海上平台一起电力变压器纵联差动保护跳闸故障原因剖析

Cause Analysis of a Tripping Fault of Longitudinal Differential Protection for Power Transformer on Offshore Platform

变压器是目前电力系统中大量使用到的设备,分布于不同电压阶层,其可靠性直接影响整个电力网络的正常运行,为了避免因变压器故障引起的事故,一般需要为其安装纵联差动继电保护器。通过对变压器差动保护跳闸故障进行数据分析,找出跳闸原因;同时梳理海上平台供电系统的保护特性,并结合报警数据进行分析,找出问题所在,为相关技术人员及类似相关设备类问题提供一些帮助和借鉴。

Transformer is widely used in power system at present.It is distributed in different voltage levels.Its reliability directly affects the normal operation of the whole power network.In order to avoid accidents caused by transformer fault,it is generally necessary to install longitudinal differential relay protectors.Through the data analysis of transformer differential protection tripping fault,this paper finds out the reason of tripping.At the same time,the protection characteristics of off-shore platform power supply system are combed,and the alarm data are analyzed to find out the problems,so as to provide some help and reference for relevant technicians and similar related equipment problems.