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0 EN 1/39 CN-OR-HT1801

Harbin Huitong Electric Power Engineering Co., Ltd.File no.:-

/Project: Plant section:

Cao Ngan Coal-Fired Thermal Power Plant ElectricPrepared: Checked: Approved:

Form No.:

CN-HTF-1801OPERATION DOCUMENTATION

:

Date:

2011-10-29 Operation Regulation:

DC System Operation

Regulations

Project:

Cao Ngan Coal-Fired Thermal Power Plant



Cao Ngan Power Plant Operation Regulation Electric-DC System

1. (EQUIPMENT STANDARD) ...................................................................................... 3

1.1 (M AIN W ORKSHOP DC S YSTEM EQUIPMENT STANDARD ) ............. ...... .... 31.2 (G RID CONTROL B UILDING DC S YSTEM EQUIPMENT C RITERION ) .... ... .... 41.3 (S TORAGE B ATTERY W ORKING PRINCIPLE ) ................................. .......................... 61.4 (S TORAGE B ATTERY I NSPECTION A ND M AINTENANCE ) .................... ............ ... 7

2. (STRUTURE OF DC SYSTEM) ...................................................................... 8

1.5 (G ENERAL D ESCRIPTION ) ................................................................................................... 81.6 ....................................................................................................................... 9

3. (DC SYSTEM WORK PRINCIPLE) .................................................. 10

1.7 (S YSTEM I NTRODUCE ) .................................................................................................. . 101.8 (W ORK PRINCIPLE ) ....................................................................................................... 131.9 (C HARGER PROTECTION FUNCTION ) .......................................... ......................... 131.10 SUPERVISOR BOX (S UPERVISOR BOX I NTRODUCE ) .......................................... ......................... 141.11 PZW (PZW I NTELLIGENT SUPERVISORY U NIT D ATE COLLECTION I NSTRUCTION ) ............................................................................................................................................... 18

1.12 WDCX-620 (WDCX-620 DC S YSTEM M ICRO -COMPUTER I NSULATION O NLINE M ONITOR D EVICE ) ....................................................................................................... 22

4. (START AND OPERATION METHOD OF CHARGER DEVICE) 25

1.13 (B OOSTER CHARGE ) ....................................................................................................... 251.14 (B ATTERY UNIT CHARGE ) ................................................................................. ...... 251.15 (S TART CHARGER ) ............................................................................................. .. 25

5. (LOAD DISTRIBUTION WHEN OPERATE NORMAL LY) ....... 26

1.16 (M AIN W ORKSHOP DC S YSTEM ) ........................................ ........................... 261.17 (DC S YSTEM O F G RID CONTROL BUILD ) ......................... ....................... ... 30

6. (OPERATION REGULATION AND MAINTENANCE) ............... 34

1.18 (O PERATION PRESCRIPTION ) ........................................................................ ............... 34

1.19 (O PERATION A ND M AINTENANCE ) ............................................................. .................. 34

7. (FAULT DISPOSAL) .................................................................................................. 36

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1.20 (DC SYSTEM EARTH CONNECTION ) ............................................ ........................... 361.21 (B ATTERY FAULT D ISPOSAL ) .......................................... ............................. 371.22 PZW32-200(1300)A H/220V (CONTROL BOX OF PZW32-

200(1300)A H/220V DEVICE IS FAULT ) ....................................................................................................... 381.23 (I NTELLIGENCE MONITOR FAULT ) .......................................... ......................... 40

1.24 :(M ICROPROCESSOR INSULATION ONLINE MONITOR DEVICE FAULT ) 41

CN-OR-HT1801 Rev.0 2/43






:250V

Charger output voltage: 2 50 V

:≤2%(Ioz)

Stabilizing current accuracy: ≤2 %( Io z)

: ≤2%(Voz)

Equalized charge stabilizing voltage accuracy: ≤2 %( Voz)

: ≤2%(Voz)

Floating charge stabilizing voltage accuracy: ≤2 %( Voz)

: ≤2%

Grain wave coefficient: ≤2 %

: ≤60dB

Noise: : ≤60dB

: ≤40

Main circuit temperature rising: ≤40

: ≤60

Main transformer temperature rising: ≤60

: 20MΩ

Insulation resistance: the insulation resistance between busbar and

ground is more than 20M

: , 50Hz,AC2000V 1M1N

.

Dielectric strength: Test secondary control busbar to ground insulation

resistance with 50HZ,AC2000V, should not be flashover and breakdown.

1.2 ( Grid Control Building DC System Equipment

Criterion)

1.1.3 (Grid Control Building Storage Battery Criterion)

battery type CFM—200Z

V rated voltage 2Ah 200

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Ten-hour-ratio rate capacity

Discha

rgeRatio

Ten-hour-rate1.80V

Final voltage current A 20

capacity Ah 200

Three-hour-rate

1.80V

Final voltage

current A 50

capacityAh

150

One-hour-rate1.75V

Final voltage current A 110

capacity Ah 110

1.1.4 PZW-

PZW-full automation DC power source device main technique date:380V±10%

AC input voltage

:50Hz±2Hz

Frequency of AC voltage

:350A

Charger output current

:250V

Charger output voltage

:≤2%(Ioz)

Stabilizing current accuracy

: ≤2%(Voz)

Equalized charge stabilizing voltage accuracy

: ≤2%(Voz)

Floating charge stabilizing voltage accuracy

: ≤2%

Grain wave coefficient

: ≤60dB

Noise: ≤60dB

: ≤40

CN-OR-HT1801 Rev.0 5/43




Main circuit temperature rising: ≤40

: ≤60

Main transformer temperature rising: ≤60

: 20MΩ

Insulation resistance: the insulation resistance between busbar and

ground is more than 20M

: , 50Hz,AC2000V 1M1N

.

