电力系统自动化2023，Vol.47Issue(24)：22-30,9.DOI:10.7500/AEPS20230525005
无相位量测的多环中压配电网线路参数辨识方法
Line Parameter Identification Method for Multi-ring Medium-voltage Distribution Network Based on Phaseless Measurement
摘要
Abstract
Accurate line parameter identification is an important foundation for refined regulation and protection setting of distribution networks.Due to the complex topology and variable power flow directions,ring distribution networks are difficult to apply the line parameter identification methods for traditional radial network.This paper proposes a line parameter identification method for multi-ring medium-voltage distribution network that does not require phase measurement data.To address the issue of unclear power flow direction in multi-ring distribution networks,a ring opening method based on power direction judgment and decomposition is proposed and extended to any ring distribution network.Based on the ring opening network,the linear correlation problem between equations at different time is analyzed,and a high-dimensional non-convex optimization model for solving line parameters is constructed.Subsequently,the genetic algorithm is used to identify line impedance and admittance.Finally,a honeycomb distribution network model is built in MATLAB for validation,and the results show that the proposed algorithm has higher accuracy and robustness compared with traditional least squares algorithm,particle swarm algorithm,and simulated annealing algorithm.关键词
线路参数辨识/中压配电网/蜂巢配电网/相位量测/遗传算法Key words
line parameter identification/medium-voltage distribution network/honeycomb distribution network/phase measurement/genetic algorithm引用本文复制引用
李博通,孙铭阳,陈晓龙,李斌,冀肖彤,肖繁..无相位量测的多环中压配电网线路参数辨识方法[J].电力系统自动化,2023,47(24):22-30,9.基金项目
国家电网公司科技项目(5400-202122573A-0-5-SF).This work is supported by State Grid Corporation of China(No.5400-202122573A-0-5-SF). （5400-202122573A-0-5-SF）
