电力系统保护与控制Issue(5)：17-22,6.
含分布式电源的配电网潮流改进算法
Improved power flow calculation of distribution network with DG
摘要
Abstract
Because the traditional power flow algorithm can't solve the problem of distribution network with DG, the traditional back/forward sweep method is improved. The traditional algorithm can't handle PV nodes, so the PV nodes are converted to PQ nodes to solve after introducing node reactance matrix. At the same time, in order to solve the problem that traditional reactive initial value determination method will increase iteration times in radial distribution network, the method of determining the reactive initial value is improved based on the reactive apportion principle. Finally, the simulation model of American PG&E 69 nodes system is established. Based on this, the iterative times and computation time of power flow calculation are contrasted between two cases:one is to connect the distribution network to corresponding DGs which are regarded as PQ, PI, PV nodes individually, and the other is to install all types of DGs in a mixed way. Then three kinds of methods are compared, namely, the method based on the apportion principle, the method with the initial value as zero and the method with the initial value as average value. Analysis results show that the improved algorithm can calculate the power flow quickly in both cases;meanwhile, the new reactive initial value determination method reduces the iteration times and saves calculation time, which verifies the validity and feasibility of the improved algorithm.关键词
分布式电源/配电网/潮流计算/无功初值/迭代次数Key words
distributed generation (DG)/distribution network/power flow calculation/initial value of reactive power/iterative times分类
信息技术与安全科学引用本文复制引用
闫丽梅,谢明霞,徐建军,薛晨光,任伟建,王琼..含分布式电源的配电网潮流改进算法[J].电力系统保护与控制,2013,(5):17-22,6.基金项目
中国博士后科学基金面上资助(20090460863),黑龙江省教育厅科学技术研究项目计划资助(12511003),黑龙江省自然科学基金资助项目(E201260) （20090460863）
