计及低电压穿越控制的双馈风力发电机组短路电流特性与故障分析方法研究

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Abstract The enlarged scale of doubly-fed induction generator (DFIG) is connected to the power system and mostly DFIG units generally have a low voltage ride through (LVRT) capability recently.The LVRT property will have notable influences on the short circuit currents in DFIG’s fault.Then the imprecise short-circuit current calculation may affect the results of system fault analysis and thus contribute considerable errors to the evaluation of the protection action characteristic.In this paper,according to the input-output characteristic of the converter,the equivalent model and the transient model of DFIG are provided.The influence mechanism of the LVRT control strategy is analyzed,and the short circuit current calculation model of DFIG is established.Based on the real time digital simulator (RTDS),the experiment platform with physical controller is founded,by which the proposed short-circuit current calculating model is validated.The fault analysis method for the grid with penetration of DFIG is analyzed.Results of this research are available for the study of the influence of DFIG on the protection characteristics.

Key words： Doubly-fed induction generator low voltage ride through short circuit current relay

Received: 24 April 2015 Published: 18 December 2015

PACS:

TM711

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	Articles by authors
	Yin Jun
	Bi Tianshu
	Xue Ancheng
	Yang Qixun

Cite this article:

Yin Jun,Bi Tianshu,Xue Ancheng等. Study on Short Circuit Current and Fault Analysis Method of Double Fed Induction Generator with Low Voltage Ride-through Control Strategy[J]. Transactions of China Electrotechnical Society, 2015, 30(23): 116-125.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I23/116

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