Dielectric strength: Test secondary control busbar to ground insulation

resistance with 50HZ,AC2000V, should not be flashover and breakdown.1.3 (Storage Battery Working Principle)

1.1.5 CFM—1300Z(200Z)

CFM—1300Z(200Z) type storage battry is valve action stationary lead

acid batteries.

1.1.6 103 , 2.23V.

Each group storage battery have 103 battries, each battery voltage is2.23V.

1.1.7 :

There are reactions as follows when lead acid battery is charged and

discharged:

(discharge):PbO2+2H2SO4+Pb 2PbSO4+2H2O

(charge): 2PbSO4+2H2O PbO2+2H2SO4+Pb

, , .

At end of charge positive pole sends out oxygen, negative pole sends out

hydrogen

CFM(Z) , ,

. , ,

, , ,

, , ,

:

CN-OR-HT1801 Rev.0 6/43






), , .(Neither

Over discharge (discharge voltage lower than final voltagr)nor over

charge(charge voltage higher than floating charge for a long time)should

be allowed.The batteries should be charged immediately after their

discharge or the batteries’life will be adversely

affected.Time,voltage,current and temperature should be recorded at

every time of discharge.)

1.1.12 , .(Not

organic solvent but the soap water is permitted to clean the surface of

the batteries.The dry cloth easily producing electrostatic should be

avoided.)

2. (Struture Of DC System)

1.5 (General Description)

#1 2 , (

#1 ), ( 2 ,

#1 , #2 , ),

. #1 #1

, #2 #2

. #1 2 ,

. #1 380V , #2

380V , 380V 1B .

The DC power system primarily consists of chargers (No.1,No.2 and back-

up), intelligent supervisory unit (arranged in No.1 charger panel) I

and II busbar sections feeder panels (two in main

workshop i.e No.1 and No.2 feeder panels for busbar

sections I and II and one in electric network control room) DC

system micro-processor insulation on-1ine monitoring unit(one arranged

inside No.1 feeder panel for busbar section I in main workshop and

the other inside the feeder panel for busbar section I in electric network

control room) No.1 charger mainly fulfills charge for No.1 battery

bank and supply power for busbar section I load, simultaneity the main

tasks of No.2 charger are to charge No.2 battery bank and supply power

for busbar section II load When No.1 and No.2 chargers are fault or

out of service due to faults the standby charger can be put into

operation instead #1 charger AC power comes from 380V

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emergency 1 section; #2 charger AC power comes from 380V emergency

2 section, standby charger AC power comes from 380V emergency 1B

section.

1.6

.

Charger is made up of AC unit, rectify module, filter unit control

unit and monitor unit.

2.1.1 T , .

AC unit is consisted by isolation transformer T. Use to isolate and

sampling.

2.1.2 , 210V .

, 80 ,T1

T2 , , 60 , T1 T2

, ,JK2 , .

Rectify module is consisted of integrated module, rectify 210V AC to

pulsating DC current, rectify module of main workshop system has

temperature relay itself, when the temperature of controlled silicon over

80 degree, put in T1 and T2, start fan, when the temperature of

controlled silicon less than 60 degree, de-energized T1 and T2, stop fan,

JK2 is AC fan power source switch, when normal operation mustn’t break.

2.1.3 (PZW type full automation charging controller) ,

.

Control unit is consisted of PZW type full automation charging controller.

Sampling AC, DC signal and control charger automatic operation accord

with setted parameter is its main function.

2.1.4 CPU (FPO-C32T) (FPO-A80)

(FPO-16X) , #1 2

#1 2 , .

System intelligent supervisory unit is made up of CPU module (FPO-

C32T), Analog quantity collection moudle (FPO-A80), switch quantity

collection module (FPO-16X). Use to collect and deal with NO 1 2standby charger, and show the operation date and fault information at

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right time.

2.1.5 WDCX-620 ,

. ,

JK4 , . , JK4.

DC system microcomputer insulation monitor device is consisted of

leakage transducer compounded. Used to monitor DC system busbar

voltage and branch insulation. When 1 busbar fault, 2 busbar in normal

running, closed JK4, supply power to device.when 1 busbar is normal,

forbid closing JK4.

3. (DC System Work Principle)

1.7 (System Introduce)

1ZK 4ZK 7ZK

,2ZK 5ZK 8ZK 9ZK

,3ZK 6ZK ,10ZK 11ZK

,12ZK 15ZK .

8ZK 9ZK 12ZK 13ZK 14ZK 15ZK

, , ,

, ,.13ZK 14ZK , (

#1 #1 ) . (

#1 ), 3ZK 8ZK , 10ZK

, 10ZK . #1

.

