Fast Protection for Collector Lines in Large-Scale Wind Farms Based on Random Matrix Theory  

作　　者：Hongchun Shu Xiaohan Jiang Pulin Cao Guangxue Wang Bo Yang 

机构地区：[1]Kunming University of Science and Technology,Kunming 650500,China

出　　处：《CSEE Journal of Power and Energy Systems》2023年第6期2156-2167,共12页中国电机工程学会电力与能源系统学报（英文）

基　　金：the National Natural Science Foundation of China(No.51807085,52037003);Key Science and Technology Project of Yunnan Province,China(202002AF080001)。

摘　　要：The impact of large-scale wind farms on power system stability should be carefully investigated,in which mal-functions usually exist in the collector line's relay protection.In order to solve this challenging problem,a novel time-domain protection scheme for collector lines,based on random matrix theory(RMT),is proposed in this paper.First,the collected currents are preprocessed to form time series data.Then,a real-time sliding time window is used to form a consecutive time series data matrix.Based on RMT,mean spectral radius(MSR)is used to analyze time series data characteristics after real-time calculations are performed.Case studies demonstrate that RMT is independent from fault locations and fault types.In particular,faulty and non-faulty collector lines can be accurately and efficiently identified compared with traditional protection schemes.

关 键 词：Collector lines random matrix theory time-domain protection wind farms 

分 类 号：TM862[电气工程—高电压与绝缘技术] TM614