300MW机组MFT后机炉电联锁优化方案

300MW power unit MFT interlock after the turbine and boiler optimization program

锅炉总燃料跳闸(MFT)是火力发电厂最常见的事故之一,丰城电厂将三大主机联锁循环断开,采用了锅炉MFT后汽机不跳机,发电机不解列;汽机跳闸锅炉MFT,发电机不解列的运行方案。使锅炉MFT后或汽机误跳闸后,发电机不解列,在极短时间内恢复生产。

The safety of boiler plays an important role for the plant′s continuous operation.The boiler MFT is the most common accident in a thermal power plant,the incidence of MFT accounts for 60% of the total power plant accidents.In the previous Turbine-Boiler-Generator interlock logic,So Fengcheng Power Plant cancel the circulation of the Turbine-Boiler-Generator interlock,turbine trip and generator disconnection from grid will not occur after the boiler MFT,and the generator will not disconnect from grid if turbine trip and the boiler MFT happens.In this way,the generator will not lose connection from grid under boiler MFT or turbine trip condition,and the production process can resume in a very short time.