1ZK 4ZK 7ZK are AC input switch, 2ZK 5ZK 8ZK

9Zk are DC input switch , 3ZK 6ZK is battery switch,

10ZK 11ZK are battery group test switch, ,12ZK to 15ZK is busbar

switch. 8ZK 9ZK 12ZK 13ZK 14ZK 15ZK is

machine mutual lock switch. So the only one switch can close, if the

other one need to close must open the closed one so that the two

batteries won’t parallel and coming into being circumfluence, influence

storage battery life-span. 13ZK 14ZK is busbar connection switch. It

input only at the special time (eg. NO1 charger standby charger and NO1

storage battery all fault) when test the battery unit, open 3ZK 8ZK first, then insert the corresponding resistance in connecting terminal,

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closed 10ZK .The NO 1 charger supplies electricity to NO 1 busbar

normally. DC system diagram as below:

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1.8 ( Work Principle)

3.1.1 , ,

2% .

Charger circuit adopts three-phase full controlled bridge rectifier torectify AC into pulsating DC. Then make DC grain wave coefficient less

than 2% by reactor and capacity.

3.1.2 TC787 , , ,

.

TC787 is charger circuit core, adopts dual loop feedback, stabilize voltage

and current though controlling phase-shift trigger.

3.1.3 : , ,

( 130A, 20A),

(243V) , , 243V,

8 , , 230V ,

, , ,

.

Charger working programme: after started, charger runs in steady flow,

charge constantly for the battery according to the enactment current

value in advance. (Main workshop system is 130A, grid control room

system is 20A). When charger electrical stress reach equalized charge

value (243V), device change into equalized charge stabilizing voltage

state, charger voltage is 243V, continues 8 hours, and then device

change into equalized charge floating voltage state, charger voltage is

230V, then device will work in floating charger mode. All above process is

auto, when AC is dead and resume, device repeat the process above.

1.9 (Charger Protection Function)

3.1.4 : ( ) ,

( 350A, 60A),

, , , ,

, , .

Limited current protective function: when charger running in automatic

stabilizing voltage mode (Equalized charge or floating charge), if outputcurrent reach limit current value (main workshop system is 350A, grid

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control room system is 60A), limit current work. Charger current will not

increase, stabilize at limit current value, charger will not stabilize

voltage, when load reduces, charger return to stabilize voltage state.

3.1.5 360A

65A

“ ”

Overcurrent protection function: when charger output current more than

overcurrent value (main workshop system is 360A, grid control room

system is 65A), Overcurrent protection act. Charger pulse is closed down.

Charger DC no output, after exclude fault, should press “ overcurrent

replace” button, then charger can work again.

1.10 supervisor box (Supervisor Box Introduce)

3.1.6

Front panel: front panel is consisted of operation keyboard and indicator

light.

3.1.7

“ ”

Operated keyboard: stabilized current, equalized charge, floating charge

and overcurrent reset. Though stabilized current, equalized charge,

floating charge button, can change the state of charger artificially. When

overcurrent occurred Overcurrent protection act. Charger pulse is closed

down. Charger DC no output, after exclude faul t, should press

“overcurrent replace” button, then charger can work again.

3.1.8 (State Indicator Lamp)

1)

Stabilized current indicator lamp: stabilized current state light

2)

Equalized charge indicator lamp: equalized charge state light

3)

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Floating charge indicator lamp: floating charge state light

(Alarm Indicator Lamp)

1)

Overcurrent a larm: output current of charger over def in i ted value

l ight

2)

Fault alarm: charger output current lower than definite value light3)

Busbar overvoltage: busbar voltage over definite value light

4)

Busbar undervoltage: busbar voltage under definite value l ight

5)

Battery undervoltage: battery voltage under definite value light

6)

AC no-voltage: when AC no-voltage, light

3.1.9

Fault sound release button: when fault happen, fault sound start-up, until

fault is eliminated, in this period can press the button contact sound.

3.1.10

(Housing Plug-in Components)

8AJ 065 1361 12V 8AJ

065 1362 24V 8AJ 065 1363

CN-OR-HT1801 Rev.0 15/43




8AJ 065 1364 8AJ 065 1365 8AJ

065 1366

Face to engine box ,from left to right there is: pulse panel 8AJ 065

1361 ,12V power source panel 8AJ 065 1362 , 24V

power source panel 8AJ 065 1363 busbar voltage monitor

panel 8AJ 065 1364 ,transducer panel 8AJ 065

1365 charger control panel 8AJ 065 1366 .

1)

6

Pulse panel form 6-route pulse, spring controlled silicon open lead.

2)12V 12V

12V power source panel supply 12V work power for device

3)

24V 24V

24V power source panel offer 24V work power for device.

4)

Busbar voltage monitor panel offer abnormal busbar voltage alarm.

a)

3RP4 245V

3RP4 Busbar overvoltage setting relay, busbar overvoltage act

value is 245V.

b)

3RP3 198V

3RP3 Busbar undervoltage setting relay, busbar undervoltage act

value is 198V.

5)

Transducer panel collect output voltage of charger busbar voltage

battery voltage.

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6)

Charger controlled panel set charger running parameter and relevant

alarm.

a) 2RP11 360A 65A

2RP11: charger output overcurrent, setting value is 360A (main

workshop), 65A (grid controlled room).

b) 2RP12 180V

2RP12: charger output undervoltage, setting value is 180V.

c) 2RP13 243V

2RP13: stabilized current change equalized charge voltage setting

value is 243V

d) 2RP14 200V

2RP14:battery undervoltage, setting value is 200V.

e) 2RP6 350A 60A

2RP6 Charger max output current, definite value is 350A(main

workshop), 60A (grid controlled room).

f) 2RP7 230V

2RP7:floating charge voltage adjustment, definite value is 230V.

g) 2RP8 243V

2RP8: Equalized charge voltage adjustment, definite value is 230V.

h) 2RP9 130A 20A

2RP8: stabilized current voltage adjustment, definite value is

130A( main workshop),20A (grid controlled room).

i) 2RP10

2RP10 Manual voltage regulating potentiometer

7)

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2RP10

(There

are two works mode inside device: hand-operation and automatic-

operation, (forbid other person operate except checkout person).

