基于序分量的弱环配电网三相解耦潮流算法  

A Three-phase Decoupled Power Flow Algorithm for Weakly Meshed Distribution Networks Based on the Sequence Component

作　　者：杨雄[1] 卫志农[1] 孙国强[1] 孙永辉[1] 丁孝华[2] 许晓慧[2] 

机构地区：[1]河海大学可再生能源发电技术教育部工程研究中心,江苏省南京市210098 [2]中国电力科学研究院(南京),江苏省南京市210003

出　　处：《中国电机工程学报》2014年第7期1167-1174,共8页Proceedings of the CSEE

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);国家自然科学基金项目(51277052;51107032;61104045);江苏省普通高校研究生科研创新计划项目(CXZZ13_0238)~~

摘　　要：为实现智能配电网对弱环三相潮流的高效计算要求,提出了一种基于序分量的弱环配电网三相解耦潮流算法,该算法采用序分量法进行配电网三相潮流建模,实现三序解耦;利用配电网三序解耦的特点,以及不对称线路的三序解耦–补偿模型,在序网络模型中基于道路的回路分析法提出一种改进的弱环配电网三序潮流计算方法。该算法充分结合了序分量计算的高效性和道路回路分析法处理弱环网的优势,提高了计算效率和计算速度,具有很好的收敛性和较强的环网处理能力,并且随着环路的闭合,该算法的迭代次数还会减少。通过测试算例验证了该算法的正确性和有效性,以及收敛性好、计算速度快和处理环网能力强的特点。In order to do power flow calculation efficiently for weakly meshed three-phase smart distribution network, the paper proposed a three-phase decoupled power flow algorithm based on sequence component. Firstly , three-phase decoupled power flow model of distribution system was established by using the sequence component method, and considering the characteristics of three-sequence decoupled and the three-sequence decoupling-compensation models of unsymmetrical branches. Then, based on the path and loop analysis method, an improved three-sequence power flow calculation method was presented. The proposed algorithm combines the computational efficiency of the sequence component method with the strong ability of processing loops of the path-loop analysis method, which improves the computational efficiency and speed. It has good convergence and strong ability of processing the loops. With the closing of the loops, the number of iteration will decrease. The case studies verify the correctness, effectiveness, good convergence, fast computational speed and strong ability of processing the loops of the proposed algorithm.

关 键 词：弱环配电网 三相解耦 潮流计算 三相不平衡 序分量 

分 类 号：TM74[电气工程—电力系统及自动化]