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《Automation of Electric Power Systems》 2003-20
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THE EARTH-FAULT PROTECTION FOR GENERATOR ROTOR FIELD COIL

Guo Guangrong(Chongqing Electric Power College, Chongqing 400053, China)  
This paper provides a new exciting circuit one or two points earth fault protection based on switchable sampling principle. It can detect the location and transitional resistor of one point earth fault, and the transitional resistor and short current between two earthed points of two points earth fault. According to these criteria, the whole structure of the field coil earth fault protection is proposed. Compared with the conventional protection, the new protection is of high sensitivity and novel and brief algorithm.
【CateGory Index】: TM310.7
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