低压线路的阻抗计算及拓扑识别方法研究  

Research on Impedance Calculation and Topology Identification Method of Low Voltage Line

作　　者：严永辉 李新家[1] 周瑞雪 刘飞 吴甲 YAN Yonghui;LI Xinjia;ZHOU Ruixue;LIU Fei;WU Jia(Technical Department,Jiangsu Fangtian Electric Power Technology Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]江苏方天电力技术有限公司技术部,江苏南京211102

出　　处：《微型电脑应用》2022年第9期187-190,共4页Microcomputer Applications

摘　　要：由于目前方法在计算低压线路阻抗并对拓扑结构进行识别时没有融合电网营配数据,存在阻抗值计算结果均方根误差较大、拓扑识别结果精准度低、拓扑识别效率低的问题,提出低压线路的阻抗计算及拓扑识别方法,利用智能电表、低压线路监测终端和变压器监测终端等测量装置在配电台区获取无功功率、电压、有功功率和电流等多源数据,并对上述数据进行融合处理,计算低压线路对应的阻抗值,将计算得到的阻抗值作为特征值实现拓扑识别。实验结果表明,所提方法的阻抗值计算结果均方根误差小、拓扑识别结果精准度高、拓扑识别效率高。When the current method is used to calculate the impedance of low-voltage lines and identify the topology structure,the grid distribution data are not integrated,and there are problems of large root mean square error of impedance calculation results,low accuracy of topology recognition results,and low efficiency of topology recognition.Then impedance calculation and topology identification methods of low-voltage lines are proposed,and the measurement devices such as smart meters,low-voltage line monitoring terminals and transformer monitoring terminals are used to obtain multi-source data such as reactive power,voltage,active power and current in the distribution station area.The data are fused and processed,the impedance value corresponding to the low-voltage line is calculated,and the calculated impedance value is used as the characteristic value to realize topology recognition.The experimental results show that the impedance calculation result of the proposed method has a small root mean square error,high accuracy of topology recognition results,and high topology recognition efficiency.

关 键 词：低压线路 阻抗计算 数据融合 拓扑识别 特征提取 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]