Voltage sag problems in large‐scale clustering wind farms
Voltage sag problems in large‐scale clustering wind farms
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DOI：
10.1002/tee.22062
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发表时间：
2015-01
影响因子：
1
通讯作者：
Xiangning Lin;Yixin Zhuo;Feng Zhao;Dexian Yang
中科院分区：
文献类型：
--
作者：
Xiangning Lin;Yixin Zhuo;Feng Zhao;Dexian Yang
近年来，随着风电大规模发展和并网，因电压骤降引起的风电场级联跳闸事故时有发生。在提出对策之前，有必要厘清风电场电压凹陷问题。首先，提出了三种电压暂降风险指标。其次，给出了简化的双馈感应发电机（DFIG）短路计算等效电路、风速随机模型和母线故障模型。第三，利用Digsilent动态规划语言（DPL）实现风电场电压暂降的评估方法，分析电压暂降的严重程度和概率。最后，以风电场接入WSCC九母线基准系统为例进行了详细分析，验证了该方法的有效性。©2014日本电气工程师学会。约翰·威利父子出版公司。
Accompanied by the development of large‐scale wind energy and integration into grid in China, wind farm cascading trip‐off accidents resulting from voltage sag have occurred frequently in the past few years. Before proposing countermeasures, it is necessary to clarify the voltage sag problem of wind farms. First, three voltage sag risk indices are proposed. Second, the simplified equivalent circuit of double fed induction generator (DFIG) for short‐circuit calculation, stochastic model of wind speed and the fault model of buses/lines are presented in this paper. Third, assessment method of voltage sag in wind farm, implemented by Digsilent dynamic programming language (DPL), is proposed to analyze the severity and probability of voltage sag. Finally, a case study of wind farm connected to WSCC nine‐bus benchmark systems is analyzed in detail, and the validity of the proposed approach is confirmed. © 2014 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.