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New development of third harmonic ground fault protection schemes for turbine-generator stator windings

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3 Author(s)
Wang Weijian ; Isinghua Univ., Beijing, China ; Xie Xiaping ; Zhong Xiling

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

Published in:

Developments in Power Protection, 1989., Fourth International Conference on

Date of Conference:

11-13 Apr 1989