基于多方式电网断面的输电网络参数估计  

Parameter Estimation of Power Transmission Network Based on Multi-Cases of Power Flow Operating Conditions

作　　者：吴昊[1] 闫文瑾[2] 何桦[3] 

机构地区：[1]安徽电力调度通信中心,安徽省合肥市230061 [2]东南大学电气工程学院,江苏省南京市210096 [3]南京南瑞继保电气有限公司,江苏省南京市211100

出　　处：《电网技术》2009年第18期89-92,共4页Power System Technology

摘　　要：研究了基于多方式断面的输电网络参数估计方法,将电网断面分为滤波断面和方式断面,分析了如何利用多方式电网断面进行参数估计,得出了电网环路测量估计方程和电网支路测量估计方程,结合多个不同方式的电网断面,可实现错误参数的准确定位及估计。在New-England 39节点系统上对该算法进行了测试,结果表明该方法可实现输电网络参数全估计。A method to estimate parameters of power transmission network based on multi-cases of power flow opearting conditions is designed. In this paper, the cases are divided into two types, i.e., filtering conditions and operating conditions. How to utilize multi-cases of power flow opearting conditions for parameter estimation is analyzed. One kind of loop measurement estimation equations based on SCADA and two kinds of branch measurement estimation equations, in which one kind is based on SCADA and the other kind is based on PMU, are obtained. Combining with multi different cases of power flow opearting conditions, parameter errors can be accurately identified and estimated by above- mentioned three kinds of equations. The proposed method is tested by New-England 29-bus system, and test results show that the overall parameter estimation of transmission network can be implemented by the proposed method.

关 键 词：参数估计 监视控制与数据采集(SCADA) 同步相角测量单元(PMU) 多方式电网断面 

分 类 号：TM734[电气工程—电力系统及自动化]