manual for pms

8/11/2019 Manual for Pms

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MANUAL FOR PMS


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Zhejiang Xinya Electric Development Co.,Ltd

Tableofcontents

1. SystemDescription....................................................................................................................................4

2. Hardwarespecification..............................................................................................................................6

2.1 PLC(SIMATICS7200Programmablecontroller)...............................................................................6

2.1.1 TechnicalSpecifications..............................................................................................................6

2.1.2CPU

specifications

............................................................................................................................

7

2.1.2 Digitalexpansionmodulesspecifications.................................................................................12

2.1.3 Analogexpansionmodulesspecifications................................................................................18

2.2 Synchronizer.....................................................................................................................................20

2.2.1 Description............................................................................................................................20

2.2.2Technicalspecifications:.................................................................................................................21

2.2.3Selfmonitoring:..............................................................................................................................21

2.2.4Settingandindication.....................................................................................................................22

2.2.5Connectiondiagram.......................................................................................................................22

2.3

Transducers (YOKOGAWA)...........................................................................................................

24

3. PMS functions........................................................................................................................................29

3.1Dieselgeneratormanuallycontrol........................................................................................................29

3.1.1Dieselgeneratormanuallystart&ACBclosuretodeadbus.........................................................29

3.1.2Dieselgeneratormanuallystart&synchro....................................................................................29

3.1.3Dieselgenertormanuallyloadshift&ACBopen,Enginestop......................................................30

3.2Dieselgeneratorsemiautocontrol.......................................................................................................30

3.2.1Dieselautomaticallystart&ACBclosuretodeadbus...................................................................30


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3.4.3ShaftgeneratorautomaticallyloadshifttoD/G&deexcite. ....................................................32

3.5.After

subarea

power

supply,

manually

synchro

by

bus

tie

breaker

....................................................

33

3.5.1Aftersubareapowersupplydividually,manuallysynchrobySDBT1bustiebreaker...................33

3.5.2Aftersubareapowersupply,manuallysynchrobySDBT2bustiebreaker...................................33

3.5.3Aftersubareapowersupply,manuallysynchrobyDDBTbustiebreaker.....................................33

3.6.Aftersubareapowersupply,semiautosynchrobybustiebreaker..................................................33

3.6.1Aftersubareapowersupply,semiautosynchrobySDBT1bustiebreaker..................................33

3.6.2Aftersubareapowersupply,semiautosynchrobySDBT2bustiebreaker..................................33

3.6.3Aftersubareapowersupply,semiautosynchrobyDDBTbustiebreaker...................................33

3.7Generatorautomaticallycontrol...........................................................................................................34

3.7.1

One

shaft

generator

power

supply,

Generator

ACB

abnormal

trip

and

blackout

.........................

34

3.7.2Onedieselgeneratorsupplypower,GeneratorACBabnormaltripandblackout........................34

3.7.3Oneshaftgeneratorsupplypower,busbarabnormal...................................................................35

3.7.4Onedieselgeneratorsupplypower,busbarabnormal..................................................................35

3.7.5Dieselgeneratorautomaticallyloadshift&ACBopen,Enginestopduetolightload..................36

3.7.6Gen.

Eng.

automatically

start

&

synchro

due

to

heavy

load

..........................................................

36

3.7.7Pretripnonessentialconsumer.....................................................................................................36

3.7.8Heavyconsumerstartrequest.......................................................................................................36

3.7.9 Dynamic positioning DP2..............................................................................................................38

4.PMSwiringdiagrams...................................................................................................................................38


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1. System Description

This power management system (PMS) is performed by a computerized generator

automatic control functionsPLC CONTROL SYSTEM: generator voltage monitoring,

bus voltage and frequency monitoring, generator synchronizing (Paralleling), load sharing

control and load shift control.

The PMS has the following features:

The PMS is an extremely easy to us and highly reliable total system.

ThePMSis composed of the one touch screen and PLC, Synchronizer, transducer. And

each device are installed in switchboard under common section.ThePMSis responsible for overall management of the generating plant.

It has an automatic synchronizing/automatic load sharing function, automatic generator

start and changeover commands, and power management functions.

It is used to automate plants with unattended machinery rooms and performs efficient

power management for super-rationalization plants.

