中国电机工程学报2017，Vol.37Issue(8)：2203-2214,12.DOI:10.13334/j.0258-8013.pcsee.160946
应对全站采样信息缺失的应急保护系统
Emergency Protection System Dealing With Sampling Information Loss Within a Whole Substation
摘要
Abstract
In a smart substation, the sampling system and GOOSE system are two independent information sampling and transmission systems. To deal with the problem that the substation must quit operation or only be equipped with the remote backup protection with low selectivity when sampling information within the whole substation is lost, an emergency protection system was proposed. Firstly, multi-terminal current differential protection or directional protection were utilized to recognize the rough fault area. Next, the measured reactance percentage comparison method and the compensation voltage phasor deduction comparison method were put forward to recognize the exact fault area for double or more terminal system respectively. Acomprehensive emergency protection scheme combining the zone I distance protection was proposed. Theoretical analysis and simulation test results show that the emergency protection scheme are with good reliability and sensitivity, and can provide adequate protection against the impact of fault resistance, which can effectively ensure the safe operation of the substation occurring serious sampling abnormality and the regional power grid.关键词
全站采样信息缺失/应急保护/补偿电压相量/测量电抗/电流差动保护Key words
sampling information loss within a whole substation/emergency protection/compensation voltage phasor/measured reactance/current differential protection分类
信息技术与安全科学引用本文复制引用
金能,李正天,林湘宁,魏繁荣,陈乐,余梦琪,薄志谦,黄景光,Muhammad Shoaib Khalid..应对全站采样信息缺失的应急保护系统[J].中国电机工程学报,2017,37(8):2203-2214,12.基金项目
国家电网公司科技项目适应变电站–网架形态演变趋势的新架构保护关键技术研究与开发 （）
国家自然科学基金项目(5157707, 51477090). Project Supported by the Science and Technology Project of State Grid Corporation of China （5157707, 51477090）
Project Supported by National Natural Science Foundation of China (5157707, 51477090). （5157707, 51477090）
