微机型短线路保护原理及通信编码方案  

Microprocessor Based Protection Theory and Communication Code of Short Line

作　　者：伍叶凯[1] 郁惟镛[1] 

机构地区：[1]上海交通大学电力学院,上海200030

出　　处：《上海交通大学学报》1999年第12期1529-1532,共4页Journal of Shanghai Jiaotong University

摘　　要：提出了一种适用于５００ ｋＶ 及以下的微机型短距离输电线路保护方案，包括分相式电流差动、零序电流差动、三段式相间距离、三段式接地距离保护以及综合重合闸等功能．分析了保护原理和通信编码技术，介绍了硬件配置及试验结果．该方案具有同步调整简单可靠，对通道误码率要求低，对故障类型具有自适应能力等优点．在不同故障时保护的性能均最优．A protection theory for short transmission lines was proposed,including phase segregated current differential,zero sequence current differential,three zone phase to phase distance,three zone earth distance and auto reclose.The principle and communication code were analyzed.The scheme has perfect performance at any type of fault because it is simple and reliable in synchronous adjust,less influenced by mis coding rate of channels and adaptable to various fault types.

关 键 词：电力系统 继电保护 通信编码 短距离输电线路 

分 类 号：TM773[电气工程—电力系统及自动化]