基于FP-Growth算法的10 kV配电网串联补偿电容故障在线监测方法  

Online Monitoring Method for Series Compensation Capacitor Fault in 10 kV Distribution Network Based on FP-Growth Algorithm

作　　者：宋佳磊 金立军[1] Song Jialei;Jin Lijun(Tongji University, Shanghai 200092, China;State Grid Zhejiang Electric Power Co., Ltd., Wuyi Power Supply Branch, Jinhua Zhejiang 321000, China)

机构地区：[1]同济大学,上海200092 [2]国网浙江省电力有限公司武义县供电公司,浙江金华321000

出　　处：《电气自动化》2022年第1期41-43,共3页Electrical Automation

摘　　要：针对当前配电网串联补偿电容故障在线监测方法在故障特征点的提取过程中,对特征数据变化规律的挖掘力度较差,易造成角度特征识别与实际情况相差较大,导致补偿位置角度特征识别准确率较低的问题,提出基于FP-Growth算法的10 kV配电网串联补偿电容故障在线监测方法。根据10 kV配电网线路工况运行特征,识别10 kV配电网串联分路状态;利用FP-Growth算法拟合故障幅值包络曲线,对比故障曲线与正常曲线;根据曲线差异性,判断补偿电容故障位置,检验接收信号与故障位置特征参数的相关程度;得到有效采集数据,实现电容状态危险等级的监测。仿真试验结果表明,在不同的故障程度和道砟电阻条件下,角度特征识别准确率较高,判断结果更加可靠。Aiming at the present online monitoring method for the series compensation capacitor fault in the distribution network,in the process of extracting the fault feature points,the poor mining intensity of the feature data change law occurred,which is likely to cause the angle feature recognition to differ greatly from the actual situation,resulting in the compensation location angle feature recognition with low accuracy,an online monitoring method based on FP-Growth algorithm for series compensation capacitor faults in 10 kV distribution network was proposed.According to the line operation characteristics of 10 kV distribution network,the status of the 10 kV distribution network series shunt was identified;the FP-Growth algorithm was applied to fit the fault amplitude envelope curve so as to compare the fault curve with the normal curve;by means of the difference of the curve,the fault location of the compensation capacitor was determined and the correlation between the received signal and the characteristic parameters of the fault location was checked out,thus obtaining effective data collection and realizing the monitoring of the dangerous level of the capacitance state.The simulation experiment results show that under different fault levels and ballast resistance conditions,this method can realize high accurate angle feature recognition and very reliable judgment results.

关 键 词：FP-GROWTH算法 10 kV配电网 串联补偿电容 故障在线监测 道砟电阻 角度特征识别准确率 

分 类 号：TM72[电气工程—电力系统及自动化]