基于改进时域反演算法的含DG辐射状配电网典型故障区段定位方法  

Typical Fault Section Location Method in Radial Distribution Network with DG Based on Improved Time Domain Inversion Algorithm

作　　者：刘艾旺 黄洁 钱锋强 LIU Aiwang;HUANG Jie;QIAN Fengqiang(Haiyan County Power Supply Company of State Grid Zhejiang Electric Power Co.,Ltd.,Jiaxing 314300,China)

机构地区：[1]国网浙江省电力有限公司海盐县供电公司,浙江嘉兴314300

出　　处：《微型电脑应用》2025年第2期186-190,共5页Microcomputer Applications

摘　　要：受配电网结构复杂性影响,配电网发生故障的次数逐渐增加,为此研究基于改进时域反演算法的含分布式电源(DG)辐射状配电网典型故障区段定位方法。依据波动理论,在三相配电网中设定分布参数,建立配电网接地故障方程。以线路时间差为基础,通过D型行波法划分配电网故障信号区间。结合反射关系改进时域反演算法,在镜像原理的作用下,将故障信号作为反射波源,定位配电网故障区段。实验结果表明,以1515 kHz为采集频率,所提方法能够准确地找出故障区段,具有应用前景。Due to the complexity of distribution network structure,the number of faults in distribution network is increasing gradually.Thus,a method based on improved time domain inversion for typical fault section location in radial distribution network with distributed generation(DG)is studied.According to the wave theory,the distribution parameters are set in the three-phase distribution network,and the distribution network grounding fault equation is established.Based on the time difference of lines,the fault signal interval of distribution network is divided by D-type traveling wave method.Combined with the reflection relation,the time domain inversion algorithm is improved,and the fault signal is used as the reflection wave source to locate the fault section of the distribution network under the function of the mirror principle.The experimental results show that when 1515 kHz is used as the acquisition frequency,the proposed method can fined out the fault section accurately,which has application prospects.

关 键 词：典型故障 配电网 改进时域反演算法 DG辐射状 定位方法 

分 类 号：TN801[电子电信—信息与通信工程]