N-k故障下影响电力系统脆弱性的关键线路研究

发布时间：2018-02-14 13:32

本文关键词： 协同效应电力系统脆弱性关键线路最小失负荷率分区划分法　出处：《电力自动化设备》2015年03期 　论文类型：期刊论文

【摘要】：为研究N-k故障下导致电力系统脆弱性恶化的关键线路,提出一种构建关键线路模型的方法。基于脆弱性概念和复杂网络脆弱性理论,以电力系统最小失负荷率来表示电力网络的实际传输效率,建立电力系统脆弱性模型;基于协同破坏效应理论,结合N-k故障下故障集的脆弱性,建立故障情况下影响电力系统脆弱性的关键线路模型;考虑系统中两两相邻线路可能具有相似的特点,提出基于分区划分法的分析流程。IEEE 39节点系统算例仿真结果表明,所提模型和方法能够有效筛选故障集的数目,并得出高脆弱线路具有低协同破坏效应、高关键线路具有高协同破坏效应和低脆弱性的结论。
[Abstract]:In order to study the critical circuit which leads to the deterioration of power system vulnerability under N-k fault, a method to construct the critical circuit model is proposed, which is based on the concept of vulnerability and the theory of complex network vulnerability. The actual transmission efficiency of power network is represented by the minimum load loss rate of power system, and a vulnerability model of power system is established, which is based on the theory of cooperative failure effect and the vulnerability of fault set under N-k fault. The critical circuit model which affects the vulnerability of power system under the condition of fault is established, and considering the similar characteristics of the two adjacent circuits in the system, an analysis flow based on partition method is proposed. The simulation results of IEEE 39-bus system show that, The proposed model and method can effectively screen the number of fault sets and draw the conclusion that high fragile lines have low cooperative failure effect and high critical lines have high cooperative failure effect and low vulnerability.
【作者单位】：东南大学电气工程学院;国网江苏省电力公司电力科学研究院;
【基金】：国家电网公司千人计划项目~~
【分类号】：TM711

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