Am. Temp -40~+60�?/DIV>
SELCO T4500 auto synchronizer is designed for automatic synchronization between generator and bus-bar in a minimum of time by controlling the speed via the electric servomotor on the governor.
The T4500 measures the voltage across two phases on either side of the circuit breaker in order to obtain data on voltage, frequency and phase difference for closing the circuit breaker at exact phase accordance.
The synchronization function will become active when the difference between the bus voltage and the generator voltage is within limits. The voltage difference is selectable between 2% to 10%.
When the synchronization function is active, the T4500 will automatically adjust the speed of the generator through the governor in order to match the frequency to the bus-bar.
The T4500 will continuously adjust the generator speed until the frequency difference is within limits. When the voltage and frequency difference are within limits, the closing signal will be activated just before the next phase accordance, anticipating the circuit breaker make time. The T4500 compensates for this make time so that the circuit breaker will close exactly at zero phase.
Operating Temp -20~+70�?/DIV>
Contact rating AC: 480V, 2A, 250VA; DC: 110V, 2A, 100W
Auto synchronization system is adopted between generators and network and among generators. Manual synchronization system is supplied for standby.
9) Load sharing
All generators can work in parallel; load can be equally shared among all generators automatically. Woodward programmable and configurable speed governor controller 2301D are adopted to control the engine, which can share or operate Gen-set in base load mode or isochronous mode.
Main functions on the control and operation panel:
- Starting engine
- Speedup
- Speed-down
- Generator switch ON/OFF
- Voltage adjustment
- Reactive power share
- Synchronization
- Voltage measuring changeover
- Lube oil pressure
- Water pressure
- Voltage
- Current
- Frequency
- Power
- Excitation current
- Speed
- Alarm
Local Control Desk
Local Control Desk is provided for monitoring pressure and thermal parameters of the running engine. Also starting, stopping and speed control of engine is possible in local control operation mode. It is located near the engine.
Major Components in Local Control Desk
1) Pressure gauges, switches
Lube oil filter inlet pressure
Lube oil filter outlet pressure
Lube oil in cylinder head inlet pressure
Cooling water pressure
2) Temperature indication
Cylinders cooling water temperature scanner
Cylinder cooling water outlet temperature measurement system with Cu50 thermo resistor for each cylinder and scanned by a multi-channel meter.
Engine exhaust temperatures scanner
Pyrometric exhaust gas system with thermocouple for each cylinder and turbocharger, and scanned by a multi- channel meter.
Lube oil engine inlet /outlet temperature
Water engine inlet/outlet temperature
3) Engine RPM indicator with cranking and over speed protection.
4) Push buttons, indicating lamps, selector switches
- Common engine alarm
- Engine start permission
- Local / remote mode select
- Engine start / stop
- Flasher off
- Engine speed raise / low
- Emergency stop
Central control panel
A central control panel is installed in the control room, which is used for displaying signals for auxiliary equipments including oil storage level alarm, water level alarm, oil temperatures, steam pressure and others.
4.11.3 Protection system
4.11.4.1 Diesel engine
The diesel engine will stop automatically in case of the following failures:
- Very low lube oil pressure
- Very high water engine outlet temperature
- Engine over speed
The diesel engine will alarm automatically in case of the following failures:
- Low lube oil pressure
- Low water pressure
- High lube oil temperature
- High water temperature engine inlet
- Alternator bearing temperature high
4.11.4.2 DG electricity system
The generator adopts digital integrated relay protection system for monitoring and protection.
An ICBU-360 digital integrated relay is installed on generator switchgear, which is used for alternator protection, switch control, monitoring, measuring, display and SOE record.
The following functions are configured on the relay:
- Differential current
- Reverse power
- Instant trip current
- Voltage locked over current:
- Over current
- Over load
- Earth failure
- Over voltage
- Under voltage
- Low frequency
- Over frequency
4.11.4.3 11kV electrical system
One DMR301 digital integrated relay is installed on 11kV-outgoing panel, the following functions can be carried out on the relay:
- Over current
- Instant current trip
- Running record and failure store
- Controlling switch on site or on remote mode
5. Main equipments specifications
5.1 Diesel engine:
|
Model |
DN8320ZD6 |
|
Type |
Inline, four-stroke, direct injection, turbocharged, and after cooled |
|
Quantity |
14 sets |
|
Rated power |
3310kw |
|
