduce Transducers rs The transducers shall provide a 4-20mA DC output proportional to the AC input current range typically 0 – 120% of the rated current of the circuit. The burden of the transducers on the CT shall not be more than 2 VA. The response time shall be approximately 300 milliseconds to reach 90% of the rated output. The accuracy class shall be Class 0.5.
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Specification on for SCADA of Electrical Electri cal System Specificati
2.1.5 2.1.5
Pane Panell C Con onst stru ruct ctio ion n For For SC SCAD ADA A Syst System em
2.1. .1.5. 5.1 1
Constru tructio ction n The SCADA system panels shall be made of sheet steel with a minimum thickness of 2mm and shall have a degree of protection of IP 54. The RTU panels shall be constructed from standard 19’’ rack mounting frames of sufficient strength to accommodate the hardware. Panels shall have a maximum depth of 800mm 800mm to facilitate maintenance maintenance acce access ss to internal equipment. equipment. Iso Isolation lation panel & SMC cabinets shall either have front or front and rear access. Side access is not acceptable. Doors shall be lift-off type, be complete withbonded 3 pointtolocking mechanism, and identical keys. Doors and swing frames shall electrically the panel structure iflocks conductive. When needed at installation/Commissioning of the RTU, any special tools & tackles, including test programmes in PC, shall be made available by the supplier. Each panel shall be provided with a 100mm plinth constructed from steel channel, and removable, fully gasketed, bottom entry gland plates. Gland plates shall be un-drilled suitable for drilling at site and sized for 30% extra cables. The panel colour shall match with the other equipment in the station. All panels shall be designed for and fitted with accessories, power supplies, racks, wiring trunking etc., to cater for 30% increase in the Inputs / Outputs.
2.1.5.2
W ir i n g The cubicle shall be completely factory wired and ready for external connections. Wiring shall be carried out with PVC insulated, 600/1000V grade, multi stranded copper conductor. The following minimum copper areas are required: For external Power Supply
: 2.5 Sqmm
For signals between the RTU and the Isolation cabinet: 0.5 Sqmm
Both ends of all wires shall be fitted with identification ferrules which shall be shown in the wiring diagrams. Signal wiring shall be run in PVC trunking and shall be segregated from power wiring. Colour coding of the wires shall be as follows: follows:
2.1. 2.1.5. 5.3 3
Power
- V AC - V DC
Signa nal: l:
-As p peer Ma Manufacture urer’s r’s st staandar dard
Earth th::
Dirt irty earth
: Line Brown, Neutral Blue : +ve Red, -VE Black
: Green/ n/Y Yell llo ow
Ter ermi mina nall block blocks s Terminal blocks shall be arranged and suitably labelled to allow easy identification of individual circuits. circ uits. All terminal strips shall be identified identified and termina terminals ls numbe numbered. red. All incoming and outgo outgoing ing cables cabl es except except sys system tem cab cables les shall be glanded glanded at the gland plate. Inco Incoming ming and outgoing signal cables shall be wired from system cable soc sockets kets only between Isolation panel and RTU. Each panel shall be provided with earth bars each made of minimum 25mm x 6 mm solid copper and rigidly supported. The earth bars shall be connected to the common earth of the Station. Sensitive electronic equipment shall be earthed as per Shell standard drawing number S68.030-0 and DEP 32.37.20.10. While working, inside the Cabinets, measures shall be taken in order to prevent ESD damages on the equipment.
SP-1116
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Version 2.0
2.1.6
Cables
2.1. .1.6.1
General The cables and other accessories shall be as specified in DEP-33-64-10-10-Gen and as amended by SP-1103. Screening and cable segregation shall be as per the requirements of DEP's 33.64.10.10-Gen, DEP32-37.00.31-Gen, & DEP.33.71.00-31-Gen and as amended by relevant SP's to prevent spurious signals being induced into the cables.
