可编程电网故障模拟电源的设计

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Abstract Recently, grid codes are proposed by many countries all over the world, which require that grid-connected wind turbines should possess fault-ride through capability, This means when the grid fault occurs, such as voltage dip, unbalance, harmonic distortion, frequency drift, phase angle jumping and so on, the wind turbines must be connected with the grid without jumping. In order to investigate the fault-ride through capability of wind generators, a special testing power supply is essential to simulate various grid faults assigned in the grid codes. For this purpose, this paper proposes a new programmable grid-fault emulating power supply, which can emulate almost all kinds of network faults listed in the grid codes. Experimental results validate the simplicity, flexibility and high reliability of the structure and control strategies, which indicate that the types and parameters of the simulated grid faults are adjustable and the functions of the device can be further expanded. It comes out that the programmable fault-emulating power supply can be widely used in the performance test of wind turbines and other electric devices.

Key words： Wind power grid codes grid faults emulating power supply PWM convertors

Received: 25 July 2011 Published: 20 March 2014

PACS:	TM31
	TM46

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	Articles by authors
	Xu Hailiang
	Zhang Wei
	Hu Jiabing
	Zhou Peng
	He Yikang

Cite this article:

Xu Hailiang,Zhang Wei,Hu Jiabing等. Design of a Programmable Grid-Fault Emulating Power Supply[J]. Transactions of China Electrotechnical Society, 2012, 27(10): 91-97.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I10/91

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