System design based on two principles; manual control should override automatic

controlandcontrol system should be isolated or separated from safety and protective

systems, so that the safety of the ship's electric power system and the ship herself will

be secured even if the worst happens to the control system.

The PMScontrols generating plant centralized so that extremely high level of power

supply reliability is achieved.


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Hardware configuration: SIMATIC S7200 ,Synchronizer,transducer,LCD(SIMATIC HMI Smart 700 IE)

PMS1:

CPU

MODULE

6ES7 226

I/O

MODULE

6ES7223

I/O

MODULE

6ES7223

AI

MODULE

6ES7231

AI

MODULE

6ES7231

SIMATIC S7200 series:

CPU: 6ES7226 24VDC 24 inputs/16 outputs Qty:1

I/O: 6ES7223 24VDC 32 inputs/32 outputs Qty: 2

AI: 6ES7231 4 inputs Qty: 2

Transducers

Power transducer: Qty: 2

Voltage transducer: Qty:2

Frequency transducer: Qty:2

PMS2:

CPU

MODULE

6ES7 226

I/O

MODULE

6ES7223

I/O

MODULE

6ES7223

AI

MODULE

6ES7231

AI

MODULE

6ES7231

SIMATIC S7200 series:

CPU: 6ES7226 24VDC 24 inputs/16 outputs Qty:1

I/O: 6ES7223 24VDC 32 inputs/32 outputs Qty: 2

AI: 6ES7231 4 inputs Qty: 2

Transducers

Power transducer: Qty: 3

Voltage transducer: Qty:3

Frequency transducer: Qty:2

Paralleling and transducer

Synchronizer: Qty:1


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2.1.2 CPU specifications


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2.1.2 Digital expansion modules specifications


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2.1.3 Analog expansion modules specifications


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The synchroniser measures the busbar and generator voltages and frequencies and

compares these, plus compares their phase angles. It controls the generator frequency,

till it matches the busbar frequency. In order to determine phase accordance between the

generator and the busbar, the synchroniser calculates a phase angle advance based on

the circuit breaker closing time and the slip frequency. When the phase difference is

within this olerance the synchroniser transmits a closing signal for the generator

circuit breaker allowing time for this to close.

2.2.2 Technical specifications:

Supply volt. (Un): 400VAC/450VAC20%

(MAX. 3.5VA)

Meas. voltage: 400VAC/450VAC

(


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2.2.4 Setting and indication

MARKED SETTING OF RANGE

TN Control pulse length 25~500ms

XP Proportional band 0.25~2.5HZ

FRE Slip frequency 0.1~0.5HZ

VOLTAGE Acceptable voltage difference 2~12%of UBB

BREAKER Breaker closure time 20~200ms

MARKED LEDs Light

UG Generator voltageGreen,

when value is within the

acceptable range

Switched off, if outside this range

UBB Busbar voltage

f Frequency difference

U Voltage difference

SG Increase speed (frequency)

Yellow,

when relay is activatedSG Decrease speed (frequency)

SYNC Synchronising

2.2.5 Connection diagram

1 3 8 9 10

24 26 29 30 33 34 35 36 39

XY09-SYN

X1 X2

L1 L2BB

L1 L2

RELAY TO

CIRCUIT BREAKER

AUX SUPPLY

L1

L2

L3

~ ~

SYNC

BB

L1

L2

L3

G G

GENERATOR

U INH f

40 41

17 18

38

SG

SPEED

+Sta -


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Terminal no. Description/action

13

X1/X2Input for supply voltage

8,9,10 Relay contact for circuit breaker. On time 400 ms

17,18

Sta

Status output, activated (closed) when the supply voltage is

connected and the unit is working correctly

24, 26

BB/L1 BB/L2Input for busbar voltage measurement.This input becomes

active when the voltage level exceeds 80% of nominal voltage

29, 31

G/L1 G/L2

Input for generator voltage measurement. When the voltagelevel on this input exceeds 60% of nominal voltage, the

XY09-SYN is activated and the regulator outputs (SG) become

active. Note that with an auxiliary contact on the generator

circuit breaker this function can be used for resetting of the

XY09-SYN after synchronisation and hereby deactivation of

the SG outputs. This function allows the supply voltage to be

connected at any time

34,("INH")

May be connected to a potential-free N/O contact. When thiscontact is activated, the XY09-SYN will not transmit a closing

signal (terminals 9 and 10), but the SYNC LED will be lit

when the sync. pulse is transmitted. This function can be

used for testing purposes.