Automatic-operation is closed loop controlled. It needn’t adjustment

in charge process by person. Hand –motion is opened loop controlled,

though adjust 2RP10, can control charger output voltage, this time it

hasn’t stabilized voltage and stabilized current function. Only

automatic-operation can’t work use hand-operation mode, the

charger should not be operated in the manual way for a long time.)

1.11 PZW ( PZW Intelligent Supervisory Unit Date

Collection Instruction)

3.1.11 4-20mA 5

6

All date collection though transducer of display device. It is 4-20mA

Signal 5 end is the positive output end ,6 end is the negative

output end ,concrete as follows:

1 V1 5 6

#1 charger voltage V1 5 6

1 A1 5 6

#1 charger current A1 5 6

1 V2 5 6

#1 battery voltage V2 5 6

1 A2 5 6

#1 battery current A2 5 6

V2 5 6

Standby charger voltage V2 5 6

A2 5 6

Standby charger current A2 5 6

2 V1 5 6

CN-OR-HT1801 Rev.0 18/43




#2 charger voltage V1 5 6

2 A1 5 6

#2 charger current A1 5 6

2 V2 5 6

#2 battery voltage V2 5 6

2 A2 5 6

#2 battery current A2 5 6

Alarm date definite as follow:

250V

Charger output overvoltage 25 0V

180V

Charger output undervoltage 18 0V

360A( ),65A( )

Charger output current 360A(main workshop), 65A(grid controlbui ld ing)

245V

Battery overvoltage 24 5V

200V

Battery undervoltage 20 0V

3.1.12 PZW (PZW Intelligent Supervisory Unit System

Information Instruction)

PZW DC 24V, :0-55 .

PZW intelligent supervisory unit control voltage is DC 24V, require

environment temperature as 0-55 .

PLC 15 ,

CHARGER DISPLAY .. NEXT BATTERY DISPLAY ,

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. BACK SYSTEM MENU

, :

It need fifteen seconds for PLC communication inspection and system

initialization after system electrify, then display CHARGER DISPLAY

picture , in thi s picture we can see charger vol tage

current state fault display and so on. Press NEXT button display

BATTERY DISPLAY picture, can see battery voltage and battery current

and using position of fuse press BACK button system return to SYSTEM

MENU main menu, it can carry out a few operation as follow:

(1)CHARGER

CHARGER: charger information display

(2)BATTERY

BATTERY: battery information display

(3)ALARM

ALARM: alarm information inquiry

(4)CHARGER SETUP

CHARGER SETUP: set up charge alarm and setting value

(5)BATTERY SETUP

BATTERY SETU:set up battery alarm and setting value

(6)CONTRAST SETUP

CONTRAST SETUP: set up contrast

(7)DISPLAY SETUP

DISPLAY SETUP: set up display

(8)TIME SETUP

TIME SETUP: set up display

3.1.13 PZW (PZW Intelligent Supervisory

Unit Simple Fault And Possible Reason)

1) (Display not exact):

(Possible reason):

a)

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Display calibration setup value input wrongly

b)

Front transducer fault or connection wrong

c)

Device collection fault or connection wrong

2) (Alarm can’t take back)

(Possible reason):

a)

fault doesn’t eliminate

b)

output relay contact point conglutination

c)

external zone connetion is wrong or fault

3) device no react or display scarcity

: Possible reason

a) check the power of device is normal or not

b) PLC the communication line

between screen and PLC is normal or not

c) PLC (ERROR) PLC alarm light flash or not

4) PLC : There is no communication between

PLC and isolate online supervisory device

a) PLC (Check connection between device

and PLC)

b) PLC , 0.5 .(PLC

or device send and receive normally, flash rate is o.5 per second.)

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1.12 WDCX-620 (WDCX-620 DC System Micro-

computer Insulation Online Monitor Device )

3.1.14

WDCX-620 (Main Character Of WDCX-620)

1) WDCX-620 CPU , ,

, .(WDCX-620 device hardware adopt overall

line inside CPU, integration high, resist interruption ability is strong,

consume power less.)

2)

.(Adopts automatic track software

lock phase work principle.)

3) , , .

(Resistance fixed value skip limit start, work stabilization, can

categorize three line earth connection fault at one time.)

4) ,

.(Earth connection alarm, undervoltage alarm overvoltage

alarm of this device has two independent open points; can suit all

kinds need of site.)

5) 16 , ( ) ,

.(It can remember 16 earth connection fault,

insulation dropping fault, the information of device won’t lost if

device power off.)

6)

.(Perfect self-inspect self-adjust function.)

7) . ≤ 20KΩ; ,

30KΩ-40KΩ .(It can division busbar earth connection,

line earth connection and differentiate resistance of earth connection

≤20 KΩ, the capacity of line is less, can reach 30KΩ-40KΩ or so.)

