微机型母线保护存在的若干问题及解决方案  

Problem of microprocessor-based bus-bar protection and settlement

作　　者：吴怀诚[1] 王巍[1] 

机构地区：[1]沈阳超高压局,辽宁沈阳110003

出　　处：《电力系统保护与控制》2008年第20期78-82,共5页Power System Protection and Control

摘　　要：母线保护装置的可靠性关系到电网系统的安全、稳定运行,但微机型母线保护装置在软硬件设计制造上存在一定缺陷,本文分析了母联开关位置对微机型母线保护装置灵敏度的影响,隔离刀闸辅助触点位置对母差保护的重要性,基准变比对CT断线的影响,母联兼侧路CT极性转换,以及双母双分段母线系统的特殊操作性,并由此提出了解决问题的措施。Reliability of bus-bar protection has contact with safe and steady service of the net,but microprocessor-based bus-bar protection has some defects in design and production of software or hardware.This paper analyzes the influence of position of coupler on sensitivity of microprocessor-based bus-bar protection, the importance of auxiliary point of isolator to bus-bar protection, the influence of datum ratio on TA wire-break,TA reversal of pole of coupler and pass-by, and characteristic operation of the 4-section bus-bar system. Thus some countermeasures are also put forward.

关 键 词：微机型母线保护 运行方式 灵敏度 影响 措施 

分 类 号：TM773[电气工程—电力系统及自动化]