Rated speed |
750r/min |
|
Bore/stroke |
320/380mm |
|
Starting method |
Compressed air |
|
Cooling system |
Water cooling radiator |
|
Dimension |
6085×2125×3314mm |
|
Weight |
31000kg |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
Main parts of DN8320ZD6 Diesel Engine
a. ABB turbocharger
b. WOODWARD electrical governor
c. GEA after cooler and lube oil cooler
d. Flexible coupling
5.2 Alternator
|
Model |
TWF-3000 |
|
Type |
Brush-less synchronous alternator |
|
Quantity |
14 sets |
|
Rated power |
3750KVA |
|
Rated speed |
750r/min |
|
Rated voltage |
11000V |
|
Frequency |
50HZ |
|
Power factor |
0.8 lagging |
|
Insulation class |
F/F |
|
Excitation |
AVR |
|
Dimension |
4275×2715×2570mm |
|
Weight |
18000kg |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
5.3 Heavy fuel oil centrifuge
|
Model |
PA626 |
|
Quantity |
4 sets |
|
Rating treatment L/h |
5900 |
|
Centrifuge Temperature |
90-98�?/DIV> |
|
Light phase output pressure: MPa |
0.2MPa |
|
Motor power KW |
3P/400V/50Hz/11kw |
|
Complete machine weight (kg) |
1600 |
|
Dimension |
1250X1200X1500 |
|
Material medium |
Heavy fuel oil (180CST/50�? |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
5.4 Common Circulating & Booster module
|
Model |
CRGD4.0-6.0LP |
|
Fuel feed capacity |
4.0 m3/h |
|
Fuel circulating capacity |
6.0m3/h |
|
Fuel supply pressure |
0.6Mpa |
|
Fuel feed pressure |
0.6Mpa |
|
Max. fuel temperature |
135�?/DIV> |
|
Min. Fuel feed rate |
50M3 |
|
Rated fuel temperature rise |
4-5�?min |
|
Viscosity before engine inlet |
9-13 cSt |
|
Viscosity deviation |
±1.5cSt |
|
Viscosity steady time |
Max. 3.5 mins |
|
Viscosity control accuracy |
Max. 3% |
|
Primary filter |
80 mesh/inch2 |
|
Fine filter |
Max. 10-30µ |
|
Power source |
3P 400V 50HZ |
|
Power |
17kW |
|
Load |
8kW |
|
Dimension LxWxH |
3500X1500X2100mm |
|
Weight |
2300kg |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
5.5 Exhaust Gas Boiler
|
Model |
LFL80-0.7 |
|
Rate steam capacity: |
700kg/H |
|
Quantity |
6 sets |
|
Steam pressure: |
7Bar |
|
Steam temperature |
170�?/DIV> |
|
Safe pressure |
0.75Mpa |
|
Heating area |
80m2 |
|
Boiler back pressue |
Max. 220pa |
|
Waste gas inlet temperature |
350�?/DIV> |
|
Waste gas outlet temperature |
200�?/DIV> |
|
Overall dimensions LxWxH |
1824x2310x5318mm |
|
Weight |
6000kg |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
5.6 Air compressor
|
Model |
CZ-20/30F |
|
Type |
Single row vertical, differential piston two-stage compression, air cooled |
|
Exhaust capacity |
Min. 20m3/h |
|
Quantity |
6 sets |
|
Rating pressure |
3MPa |
|
Cylinder bore |
1st stage: 102mm, 2nd stage: 90mm |
|
Piston stroke |
65mm |
|
Exhaust temperature |
Max. 85�?/DIV> |
|
Rotary speed |
1000r/min |
|
Shaft power |
<5kW |
|
Motor |
Y132S-6/5.5kW |
|
Overall dimensions |
970x440x700mm |
|
Weight |
155kg |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
5.7 Air Bottle
|
Model |
B500 |
|
Quantity |
8 sets |
|
Air inlet & outlet |
�?3 |
|
Working pressure |
2.94Mpa |
|
Volume |
500L |
|
Overall dimensions |
�?28x2305mm |
|
Weight |
468kg |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
5.8 S11-1600/11/0.4 Power transformer
|
Type |
S11-1600/11/0.4 |
|
Rating |
1600KVA |
|
Primary Volts |
11KV |
|
Secondary volts |
0.4KV |
|
Insulation level |
Standard |
|
Quantity |
1 set |
|
Manufacturer |
NBo zhongceGroup Co., Ltd |
5.9 Radiator
|
Model |
8VI 1250 H22-8230/2117 GEA |
|
Quantity |
14 sets |
|
Heat transfer |
1347kW for HT, 1275kW for LT |
|
Medium |
Water |
|
Mechanical power |
8x8.6 kW |
|
Fan speed |
700rpm |
|
Sound level @ 2 m |
80 ±3 dB(A) |
|
Manufacturer |
NBo zhongceGroup Co |
5.10 HFO unload station
|
Type |
HFO58 |
|
Quantity |
1 set |
|
Capacity |
58M3/h |
|
Outlet pressure |
0.28Mpa |
|
Motor power |
18.5Kwx2 |
|
Manufacturer |
NBo zhongceGroup |
5.11 Diesel oil unload station
|
Type |
DO58 |
|
Quantity |
1 set |
|
Capacity |
58M3/h |
|
Outlet pressure |
0.28Mpa |
|
Motor power |
18.5kWx2 |
|
Manufacturer |
|
5.12 Station batteries and battery charger panel
|
Model |
PGD7-�?180-220 |
|
AC input voltage |
400Vac±20% |
|
DC output voltage |
24V, 220V |
|
DC output current |
40A |
|
Storage battery capacity |
75Ah |
|
Accuracy of voltage regulation |
Max. ±0.2% |
|
Accuracy of current regulation |
Max. ±0.2% |
|
Ripple factor |
Max. 0.1% |
|
Power factor |
Min. 0.93 |
|
Efficiency |
Min. 95% |
|
Noise |
50dB |
|
Dielectric strength |
2000V 1 min without breakdown |
|
Operation environment |
Temperatur:-10 to 45�? Relative humidity：not greater than 90% at 20±5�?/DIV> |
|
Interface |
RS485, RS232 & RS422 |
|
High frequency rectifier module |
Emerson HD22020 3pcs |
|
PLC |
SIEMENS S7-200 |
|
LCD display screen |
HITECH PWS 5.7�?/DIV> |
|
Rectifier module |
Emerson HD2205 3pcs |
|
Maintenance-free lead-acid battery |
A400-180/12V 18 pcs |
|
Overall dimensions (LxDxH) |
800x800x2200mm 3pcs |
|
Manufacturer |
|
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