• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2019, Vol. 40 ›› Issue (7): 85-90.doi: 10.3969/j.issn.1000-7229.2019.07.011

• 智能电网 • 上一篇    下一篇

基于综合重要度的电网关键线路辨识方法

徐岩1,雷小双1,秦彬1, 杨慧1,罗琨2,刘丽2   

  1. 1.新能源电力系统国家重点实验室(华北电力大学),河北省保定市 071003;2.贵州电网有限责任公司毕节供电局,贵州省毕节市 551700
  • 出版日期:2019-07-01
  • 作者简介:徐岩(1976),男,副教授,从事新能源、电力系统继电保护等方面的研究工作; 雷小双(1994),男,硕士研究生,从事电力系统继电保护等方面的研究工作; 秦彬(1994),男,硕士研究生,从事电力系统状态检修等方面的研究工作; 杨慧(1995),女,硕士研究生,从事直流配电网故障特性分析等研究工作; 罗琨(1984),男,工程师,从事电力系统继电保护整定计算等研究工作; 刘丽(1986),女,工程师,从事继电保护运行管理等研究工作。
  • 基金资助:
    国家重点研发计划(2016YFB0900203)

Method Based on Comprehensive Importance for Critical Line Identification in A Power Grid

XU Yan1, LEI Xiaoshuang1, QIN Bin1, YANG Hui1, LUO Kun2, LIU Li2   

  1. 1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University), Baoding 071003, Hebei Province, China; 2. Bijie Power Supply Bureau of Guizhou Power Grid, Bijie 551700, Guizhou Province, China
  • Online:2019-07-01
  • Supported by:
    This work is supported by the National Key Research and Development Program of China (No. 2016YFB0900203).

摘要: 更加精准快速识别出电网关键线路,对提高电网运行的稳定程度以及预防电网连锁故障具有重要意义。文章首先基于复杂网络理论提出改进潮流介数指标,从结构角度判别系统受到功率扰动后线路的脆弱程度;然后基于熵理论,提出计及线路负载率的加权潮流转移熵指标,克服原有指标中只考虑转移潮流分布均匀性的不足;最后建立包括以上2种指标的综合重要度评估指标,更加全面地衡量线路在电力系统中的重要程度。通过对IEEE 39节点系统进行仿真,得出了不同攻击方式下系统的改进网络传输效率变化曲线图,证明了综合重要度指标的有效性,对预防电力系统连锁故障具有重要意义。

关键词: 连锁故障, 潮流介数, 加权潮流转移熵, 综合重要度

Abstract: More accurate and rapid identification of the key lines of power grid is of great significance to improve the stability of the power grid operation and prevent cascading failure of power grid. Firstly, on the basis of the complex network theory, the improved flow betweenness index is proposed to judge the vulnerability of the branch from the structural point of view after the power disturbance. Then, on the basis of the entropy theory, the weighted flow transfer entropy index considering the load rate of the branch is proposed, which overcomes the shortcomings of the original indicator only considering the uniformity of the transfer flow distribution. Finally, the comprehensive importance assessment index including above two indicators is established to more comprehensively measure the importance of the branch in the power system. Through the simulation, the improved network transmission efficiency curve of the system under different attack modes is obtained. The effectiveness of the method is proved by the simulation of IEEE 39-node system, which is of great significance to prevent the cascading failure of power system.

Key words: the cascading failure, improved flow betweenness, weighted flow transfer entropy, comprehensive importance index

中图分类号: