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2018
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鐢垫祦鍒嗛噺锛屽苟閫氳繃涓�鍙板姛鐜囦负
24kW
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DOI
锛?/p>
10.15938/j.jhust.2018.01.018
涓浘鍒嗙被鍙凤細
TM32
鏂囩尞鏍囧織鐮侊細
A
鏂囩珷缂栧彿锛?/p>
1007-2683
锛?/p>
2018
锛?/p>
01-0099-06
Abstract
锛?/p>
On the basis of negative sequence current generation mechanism analysis of
synchronous generator stator winding interturns short circuit
锛?/p>
the method of detecting and
diagnosing synchronous generator stator winding interturns short circuit is proposed
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which uses the
negative sequence current as fault signature. A fieldcircuit coupled mathematical model of
synchronous generator is built
锛?/p>
based on the fieldcircuit coupled principle. Firstly
锛?/p>
stator winding
interturns short circuit happened in synchronous generator with half load is simulated. And then
threephase current phase difference
锛?/p>
amplitude and negative sequence current component before and
after fault is calculated according to the model. The accuracy of model and rationality of theoretical
analysis is demonstrated by the use of experimental data coming from 24kW synchronous.
Meanwhile
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the short circuit fault with the same branch and different branch impact on the negative
sequence current is also simulated and analyzed. The results have some significance for synchronous
generator stator winding interturns circuit fault monitoring and diagnosis.
Keywords
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sequence current
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stator short circuit fault
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fieldcircuit coupled
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synchronous
generator
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fault diagnosis
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