ATS MV Description

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We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. ABB s.r.o.

Created Haluza Based on Ext.doc.id Status

Approved Kubelka Customer Alpiq Generation (CZ) Doc. kind TECHNICAL DESCRIPTIONProject Title

ATS MV TESTSKLADNO K7 POWER PLANT

MAIN ELECTRIC SYSTEMS Ref. designation DCC

=7B__ &EEC100Resp. Project ID Document ID Rev. Release date Lang. Page

ABB s.r.o., Power Systems D1060 2013-10-25 en 1/ 34

7&&-AB-E0-DS-0007-0-EAlpiq Generation (CZ) s.r.o.Dubsk 257CZ - 272 03 Kladno

Customer Principal Customer Doc. No.

Kraftanlagen Power Plants GmbHRidlerstr. 31cD - 80339 Mnchen

TECHNICAL REPORT

ATS MV TESTS


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Doc.kind TECHNICAL DESCRIPTION

TitleATS MV TESTS

Resp. Document ID Rev. Lang. Page

ABB s.r.o., Power Systems en 2

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CONTENT

GENERAL............................................................................................................................................... 4

1 Switching-over sequence with overlapping.................................................................................. 5

1.1 TEST 1 - Transfer from operation mode No. 1 to operation mode No. 2 ................................... 51.1.1 Preconditions.............................................................................................................................. 51.1.2 Test start by................................................................................................................................ 5

1.1.3 Expected behavior...................................................................................................................... 51.1.4 Potential risks............................................................................................................................. 61.1.5 Check......................................................................................................................................... 6

1.2 TEST 2 - Transfer from operation mode No. 2 to operation mode No. 3 ................................... 71.2.1 Preconditions.............................................................................................................................. 7

1.2.2 Test start by................................................................................................................................ 71.2.3 Expected behavior...................................................................................................................... 71.2.4 Potential risks............................................................................................................................. 71.2.5 Check......................................................................................................................................... 8

1.3 TEST 3 - Transfer from operation mode No. 3 to operation mode No. 1 ................................... 91.3.1 Preconditions.............................................................................................................................. 9

1.3.2 Test start by................................................................................................................................ 91.3.3 Expected behavior...................................................................................................................... 91.3.4 Potential risks............................................................................................................................. 91.3.5 Check....................................................................................................................................... 10

1.4 TEST 4 - Transfer from operation mode No. 1 to operation mode No. 5 ................................. 111.4.1 Preconditions............................................................................................................................ 111.4.2 Test start by.............................................................................................................................. 11

1.4.3 Expected behavior.................................................................................................................... 111.4.4 Potential risks........................................................................................................................... 121.4.5 Check....................................................................................................................................... 12

1.5 TEST 5 - Transfer from operation mode No. 5 to operation mode No. 4 ................................. 13

1.5.1 Preconditions............................................................................................................................ 131.5.2 Test start by.............................................................................................................................. 13


1.6 TEST 6 - Transfer from operation mode No. 4 to operation mode No. 2 ................................. 151.6.1 Preconditions............................................................................................................................ 151.6.2 Test start by.............................................................................................................................. 151.6.3 Expected behavior.................................................................................................................... 151.6.4 Potential risks........................................................................................................................... 161.6.5 Check....................................................................................................................................... 16

2 Automatic activation of ATS Uninterrupted switching sequences......................................... 172.1 TEST 7 - Automatic activation of ATS by undervoltage U


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3.1 TEST 9 - Automatic activation of ATS by overvoltage U > 1,1 * Un (> 7.0kV)........................ 223.1.1 Test start by.............................................................................................................................. 22


3.2 TEST 10 - Transfer from operation mode No. 2 to operation mode No. 3 -

U>10% .............. 253.2.1 Preconditions............................................................................................................................ 253.2.2 Test start by.............................................................................................................................. 25


3.3 TEST 11 - Fire alarm in unit transformer box (main protection) ............................................ 283.3.1 Preconditions............................................................................................................................ 283.3.2 Test start by.............................................................................................................................. 28


3.4 TEST 12 - Simulation of failure in backup transformer (main protection) ............................. 303.4.1 Preconditions............................................................................................................................ 30

