微机短线路光纤纵差保护的研究  

Study of microcomputer vertical contact differential protection of short power lines

作　　者：刘一江[1] 阎子勤 易理刚 车卫红 

机构地区：[1]湖南大学,湖南长沙410082 [2]湖南轻工业专科学校 [3]长沙同德科技实业有限公司 [4]长沙市电业局,湖南长沙410007

出　　处：《光纤与电缆及其应用技术》1999年第6期32-36,共5页Optical Fiber & Electric Cable and Their Applications

摘　　要：本文所介绍的微机短线路纵差保护方法，适用于３５ｋＶ 及以下的短距离输电线路。方案所配备的纵联差动保护采用分相差动保护原理，以相电流差突变量作为起动元件，差动元件采用全周付氏算法，计算出电流量的实部和虚部，再对两侧的电流相量进行比较，以确定是否在区内，在方向元件的选取上，首选正序故障分量。信号传输可采用光纤、屏蔽电缆或直流单高压开关量引导线。本文主要介绍了采用光纤的纵差保护的原理、构成和动模试验结果。This paper describes a method about the microcomputer vertical differential protection of short transmission lines up to 35kV. The vertical differential provided in the scheme adopts the principle of dividing phase differential protection. In this principle the sudden change capacity in phase electric current differential is used as starting unit and differential unit adopts whole cycle Fu's arithmetic. As for the selection of direction unit, the positive order hitch branch is preferred. This paper mainly introduces the principle, configuration and test results of optial fiber vertical differential protection scheme.

关 键 词：短线路 分相差动保护 光纤 微机 

分 类 号：TN818[电子电信—信息与通信工程]