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《Yangtze River》 2018-12
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Operation fault analysis of francis turbine governor

LIU Wenzhang;LIU Bin;DU Nan;LIU Yingying;State Grid Sichuan Technical Training Center;  
Oil leakage and wiggle inevitably occur in the actual operation of hydraulic turbine governor,but the conventional theoretical analysis and simulation study can hardly reflect the real operation state. Therefore,in view of the faults of the relay axle wiggle and the frequent start-up of the pressure oil pump in the governor operation of the Francis turbine set,according to the control and maintenance principles of the governor,the fault treatment is studied by theoretical analysis and the feasible treatment plan is put forward. The interval time of pressure oil pump start-ups before and after the maintenance are compared and analyzed. The results show that the governor has a wiggle fault in 38% ~ 45% opening,and there still exists the oil leakage fault in the non-fault opening,which verifies the accuracy of the theoretical analysis. The interval time after maintenance meets the operational requirements,which proves the reasonableness of the treatment and provides a reference for the similar fault treatment of same type power stations.
【CateGory Index】: TV734.4;TV737
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