含分布式电源的弱环配电网络潮流计算  

Power flow method for weakly meshed distribution network with distributed generation

作　　者：代江[1] 王韶[1] 祝金锋[1] 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学电气工程学院),重庆400044

出　　处：《电力系统保护与控制》2011年第10期37-41,46,共6页Power System Protection and Control

基　　金：输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709212);国家'111'计划项目(B08036)

摘　　要：分布式电源的接入对配电网络安全运行产生很大影响,提出一种能处理各种分布式电源和弱环网的配电网改进潮流计算方法。该方法利用配电系统弱环网特点,采用前推回代法和回路电流法求解弱环配电网潮流。在基于几种常见分布式电源运行方式和控制特点基础上,建立各种分布式电源在潮流计算中的节点模型。在处理PV节点类型分布式电源时,运用基于灵敏度阻抗矩阵的无功补偿量计算方法。采用该方法在33节点配电系统中进行仿真计算,仿真结果表明该方法是可行的和有效的。After the distributed generation（DG）is connected to distribution system,there is a great impact on the security and operation of the system.A modified method is presentd to calculate power flow of distribution network with multi-type DGs and weakly meshed distribution network.In view of the characteristics of weakly meshed distribution network,the method calculates power flow of weakly meshed distribution network with back/forward sweep algorithm and loop current algorithm.Based on the analysis of operation mode and control characteristics of several usual DGs,their node models in power flow calculation are established.During handling DG units in PV node,the calculation method of reactive power compensation based on the sensitivity impedance matrix is applied.The simulation of a 33-bus test system is carried out.Simulation results show that the method is feasible and effective.

关 键 词：分布式电源 弱环配电网络 潮流计算 节点模型 灵敏度阻抗矩阵 

分 类 号：TM744[电气工程—电力系统及自动化]