风电并网引起电网电压波动的评价方法及应用

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Abstract The random fluctuation of wind power output will cause the voltage fluctuant randomly in the power grid with wind power integration. In this case,it is very necessary to search an all-round and accurate evaluating method of voltage fluctuation. In view of this condition,this article focuses on the overall and the partial two aspects of the voltage fluctuation and constructs three voltage fluctuation evaluation indexes including voltage distribution index,skewness index and retention index according to the characteristic of the voltage random distribution. Bus indexes and system indexes are defined respectively. These proposed indexes can well reflect the random distribution of the voltage in the network with wind power integration. The wind farm steady state model is built to evaluate the Voltage fluctuation. Compared with the proposed model and indexes,the evaluation method and process of the voltage fluctuation in the power grid with wind power integration based on Monte Carlo sampling is researched in this paper. The IEEE 36-bus system is taken as example to verify the effectiveness of these proposed indexes and methods and analyze the influence of some factors to voltage fluctuation in the network. These factors include the fluctuation of wind power output,the location of wind power integration and so on. The simulation results in this paper would provide reference for wind power integration to power grid reasonably. The proposed indexes and evaluation method is applied to solve the PCC optimization of wind farm and an example is given to illustrate the practicability of the indexes and evaluation method.

Key words： Wind power integration voltage fluctuation random distribution evaluation indexes

Received: 05 June 2012 Published: 11 December 2013

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TM614

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	Articles by authors
	Zhu Xingyang
	Zhang Jianhua
	Liu Wenxia
	Qiu Wei
	Wu Xu
	Jiang Cheng

Cite this article:

Zhu Xingyang,Zhang Jianhua,Liu Wenxia等. Evaluation Methodology and Its Application of Voltage Fluctuation in Power Network Caused by Interconnected Wind Power[J]. Transactions of China Electrotechnical Society, 2013, 28(5): 88-98.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I5/88

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