2、treatmentofcoalgrindingmachinetripfaultof350MWgeneratorstatorYangHao1(1.DatangchangchunThirdco-Generationpowerplant,Changchun,Jilin,China)Abstract:The present work was aimed at a malfunction ofthecoalpulverizeroilstationcausedby the fault of coal mill tripping accidents during the
3、trial operation of 350 MW power generation unit in a power plant.AccordingtothefaulthistorycurveandtheDCSdata,andthroughaseriesofexaminationsandtests,foundthatMillTrippingreason,isbecausethefactoryheatinghydrophobicpumpinverterinputsideharmonicinterferencecausedbycoaloilstationcont
4、rolbox of double power supply switch action causes the control power source failure caused by.According to the handling and analysis of the whole accident,some experiences and advices were proposed for handling similar faults.Keywords:ThermalPowerPlant,Generator,CoalGrrindingMachin