多极隐极发电机励磁绕组匝间短路时的定子分支环流谐波特性

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Abstract In order to find out the physical principles and short circuit characteristics behind inter-turn short circuits of field winding in multipole non-salient-pole generator,the magnetomotive force and stator no-load electromotive force under normal condition and fault were deduced.And the stator branch circulating current under the fault was also deduced.Through comparative analysis,the relation between the pole pairs and stator no-load electromotive force as well as the relation between the pole pairs and harmonic currents are revealed.Further,the current harmonic characteristics are analyzed with the field winding fault in different degrees of the same position and different positions of the same degree.The relationship among stator branch circulating current,fault position and fault degree was obtained.Last,taking a nuclear power half speed non-salient-pole generator as example,the two conditions have been simulated.The results of simulation and mathematic calculation are consistent,and the correctness of analytic method is verified.The formula provides a theoretical basis for the online location of the field winding inter-turn short circuit fault.

Key words： Multipole non-salient-pole generator field winding inter-turn short circuit harmonic circulating current

Received: 27 January 2016 Published: 17 April 2017

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TM341

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	Xin Peng
	Ge Baojun
	Tao Dajun
	Zhao Hongsen
	Zhang Huiyu

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Xin Peng,Ge Baojun,Tao Dajun等. Stator Branch Circulating Current Harmonic Characteristics of Multipole Non-Salient-Pole Generator with Field Winding Inter-Turn Short Circuits[J]. Transactions of China Electrotechnical Society, 2017, 32(7): 67-76.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I7/67

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