3.4.2 Test start by.......................................................................................................................... 303.4.3 Expected behavior.................................................................................................................... 303.4.4 Potential risks........................................................................................................................... 313.4.5 Check....................................................................................................................................... 31

4 Switching with time delay .......................................................................................................... 32

4.1 TEST 13 - Transfer from operation mode No. 2 to operation mode No. 3 if the voltagemeasuring system is faulty .................................................................................................................. 32

4.1.1 Preconditions............................................................................................................................ 324.1.2 Test start by.............................................................................................................................. 32

4.1.3 Expected behavior.................................................................................................................... 324.1.4 Potential risks........................................................................................................................... 33

4.1.5 Check....................................................................................................................................... 33

5 Other tests................................................................................................................................... 34


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1 Switching-over sequence with overlapping

1.1 TEST 1 - Transfer from operation mode No. 1 to operation mode No. 2

Switching-over sequence with overlapping will be carried out manually on ATS panel.

1.1.1 Preconditions

K7 POWER PLANT STATUS

Boiler MCRTurbine load

Home consumption 7BBT01


Tap changer for 7BBT01 in remote and auto YES NO

Voltage of 7BBT01 secondary side(shall be 6.3 kV)

Tap position of 7BBT01 (shall be 11)




Redundant power supply of all three feedwater pumps

YES NO

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.

Voltage on both inlets present and synchronizedProtection terminal REF activatedProtection terminals REF are measuring voltage on VTs, there is no failure in voltage measuring circuits

Initial status - inlet 7BBA01 on, coupling 7BBA04 off and 0BBD04 on, inlet 0BBD01 on, inlet7BBB01 on, coupling 7BBB04 off and 0BBC04 on, inlet 0BBC01 on operation mode No. 1

1.1.2 Test start by...

2x pushing of S42 push-button

1.1.3 Expected behavior

Desired response of ATS - transfer to operation mode No. 2, i.e. switching-over from inlet 0BBD01 tocoupling 7BBA04 and from inlet 0BBC01 to coupling 7BBB04.


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1.1.4 Potential risks

Trip of HVS systems.

1.1.5 Check

CB 7BBA01 7BBA04 0BBD01 7BBB01 7BBB04 0BBC01 0BBC04 0BBD04

Initial status X O X X O X X X

Response X X O X X O X X

Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load



Failures of technology consumersYES NO

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Questions / Points


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1.2.1 Preconditions


Boiler MCR

Turbine loadHome consumption 7BBT01


MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Initial status - inlet 7BBA01 on, coupling 7BBA04 on, coupling 0BBD04 on, inlet 0BBD01 off,

inlet 7BBB01 on, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 off operation mode No. 2




Desired response of ATS - transfer to operation mode No. 3, i.e. switching-over from inlet 7BBA01 toinlet 0BBD01 and from inlet 7BBB01 to inlet 0BBC01.


Trip of K7 power plant.


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1.2.5 Check


Initial status X X O X X O X X

Response O X X O X X X X

Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load




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Questions / Points


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Switching-over sequence with overlapping will be carried out manually on DCS panel.

1.3.1 Preconditions


Boiler MCR



MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Initial status - inlet 7BBA01 off, coupling 7BBA04 on and 0BBD04 on, inlet 0BBD01 on, inlet

7BBB01 off, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 on operation mode No. 3


2x pushing of DCS buttons for state 1


Desired response of ATS - transfer to operation mode No. 1, i.e. switching-over from coupling 7BBA04to inlet 7BBA01 and from coupling 7BBB04 to inlet 7BBB01.


Trip of K7 boiler.


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1.3.5 Check


Initial status O X X O X X X X

Response X O X X O X X X

Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load



Failures of technology consumers

YES NO

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Questions / Points


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1.4.1 Preconditions


Boiler MCR




YES NO

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.

