MOTOR AND GENERATOR PROTECTIONS.docx

MOTOR AND GENERATOR PROTECTIONS Basic Characteristics:      

State-of-the-art digital protections produced by prestigious world leading manufacturers Supplies incl. design, protection cubicle, putting into operation, training and service Optional solution according to application, power output, customer requirement Possible connection to the central control system Diagnostics of protections, events- and failure history For motors and generators of power outputs from 500 kW to 100 MW.

Flow Chart:

Protection Assembly:                  

Determined on the basis of criteria : power output, type of the set, customer´s requirements, price Selection of manufakturers : SIEMENS, ABB, ALSTHOM, SEG, General Electric Supply of further service components : notebook, source case for protection testing Possibility of delivering stand-by protections using the TE 5401 system Possibility of interconnecting protections via communication line and connection to the central control Flow chart of protections coded according to IEC 617 numeric codes: 81 - overfrequency and underfrequency 27 - undervoltage for blocking 59 - overvoltage, two-stages 64 F - rotor earth fault 32R - reverse power 87 G - differentia 67N - stator earth fault, directiona 40 - loss of field and asynchron.oper. 50 - def. time overcurrent, blocked by U< 51 - inverse time overcurrent 46 - unbalanced load Supply possibility of protections of transformers, bus-bars, mains - complex protecion solution

GENERATOR COMBINED CUBICLE PMES OF PROTECTIONS, MONITORING, EXCITATION AND SYNCHRONIZING Basic Characteristics:     

Complete regulation and protective system of turbo- or hydro-electric generator Supplies incl. design, cubicle, putting into operation, training and service Optional solution according to application, power output, customer´s requirements Possibility of connection to the central control system For motors and generators of power outputs from 500 kW to 100 MW.

Flow Chart:

Ochrany generátoru:    

preference digitálních ochran SIEMENS, ABB, ALSTHOM, SEG, GE dodávka dalších servisních komponentů - notebook, zdrojový kufr pro zkoušení ochran možnost dodávky záložních ochran se systémem TE 5401 možnost propojení ochran po komunikační lince a připojení k centrálnímu řízení

Monitorovací systém:   

elektrická měření, měření teplot, tlaků, vibrací, průtoků, otáček atd. provozní diagnostika stavu soustrojí, post mort, statistika přenos dat do centrálního řídícího systému po lince RS 485 nebo RS 422

Regulátor buzení:   

mikroprocesorová regulace regulační smyčky napětí, napětí se statikou, cos j, jalový výkon ochranné funkce: omezovače stator. a rotorového proudu, hlídání podbuzení, U/f funkce

BRUSHLESS EXCITATION SYSTEMS FOR GENERATORS AND

MOTORS Basic Charakteristics: 

Excitation of synchronous machines of power from 500 kW to 100 MW

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Excitation of machines with AC/DC exciters

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State-of-the-art microprocessor control with all additional functions

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Use of power semi-conductor elements by SEMICRON and Siemens - Eupec

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Optimum solution from the view point of field energy and speed of field suppression

Type series: Type

Use

BBS / G

brushless exciter for generators up to 500 MVA

BBS / M

brushless exciter for motors with exciter

Flow chart:

Specification of Technical Solution and Functions:             

Digital Tenel-AVR one-board microprocessor regulator built on circuits produced by leading manufacturers - INTEL, Thompson, etc. Compact regulation output cascade built on SEMICRON elements Variants of regulator deliveries, excitation and protections cubicle and/or complete generator switchboard with set measuring and control Stand-by unit of manual cotrol Choice possibility of regulation: Voltage - Power factor - Reactive power - Field current Implemented additional functions in AVR: stator and rotor current limiters, protection against machine oversaturation U/f, keeping guard over underexcitation limit Stand-by system of generator protections in AVR RS 485 serial communication interface by Modbus RTU protocol for connect. to central control Possibility of extension of AVR algorithms with auxil.drives control and set appliances control Diagnostic functions in AVR making putting into operation and operation checking easier Complete measuring of currents, voltages, outputs, power factor on the AVR display Fitting of AVR with EEPROM memory for storage of parameters for putting into operation Fitting of regulator with history and statistics for operation monitoring and set failure analysis

STATIC EXCITATION SYSTEMS FOR GENERATORS AND

MOTORS Basic Characteristics: 

Excitation of synchronous machines of power from 100 kW to 100 MW

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State-of-the-art microprocessor control with all usual additional functions

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Use of power semi-conductor elements by Siemens - Eupec