35, ("") Common earth terminal for the above input/output

38, 39 Relay

contacts "SG" Relay contact for increase of the speed

40, 41 Relay

contacts "SG"Relay contact for decrease of the speed

NOTE:

Relay contacts

Relays (SG) should always be connected via external aux.

relays when a DC pilot motor is applied. A transient

suppressor should always beconnected across the relay coil

of the external relays


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2.3Transducers (YOKOGAWA)

2.3.1 Technical specifications


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2.4LCD (SIMATIC HMI Smart 700 IE)


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3. PMS functions

3.1 Diesel generator manually control

3.1.1 Diesel generator manually start & ACB closure to dead busThe following describes, as an example, steps to place DG1 onto a dead bus.

Turn the DG1s mode select switch on the No.1 diesel generator panel to MANU position,

check the preparation for starting the generator engine has been made satisfactory(the

READY TO START indicator lamp is turned on).

Press the ENGINE START pushbutton on the No.1 diesel generator to start gensets, as the

diesel engine accelerates to synchronous speed, the generator voltage will build up and the

RUNNING indicator lamp on the No.1 diesel generator panel will be turned on.

Check if the required generator voltage and frequency is reached with the voltmeter and

frequency meter for No.1 diesel generator panel, operating theVOLTMETER SELECT

switch on the No.1 diesel generator panel is set to each phasetophase position. If the

generator voltage is other than specified, adjust it with the manual voltage regulator controls.

If the frequency is higher than the rated value, turn the GOVERNORcontrol switch to

LOWER position to decrease the generator frequency and adjust it to the rated value. Ifthe frequency is lower than the rated value, adjust it to the rated value by setting the

GOVERNORcontrol switch to RAISE position.

Check the bus voltage and frequency by the double voltage and frequency meters on the

synchro panel, and the meters indicate zero. On confirmation of this, presss the ACB

CONTROL pushbutton on the No.1 diesel generator panel or synchro panel to CLOSE to

place No.1 diesel generator onto a dead bus C.

3.1.2 Diesel generator manually start & synchro

The following describes, as an example, steps to place No.2 diesel generator onto a live bus

served by No.1 diesel generator.

Turn the DG2s mode select switch on the No.1 diesel generator panel to MANU position,


READY TO START indicator lamp is turned on), press the ENGINE START pushbutton onthe No.2 diesel generator to start gensets, as the diesel engine accelerates to synchronous

speed, the generator voltage will build up and the RUNNING indicator lamp on the No.2

diesel generator panel will be turned on.

Compare the incoming generator voltage with the bus voltage by charging the switch and


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generator ACB to occur at the exact instant of synchronism. Press the ACB CLOSE

pushbutton to closeNo.2 diesel generator a little prior to the synchronism.

When two generators are on line, you must operate theirGOVERNORcontrol switchessimultaneously to RAISE (frequency up) or to LOWER (frequency down),

operation of only one switch transfers load from one generator to the other rather than

changing the frequency.

3.1.3 Diesel genertor manually load shift & ACB open, Engine stop

a. The following describes, as an example, the case where No.1 diesel generator is removed

from the bus when DG1 and DG2 are on line. Adjust the DG1s GOVERNOR control switch to

LOWER and DG2s to RAISE.

This lightens the kW load on No.1 diesel generator and increases the kW load on No.2 diesel

generator i.e., load on No.1 diesel generator is shifted to No.2 diesel generator.

When the load on No.1 diesel generator is reduced to about 5% of its rated kW output(check

the power meter), press the ACB OPEN pushbutton to remove No.1 diesel generator from

the bus.Then, adjust the bus frequency to the rated value as necessary by operating DG2s

GOVERNORcontrol switch toLOWERor toRAISE.

Press the ENGINE STOP pushbutton to stop DG1 manually.

b. The following describes, as an example, the case where No.1 diesel generator is removed

from the bus when DG1 and SG1 are on line in short time. Adjust the DG1s GOVERNOR

control switch to LOWER.

