主动配电网三相解耦潮流算法  

Three-Phase Decoupled Power Flow Algorithm for Active Distribution Networks

作　　者：杨雄[1,2] 卫志农[1] 孙国强[1] 孙永辉[1] 杨永标[3] 陈璐[3] 

机构地区：[1]河海大学能源与电气学院,南京210098 [2]江苏省电力公司电力科学研究院,南京211103 [3]国电南瑞科技股份有限公司,南京211106

出　　处：《电工技术学报》2016年第2期186-195,共10页Transactions of China Electrotechnical Society

基　　金：国家电网公司科技项目(智能配用电的技术体系及仿真基础性问题研究);国家自然科学基金(51277052;51107032和61104045);江苏省普通高校研究生科研创新计划(CXZZ13_0238)资助项目

摘　　要：随着主动配电网技术迅速发展,分布式电源(DG)规模化接入,传统配电网潮流算法难以满足主动配电网潮流计算的要求。针对这一情况,提出一种能高效处理多类型DG规模化接入和环网的主动配电网三相解耦潮流算法。该算法基于序分量法和不对称线路三序解耦-补偿模型,结合主动配电网的特点和道路-回路分析法,详细推导PQ、PQ(V)、PV和PI节点类型DG规模化并网和无功补偿设备接入的潮流模型,采用三相解耦及并行计算,极大地提高算法计算速度和效率,节省内存空间,实现高效的主动配电网三相解耦潮流计算。通过IEEE 37、69和123母线测试系统验证了该算法的有效性、良好的收敛性以及较强的处理多类型DG规模化接入和环网的能力,且算法性能远优于传统算法。With the development of active distribution network technologies and the connection of large-scale distributed generations （DGs） to active distribution networks, the traditional power flow methods are difficult to meet power flow calculation for active distribution networks. Therefore, in this paper, a three-phase decoupled power flow algorithm for active distribution networks is proposed, which has high efficiency of processing multi-type large-scale DGs and meshed networks. The pro- posed algorithm uses the sequence component analysis approach and the three-sequence decoupling- compensation models of unsymmetrical branches, and combines the special topological structure of active distribution network with the path-loop analysis approach. The power flow models of the large-scale PQ-node, PQ（V）-node, PV-node and PI-node type DGs and the var compensators are derived in detail, and the three-phase decoupled power flow can be parallel calculated with smaller CPU time and less memory space. The results of 1EEE 37-bus, 69-bus and 123-bus test systems verify the effectiveness and good convergence of the proposed algorithm. Meanwhile, it is shown that the proposed algorithm has strong ability to process multi-type large-scale DGs and meshed networks, and is superior to the traditional algorithms.

关 键 词：主动配电网 三相解耦 潮流计算 环网 分布式电源 三相不平衡 无功补偿 

分 类 号：TM743[电气工程—电力系统及自动化]