Type series: Type

Use

SBS 0 / G

static exciter for generators up to 1 MVA

SBS 1 / G

static exciter for generators 1-5 MVA

SBS 2 / G

static exciter for generators 5-20 MVA

SBS 3 / G

static exciter for generators 20-100 MVA

SBS 4 / G

static exciter for generators 100-500 MVA

SBS / M

static motor exciter

Technical Parameters: Dimensions and weight:

Type

width (mm)

depth (mm)

height (mm)

Ibn A

Ibmax A

weight (kg)

SBS0

1000

600

2 100

150

300

230

SBS1

1000

800

2 100

400

750

350

SBS2

1200

800

2 100

600

1100

600

SBS3

1200

800

2 100

800

1500

900

SBS4

1600

800

2 100

2000

3000

1600

Flow Chart:

Specification of Technical Solution and Functions:   

Compact solution including field transformer up to 80 kVA inside one cubicle Digital Tenel-AVR one-board microprocessor regulator built on circuits produced by leading manufacturers - INTEL, Thompson, etc Compact solution with excit.rectifier, field suppress.., over-volt. protection on semi-cond.modul..

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Possibility of field cubicle completing with complete generator and/or motor protection Choice possibility of regulation: Voltage - Power factor - Reactive power - Field current Implemented additional functions in AVR: stator and rotor current limiters, protection against machine oversaturation U/f, keeping guard over underexcitation limit Stand-by system of generator protections in AVR RS 485 serial communication interface by Modbus RTU protocol for connect. to central control Possibility of extension of AVR algorithms with auxil. drives control and set appliances control Diagnostic functions in AVR making putting into operation and operation checking easier Complete measuring of currents, voltages, outputs, power factor on the AVR display Fitting of AVR with EEPROM memory for storage of parameters for putting into operation Fitting of regulator with history and statistics for operation monitoring and set failure analysis.

TURN-KEY SUPPLIES OF POWER PLANTS Basic Characteristics:   

Capacity range of supplied generators from 100 kVA to 5 MVA Supplies of hydro-electric, steam, gas, and Diesel-electric power plants Complete supplies including design, provision of sub-supplies, erection, putting into operation, revision, operator training, service.

Flow Chart:

Component Specification:         

Component Specification: Source set - choice of prestigious producers, according to the customer´s requirements Output wiring and connection of LV and HV generators into power network Zero point solution Measuring and monitoring Digital protections of generator (General Electric, ABB, Siemens, Alsthom, SEG) Manual and automatic synchronizing instruments Power plant home consumption Connection to central control system and/or local control with PC and visualization

SOFT-STARTERS FOR ASYNCHRONOUS (SQUIRREL-CAGE) MOTORS Basic Characteristics:     

Electronic soft-starters of L.V. squirrel-cage motors of output power from 100 kW to 700 kW and H.V. squirrel-cage motors of output power from 300 kW to 1500 kW for low starting-load torque Programmable microprocessor control enables working comfort, fexibility and a number of additional functions Stepless and smooth control of voltage, torque and motor-speed according to required course of starting Compact solution in one cubicle Turn-key supply including service

Flow Chart:

Specification of Technical Solution and Functions:       

Use of power thyristors by Siemens - Eupec TENEL Microprocessor Control built on circuits produced by leading manufacturers (INTEL, Thompson, etc.) Adjustable starting-voltage, kick-start and starting ramp High allowable number of repeted starts Speed coupling LCD display A number of additional functions - measuring, failure history, protections (overload, overvoltage, loss of phasis, etc.) RS 485 serial communication interface by Modbus RTU protocol for remote control, monitoring and programming

FREQUENCY CONVERTERS FOR SYNCHRONOUS AND ASYNCHRONOUS MOTORS Basic Characteristics:      

Frequency converters for variable-speed drives with AC electromotors Use for L.V. and H.V. motors of output power from 100 kW to 2 MW State-of-the-art microprocessor control, precise motor-speed regulation, flexibility, energy savings and a number of additional functions Use of power semi-conduktor elements by Siemens - Eupec Compact solution in one cubicle Turn-key supply including service

Flow Chart:

Specification of Technical Solution and Functions:         

Digital one-board microprocessor TENEL Regulator built on circuits produced by leading manufacturers - INTEL, Thompson, etc. Converters built on Siemens - Eupec elements Fitting of regulator with EEPROM memory for storage of parameters for putting into operation Fitting of regulator with history and statistics for operation monitoring Operator dialog panel with graphic display and keyboard Representation of electric measuring and operating conditions on regulator display Additional drive protecting functions (overload, decrease in speed, underexcitation, etc.) Motor protection stand-by system (overvoltage, overcurrents, speed, etc.) RS 485 serial communication interface by Modbus RTU protocol for remote control, monitoring and programming