Voltage on both inlets present and synchronized

Protection terminal REF activatedProtection terminals REF are measuring voltage on VTs, there is no failure in voltage measuring circuits

Initial status - inlet 7BBA01 on, coupling 7BBA04 off, coupling 0BBD04 on, inlet 0BBD01 on,inlet 7BBB01 on, coupling 7BBB04 off and 0BBC04 on, inlet 0BBC01 on operation mode No. 1


2x pushing of DCS button for state 5


Desired response of ATS - transfer to operation mode No. 5, i.e. switching-over from inlet 0BBD01 tocoupling 7BBA04 and from inlet 7BBB01 to coupling 7BBB04.


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Trip of HVS systems and K7 boiler.

1.4.5 Check


Initial status X O X X O X X X

Response X X O O X X X X

Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load




YES NO


YES NO

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Questions / Points


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1.5.1 Preconditions


Boiler MCR



Redundant power supply of all threefeed water pumps

YES NO

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.



Initial status - inlet 7BBA01 on, coupling 7BBA04 on, coupling 0BBD04 on, inlet 0BBD01 off,inlet 7BBB01 off, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 on operation mode No. 5




Desired response of ATS - transfer to operation mode No. 4, i.e. switching-over from inlet 7BBA01 to

inlet 0BBD01 and from inlet 0BBC01 to inlet 7BBB01.


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1.5.5 Check


Initial status X X O O X X X X

Response O X X X X O X X

Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load




YES NO


YES NO

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Questions / Points


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1.6.1 Preconditions


Boiler MCR




YES NO

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.



Initial status - inlet 7BBA01 off, coupling 7BBA04 on and 0BBD04 on, inlet 0BBD01 on, inlet7BBB01 on, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 off operation mode No. 4


2x pushing of DCS button for state 2


Desired response of ATS - transfer to operation mode No. 2, i.e. switching-over from inlet 0BBD01 to

inlet 7BBA01.


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1.6.5 Check


Initial status O X X X X O X X


Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load




Voltage of 7BBT01 secondary side

(shall be 6.3 kV)






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Questions / Points


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2 Automatic activation of ATS Uninterrupted switching sequences

2.1 TEST 7 - Automatic activation of ATS by undervoltage U


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2.1.4 Check




Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Switching - immediately YES NO

Operation mode No.


Boiler MCR

Turbine load






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Questions / Points


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2.2 TEST 8 - Automatic activation of ATS by undervoltage U


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Desired response of ATS - switching-over from inlet 0BBD01 to 7BBA01 and 0BBC01 to 7BBB01 from operation mode No. 3 to mode No. 2. ON and OFF commands will sended to relevant CBs at the sametime. After switching must be ATS Block and Off.


Trip of HVS systems and K7 boiler due to allowed voltage range from +- 20% of consumers.

2.2.4 Check




Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NOSwitching immediately after 5seclower then 80% of Un (5.04kV)

YES NO

Operation mode No.


Boiler MCR

Turbine load


Home consumption 0BBT01Tap changer for 7BBT01 in remote and auto YES NO

Tap changer for 0BBT01 in local and not in auto YES NO

Voltage of 7BBA

Tap position of 7BBT01



YES NO

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Questions / Points

Note:

Voltage on 35kV bus bar could be changed back to normal conditions. Separation from other consumer

also not longer necessary.


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3 Automatic activation of ATS Residual voltage switching

3.1 TEST 9 - Automatic activation of ATS by overvoltage U > 1,1 * Un (> 7.0kV)


Boiler MCR

Turbine load









MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.



Initial status - inlet 7BBA01 on, coupling 7BBA04 on and 0BBD04 on, inlet 0BBD01 off, inlet7BBB01 on, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 off operation mode No. 2


1. Tap changer for 7BBT01 shall be switched to local mode and not automatic

Tap changer for 7BBT01 in localmode and not in auto

YES NO



2. Increase the voltage by tap changer


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Desired response of ATS: the CBs (7BBA01, 7BBB01) CLOSE commands of the switching sequencesare transmitted. The CBs (0BBC01, 0BBD01) closing occurs if the busbar residual voltage has dropped to0,4.Un. Transfer to operation mode No. 3, i.e. switching-over from inlet 7BBA01 to inlet 0BBD01 and frominlet 7BBB01 to inlet 0BBC01.

After switching must be ATS Block and Off.


Trip of HVS systems and K7 boiler due to high voltage.