3.1.15

WDCX-620 (WDCX-620 device technical index)

1) :DC500V (voltage class: Below DC 500V)

2) :DC220V/5A (relay contact point capacity)

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3) :AC220V±10% 50HZ DC220V±10%(power source:

AC220V±10% 50HZ DC220V±10%)

4) (using condition of device)

: 0-55 (environment temperature: 0-55 ) : ≤90% (humidity: ≤90%)

:80-110Kpa (atmosphere pressure:80-110Kpa)

3.1.16

WDCX-620 (function of button in front panel of WDCX-620

device)

1) ‘menu’( ) : , “ run menu…”(

); ‘ menu’( ) ‘ reset’( ) ,‘ reset’( ) , ‘ menu’( ) ,

“ debug menu…”( );(menu’key : press this key ,spring

out“run menu…”, then press ‘menu’first and then press ‘reset’later,

then release ‘reset’ ,after release ‘menu’ enter “debug menu…”)

2) ‘esc’( ) : ;(Use

‘esc’for backing to upstair menu or enter normal statue.)

3) ‘reset’( ) : ,, ‘ menu’( ) “ debug

menu…”( );(‘reset’ press this button can make the software

running from begin, general use while crashing , At the same time , can

cooperate with key of ' menu ' (menu ) and use entering " debug menu " …"( debug

menus);)

4) ‘ok’( ) : ;(‘ok’ confirm the operation

before)

5) ‘↑ ↓ ← →’ : .(‘↑ ↓ ← →’:

Use to select the function and date needed)

3.1.17 WDCX-620 (WDCX-620 device front panel

indication light function)

1) : , ;

( section section busbar earth connection l ight: When earth

connection occurs, i t is l ight , i t go out when earth connection

eliminate.)

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2) : , ;(Power light: when device is

energized it light all the time.)

3) : , ;(Running light: when device

running, it is light.)

4) : ;(Chief

earth connection alarm light: whatever section busbar or line of

busbar occur earth connection fault the light lights.)

5) : , ;(Fault light: when

fault occur inside device light until fault eliminated)

6) : , ;(Overvoltage alarm

light: the light is bright when overvoltage, when the fault eliminatedit is going out.)

7) : , ;(Undervoltage

alarm light: the light is bright when undervoltage, it is going out after

fault eliminated.)

8) : , ,

.(Low frequency indication light, when earth

connection occur, device checkout which line connect ground the

relevant light is bright, the light go out after line is checked out.)

3.1.18 WDCX-620 (WDCX-620 DC system

insulation online supervisory device value identify as follow):

1) : 245V ( section busbar overvoltage)

2) : 5S ( section busbar overvoltage delay)

3) : 198V ( section busbar undervoltage)

4) : 5S ( section busbar undervoltage delay)

5) : 245V ( busbar overvoltage)

6) : 5S ( busbar overvoltage delay)

7) : 198V( busbar undervoltage)

8) : 5S ( busbar undervoltage delay)

CN-OR-HT1801 Rev.0 24/43




4. (start and operation method of charger device)

1.13 (Booster Charge )

, , 1, : 3ZK, 8ZK 7ZK,

1 , 1 .

, 8ZK, 3ZK, 1

1 , . 2

.

The first used storage battery should be booster charge, generally drop

out load at this time, for example, additional charge #1 battery unit. The

process as follow: disconnect 3ZK, close 8ZK 7ZK, then the standby

charger will booster charge #1 battery unit, #1 charger supply to

section busbar normally. When charger turn into floating charge state,

can disconnect 8ZK, close 3ZK,#1 battery was floating charged by #1

charger, supply to section busbar . #2 battery is same.

1.14 (Battery unit charge)

The method is as same as booster charge battery unit.

1.15 (Start charger)

1ZK-6ZK 12ZK 14ZK, 1 1

, . 2 2

, , .

, . ( ):

3ZK 2ZK 1ZK, , 12ZK,.

Close 1ZK-6ZK 12ZK 14ZK when use this device normally,

namely #1 charger floating charge to #1 battery unit, and supply to

section busbar load contemporary. #2 charger floating charge to #2

battery unit, and supply to section busbar load contemporary. They are

complete independence; the standby charger may standstill and also can

run with no-load. the operation order( take section busbar as an

example): Close 3ZK, 2ZK, 1ZK first, after the device is stabilization, and then

shut 12ZK, the load switch finally and each.

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5. ( Load Distribution When Operate Normal ly)

1.16 (Main Workshop DC System)

5.1.1 (DC load of section busbar)

load name

RATEDCURRENT

OF THECABLE

TYPE OF THE GMBBREAKER

TYPE OFCABLE(CORE×SECTION) (MM)

NO. OF THECABLE

NO.1 UPSPOWER

350 GMB400 2*185 1BUA01 4001

DCLUBRICATIONPUMP

OF N0.1 GEN

125 GMB225 2*25 1BUA01 4002

SPARE 10 GMB32 2*10 1BUA01 4003SPARE 10 GMB32 2*10 1BUA01

4004SPARE 10 GMB32 2*10 1BUA01

4005

NO.1GEN.EXCITATION

SYSTEM

10 GMB32 2*10 1BUA024006

NO.1GENERATOR-

TRANSFORME

R BANK

16 GMB32 2*10 1BUA024007

NO.2GENERATOR-

TRANSFORME

R BANK

16 GMB32 2*10 1BUA024008

NO.3GENERATOR-

TRANSFORME

R BANK

16 GMB32 2*10 1BUA024009

NO.1 GCB

CABINET

16 GMB32 2*10 1BUA02

4010400V PC

SECTION 1A IN16 GMB32 2*10 1BUA02

4011

CN-OR-HT1801 Rev.0 26/43




MAIN POWER

BUILDING400V PC

SECTION 1B IN

MAIN POWERBUILDING

16 GMB32 2*10 1BUA024012

400V PCSECTION A FOR

E.S.P.

