平抑风电波动的混合储能系统的容量配置

马速良; 蒋小平; 马会萌; 吴振威

引用本文:	马速良,蒋小平,马会萌,等.平抑风电波动的混合储能系统的容量配置[J].电力系统保护与控制,2014,42(8):108-114.
	MA Su-liang,JIANG Xiao-ping,MA Hui-meng,et al.Capacity configuration of the hybrid energy storage system for wind power smoothing[J].Power System Protection and Control,2014,42(8):108-114

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平抑风电波动的混合储能系统的容量配置
马速良¹, 蒋小平¹, 马会萌², 吴振威¹
1.中国矿业大学（北京）机电与信息工程学院，北京 100083;2.中国电力科学研究院，北京 100192

摘要:

风电功率波动对电网造成不容忽视影响。用滑动平均法平滑风电功率，降低风电并网对电网的影响。滑动窗口的选取具有随机性，直接影响平滑效果。该研究提出滑动平均和标准校正的组合方法，分离出并网分量和储能分量。混合储能系统采用小波分解算法，可以有效地解耦出电池及超级电容器分量。对各储能分量统计分析，证明它们均服从t location-scale分布。在不同置信水平和容量下，以波动量的均值、方差、波动范围及波动点数为指标，分析混合储能系统的平抑效果。

关键词: 风电波动混合储能容量配置滑动平均校正法小波分析带移位因子与伸缩系数的t分布

DOI：

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基金项目:国家高技术研究发展计划（863计划）（2012AA050203）；国家自然科学基金项目(51277157)

Capacity configuration of the hybrid energy storage system for wind power smoothing

MA Su-liang¹, JIANG Xiao-ping¹, MA Hui-meng², WU Zhen-wei¹

1.School of Mechanical Electronic & Information Engineering, China University of Mining & Technology, Beijing 100083, China;2.China Electric Power Research Institute, Beijing 100192, China

Abstract:

It can not be ignored that active power fluctuations in wind power's influence on the grid. Smoothing active power of wind power by moving-average method can diminish the fluctuation quantity of the grid-connected wind power. Sliding window that is random directly affects the smoothing result. This paper comes up with moving-average and standard calibration combinatorial method to separate grid-connected component and hybrid energy storage component from wind power. It decouples battery component and super-capacitor component by the wavelet analysis theory. It researches the probability distributions of battery component and super-capacitor component by the means of mathematic statistics and verifies that they follow t location-scale distribution. At the different confidences and capacities, this paper calculates the means, the variances, the range of fluctuation and the points of fluctuation of active power fluctuations in wind power to estimate different smoothing effects of hybrid energy storage systems.

Key words: wind power variation capacity configuration of hybrid energy storage systems moving average correction method wavelet analysis t location-scale distribution

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