广东电力Issue(8)：42-45,4.DOI:10.3969/j.issn.1007-290X.2014.08.010
T区充电时母差保护后备段误跳正常母线的应对措施
Solutions to False Trip of Backup Section of Busbar Differential Protection on Normal Busbar when T Area Charging
何祥针 1刘嘉宁 1陈扬1
作者信息
- 1. 广东电网电力调度控制中心，广东 广州 510600
- 折叠
摘要
Abstract
When one section of 220 kV double busbar happening fault,it is necessary to conduct T area charging for line spac-ing of fault busbar or main transformer interval in order to remove fault point and realize electricity restore of corresponding spacing on normal busbar. When T area is charging and fault exists,there is risk of false trip of backup section of busbar dif-ferential protection on normal busbar. Therefore,it requires to quit relevant busbar differential protection,but if two sets of busbar differential protection quit at the same time,it is about to result in no main protection running of busbar in substa-tion. By analyzing various typed busbar differential protection in Guangdong power grid at present,solutions to accident handling for avoiding risk of busbar differential protection quit were proposed which greatly improved safety and stability of power system and proved feasibility and reliability of these accident treatment measures.关键词
母差保护/线路间隔/母线故障/电网调度Key words
busbar differential protection/line spacing/busbar fault/power grid dispatching分类
信息技术与安全科学引用本文复制引用
何祥针,刘嘉宁,陈扬..T区充电时母差保护后备段误跳正常母线的应对措施[J].广东电力,2014,(8):42-45,4.
