提高输电线路微机保护选择性的在线整定技术

摘要

This paper analyzed the infection of the transition resistance offault on transmission line microcomputer protection and presented taking advantage of the adaptive technology,and made the setting of microcomputer based distance protection adaptive adjust.Then,the problem about overreach and shortening on microcomputer based protection zone of transmission line would be well settled.%从输电线路微机距离保护受故障过渡电阻影响出发，提出了利用自适应技术，使微机距离保护动作整定值随线路故障时故障点过渡电阻大小自适应调整，从而能较好地解决了过渡电阻对微机保护动作造成的保护范围超越和缩短现象。