基于PV节点分布式电源的弱环网潮流计算  

Power Flow Method for Weakly Meshed Distribution Network with Distributed Generation

作　　者：于雷[1] 王立地[1] 纪建伟[1] 裴勇[2] 

机构地区：[1]沈阳农业大学信息与电气工程学院,沈阳110161 [2]鞍山市粮食科学研究所,辽宁鞍山114048

出　　处：《沈阳农业大学学报》2013年第3期373-376,共4页Journal of Shenyang Agricultural University

基　　金：辽宁省自然科学基金项目(201202191)

摘　　要：针对分布式电源的并入对弱环网配电网络安全运行产生很大影响的问题,采用一种改进的前推回代法实现其并入后潮流有效计算。该算法一方面应用叠加原理和前推回代法相结合解决配电网中的弱环网问题;另一方面提出对PV型分布式电源的并入进行无功补偿修正,通过对PV节点无功功率的调节来改变电压,注入一定的电流,实现PV节点在无功功率没有越界的情况下电压幅值能够达到设定值。采用该算法在33节点配电系统中,应用Vc++6.0软件进行仿真计算,结果表明该算法的电压幅值高于其他算法,说明该算法有效可行。The incorporation of distributed generation has a huge impact on the safe operation of the weakly looped distribution network, which could deduce a kind of modified forward - backward sweep method for effective computation of the incorporated trend. On one hand, the algorithm could solve the weakly looped network problem of distribution network through the application of combining the super position principle and forward - backward sweep method. On the other hand, the algorithm proposed the reactive power compensation correction towards the incorporation of PV-type distributed generation, which could make voltage amplitude of PV code reach the set value in the case of without crossing the boundary for reactive power through adjusting PV node reactive power to change the voltage and then achieving the injection of a certain electric current. According to apply VC ＋ ＋6.0 software in the 33-node distribution system with the adoption of the algorithm to conduct the simulation calculation, the result shows that the voltage amplitude of the algorithm is higher than that of other algorithms ,and illustrates the algorithm is effective and feasible.

关 键 词：分布式电源 弱环配电网 PV节点 前推回代法 

分 类 号：TM743[电气工程—电力系统及自动化]