When the load on No.1 diesel generator is reduced to about 5% of its rated kW output(check

the power meter), press the ACB OPEN pushbutton to remove No.1 diesel generator from

the bus.

Press the ENGINE STOP pushbutton to stop DG1 manually.

3.2 Diesel generator semiauto control

3.2.1 Diesel automatically start & ACB closure to dead busThe following describes, as an example, steps to place DG1 onto a dead bus.

Turn the DG1s mode select switch on the No.1 diesel generator panel to AUTO position,


READY TO START indicator lamp is turned on).


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While the No.1 diesel generator supply the power to the main bus, turn the MODE

SELECT switch to AUTO position on the NO.2 diesel generator panel, confirm No.2

diesel generator is remote and ready, Press the AUTO START/SYNCHRO pushbuttonon the No.2 diesel generator panel to start the diesel engine, at the same time, the DG2

AUTO START/SYN indicator lamp is turned on , after the No.2 diesel generator running.

While voltage establish to rated value, and busbar is alive, PMS gives automatic synchro

command, while meets synchro condition, synchronizer gives automatic close command,

then generator supplies power to busbar in parallel, load sharing automatically, at the

same time, the DG2 AUTO START/SYN indicator lamp is turned off.. If start fail/voltage

not established/ACB nonclose/auto synchro fail, PMS gives alarm.

3.2.3 Diesel generator automatically load shift & ACB open, Engine stop

The following describes, as an example, the case where No.1 diesel generator is removed

when DG1 and DG2 are in parallel operation.

The MODE SELECTswitch on the each diesel generator panel is set to AUTO

position .Press the LOAD SHIFT pushbutton on the No.1 diesel generator panel, at the same

time, the LOAD SHIFT indicator lamp is turned on, PMS gives automatic load transfer

command, adjust the No.1 diesel generator speed automatically, while the No.1 diesel

generator power is less than 5% rated power, PMS gives automatic open command, the

No.1 diesel generator disconnects, at the same time, the LOAD SHIFT indicator lamp is

turned off. After 3 minutes (adjustable), No.1 diesel generator stops automatically, at the

same time, the LOAD SHIFT indicator lamp is turned on , then the engine stopped, at

the same time the LOAD SHIFT indicator lamp is turned off.

Note: if the load on the generator to remain on line is expected to reach 90% or more if its

rated kW output as a result of automatic laod shift control operation the pushbutton

LOAD SHIFT has no effect.

3.3 Shaft generator manually control3.3.1 Shaft generator manually excite & ACB closure to dead bus

The following describes, as an example, steps to place SG1 onto a dead bus.

Turn the MODE SELECT switch on the No.1 shaft generator panel to MANU position,

confirm the main engine is constant speed, namely in shaft generator mode. Turn the select


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predefine gensets(SG1), adjust DGs speed and voltage manually, look over meter and

synchronoscope, while meets synchro condition, press the ACB CLOSE pushbutton on the

No.1 shaft generator panel or Synchro panel for SG2 , then generator supplies power tobusbar in parallel. If need subarea power supply, open the relevant bustie breaker.

3.3.3 Shaft generator manually load shift & deexcite

The following describes, as an example, the case where No.1 shaft generator is removed from

the bus when SG1 and DG are on line in short time. Adjust the DGs GOVERNOR control

switch to RAISE.

Turn the MODE SELECT switch on the No.1 shaft generator panel to MANU position, adjust

the D/Gs governor switch to RAISE, check DG1s power meter, while the DG1s power is less

than 5% rated power, press ACB OPEN pushbutton on the No.1 shaft generator panel or

synchro panel, the ACB disconnected, then turn the select switch of EXCITATION to OFF

position, the SG1 deexcited.

3.4 Shaft generator semiauto control

3.4.1 Shaft generator automatically excite & ACB closure to dead busThe following describes, as an example, steps to place SG1 onto a dead bus.

Turn the MODE SELECT switch on the No.1 shaft generator panel to AUTO position,

confirm the main engine is constant speed, namely in shaft generator mode, press AUTO

EXCITE & ACB CLOSE illuminated pushbutton on the No.1 shaft generator panel to start SG,

after generator is running, while voltage establish to rated value, PMS automatically closes

generator breaker, then generator supplies power to bus A. If start fail/voltage not .

