基于主变有载调压不能电调故障缺陷分析

Fault analysis based on on on load voltage regulation of main transformer

电压是电力系统中一个重要质量指标。电力系统正常运行时,电压的变动将使用电设备工作出现异常,直接影响生产和日常生活。故电压调节是电力系统主要任务之一。变压器有载调压是在不断电的情况下通过有载分接开关进行电压调整。这种调压措施,调压范围大,投资少,效果好,调压范围一般为20%及以上。调压速度快,又有随时可调性,分接开关手动或电动操作均可,也可摇控电动操作,便于实现自动化管理。本文针对常见的2起有载分接开关故障进行分析总结,为了防止类似故障再次发生,从生产、运行和维护等方面给出相关建议。

Voltage is an important quality index in power system.During the normal operation of power system,the change of voltage will lead to abnormal operation of electrical equipment,which will directly affect production and daily life.Therefore,voltage regulation is one of the main tasks of power system.The on load voltage regulation of transformer is to adjust the voltage through on load tap changer under the condition of continuous power supply.This kind of pressure regulating measure has the advantages of wide range,less investment and good effect.The range of pressure regulation is generally 20%or more.The tap changer can be operated manually or electrically,or remotely controlled electrically,so as to realize automatic management.In this paper,two common on load tap changer faults are analyzed and summarized.In order to prevent similar faults from happening again,relevant suggestions are given from the aspects of production,operation and maintenance.