Design basis Report

Project:

印度 TIRODA（提隆达）3×660MW 燃煤电站

TIRODA THERMAL POWER PROJECT 1980 MW (2x660 MW Phase - I+1x660MW Phase-II) Tiroda, Gondia District, Maharashtra Owner:

ADANI POWER MAHARASHTRA PRIVATE LIMITED TIRODA, MAHARASHTRA Owner’s Consultant :

FICHTNER Consulting Engineers (India) Private Limited and BLACK & VEATCH Vendor:

SICHUAN MACHINERY & EQUIPMENT IMP. & EXP. CO., LTD

西 南 电 力 设 计 院 SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE APMPL DOC.NO.

Revision

TIR1-CBE-OTH-BE-X-001

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PROJECT DOC. TITLE :

DESIGN BASIS REPORT FOR ELECTRICAL PART

DOC. NO.:

50-F303C-D01-01 Revision

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APPROVAL STATUS :

1

2009.04

REVISDE AS COMMENTS

0

2008.11

FIRST REVISION

REV

DATE

INITIALS

SIGN

PREPARED

INITIALS CHECKED

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INITIALS APPROVED

SIGN

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DETAILS OF REVISION

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CONTENTS CLAUSE NO. DESCRIPTION

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1 GENERAL DESCRIPTION········································································································································· 5 1.1 INTENT OF DESIGN BASIC REPORT················································································································· 5 1.2 SCOPE OF DESIGN················································································································································ 5 1.3 DESIGN PHILOSOPHY ·········································································································································· 5 2 ELECTIC CONNECTION··········································································································································· 6 2.1 SLD FOR MAIN CONNECTION····························································································································· 6 2.2 SLD FOR HV-LV AUXILIARY POWER SYSTEM ······························································································ 7 3 SHORT CIRCUIT CURRENT CALCULATION AND EQUIPMENT ELECTION············································ 12 3.1 RESULT OF SHORT CIRCUIT CURRENT CALCULATION ········································································· 12 3.2 PARAMETERS OF MAIN EQUIPMENT ············································································································ 13 4 GENERATOR AND EXCITATION ·························································································································· 19 4.1 TYPE OF GENERATOR ········································································································································ 19 4.2 RATING····································································································································································· 19 4.3 DESIGN CRITERIA ················································································································································ 20 4.4 EXCITATION SYSTEM ········································································································································· 20 5 DESCRIPTION OF ELECTRIC EQUIPMENT LAYOUT··················································································· 21 5.1 LAYOUT OF GENERATOR OUTPUT SYSTEM ······························································································ 21 5.2 LAYOUT OF GT UT & ST ····································································································································· 21 5.3 LAYOUT OF 400KV SWITCHYARD ·················································································································· 21 5.4 LAYOUT OF 220KV SWITCHYARD··················································································································· 22 5.5 LAYOUT OF HV/LV SWITCHGEAR ··················································································································· 22 6 DC SYSTEM & UPS··················································································································································· 23 6.1 DC SYSTEM···························································································································································· 23 6.2 UPS·········································································································································································· 24 7 ELECTRICAL PROTECTION & CONTROL & AUTOMECHANISM ······························································· 25

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7.1 PROTECTION·························································································································································· 25 7.2 400KV & 220KV SWITCHYARD COMPUTERIZED MONITORING AND CONTROL SYSTEM··············· 30 7.3 CONTROL AND INSTRUMENTATION··············································································································· 31 7.4 CONTROL SYSTEM OF AUXILIARY WORKSHOP·························································································· 32 7.5 CHANGE-OVER MODE········································································································································· 33 7.6 UNIT FAULT WAVE RECORDER ······················································································································· 33 8 LIGHTNING PROTECTION & EARTHING SYSTEM ························································································ 33 8.1 LIGHTNING PROTECTION SYSTEM ················································································································ 33 8.2 EARTHING SYSTEM ············································································································································· 34 9 LIGHTING AND MAINTENANCE SYSTEM ········································································································· 34 9.1 POWER SUPPLY SYSTEM·································································································································· 34 9.2 CONTROL OF THE LIGHTING SYSTEM ·········································································································· 36 9.3 LIGHTING DISTRIBUTION BOX ························································································································· 36 9.4 CABLE, WIRE·························································································································································· 37 9.5 RACEWAY ······························································································································································· 37 10 CABLES & CABLING ············································································································································· 37 10.1 CABLES ································································································································································· 37 10.2 CABLING································································································································································ 38

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ANNEXURE ANNEXURE I SIZING CALCULATION FOR GENERATOR NEUTRAL GROUNDING SYSTEM ANNEXURE II SIZING CALCULATION FOR IPB&SPB ANNEXURE III SHORT CIRCUIT CURRENT CALCULATION ANNEXURE IV CALCULATION FOR CT SELECTION ANNEXURE V CALCULATION FOR PT SELECTION ANNEXURE VI CALCULATION FOR UNIT 220V BATTERY AND CHARGER ANNEXURE VII CALCULATION FOR UNIT AND COMMON AC UPS SYSTEM ANNEXURE VIII MCC LOADS CALCULATION

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1 General Description 1.1 Intent Of Design Basic Report In this design basis report, the design criteria and principle of electrical system and equipment of the plant, the equipment main parameters, control & operation philosophy, metering & protection shall be described. 1.2 Scope of Design The scope of this design includes all electrical system of the plant. The interface between the power plant and the transmission line shall be defined at the clamp of outgoing feeder mast inside power plant. 1.3 Design Philosophy 1.3.1 Basis of design The contract between SCMEC and APMPL. The contract between SCMEC/APMPL and manufacturer of generator. The contract between SCMEC and SWEPDI. All minutes of meeting for electrical up to now. 1.3.2 Code & Standard Electrical equipment and system for this project shall be designed, constructed, tested and installed in accordance with the latest editions of GB standards. Indian Electricity Rules & Acts and Applicable Indian standards shall be also considered as well. It shall be as per IEC standard and as per the contract specification. 1.3.3 Environmental condition The equipment shall be capable of continuous full load operation under the following conditions:(based on “Basic design technical requirement lists for TIRODA project (Input from APMPL)”) (1) Air temperature Design ambient air temperature:

Units

Value

℃

50

%

95

km/hr

5.9

(2) Relative humidity Design humidity: (3) Wind speed Average monthly highest:

5

Average monthly lowest:

km/hr

1.6

Basic wind speed:

m/sec

47

24 Hours Max：

mm

395

Hourly Max：

mm

150

15 Min：

mm

100

(4) Rainfall

(5) Seismic Zone (As per IS: 1893) (6) Plant elevation: (above flood leve) 1.3.4 Electrical design condition

II m

292

(1) Voltage Levels Following voltage levels shall be adopted for power station auxiliary motors. Consumer

Voltage Levels

P>2000 KW

11 kV

Fault level

40kA/3s

AC

160 kW< P≤2000 kW

6.6 kV

0.2kW