风力发电选址和渗透率对连锁故障影响的研究  

Research on the effects of location and penetration of wind power generation on cascading failure

作　　者：杨田[1] 刘晓明[2] 吴其[1] Yang Tian;Liu Xiaoming;Wu Qi(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China;Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy,Tianjin Polytechnic University,Tianjin 300387,China)

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870 [2]天津工业大学天津市电工电能新技术重点实验室,天津300387

出　　处：《可再生能源》2018年第11期1631-1637,共7页Renewable Energy Resources

基　　金：国家自然科学基金重点项目(51337001);国家自然科学基金项目(51377106)

摘　　要：风力发电选址和渗透率提高加剧了电网系统潮流分布的复杂性,小范围的潮流异常分布能够引发连锁故障。文章基于节点电气介数方法分析了连锁故障,研究了在不同节点条件下的风力发电机选址、渗透率的变化对连锁故障影响的程度。研究发现,风电负荷加载在电气介数较小的节点上会引发系统潮流分布均匀性下降,导致潮流转移至其他线路,进而加剧连锁故障。通过IEEE30节点系统的仿真表明:风电渗透率的提升加剧了连锁故障;在相同的渗透率下,选址节点的电气介数越小其连锁故障越严重。The main cause for cascading failure is large-scale overload caused by localized abnormal flows. With the increase of wind power penetration, the complexity of flow distribution is strengthened. Therefore,it is necessary to study influences of site selection and permeability of wind power generation on cascading failure. An analysis method based on electric betweenness of nodes was put forward and influences of permeability change on cascading failure on different location selection for wind power generation were researched. According to the study, it was found that when the electric betweenness was low, the overload of wind power led to declining uniformity of power flow distribution, resulting in transfer of flows to other lines. As a result, the heavy load of lines was further aggravated to promote the development of cascading failure. Simulation results of the IEEE30 point system showed that with the increase of wind power penetration, the cascading failure was aggravated; and under the same permeability, the lower the electric betweenness of location selection was, the severer cascading failure would be.

关 键 词：连锁故障 风力发电选址 渗透率 电气介数 

分 类 号：TK51[动力工程及工程热物理—热能工程]