南方电网技术2024，Vol.18Issue(12)：42-50,9.DOI:10.13648/j.cnki.issn1674-0629.2024.12.006
含有限PMU的配电网故障区域在线辨识算法
Fault Section On-Line Identification Algorithm with Limited PMU for Distribution Network
摘要
Abstract
In order to realize fast fault section identification in distribution network with limited synchronous phase measurement unit(PMU)layout,an on-line fault section identification algorithm for distribution network with low PMU number dependence is studied.The PMU layout and area division principles are proposed,and the differences in the three-phase current between the normal area and the faulted area before and after the fault occurrence are analyzed.A multi-dimensional spatial and temporal state monitor-ing matrix is constructed using the collected current data,and a 2-parametric-based spectral parametric ratio coefficient is defined for dimensionality reduction of the multi-dimensional state monitoring matrix to quantify the differences in electrical state changes before and after the fault in each area,so as to achieve fast and accurate on-line fault location in the distribution network.In this paper,the effectiveness of the proposed method is verified by using IEEE 33-node distribution simulation system and 6-node actual test platform.The simulation results and actual test results show that the proposed method is less affected by the fault type,neutral grounding mode,and transition resistance under the limited PMU measurement information,and has certain noise immunity.The proposed method can quickly and accurately identify fault sections in the distribution network even in the case of asynchronous communication.关键词
配电网/谱范数/相量测量装置/故障区域辨识Key words
distribution network/spectral parametric number/phasor measurement unit(PMU)/fault section identification分类
信息技术与安全科学引用本文复制引用
王彩强,张青,李晨,黄志勇,梁财源,何思名..含有限PMU的配电网故障区域在线辨识算法[J].南方电网技术,2024,18(12):42-50,9.基金项目
国家自然科学基金资助项目"智能配电网系统源-网-荷形态特征演变分析及协调规划理论"(U1866207) （U1866207）
中国南方电网有限责任公司科技项目(035300KK52210015(GDKJXM20210054)).Supported by the National Natural Science Foundation of China(U1866207) （035300KK52210015(GDKJXM20210054）
the Science and Technology Projects of China Southern Power Grid Co.,Ltd.(035300KK52210015(GDKJXM20210054)). （035300KK52210015(GDKJXM20210054）
