基于数据驱动技术的配电网拓扑结构及线路参数识别方法  

Identification Method of Distribution Network Topology and Line Parameters Based on Data Driven Technology

作　　者：高骞 杨俊义 刘凯 金诚 于海波 GAO Qian;YANG Junyi;LIU Kai;JIN Cheng;YU Haibo(State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210024,China;State Grid Jiangsu Electric Power Company Limited Electric Power Economic Technology Research Institute,Nanjing 210018,China;Yangzhou Power Supply Branch of State Grid Jiangsu Electric Power Co.,Ltd.,Jiangsu Yangzhou 225000,China;Beijing Guodiantong Network Technology Co.,Ltd.,Beijing 100085,China)

机构地区：[1]国网江苏省电力有限公司,南京210024 [2]国网江苏省电力有限公司电力经济技术研究院,南京210018 [3]国网江苏省电力有限公司扬州供电分公司,江苏扬州225000 [4]北京国电通网络技术有限公司,北京100085

出　　处：《电力电容器与无功补偿》2023年第2期77-87,共11页Power Capacitor & Reactive Power Compensation

摘　　要：配电系统能量管理的优化需要掌控运行状态监测信息,需要对配电网拓扑结构及线路参数进行识别,然而,目前很多方法在识别过程中都要求用相量测量单元(phasor measurement unit,PMU)测量节点电压角,但这对于传统的配电网是不现实的。由此,本文提出了一种在不考虑电压相角信息的情况下进行线路拓扑辨识和参数估计的数值方法,第1步用数据驱动的回归方法对拓扑和线路参数进行初步估计;第2步采用数据和模型驱动的联合方法计算线路参数,恢复电压相角后进一步修正拓扑结构。最后通过算例表明,所提方法可以在不需要电压相角的情况下,在有限的测量样本基础上,准确估计出拓扑和线路参数。The optimization of energy management of distribution system needs to master the operation state monitoring information and identify the topology and line parameters of distribution network.However,many methods at present require to use phasor measurement unit(PMU)to measure the node voltage angle in the identification process,which is unrealistic for the traditional distribution network.Therefore,a kind of numerical method of line topology identification and parameter estimation without considering the voltage phase angle information is proposed in this paper.The first step is to use the data-driven regression method for preliminary estimation of topology and line parameters.The second step is to use the joint method of data-driven and model driven for line parameter calculation and,after recovery of the voltage angle,topology correction further.Finally,it is shown by the calculation that the proposed method can,in the case of not needing voltage phase angle and on the basis of limited measurement sample,accurately estimate topology and line parameters.

关 键 词：拓扑辨识 状态估计 配电网 智能电表 数据驱动 

分 类 号：TM73[电气工程—电力系统及自动化]