16 GMB32 2*10 1BUA024013

400V PCSECTION BFOR

E.S.P.

16 GMB32 2*10 1BUA024014

NO.1 UNIT DCSPOWER

SUPPLY

CABINET

16 GMB32 2*10 1BUA024015

NO.1 TTURBINEETS

CABINET

5 GMB32 2*10 1BUA024016

NO.1 TTURBINEDEH

CABINET

5 GMB32 2*10 1BUA024017

NO.1 REMOTECONTROL

DEVICE

16 GMB32 2*10 1BUA024018

NO.1 REMOTECONTROL

DEVICE

16 GMB32 2*10 1BUA024019

NO.2 REMOTECONTROL

DEVICE

16 GMB32 2*10 1BUA024020

NO.3 REMOTECONTROL

DEVICE

16 GMB32 2*10 1BUA024021

400V PCSECTION A

FOR COALHANDING

16 GMB32 2*10 1BUA024022

CN-OR-HT1801 Rev.0 27/43




400V PCSECTION B

FOR COAL

HANDING

16 GMB32 2*10 1BUA024023

AUXILIARYRELAY PANEL

POWER FOR

NO.1 GET.

20 GMB32 2*10 1BUA024024

SPARE 16 GMB32 2*10 1BUA024025

SPARE 10 GMB32 2*10 1BUA024026

SPARE 10 GMB32 2*10 1BUA02

4027SPARE 16 GMB32 2*10 1BUA02

4028SPARE 10 GMB32 2*10 1BUA02

4029SPARE 80 GMB100 2*10 1BUA01

4030


RATEDCURRENT

OF THECABLE

TYPE OF THE GMBBREAKER

TYPE OFCABLE(CORE SECTION) (MM)

NO. OF THECABLE

NO.2 UPSPOWER

350 GMB400 2*185 2BUA01 4001

DCLUBRICATION

PUMP

OF N0.2 GEN

125 GMB225 2*25 2BUA01 4002

SPARE 10 GMB32 2*10 2BUA01 4003SPARE 10 GMB32 2*10 2BUA01

4004SPARE 10 GMB32 2*10 2BUA01

4005NO.2

GEN.EXCITATION

SYSTEM

10 GMB32 2*10 2BUA024006

NO.4GENERATOR-

16 GMB32 2*10 2BUA024007

CN-OR-HT1801 Rev.0 28/43




TRANSFORME

R BANK NO.5

GENERATOR-

TRANSFORMER BANK

16 GMB32 2*10 2BUA024008

SPARE 16 GMB32 2*10 2BUA024009

NO.2 GCBCABINET

16 GMB32 2*10 2BUA024010

400V PCSECTION 2A IN

MAIN POWER

BUILDING

16 GMB32 2*10 2BUA024011

400V PCSECTION 2B IN

MAIN POWER

BUILDING

16 GMB32 2*10 2BUA024012

400V PCSECTION A FOR

AIR

COMPRESSOR.

16 GMB32 2*10 2BUA024013

400V PCSECTION BFOR

AIR

COM

PRE

SSO

R.

16 GMB32 2*10 2BUA024014

NO.2 UNIT DCSPOWER

SUPPLY

CABINET

16 GMB32 2*10 2BUA024015

NO.2 TTURBINEETS

CABINET

5 GMB32 2*10 2BUA024016

NO.2 TTURBINEDEH

5 GMB32 2*10 2BUA024017

CN-OR-HT1801 Rev.0 29/43




CABINETNO.5 REMOTE

CONTROL

DEVICE

16 GMB32 2*10 2BUA024018

NO.6 REMOTECONTROL

DEVICE

16 GMB32 2*10 2BUA024019

NO.7 REMOTECONTROL

DEVICE

16 GMB32 2*10 2BUA024020

NO.8 REMOTECONTROL

DEVICE

16 GMB32 2*10 2BUA024021

400V PCSECTION

FOR

EMERGENCY

16 GMB32 2*10 2BUA024022

400V PCSECTION

FOR

EMERGENCY

16 GMB32 2*10 2BUA024023

AUXILIARYRELAY PANEL

POWER FOR

NO.2 GET.

20 GMB32 2*10 2BUA024024

6.3KV SECTION 10 GMB32 2*10 2BUA024025

6.3KV SECTION 10 GMB32 2*10 2BUA024026

6.3KV SECTIONC

10 GMB32 2*10 2BUA024027

SPARE 16 GMB32 2*10 2BUA024028

SPARE 10 GMB32 2*10 2BUA024029

SPARE 80 GMB100 2*10 2BUA014030

1.17 (DC System Of Grid Control Build )

5.1.3 (DC Load Of Section Busbar)

RATED TYPE OF TYPE OF NO. OF THE

CN-OR-HT1801 Rev.0 30/43






SPARE 16 GMB32 2*10 YBUA024017









laod

name

RATEDCURRENT OF THE

CABLE

TYPE OF THE GMB BREAKER TYPE OFCABLE(CORE SECTION) (MM)