3.4.2 Shaft generator automatically excite & synchro momently

The following describes, as an example, steps to place No.1 shaft generator onto a live bus

served by diesel generator.

Turn the MODE SELECT switch on the No.1 shaft generator panel to AUTO position,

confirm the main engine is constant speed, namely in shaft generator mode, press AUTO

EXCITE & ACB CLOSE illuminated pushbutton on the No.1 shaft generator panel to start SG,after generator is running, while voltage establish to rated value, if SG and DG run in parallel ,

PMS adjust speed for DG and output automatic synchro command, while meets synchro

condition, synchronizer output automatic close command, then generator supplies power to

busbar in parallel, then manually control: a. subarea power supply ,b. load shift and stop DG. If

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3.5 . After subarea power supply, manually synchro by bus tie breaker

3.5.1 After subarea power supply dividually, manually synchro by SDBT1 bus tie breaker

When bus C and bus A subarea power supply, Turnthe synchro select switch on synhcro panelto SDBT1, adjust the GOVERNOR switch for DG manually, check voltage , frequency meter

and synchronoscope, let SG s speed quicker. While meets synchro condition, press ACB

CLOSE pushbutton on synchro panel for SDBT1, then generator supplies power to busbar in

parallel, then load shift manually.

3.5.2 After subarea power supply, manually synchro by SDBT2 bus tie breaker

When bus D and bus B subarea power supply, Turnthe synchro select switch on synhcro panel

to SDBT2, adjust the GOVERNOR switch for DG manually, check voltage , frequency meter

and synchronoscope, let SG s speed quicker. While meets synchro condition, press ACB

CLOSE pushbutton on synchro panel for SDBT2 , then generator supplies power to busbar in

parallel, then load shift manually.

3.5.3 After subarea power supply, manually synchro by DDBT bus tie breakerWhen bus BD and bus AC supply power dividually. Turnthe SYN SELECT switch to DDBT,

adjust GOVERNOR switch for DG manually, check voltage, frequency meter and

synchronoscope. While meets synchro condition, press ACB CLOSE pushbutton on synchro

panel for DDBT, then generator supplies power to busbar in parallel, then load shift manually.

3.6 . After subarea power supply, semiauto synchro by bus tie breaker

3.6.1 After subarea power supply, semiauto synchro by SDBT1 bus tie breaker

When bus C and bus A supply power dividually. Turnthe MODE SELECT switch on each

generator panel to AUTO position, press AUTO SYNCHRO illuminated pushbutton on

synchro panel for SDBT1, PMS output automatic synchro command and then SDBT1 bus tie

breaker synchro close, then generators supplies power to busbar in parallel, then load shift

manually.

3.6.2 After subarea power supply, semiauto synchro by SDBT2 bus tie breaker

When bus D and bus B supply power dividually. Turnthe MODE SELECT switch to AUTO

position, press AUTO SYNCHRO illuminated pushbutton on synchro panel for SDBT2, PMS

output automatic synchro command and then SDBT2 bus tie breaker synchro close, then

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3.7 Generator automatically control

3.7.1 One shaft generator power supply, Generator ACB abnormal trip and blackout (The

MODE SELECT switch on each generator panel is set to AUTO position)A: Standby SG automatically excite and ACB closeure on the dead bus

a. While the No.1 shaft generator supply the power to busbar, the SG1 ACB abnormal trip

and blackout, if SG2 in shaft generator mode, the SG2 auto excite, while voltage establish to

rated value, PMS output automatic close command, then the SG2 ACB close and supplies

power to bus B and SDBT2 bus tie breaker automatic close; If voltage not established/ACB

non close, then PMS gives alarm. If busbar continued to short circuit, power supply is

interrupt.

b. While the No.2 shaft generator supply the power to busbar, the SG2 ACB abnormal trip

and blackout, if SG1 in shaft generator mode, the SG1 auto excite, while voltage establish to

rated value, PMS output automatic close command, then the SG1 ACB close and supplies

power to bus B and SDBT1 bus tie breaker automatic close; If voltage not established/ACB

non close, then PMS gives alarm. If busbar continued to short circuit, power supply is

interrupt.

