一种基于连锁过载跳闸模式的电网脆弱支路识别算法研究  

An Algorithm for Identifying Vulnerability Branches in Power Network Based on Cascading Overload Tripping Mode Due to Overload

作　　者：邓慧琼[1] 张颖 

机构地区：[1]福建工程学院信息科学与工程学院,福州省福州市350108 [2]唐山市曹妃甸区职业技术学院,河北省唐山市063200

出　　处：《智能电网》2015年第4期283-287,共5页Smart Grid

基　　金：福建省教育厅项目(JB13143);福建工程学院科研项目(GY-Z13104)

摘　　要：针对电网的连锁过载跳闸现象产生的脆弱性,提出一套识别电网中脆弱支路集合的算法。首先通过对初始故障在故障传播过程中的表现行为进行分析,给出评价初始故障支路脆弱性的指标,并提出用以分析初始故障支路脆弱性的基本结构和算法,然后在此基础上对基本分析结构和算法进行扩展,建立分层分析结构和综合分析结构,使得对初始故障支路的脆弱性分析更加灵活全面。所提出的分析结构和算法提供一种比较规范的分析初始故障支路脆弱性的形式,并可方便用来识别电网中的脆弱支路环节。最后通过IEEE 39节点系统上的算例对该算法的操作和合理性进行进一步的说明。ABSTRACT:Aiming at the vulnerability caused by cascading overload tripping phenomenon in the power network, an algorithm for identifying the vulnerable branches in power network is proposed. Firstly, by analyzing the behaviors of the initial failure in the process of fault propagation, a set of indexes for evaluating the vulnerability of the initial fault branches is proposed, and a basic structure and algorithm for analyzing the vulnerability of the initial fault branches are proposed. And then on this basis, the basic structure and algorithm is extended to a stratified analysis structure and a comprehensive analysis structure, which makes the analysis on the vulnerability of the initial fault branches more flexible and comprehensive. The proposed analysis structure and algorithm can provide a more normative form for analyzing the vulnerability of the initial fault branches, and can be easily used to identify the vulnerable parts composed of some initial fault branches. Some examples in IEEE 39 node system demonstrates the operation process of the algorithm and verifies its rationality.

关 键 词：电力系统 连锁故障 连锁过载 脆弱性 聚类算法 

分 类 号：TM73[电气工程—电力系统及自动化]