风电出力平滑效应的分析与应用  

Analysis and Application of Wind Farm Output Smoothing Effect

作　　者：刘燕华 田茹[1] 张东英[1] 张旭[1] 周继惠[2] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区102206 [2]郑州供电公司,河南省郑州市450006

出　　处：《电网技术》2013年第4期987-991,共5页Power System Technology

基　　金：国家863高技术基金项目(2012AA050201)~~

摘　　要：研究风电场和风电场群的出力规律是分析并网风电对电力系统的影响以及寻找解决对策的基本前提。以分析风电出力波动性规律为基础,寻求风电场群相对于单个风电场出力的变化规律,研究了风电场群的空间规模效应,即平滑效应。给出平滑效应的定义、表现、产生机理,以及影响因素的量化分析方法。以一个实际区域内的4个风电场组成的风电场群为算例研究对象,计算分析了风电出力的平滑效应,从相关分析的角度出发,指出了风电场出力之间的负相关性是形成平滑效应的内在原因。最后讨论了不同时间尺度下,平滑效应在系统有功平衡中的应用。Wind power output characteristics study acts as the basic premise for analyzing its effects on the power system, as well as figuring out or corresponding solutions. Based on the analysis of wind power output fluctuations, this paper summarized the wind power variation discipline from a single wind farm to wind farm clusters, focusing on the space-scale effect of wind farm clusters, that is, the smoothing effect. Firstly, the definition, performance and mechanism of smoothing effect were discussed, and the method of quantitative analysis for influencing factors of smooth effect was proposed. Then, by taking wind farm clusters integrated with a practical regional grid as the case study, the indicator of wind farm clusters＇ smoothing effect was calculated. The result shows that the negative correlation of wind farm outputs is essential reason of smoothing effect. Finally, the application of smooth effecting to active power balance in power system considering different time scales was discussed.

关 键 词：风电场群 功率波动性 平滑效应 空间规模 有功 平衡 

分 类 号：TM715[电气工程—电力系统及自动化]