Title :
New development of third harmonic ground fault protection schemes for turbine-generator stator windings
Author :
Weijian, Wang ; Xie Xiaping ; Xiling, Zhong
Author_Institution :
Isinghua Univ., Beijing, China
Abstract :
The third harmonic (150 Hz) equivalent circuit of turbine-generator stator windings is introduced. The sensitivity of various 150 Hz ground fault protection schemes for stator windings are analyzed in detail by using the equivalent circuits. A ne protection scheme with high sensitivity is deduced, whose technical characteristics have been proved in practical operation
Keywords :
electric generators; fault currents; machine protection; stators; turbines; 150 Hz; equivalent circuits; stator windings; third harmonic ground fault protection schemes; turbine-generator;
Conference_Titel :
Developments in Power Protection, 1989., Fourth International Conference on
Conference_Location :
Edinburgh