B: 1ststandby DG (DG1,DG2 or DG3) automatically start and ACB closure to the dead bus

While One shaft generator supply the power to busbar, SG ACB abnormal trip and blackout, if

the other SG is not in SG mode or excite fail, the 1 ststandby DG automatically start, after 1st

standby DG is running, while voltage establish to rated value, PMS gives automatic close

command, then ACB close and 1ststandby DG supplies power to busbar. If start fail/voltage

not established/ACB non close, then PMS gives alarm. If busbar continued to short circuit,

power supply is interrupt.

C: 2ndstandby DG (DG1,DG2 or DG3) automatically start and ACB closure to the dead bus

SG ACB abnormal trip and blackout, if the other SG is not in SG mode or excite fail, and 1 st

standby DG failure to supply, the 2ndstandby DG automatically dittoes 1ststandby DG.

3.7.2 One diesel generator supply power, Generator ACB abnormal trip and blackout (The

MODE SELECT switch on each generator panel is set to AUTO position)

A: 1stStandby DG automatically start , ACB closure to the dead bus

a. DG ACB trip and blackout, the 1st standby DG automatically start, after 1st standby DG is

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busbar, the relevant bustie breaker automatically close. If voltage not established/ACB non

close, then PMS output alarm. If busbar continued to short circuit, power supply is interrupt.

C: 2ndstandby SG (SG1or DG2) automatically excite , ACB closure to the dead bus

DG ACB trip and blackout, if the other DG are not ready or start fail, and 1 ststandby SG failure

to supply, the 2ndstandby SG automatically dittoes 1ststandby SG.

3.7.3 One shaft generator supply power, busbar abnormal (voltage high or low/frequency

high or low) (The MODE SELECT switch on each generator panel is set to AUTO position)

A: Standby SG automatically excite , ACB closure to the dead bus

a. SG1 abnormal(voltage high or low/frequency high or low), if SG2 in SG mode, SG2

automatically excite, after SG2 is running, while voltage establish to rated value, PMS first

automatic open SG1 ACB, then automatic close SG2 ACB onto dead bus B, SDBT2 bus tie

breaker auto close; If voltage not established/ACB non close, then PMS gives alarm.

b. SG2 abnormal(voltage high or low/frequency high or low), if DG1 in SG mode, SG1

automatically excite, after SG1 is running, while voltage establish to rated value, PMS firstautomatic open SG2 ACB, then automatic close SG1 ACB onto dead bus A, SDBT1 bus tie

breaker auto close; If voltage not established/ACB non close, then PMS gives alarm.

B: 1ststandby DG (DG1,DG2 or DG3) automatically start , ACB closure to the dead bus

SG abnormal(voltage high or low/frequency high or low), if another SG is not in SG mode or

excite fail, the 1ststandby DG automatically start, after 1ststandby DG is running, while voltage

establish to rated value, PMS first automatic open abnormal SG ACB, then automatic close 1st

standbyDG ACB onto dead bus. If start fail/voltage not established/ACB non close, then PMS

output alarm.

C: 2ndstandby DG (DG1,DG2 or DG3) automatically start , ACB closure to the dead bus

SG abnormal(voltage high or low/frequency high or low), if another SG is not in SG mode or

excite fail, and 1st

standby DG failure to supply, the 2nd

standby DG automatically dittoes 1st

standby DG.

3.7.4 One diesel generator supply power, busbar abnormal (voltage high or low/frequency

high or low) (The MODE SELECT switch on each generator panel is set to AUTO position)

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DG abnormal(voltage high or low/frequency high or low), if the other DG are not ready or

start fail, the 1ststandby SG automatically excite, after 1ststandby SG is running, while voltage

establish to rated value, PMS first automatic open abnormal DG ACB, then automatic close 1ststandby SG ACB onto dead bus, the relevant bustie breaker automatically close. If voltage not

established/ACB non close, then PMS gives alarm.

C: 2ndstandby SG (SG1or DG2) automatically excite , ACB closure to the dead bus

DG abnormal(voltage high or low/frequency high or low), if the other DG are not ready or

start fail, and the 1ststandby SG failure to supply, the 2ndstandby SG automatically dittoes 1st

standby SG .

3.7.5 Diesel generator automatically load shift & ACB open, Engine stop due to light load (The

MODE SELECT switch on each generator panel is set to AUTO position)

Two or more diesel generators run in parallel, load power is less than 60%(adjustable) rated

power, the last closure generator automatic load shift, while the generator power is less than

5% rated power, PMS output automatic open command, the last closure generatordisconnects, after 5 minutes(adjustable), Engine stops automatically.

