一种利用故障网络求解功率分布的方法  

A Method to Solve Power Distribution by Faulty Network

作　　者：张浩[1] 卢继平[1] 汪洋[1] 孔令云[2] 韩涛[1] 乔梁[1] 丁然[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),重庆市沙坪坝区400044 [2]广东省电力设计研究院,广东省广州市510663

出　　处：《电网技术》2010年第9期54-59,共6页Power System Technology

基　　金：国家重点基础研究发展计划项目(973项目)(2004CB-217908)~~

摘　　要：对于电网切除故障线路后的功率分布问题,现有的研究方法多数都是基于使故障线路切除后的网络潮流由发散变为收敛,恢复潮流解后才能得知故障后的功率分布情况。但这些方法都以恢复潮流解为前提,具有一定的滞后性,不适用于在线紧急控制。提出一种基于同步相量测量装置对线路故障中状态进行测量求取实时网络结构参数,再利用所得参数求解线路故障切除后功率分布的方法。此方法具有简捷、快速和准确的特点,并通过算例验证了其可行性。To solve power distribution..in power network where the faulty line was cut off, most of the methods given by the reported researches are firstly to make the divergent power flow of the post-fault power network becoming convergent, then to obtain the post-fault power distribution after the solution of power flow is recovered. These methods are based on the presupposition of recovering power flow solution, so they possess time lag more or less and are not suitable to on-line emergency control. For this reason, a new method to solve post-fault power distribution is proposed： firstly, by means of measuring the operation state of power network during the fault by phasor measurement units （PMU）, the real-time structural parameters of power network are obtained; then the power distribution after the cutting-off of faulty line is solved by the obtained parameters. The proposed method is simple, rapid and accurate. The feasibility of the proposed method is verified by the results of calculation example.

关 键 词：故障网络 网络结构参数 功率分布 相量测量 

分 类 号：TM712[电气工程—电力系统及自动化]