2.1. 2.1.6. 6.2 2
Cont Contro roll Cabl Cablin ing g fo forr SC SCAD ADA A Individual CT, VT cables shall be laid for the input of the transducers located in the SMC Indication, control and alarm circuits shall not be mixed with analogue signals from the SMC to the field. Therefore, separate cables shall be laid for analogue circuits. The control cabling from the field to SMC shall be with multi-core control cables. The cabling between betwe en the SMC and the / Isolation panel and betwe between en RT RTU U and PLCC/FOP PLCC/FOPP/Microwav P/Microwavee panel shall be with twisted multi pair cable having overall screening in addition to individual screening for each pair. Remote RTUs RTUs shall have facility for using fibre optic cable for communication with external devices, like protection relays.
2.1.7
2.2
DC UPS Sy System
The SCADA system shall be suitable for operation at 48 V DC supply and shall be tapped from the 48V DC board of the telecom system.
SCADA ALARM An alarm annunciation scheme shall be designed and provided such that the failure of the RTU is indicated locally in the substation alarm system, as well as at the Master Station through a self monitoring supervision system.
2.3 2.3
CO COMM MMUN UNIC ICA ATI TION ON SY SYST STEM EM The communication between the SCADA RTU and the remote SCADA control system is arranged in loops, i.e. via two alternative routes (Main/ Stand-By). One through PLCC system and the other through microwave OR the two routes could be a combination of PLCC, microwave and fibre optic systems. system s. Refer standard drawing number n umber STD-4-6511 STD-4-6511-001-0 -001-0 for block schematic of SCAD SCADA AS System ystem under Appendix-4. For details of communication system, refer following PDO drawings drawings with latest revisions. a)
EF EFD D 6 115 1151( 1(4 4 She Sheet ets) s)
b)
EFD 6 1264(4 Sheets)
c)
YI YIB B 6 34 3420 20(4 (4 Sh Shee eets ts))
PLCC system system shall be as per SP-1115. SP-1115. All interfaces required for establishing proper communication between betwe en the SCADA RTU RTU and the Master Station through the PLCC, Microwave Microwave and fibre optic syst system emss shall shall be in inclu clude ded d as part part of the SCAD SCADA A sy syst stem em eq equi uipm pment ent.. The The alarm alarmss of the communication link shall be available in SCADA as per the list given in Appendix-1.
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Specification on for SCADA of Electrical Electri cal System Specificati
2.4 2.4
FAC ACT TOR ORY YT TES EST TIN ING G
2.4.1
Type Tests All equipment equipment shall have valid type tes testt certifica certificates tes for similar models models.. Fres Fresh h Typ Typee tests for the equipment are not needed, provided the manufacturer can submit certificates that the equipment complies with all type tests as prescribed by the respective IEC standards.
2.4.2
Routine Te Tests All routine tests as per international standards shall be carried out on all the items of the SCADA system.
2.5
FIELD WORKS
2.5.1
Site Testing esting and Commis Commissio sioning ning ( By By EPC EPC Contrac Contractor/SC tor/SCAD ADA A System System Vendor) endor)
2.5. .5.1.1
General This section defines the minimum requirements of pre-commissioning tests and commissioning tests that are to be carried out for the SCADA system equipment. The tests shall be conducted from the SCADA Master Station after com complete plete installation.
Functional checks for all the communication alarms by simulation/switching off the equipment. Functional checks for control outputs by simulation
Tests to be conduced by manufacturer manufact urer of SCADA systems:
SP-1116
Functional checks for all alarm and indication points
Functional checks of all transducers, if signals from them are available. Otherwise, a test instrument for injection of mA signals shall be used. Functional checks for all alarm and indication points and energy pulses at the SCADA master control station by field simulation. Functional checks for all control outputs from the SCADA master station by physically operating the equipment or a test relay. Functional checks for SCADA alarm at local alarm system and at the SCADA master control station. Any other tests recommended by manufacturer.
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Version 2.0
APPENDIX-1 – CONNECTION BLOCK DIAGRAM
SCADA Master Station at Yibal or Marmul
Main Communication Route (Refer Clause 2.3 2.3 for Existing PDO Syste System m Details)
Alternative Communication ( Refer Clause 2.3 for 2.3 for Existing PDO Syste System m Details)
PLCC/F.O.P.P./ MICROWAVE
PLCC/F.O.P.P./ MICROWAVE
RTU Panel
Factory made inter- Panel Wiring
SCADA Isolation Panel
Multi-core twisted pair cable for Analogue Analogue Circuits (Cable with overall overall screen screen and screens for individual pair.
