基于锥规划的配电网故障定位算法设计研究  

Research on the design of fault location algorithm for distribution network based on cone planning

作　　者：熊茜 金鑫琨 何子君 XIONG Qian;JIN Xinkun;HE Zijun(State GridChengdou Power Supply Company,Chengdou 610000,China)

机构地区：[1]国网四川省电力公司成都供电公司,成都610000

出　　处：《自动化与仪器仪表》2024年第5期74-78,共5页Automation & Instrumentation

摘　　要：配电网故障定位是确保稳定运行的关键。为此,研究提出了一种基于锥规划的故障定位算法。首先,验证了克拉克电流差值作为故障判据的可行性;接着,构建了区段关联矩阵与克拉克电流-量测关联矩阵,并针对其不足,进一步建立了锥规划模型进行优化。使用辐射状单电源模型和IEEE33节点系统进行仿真分析,结果显示该算法能够检测所有故障类型。在12组不同的故障组别测试中,研究均实现了准确定位。经过三种故障测试,所提出的算法的准确率平均为95%,明显优于其他算法。在耗时上,虽然增量极限学习机算法稍胜一筹,但两者的差异微小,均在0.5 s内,可以发现研究所提出的算法具有高效性和准确性。Distribution network fault localisation is the key to ensure stable operation.For this reason,the study proposes a fault location algorithm based on cone planning.Firstly,the feasibility of Clark’s current difference as a fault criterion is verified;then,the zone correlation matrix and Clark's current-measurement correlation matrix are constructed,and the cone-planning model is further optimised to address its deficiencies.Simulation analyses using a radial single-supply model and an IEEE33 node system show that the algorithm is capable of detecting all fault types.The study achieved accurate localisation in all 12 different fault group tests.After three fault tests,the accuracy of the proposed algorithm is 95%on average,which is significantly better than other algorithms.In terms of time consumption,although the IELM algorithm is slightly better,the difference between the two is tiny,both within 0.5 seconds,and the proposed algorithm of the study can be found to be efficient and accurate.

关 键 词：配电网 故障定位 克拉克电流 锤规划 辐射状单电源 

分 类 号：TM771[电气工程—电力系统及自动化] TP274[自动化与计算机技术—检测技术与自动化装置]