主变微机差动保护测试法及提高其可靠性措施

摘要

近年来随着微机保护的不断发展和壮大，其优越性和潜力得到广大用户的认同馓机保护技术也趋于成熟，生产厂家和产品种类众多，但其继电保护原理大同小异，仍然不能摆脱由于设计、安装和检修维护的不当而引起的事故．因此，采用正确的测试方法和措施是提高主变微机差动保护可靠性，减少事故发生的重要手段．%With the development of microcomputer-based relaying, the superiority and potential of it have gained wide recognition. Though the technology of microcomputer-based relaying is becoming ma-ture and the types are diverse, the theories of protective relaying bear no essential differences and the relaying could not get rid of accidents which are caused by inappropriate design, installment, inspection and maintaining. Therefore, adopting appropriate testing methods is an important way to improve the re-liability and reduce the ratio of accidents.