基于风险理论的输电系统连锁故障脆弱性分析  

Vulnerability Analysis of Cascading Failures in Transmission System Based on Risk Theory

作　　者：方玉河 陶汉涛[1,2,3] 张磊 王钊 姜志博[1,2,3] 吴大伟 Fang Yuhe;Tao Hantao;Zhang Lei;Wang Zhao;Jiang Zhibo;Wu Dawei(NARI Group Co.,Ltd Nanjing Jiangsu 211106,China;Wuhan NARI Electric Power Research Institute,Wuhan Hubei 430074,China;Hubei Key Laboratory of Lightning Risk Prevention for Power Grid,Wuhan Hubei 430074,China)

机构地区：[1]南瑞集团有限公司,江苏南京211106 [2]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [3]电网雷击风险预防湖北省重点实验室,湖北武汉430074

出　　处：《电气自动化》2022年第2期38-40,共3页Electrical Automation

基　　金：国家自然科学基金项目资助(11601125)。

摘　　要：对风险理论和复杂网络理论进行了分析,构建得到一种可以对输电系统连锁故障进行脆弱性评价的方法。系统上半区域的发电机出力与系统发电机总出力相比达到了近80%。风险理论脆弱性评估方法克服了传统方式需要从局部状态下对电网脆弱性进行评价的缺陷,使线路辨识精度与效率都获得了明显提升。整体脆弱性结果分析表明当系统负荷比值增大后,指标也发生了提高,且提高了输电系统连锁故障搜索效率,具有较好的工程可行性。Based on the analysis of risk theory and complex network theory,a vulnerability assessment method for cascading failures of transmission system was constructed.The output of the generator in the upper half of the system reached nearly 80%compared with the total output of the system generators.The vulnerability assessment method of risk theory overcame the shortcomings of the traditional methods that need to evaluate the vulnerability of power grid from the local state,and significantly improved the accuracy and efficiency of line identification.The analysis of the overall vulnerability results shows that when the system load ratio increases,the index also increases,and the efficiency of searching for cascading failures of the transmission system is improved,which has a good engineering feasibility.

关 键 词：输电系统 连锁故障 负荷 网架 

分 类 号：TM72[电气工程—电力系统及自动化]