基于HHT的风电波动平抑策略研究  

Research on mitigation strategy of wind power fluctuations based on HHT

作　　者：孙玉树 唐西胜[1] 田春筝 苗福丰 

机构地区：[1]中国科学院电工研究所,北京100190 [2]国网河南省电力公司经济技术研究院,郑州450052

出　　处：《电测与仪表》2018年第1期78-83,共6页Electrical Measurement & Instrumentation

基　　金：国家重点研发计划"分布式可再生能源发电集群并网消纳关键技术及示范应用"(2016YFB0900400);中国科学院电工研究所所长基金(Y760141CSA);国家电网公司项目(SGHAJY00GHJS1600068)

摘　　要：文章应用多类型储能平抑风电功率波动,以克服单一储能的缺点。首先,利用经验模态分解(EMD)将风电分解,然后应用希尔伯特黄变换(HHT)将其划分为高中低三个频段。再者,根据并网波动率要求,动态获取风电的低频部分作为风电并网功率;依据储能爬坡功率的约束,将中频段部分主要由锂电池吸收,而高频段由超级电容器吸收,从而提高多类型储能的使用寿命和经济性。最后,应用算例分析了基于HHT的风电波动平抑策略的有效性。Multi-type energy storage is used to overcome the shortcomings of single energy storage for smoothing wind power fluctuations in this paper. Firstly, wind power is decomposed by empirical mode decomposition （ EMD）, and high, medium and low bands are divided by Hilbert Huang transform（HHT）. In addition, grid-connected wind power will be acquired dynamically by the adjustment of its low band according to fluctuation rate requirement. Medium and high bands are compensated primarily by lithium battery and super-capacity with energy storage ramp power con- straint. Then, the service life and economy of multi-type energy storage will be improved. Finally, the validity of wind power fluctuations mitigation strategy is verified by a numerical example.

关 键 词：风电波动平抑 多类型储能 EMD HHT 

分 类 号：TM933[电气工程—电力电子与电力传动]