一种能适应弱环网的改进配电网支路电流状态估计算法  

A Revised Branch-Current-Based State Estimation Method for Weak Looped Distribution Network

作　　者：张占龙 马海涛 施伟成 高亚静[2] 王谦 赵肖旭 

机构地区：[1]国网江苏省电力公司镇江供电公司,江苏镇江212000 [2]华北电力大学新能源电力系统国家重点实验室,河北保定071003

出　　处：《中国电力》2015年第8期61-66,共6页Electric Power

基　　金：国家自然科学基金资助项目(51177047);清华大学电力系统国家重点实验室资助项目(SKLD14KM02)~~

摘　　要：随着配电网自动化的发展,配电管理系统的研究已经成为热点问题,而配电网状态估计无疑是其非常重要的一环。研究如何使这些状态估计算法能够应用于环网配电网中具有重要的实际意义。通过环网节点分裂,将环网配电网等效成为辐射状配电网;基于潮流计算给分裂节点添加负荷伪量测,从而满足进行配电网状态估计的可观性要求。基于这些处理,环网配电网的状态估计等效成为辐射状配电网状态估计。算例表明了该方法的合理性和有效性。该方法只需在原算法程序上稍作改动即可实现,具有良好的实际应用价值。Along with the development of distribution-network automation, the distribution system management has become a hot spot for study, and the state estimation of distribution network is a very important part of the study. In this paper, the meshed distribution network is changed to a radial distribution network by splitting the node in the loop. In order to satisfy the observable condition for distribution state estimation, a couple of load peso-measurements are added to the split nodes, which are obtained through the power flow calculation. Based on above-mentioned processing, the state estimation for meshed network is converted to the state estimation for radial distribution network. Numerical analysis has proved the rationality and effectiveness of this method, which can be realized by partly modifying the original algorithm program of the current-based state estimation, and thus has a good practical application value.

关 键 词：环网配电网 分裂环网节点 状态估计 

分 类 号：TM76[电气工程—电力系统及自动化]