Problem and Optimization of the Main Fuel Trip Protection Circuit for 320 MW Power Plant Boiler
The boiler main fuel trip(MFT)is an important protection circuit for thermal power plant boilers.Its significance lies in the fact that when a special situation occurs,this control circuit can quickly cut off the fuel entering the furnace to avoid accidents.At present,the circuit design of most thermal power plants basically meets the requirements of relevant standards,but there is still a risk of protection failure in the circuits of individual units.Elaborate on the circuit problems discovered during the maintenance period of a certain power plant,redesign the MFT protection circuit during the unit maintenance period,and complete the specific implementation to further improve the reliability of the MFT protection circuit.