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湖北省宜昌市秭归县光明电站建于20世纪80年代后期,为400 kW的低压机组。励磁方式为三相半控桥晶闸管整流电路,额定励磁电压35 V,额定励磁电流135 A。由于运行年久,设备逐日老化,故障渐增。其中,电气设备的励磁控制部分电路复杂,经常发生励磁故障,造成多次停产修理,影响了电站的安全运行和经济效益。励磁部分采用多块印制电路板插件,在山区湿
Yichang City, Hubei Province, Zigui Guangming Station was built in the late 1980s, 400 kW low-voltage units. Excitation method for the three-phase half-controlled bridge thyristor rectifier circuit, the rated excitation voltage 35 V, rated excitation current of 135 A. As the operation for a long time, equipment aging day by day, the fault increases. Among them, the electrical equipment excitation control part of the circuit complexity, frequent excitation failure, resulting in many discontinued repair, affecting the safe operation of power plants and economic benefits. Magnetizing part of the multi-block printed circuit board plug-in, wet in the mountains