基于改进正弦调制电流注入的三相交流电源系统谐波阻抗测量研究

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Abstract The harmonic impedance of system in static three-phase coordinates is the key parameter to estimate the harmonic in system. In the stability analysis of system based on impedance criterion, the harmonic impedance in dq coordinates must be extracted. The harmonic impedance models of typical elements in power system are derived. An improved impedance measurement method based on modulated current injection is proposed. A simulation model of three-phase ac system is developed in PSCAD and an impedance measurement unit is implemented. Both the simulation and experimental results validate the effectiveness of the proposed method.

Key words： Harmonic impedance measurement modulated current current injection

Received: 22 July 2013 Published: 25 May 2015

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TM76

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	Articles by authors
	Shi Hongtao
	Zhuo Fang
	Yang Zhen
	Hou Lixiang
	Yue Xiaolong
	Zhang Dong

Cite this article:

Shi Hongtao,Zhuo Fang,Yang Zhen等. Study of Harmonic Impedance Measurement for Three-Phase AC Power System Based on an Improved Modulated Current Injection Method[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 257-264.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I8/257

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