3.1.4 Check




Check

MV ATS

Ready YES NO

On YES NO

Remote YES NOBlock YES NO

Operation mode No.


Boiler MCR

Turbine load



Tap changer for 7BBT01 in local and not in auto YES NO







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Questions / Points


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3.2 TEST 10 - Transfer from operation mode No. 2 to operation mode No. 3 -

U>10%

3.2.1 Preconditions


Boiler MCR

Turbine load

Home consumption 7BBT01Home consumption 0BBT01







MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.

Voltage on both inlets present and synchronizedProtection terminal REF activated

Protection terminals REF are measuring voltage on VTs, there is no failure in voltage measuring circuits

Initial status - inlet 7BBA01 on, coupling 7BBA04 on, coupling 0BBD04 on, inlet 0BBD01 off,inlet 7BBB01 on, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 off operation mode No. 2


Settings DU>0,1.Unby tapchanger 7BBT01 and (or) 0BBT01. Therefore voltage of 7BBT01 shall beincreased by 5 positions to >6.678kV and voltage of 0BBT01 shall be decreased by 5 positions to 6.678 kV)


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Tap changer for 0BBT01 in local and not inauto

YES NO

Voltage of 0BBT01 secondary side(shall be


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Questions / Points


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3.3 TEST 11 - Fire alarm in unit transformer box (main protection)

Simulation of active one sensor inside of unit transformer box. FAS will send command to protectionsystem to deenergize unit transformer, auxilliary transformer and ripple filter. As result ATS shall act withinterruption - switching with residual voltage.

NOTE: This test will done together with FAS test and deluge test in unit transformer box.

3.3.1 Preconditions


Boiler MCR

Turbine load




YES NO

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Initial status - inlet 7BBA01 on, coupling 7BBA04 on and 0BBD04 on, inlet 0BBD01 off, inlet

7BBB01 on, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 off operation mode No. 2


Simulation of active one maximum temperature detectors FAS inside of unit transformer box.


Desired response of ATS: the CBs (7BBA01, 7BBB01) CLOSE commands of the switching sequencesare transmitted. The CBs (0BBC01, 0BBD01) closing occurs if the busbar residual voltage has dropped to

0,4.Un. Transfer to operation mode No. 3, i.e. switching-over from inlet 7BBA01 to inlet 0BBD01 and frominlet 7BBB01 to inlet 0BBC01.



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3.3.5 Check




Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load




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Questions / Points


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Trip of HVS system.

3.4.5 Check




Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.


Boiler MCR

Turbine load




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Questions / Points


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4 Switching with time delay

4.1 TEST 13 - Transfer from operation mode No. 2 to operation mode No. 3 if the voltage

measuring system is faulty

4.1.1 Preconditions


Boiler MCRTurbine load



MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Operation mode No.



Initial status - inlet 7BBA01 on, coupling 7BBA04 on, coupling 0BBD04 on, inlet 0BBD01 off,inlet 7BBB01 on, coupling 7BBB04 on and 0BBC04 on, inlet 0BBC01 off operation mode No. 2


Simulation of failure in voltage measuring circuits - tripping FCM18 in the panel 7BBA01 and 7BBB01.

2x pushing of S43 push-button4.1.3 Expected behavior

Desired response of ATS: switching-over from inlet 7BBA01 to 0BBD01 and 7BBB01 to 0BBC01 from

operation mode No. 2 to mode No. 3. Switching leads to power supply interruption the delay corresponds tothe time limit of REF internal logic (1 s).



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Trip of K7 boiler.

4.1.5 Check




Check

MV ATS

Ready YES NO

On YES NO

Remote YES NO

Block YES NO

Switching time delay 1s YES NO

Operation mode No.

MV SWITCHGEARS

7BBA01 FCM18 - OFF YES NO

7BBB01 FCM18 - OFF YES NO


Boiler MCR

Turbine load


Home consumption 0BBT01Redundant power supply of all three feed waterpumps

YES NO


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Questions / Points


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5 Other tests

Other tests were tested in factory during FAT, tested then on site without any motor load. These tests were

sufficient and there is no need to repeat them.

Documents

ATS MV Description