线路重要度区分下的电力系统脆弱线路辨识  

Identification of Fragile Power Lines in Power Systems under the Differentiation of Line Importance

作　　者：江雄 陈超 姚昱豪 石健 JIANG Xiong;CHEN Chao;YAO Yuhao;SHI Jian(Southern Power Grid Digital Enterprise Technology(Guangdong)Company Limited,Huangpu Guangdong 510700,China;China Southern Power Grid Company Limited,Guangzhou Guangdong 510080,China)

机构地区：[1]南方电网数字企业科技(广东)有限公司,广东黄埔510700 [2]中国南方电网有限责任公司,广州510080

出　　处：《自动化与仪器仪表》2024年第7期172-175,共4页Automation & Instrumentation

基　　金：南方电网数字企业科技(广东)有限公司项目(01ZY20008)。

摘　　要：电力系统实际运行中可能受到负荷变化、故障发生、天气变化等各种因素的影响,这些因素导致电力网络间的大范围互联会使小范围内的故障很快传到大范围甚至于整个电力网,,脆弱线路辨识的过程中,传统方法针对线路引入了带权重线路介数指标,形成了脆弱线路辨识流程,但是这种方法没有区分不同线路的重要程度,导致路线辨识存在误差。为此,提出基于混合蛙跳算法的电力系统脆弱线路辨识方法研究。通过直流潮流算法对电力系统中的非重要线路和重要线路进行识别和区分,将重要线路进行进一步脆弱性分析,确定脆弱指标后,建立电力系统脆弱线路辨识模型;利用混合蛙跳算法的更新迭代功能求解该模型,搜索模型的最优解,以此实现电力系统脆弱线路的有效辨识。实验结果表明,所提方法在避免局部最优的同时,有效提高了脆弱线路辨识的精度和效率。In the actual operation of the power system,it may be affected by various factors such as load changes,fault occurrence,weather changes,etc.These factors lead to large-scale interconnection between power networks,which can quickly spread small-scale faults to the entire power network.In the process of identifying fragile lines,traditional methods have introduced weighted line intermediate index for the lines,forming a fragile line identification process,However,this method does not distinguish the importance of different lines,resulting in errors in route identification.Therefore,a hybrid frog jump algorithm based fragile line identification method for power systems is proposed.Identify and distinguish non important and important lines in the power system through the DC power flow algorithm,conduct further vulnerability analysis on important lines,determine vulnerability indicators,and establish a power system fragile line identification model;Using the update iteration function of the hybrid frog jump algorithm to solve the model,search for the optimal solution of the model,and thus achieve effective identification of vulnerable lines in the power system.The experimental results show that the proposed method effectively improves the accuracy and efficiency of fragile line identification while avoiding local optima.

关 键 词：脆弱线路辨识 直流潮流算法 脆弱指标 混合蛙跳算法 

分 类 号：TM711[电气工程—电力系统及自动化]