NO.OF

THECABL

ENO.5 110KVDISTRIBUTION DEVICE

20 GMB32 2*10 YBUA03

4001NO.6 110KVDISTRIBUTION DEVICE

20 GMB32 2*10 YBUA03

4002NO.7 110KVDISTRIBUTION DEVICE

20 GMB32 2*10 YBUA03

4003SPARE 20 GMB32 2*10 YBUA

034004

NO.3 NETCONTROL

20 GMB32 2*10 YBUA04

4005NO.4 NETCONTROL

20 GMB32 2*10 YBUA04

4006FAULT

OSCIILOSCOPE PANEL

16 GMB32 2*10 YBUA

044007NO.2 LINE 16 GMB32 2*10 YBUA

CN-OR-HT1801 Rev.0 32/43




PROTECTION PANEL

044008

NO.3REMOTE

CONTROLDEVICE

16 GMB32 2*10 YBUA04

4009

NO.4REMOTE

CONTROLDEVICE

16 GMB32 2*10 YBUA04

4010


4012NO.2

CENERATOR TRANSFOR

MER

16 GMB32 2*10 YBUA

044013

NO.2HV.AUXILIA

RY TRANSFOR

MER

16 GMB32 2*10 YBUA04

4014

SPARE 16 GMB32 2*10 YBUA


044016



044018



044020



04

CN-OR-HT1801 Rev.0 33/43





044023



044012

NO.2CENERATOR TRANSFOR

MER

16 GMB32 2*10 YBUA04

4013

6. (Operation Regulation And Maintenance)

1.18 (Operation Prescription)

6.1.1 (Any section DC busbar

can’t adopt change power by t instant de-energizing.)

6.1.2(Any control signal and motive load, when need parallel

loop operation, must be notice that voltage of the two section DC busbar

should be same.)

6.1.3 .

(Any control signal and motive load mustn’t outage wantonly, if the

trunk line fault, can adopt subsection outage manner.)

1.19 ( Operation And Maintenance)

6.1.4 , , ,

. , .(Do the running record

well, scout the component of device which is abnormal heat or not, and

turn colors or not, keep the ambient of device clean. A whole set of

device is overhauled regularly, once every years at least. )

6.1.5 230V 225-235V

(DC section busbar voltage hold 230V normally , allowed variety range between 225-235V)

CN-OR-HT1801 Rev.0 34/43




6.1.6

(The floating charge voltage of storage battery should be

between 0 4—0 6A, in order to ensure storage battery keep

being full of electric states usually, must be monitor floating charge

current at any time, keep busbar voltage in regulation range.)

6.1.7 -40 —50 , 15-25 .(The

temperature of storage battery room should be keep between -40 —

50 , the best environment temperature is 15-25 .)

6.1.8 (insulation resistance allowed value.)

1) 0.2MΩ 0.5MΩ.(storagebattery insulation resistance doesn’t under 0.2MΩ, the insulationresistance of DC system doesn’t under0.5MΩ)

2) 50MΩ (The insulation resistance of DCbusbar doesn’t under0.5MΩ.)

3) : (Test insulation resistance ofcharge device.)

4) ( 10000Ω)1MΩ (Using

resi stance inside high universa l meter measur ing rec ti fi ertransformer the primary secondary voltage to ground, and theinsulation resistance between primary and secondary, the valuedoesn’t less than 1MΩ mustn’t use megger measuring secondaryphase to phase insulation and positive negative insulation.)

6.1.9 (storage battery group and charge silicon

device check and maintenance)

1) 2(When floating charge the storage battery, it should check and

adjust floating charge current every 2 hours. Check insulation monitor devicework condition.)

2) (all control signal load powersource indicator lamp lighting.)

3) , .(Check storageand busbar voltage is correctly or not, charging device current indication is rightor not.)

4) (The main item of

routine check of storage battery group and charging device is as follow.)a) ( The ventilation illumination and

CN-OR-HT1801 Rev.0 35/43






(When DC system earth connection occurs, inspectthe place which leak gas or water. If it is rain, check outdoor substation first,and lookup main control room second, then search fault of storage battery last.)

2) (Inform relevant

speciality operator before put DC system to earth.)3) (While selection adoptsinstant power off method, forbid using test light.)

4) (Test load whichhas reclosing function, test it fast to avoid breaker reclosing at this time.)

5) (If cut controlDC, should lookup load one by one and do fault precautions well at same time.)

6) ( )(The sequence of selection is that load first (control, signal, and

motive load) charger second, storage battery and DC busbar last.)

7) (Find out DC system groundwithin half hour and eliminate it within two hours.)

7.1.2 (deal with after selection)

1)(If earth connection occur on minor load, inform relevant operator put it out

of service then inform overhaul crew.)2)

(If charger or storage battery connects to earth, then unite all busbarexit charger or batte ry.)

3) (If busbaror branch main line connects earth can’t changeover system, inform overhaulcrew to deal with it as soon as possible.)

4) (

) (If protection circuit of mainequipment occurs earth connection (for example: control and protection circuitif main electric equipment, thermal turbine protection circuit), put it out of service after dispatch or shift engineer agrees.)

1.21 (Battery Fault Disposal)

7.1.3 (Insulation of storage battery low)

7.1.4 (Phenomena: there is DC

earth connection signal or there is a indicator of the voltage meter whichuse to monitor voltage between positive pole (negative pole) and earth.)

CN-OR-HT1801 Rev.0 37/43




7.1.5 (Reason)

1) (Environment humidity is high that results insustain rack wetness.)

2) (Battery channel and channel mat isduty, or polluted by acid liquid.)

3) (Storage battery room is improper ventilation.)

