含分布式风电的配电网预防性重构  

Preventive Reconfiguration of Distribution Networks with Distributed Wind Power

作　　者：陈春[1] 汪沨[1] 黎灿兵[1] 刘蓓[1] 谢夏慧[1] 董旭柱 何荣涛 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082 [2]南方电网电力科学研究院,广州510000 [3]许继智能电力设备有限公司,厦门361101

出　　处：《电工技术学报》2013年第9期172-177,共6页Transactions of China Electrotechnical Society

基　　金：国家高技术研究发展计划(863计划)资助项目(2011AA05A114)

摘　　要：分布式风电的接入不仅改变了放射状配电网的潮流分布,且其出力的随机性与间歇性给配电网运行带来了一定的风险。本文考虑风电功率预测,并结合配变负荷预测数据,以线路过载和电压越限两个指标构造风险目标函数,搜索未来24h风险最低的网络结构,通过预防性重构,降低电网的运行风险。针对预防性重构提出了一种混合粒子群算法,采用无不可行解的编码规则,既提高了搜索速度又有助于找到全局最优解。算例仿真证实了本模型和算法的有效性。The connection of distributed wind power has not only changes the power flow distribution of radial distribution network, but also its intermittent and fluctuant pose certain risks to the operation of distribution network. This paper is based on prediction of wind output power and load, using two indexes--the line overload and voltage over-limit to construct a risk objective function, searching the network structure with minimum risk in the next 24 hours, reducing the risk of grid operation through preventive reconfiguration. In this paper, a hybrid particle swarm algorithm is proposed, and a new encoding rule is taken which can avoid creating infeasible solutions. The algorithm can improve the searching speed and be easier to find out the global optimum solution. Simulation examples show the effectiveness of the model and algorithm.

关 键 词：分布式风电 配电网 预防性重构 混合粒子群算法 

分 类 号：TM27[一般工业技术—材料科学与工程] TM614[电气工程—电工理论与新技术]