3.7.6 Gen. Eng. automatically start & synchro due to heavy load (The MODE SELECT switch

on each generator panel is set to AUTO position)

Diesel Generator supplies power to busbar, load power is more than 90%(adjustable) rated

power, after 15 sec. (adjustable), the 1ststandby DG automatically start, after 1ststandby DG is

running, while voltage establish to rated value, PMS output automatic synchro command,

while meets synchro condition, synchronizer output automatic close command, then

generators supplies power to busbar in parallel, load sharing automatically. If start

fail/voltage not established/ACB non close/auto synchro fail, then PMS gives alarm. If 1 st

standby generator failure to supply, the 2ndstandby generator automatically dittoes 1st

standby generator.

3.7.7 Pretrip nonessential consumer

Generator over current [100%(adjustable) rated current], after 10 sec. (adjustable),PMS gives

pretrip command to disconnect nonessential consumer.



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then the PMS output permit start signal to bow thruster control box. if SDBT2 bus-tie breaker

open fail or No.2 shaft generator ACB close fail, then PMS output alarm.

c. When No.2 shaft generator supply power to the ship, bow thruster output start request to PMS, ifthe load90% rated power of one diesel generator, the 1st standby and 2nd standby diesel

generator start automatically, after standby diesel generators are running, auto synchro after

voltage being built, then two diesel generators and No.2 shaft generator run in parallel, then the

No.2 shaft generator auto transfer the load to diesel generators, then the load shift finished, the

SDBT2 bus-tie breaker automatically open, then the PMS output permit start signal to bow

thruster control box. If the load


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j g y p ,

synchro after voltage being built, then two diesel generators run in parallel, then the PMS output

permit start signal to retractable stern thruster control box.

b. When one set shaft generator supply power to the ship, stern thruster output start request to PMS,the 1st standby and 2nd standby diesel generator start automatically, after standby diesel

generators are running, auto synchro after voltage being built, then two diesel generators and

shaft generator run in parallel, then the shaft generator auto transfer the load to diesel generators,

then the load shift finished, the SDBT1 or SDBT2 bus-tie breaker automatically open, if the

surplus power is enough (online generators rating power X 85%-load large motor rating

power),then the PMS output permit start signal to stern thruster control box.

3.7.9 Dynamic positioning DP2 (The MODE SELECT switch on each generator panel is set to

AUTO position)

In the mode of dynamic positioning DP2, three diesel generators and two shaft generators (divided

into 4 zones) are in charge of power supply.

a. When No.1 diesel generator supply the power, press DP2on the WHC, then SDBT1, SDBT2

and SSBT bus-tie breaker open automatically. If No.1,No.2 shaft generator were in shaft mode,automatically exciteauto close after voltage has been built; The standby generators starts

automatically, auto synchro after has been built, and diesel generators run in parallel, while

DDBT bus-tie breaker auto open and divided into A/B/C/D four zones to supply power, thruster

breaker auto close, sending the permit start signal to thruster.

b. When No.1 shaft generator supply the power press DP2on WHC, then SDBT2 and SSBT bus-

tie breaker open automatically. If No.2 shaft generator was in shaft mode, automatically excite

auto close after voltage has been built; auto start No.1,No.2 and No.3 diesel generator , auto

synchro after voltage has been built. After the diesel generator and No.1 shaft generator parallel

running , No.1 shaft generator auto load shift and SDBT1 bus-tie breaker auto open. After three

diesel generators run in parallel, DDBT bus-tie breaker auto open and automatically divided into

A/B/C/D four zones to supply power, as thruster breaker auto close, sending the permit start

signal to thruster

c. When No.2 shaft generator supply the power press DP2on WHC, then SDBT1 and SSBT bus-tie breaker open automatically. If No.1 shaft generator was in shaft mode, automatically excite

auto close after voltage has been built; auto start No.1,No.2 and No.3 diesel generator , auto

synchro after has been built. After the diesel generators and No.2 shaft generator parallel running ,

No.2 shaft generator auto load shift and SDBT2 bus-tie breaker auto open. After three diesel


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manual for pms

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