(Disposal)

1) (Wash outwall of battery channe l by water.)

2) (Clear it with sodium bicarbonate liquid oralcohol.)

3) (Improve ventilation condition.)(If it is no use after do all above,

put this storage battery unit out of service.)

7.1.6 (Storage battery is on fire)

1) (Break outletbreaker of fault storage battery, close DC 1,2 secontion busbar subsectionswitch.)

2)

(Put out a f ire with sands or carbontetrachloride.)

3) (Start fan after fire is out.)

1.22 PZW32-200(1300)Ah/220V ( control box of PZW32-

200(1300)Ah/220V device is fault)

7.1.7 : F8 F9 F10 ,

. , .(Loss of AC

supply voltage: check that AC input is loss, lack phase andF8 F9 F10 blow or not, relevant connection is right or not, if

fault still exist, change pulse board o r charging control board.)

7.1.8 : . ,

.(Charger fault: check AC power phase sequence

and synchronizing power, if fault still exist, change pulse board, charging

control board, transducer and so on.)

7.1.9 : ,12V , TA1 m (1300Ah 3.6V,200Ah 3.3V,

CN-OR-HT1801 Rev.0 38/43




10V ), , .(Charger

overcurrent: check that there is short circuit of output circuit, 12V work

power is right or not, the m value of transducer TA1 is too great (1300Ah

is 3.6V, 200Ah is 3.3V, if it over 10V transducer is damaged), if fault is

unable to eliminate, change charging control board.)

7.1.10 : F6 F7 , .

, .(Battery undervoltage: check F6, F7

is fusing or not, relevant connection is right or not. If fault is unable to

eliminate, change transducer board.)

7.1.11 : F6 F7 , .

, .(Busbar undervoltage: check F6, F7 is

fusing or not, relevant connection is right or not. If fault is unable to

eliminate, change transducer board.)

7.1.12 : F6 F7 , .

, .(Busbar overvoltage: check F6, F7 is

fusing or not, relevant connection is right or not. If fault is unable to

eliminate, change busbar monitor board or transducer board.)

7.1.13 : F6 F7 F11 ,

, . , .

(There is no indicator of control box or no output of charger: check F6,

F7, F11 is fusing or not, power source and relevant connection is right or

not; If fault is unable to eliminate, change transducer board.)

7.1.14 : , TA2 m

(1300Ah 1.2V,200Ah 2V, ),

. , .(Charger can’t

stabilize current: check that power source is right or not, the m value of

transducer TA2 is right or not (1300Ah is 3.6V, 200Ah is 3.3V, if it over

10V transducer is damaged), relevant connection is right or not, if fault is

unable to eliminate, change charging control board.)

7.1.15 : ,F3 F4 ,

. , .(Charger can’t

stabilize voltage: check that power source is right or not, F3,F4 is fusing

or not, if fault is unable to eliminate, change charging control board ortransducer board.)

CN-OR-HT1801 Rev.0 39/43




1.23 (Intelligence monitor fault)

, (24V) ,

, , .

, :(when intelligence monitor alarm,

check its power supply (24V) is normal or not first, and inspect relevant

charger, if charger has the same alarm, eliminate charger fault first. If

charger doesn’t alarm, eliminate fault as follow method:)

7.1.16 1 : 1SFV ,

.( 1 charger output overvoltage or undervoltage: Check

that 1SFV work normal, relevant connection and setting value is right or

not.)

7.1.17 2 : 4SFV ,

.( 2 charger output overvoltage or undervoltage: Check


not.)

7.1.18 : 3SFV ,

.(Standby charger output overvoltage or undervoltage: Check


not.)

7.1.19 1 : 2SFV ,

.( 1 battery group output overvoltage or undervoltage:

Check that 2SFV work normal, relevant connection and setting value is

right or not.)

7.1.20 2 : 5SFV ,

.( 2 battery group output overvoltage or undervoltage:

Check that 5SFV work normal, relevant connection and setting value is

right or not.)

7.1.21 1 : 1SFV ,

.( 1 charger output overcurrent: Check that 1SFV work

normal, relevant connection and setting value is right or not.)

7.1.22 2 : 4SFV ,

.( 2 charger output overcurrent: Check that 4SFV work

normal, relevant connection and setting value is right or not.)

CN-OR-HT1801 Rev.0 40/43




7.1.23 : 3SFV ,

.(Standby charger output overcurrent: Check that 3SFV work normal,

relevant connection and setting value is right or not.)

7.1.24 1 : 1FU1 2FU2 ,

.( 1 battery thermal element blow: Check 1FU1, 2FU2 is

fusing or not, relevant connection is right or not.)

7.1.25 2 : 1FU1 2FU2 ,

.( 2 battery thermal element blow: Check 1FU1, 2FU2 is

fusing or not, relevant connection is right or not.)

1.24 :( Microprocessor insulation online monitor

device fault)

7.1.26 : 1F12 1F13 ,

.( section busbar overvoltage or undervoltage: Check 1F12,

1F13 is fusing or not, relevant connection and setting value is right or

not.)

7.1.27 : 1F12 1F13 ,

.( section busbar overvoltage or undervoltage: Check 1F12,

1F13 is fusing or not, relevant connection and setting value is right ornot.)

7.1.28

: .( section

busbar insulation alarm: check relevant connection is right and setting or

not according to device indication.)

7.1.29

: .( sectionbusbar insulation alarm: check relevant connection is right and setting or

not according to device indication.)

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