Multi-core, 2.5sq. mm Armored Control Cable for Analogue Inputs (2 Wire for each Input )
30/06/1999
SCADA Marshalling Cubicle
Field Devices
Field Devices
Multi-core twisted pair cable for digital Alarms, Indica Indications tions and Contro Con troll (Ca (Cable ble wi with th ov over erall all screen and screens for Individual pair)
Multi-core, 2.5sq. mm Armored Control Cable for digital Alar Al arm, m, In Indi dica cati tion on In Inpu puts ts an and d Control Outputs (2 Wire Wiress for each Input or Output )
Page 18 SP-1116
Specification cation for SCADA of Electric Electrical al System Specifi
Version 2.0
APPENDIX-2 CONTROL I/O SCHEDULE FORMAT
Equipment: 132kV Line Isolator and Line earthing Isolator Isolator.. Plant Mnemonic
AXXX
AXXX
AXXX
Description
Indica ttiion (Digital )
Control (Digi ta ta l) l)
Tel eem metry (Analogue)
A la r m ( D ig it a l)
Remarks
Isolator Closed
1
1(*)
*For motorised Isolator
I Issolator Open
1
1(*)
*For motorised Isolator
Earthing Isolator-1 Closed
1
1(*)
*For motorised Isolator
Earthing Isolator-1 Open
1
1(*)
*For motorised Isolator
1(*)
1(*)(**)
*For motorised Isolator
Earthing Isolator-2 Closed
** Wherever applicable Earthing Isolator-2 Open
1(*)
1(*)(**)
*For motorised Isolator ** Wherever applicable.
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Specification for SCADA of Electrical System
Equipment: 132kV Bus Isolator. Plant Mnemonic
AXXX
Description
Indication ((D Digital)
Control Di Digital)
Telemetry ((A Analogue)
Alarm ((D D ig it a l)
Remarks
Isolator Closed
1
1(*)
* For motorised Isolator.
Isolator Open
1
1(*)
* For motorised Isolator.
Equipment: 132kV Circuit Breaker. Plant Mnemonic
AXXX
Description
Indication(Digital)
Control (Digital)
Circuit Breaker Closed
1
1
Circuit Breaker Open
1
1
Telemetry(Analogue)
A la r m ( D ig it a l)
Circuit breaker mechanism faulty
1
Circuit breaker SF6 Low Pressure alarm
1
Circuit breaker SF6 Low Pressure Lockout
1
Remarks
Equipment: 132kV/33 kV Control & Relay panel.
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SP-1116
Specification cation for SCADA of Electric Electrical al System Specifi
Version 2.0
Equipment: 132kV Transformer Transformer Remote tap change control cubicle. Plant Mnemonic
AXXX
Description
Indication (Digital)
Control (Digital)
1
1
Tap Position OLTC in Auto
Telemetry (Analogue)
Alarm (Digital)
Remarks
1
OLTC in Manual
Active status Auto
1
OLTC Master
1
1
Active status is “Remote”
OLTC Follower
1
1
1
OLTC independent
1
1
1
Transformer Tap Raise
1
1
Transformer Tap Lower
1
Transformer Fan Running
1
Transformer Fan Stopped
1
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Version 2.0
Specification for SCADA of Electrical System Transformer fan START
1
Transformer fan STOP
1
Transformer fan in supervisory
1
Transformer tap change in progress
1
Active status
Transformer tap change incomplete
1
Transformer tap changer out of step.
1
Transformer tap change control faulty
1
Transformer OLTC Pressure relief trip(If available)
1
Transformer OLTC Oil Surge relay trip
1
Equipment: SCADA MARSHALLING PANEL FOR 132/33 kV Substation Plant Mnemonic
Description
Indication(Digital)
Control (Digital)
Alarm(Digital)
Remarks
Active power(MW)
1
For TRF &LINE feeder
Reactive power(MVAR)
1
For TRF &LINE feeder
1
For TRF &LINE feeder
Line Current(A)
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Telemetry(Analogue)
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SP-1116
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