基于功率流的混合配电网潮流计算方法  

Hybrid power-flow calculation based on power flow for distribution network

作　　者：金勇[1,2] 刘俊勇[1] 李红伟[3] 张曦[1] 段豪翔 JIN Yong LIU Junyong LI Hongwei ZHANG Xi DUAN Haoxiang(School of Electrical Engineering and Information,Sichuan University,Chengdu 610065,China Sichuan Electric Power Company of State Grid,Chengdu 610041 ,China School of Electrical Engineering and Information,Southwest Petroleum University, Chengdu 610500,China)

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]国网成都供电公司,四川成都610041 [3]西南石油大学电气信息学院,四川成都610500

出　　处：《电力自动化设备》2017年第1期15-21,27,共8页Electric Power Automation Equipment

基　　金：国家高技术研究发展计划(863计划)资助项目(2014-AA051901)~~

摘　　要：基于配电网络的支路功率、支路功率损耗与节点注入功率的关系,推导了一种计算弱环配电网的潮流算法,该算法推导了一个混合求解矩阵,可以同时处理连支支路和PV节点,简化了计算过程。同时,该算法以功率流而不是复电流相量为参变量,实现了有功和无功分别计算。多个算例计算结果表明,该算法可达到牛顿-拉夫逊和回路计算法的计算精度,并且具有较高的计算效率,尤其是该算法的简化处理后,计算速度快、计算精度高。Based on the relationship among branch power,branch power loss and node injection power,a power flow algorithm for weakly meshed distribution system is deduced,which establishes a hybrid matrix to simultaneously process the link branches,slack buses and PV nodes for simplifying the calculation. It takes the power-flow rather than the complex current phasor as the variable to calculate the reactive and active powers respectively. The calculative results for multiple cases prove that,with higher calculation efficiency, the calculation accuracy of the proposed method reaches those of the Newton-Raphson method and the loop theory based method. After simplification,the proposed method has even faster calculation speed and higher calculation accuracy.

关 键 词：配电网 潮流 弱环网 功率变量 PV节点 混合求解 

分 类 号：TM711[电气工程—电力系统及自动化] TM744