全球能源互联网2025，Vol.8Issue(3)：386-397,12.DOI:10.19705/j.cnki.issn2096-5125.2025.03.014
一种基于就地信息的全流程中压配电线路保护方案
A Full-process Medium-voltage Distribution Line Protection Scheme Based on Local Information
摘要
Abstract
In this paper,a full-process medium-voltage distribution line protection scheme based on local information is proposed.Under the condition of not relying on communication,the new protection scheme utilizes spatio-temporal dual-dimensional signatures and achieves rapid and selective isolation of short-circuit faults from both ends of the fault based on the power frequency electrical quantity characteristics of the circuit breaker on one side of the fault line after the circuit breaker on the other side trips,differentiating from traditional protection schemes that only utilize disturbance signal signatures caused by faults.Furthermore,the protection scheme optimizes the control of the tie switch by distinguishing between transient and permanent faults,ensuring that the switch does not reclose in case of permanent faults,thereby reducing the impact on the distribution system during the fault self-healing process in traditional automation schemes.At the same time,faults are isolated from both ends,this protection scheme also creates a basis for the restoration of power supply to the un-faulted sections.Through the analysis of the spatio-temporal characteristics of the local electrical signal,the protection scheme can achieve short-circuit fault isolation without substation outgoing switch tripping;It does not rely on communication and master station,and achieves automatic fault isolation and automatic restoration of power supply in un-faulted areas for both permanent and transient faults.Furthermore,the protection scheme further optimizes the control of the contact switch by judging transient faults and permanent faults.关键词
配电自愈/继电保护/配电自动化/供电可靠性Key words
self-healing of power distribution/protective relay/distribution automation/power supply reliability分类
动力与电气工程引用本文复制引用
张振宇,蔡智萍,夏雨,罗翔,张梅,文彪..一种基于就地信息的全流程中压配电线路保护方案[J].全球能源互联网,2025,8(3):386-397,12.基金项目
国网福建省电力有限公司科技项目(52130423004J). Science and Technology Project of State Grid Fujian Electric Power Co.,Ltd.(52130423004J). （52130423004J）
