基于支路开断分布因子的线路状态脆弱性研究
摘要:脆弱性反应了电力系统故障发生时抵御连锁故障的能力。电力系统N－1后发生潮流转移，系统潮流重新分配使得系统网架部分线路潮流突然增大，可能导致连锁故障和大面积停电情况的发生，如何预防电力系统线路在N－1后可能发生连锁故障的情况显得十分必要。从脆弱性角度出发，对电力系统线路进行脆弱性分析。首先计算得到各条支路的开断分布因子，在此基础上提出线路状态脆弱性指标和计算方法，得到各条支路的状态脆弱性评估结果，从数值上直观分析某条线路承受故障的能力和该线路开断对其他线路潮流的影响。最后以IEEE-39节点系统为例，通过计算各条支路的状态脆弱性指标，验证该方法的可行性以及对预防连锁故障的指导意义。
Abstract：Vulnerability reflects the ability to withstand cascading failures in the event of a power system failure. The power flow occurs after the power system N－1, and the system power flow redistribution increases the power flow of the system grid part, which may lead to cascading failure and large-area power outages. How to prevent the cascading failure of the system line after N－1 is necessary. From the perspective of vulnerability, this paper analyzes the vulnerability of power system lines; first of all, calculates the outage distribution factor of each branch. Based on this, the line state vulnerability index and calculation method are proposed, and the state vulnerability assessment results of each branch are obtained. Then, this paper visually analyzes the ability of a line to withstand faults and the impact of the line breaking on other line currents. Finally, the IEEE-39 node system is taken as an example to verify the feasibility of the method and the guiding significance of preventing cascading failure by calculating the state vulnerability index of each branch.
标题：基于支路开断分布因子的线路状态脆弱性研究
title:Line State Vulnerability Based on Line Outage Distribution Factor
作者：陈益超, 林涛, 程军照, 毕如玉, 李水天
authors:CHEN Yichao, LIN Tao, CHENG Junzhao, BI Ruyu, LI Shuitian
关键词：电力系统,N－1,支路开断分布因子,状态脆弱性,
keywords:power system,N－1,line outage distribution factor,state vulnerability,
发表日期：2018-12-30
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