Green Energy
MASTER FUEL TRIP , CONDITIONS :-
1-REHEATER PROTECTION
2-DELAYED LIGHTING
3-LOSS OF ALL FUEL INPUT
4-DRUM LEVEL HI HI
5-DRUM LEVEL LOW LOW
6-ALL FD FAN STOP
7-FURNACE PRESSURE HI HI
8-CCS WATCHDOG ABNORMAL
9-COMBUSTION AIR FLOW LOW LOW
10-CONDENSER PROTECTION
11-PARTIAL LOSS OF FLAME
12-BOILER EMERGENCY TRIP
13-LOSS OF ALL FLAME
14-HP/LP BYPASS VALVE ABNORMAL CLOSE
15-ALL FUEL TRIP DELAY TRIP
- Load Swing Test
YESTERDAY , We made a test at our power station ( 2*350 MW - Gas/Oil Fired ) , this test is LOAD SWING TEST. This test is implies the load of the unit at 350MW , for a while . and collect our data from the unit especially the boiler and Turbine...
- Load Rejection Test (governor Test)
The purpose of Turbine Load Rejection Test is to verify and demonstrate the governor function to sustain a load rejection in order to prevent the turbine from overspeed tripping, steady speed control at no-load operation and remain in service without...
- { Boiler And Turbine } Control Modes
Boiler Master (Firing Rate Demand) Boiler Master (basic firing rate demand) computation is dependent on the Current operating mode like Coordinated mode, Boiler Follow mode, Turbine Follow mode,Manual mode. This demand is transmitted in parallel to...
- Reverse Power Protection., Theory & Setting .
Reverse Power Protection. 1- Protection against overspend 32G (# 1). In case of Turbine Failure, the Turbine is tripped and then the Generator is tripped by operation of reverse power relay to prevent overspending...
- Swirling Problem At Boiler’s Start-up
At boiler’s start-up, one should take care of water swirling at boiler’s Drum, especially when you start at Cold Start Mode. Swirling at cold start, makes water level fluctuates very much at the Drum. Therefore it can trip the boiler with Drum...
Green Energy
BOILER (MASTER FUEL TRIP)
Steam Generator ( boiler ) is very important equipment at thermal power units , Boiler is the steam supply for the unit to rotate the turbine's rotor , hence produce electricity at Generator's stator.
Boiler usually equipped with solar and Main gas firing equipments , and you can imagine that huge boiler disappear in seconds unless operator take his precaution from operation hazards., hence Boiler always equipped with a protection relays to trip the boiler out of service if hazards conditions has happened , these relays are enclosed at huge protection system is called ( Master Fuel Trip ).
From its name ( Master Fuel Trip ) , it produces trip signal for fuel systems from operation , then trip the boiler out of service away from danger. this relay needs many conditions to operate , these conditions will be found at the following figure.
MASTER FUEL TRIP , CONDITIONS :-
1-REHEATER PROTECTION
2-DELAYED LIGHTING
3-LOSS OF ALL FUEL INPUT
4-DRUM LEVEL HI HI
5-DRUM LEVEL LOW LOW
6-ALL FD FAN STOP
7-FURNACE PRESSURE HI HI
8-CCS WATCHDOG ABNORMAL
9-COMBUSTION AIR FLOW LOW LOW
10-CONDENSER PROTECTION
11-PARTIAL LOSS OF FLAME
12-BOILER EMERGENCY TRIP
13-LOSS OF ALL FLAME
14-HP/LP BYPASS VALVE ABNORMAL CLOSE
15-ALL FUEL TRIP DELAY TRIP
- Load Swing Test
YESTERDAY , We made a test at our power station ( 2*350 MW - Gas/Oil Fired ) , this test is LOAD SWING TEST. This test is implies the load of the unit at 350MW , for a while . and collect our data from the unit especially the boiler and Turbine...
- Load Rejection Test (governor Test)
The purpose of Turbine Load Rejection Test is to verify and demonstrate the governor function to sustain a load rejection in order to prevent the turbine from overspeed tripping, steady speed control at no-load operation and remain in service without...
- { Boiler And Turbine } Control Modes
Boiler Master (Firing Rate Demand) Boiler Master (basic firing rate demand) computation is dependent on the Current operating mode like Coordinated mode, Boiler Follow mode, Turbine Follow mode,Manual mode. This demand is transmitted in parallel to...
- Reverse Power Protection., Theory & Setting .
Reverse Power Protection. 1- Protection against overspend 32G (# 1). In case of Turbine Failure, the Turbine is tripped and then the Generator is tripped by operation of reverse power relay to prevent overspending...
- Swirling Problem At Boiler’s Start-up
At boiler’s start-up, one should take care of water swirling at boiler’s Drum, especially when you start at Cold Start Mode. Swirling at cold start, makes water level fluctuates very much at the Drum. Therefore it can trip the boiler with Drum...