电源快速切换技术在热电厂电力系统中的应用

摘要

热电厂厂用6 kVⅢ段备用电源切换装置在运行切换中易发生失电故障,对热电厂安全运行形成重大隐患。且热电负荷难以平衡,经常引发电网、热网波动事故。本文设计了电源快速切换技术,采用基于现代多功能保护和控制的REF542plus平台的微处理系统的SUE3000快切装置,该装置具有快速切换、首次同相切换和残压切换等功能,可极大地提高热电厂电力系统的安全性,从而确保热电厂电力系统的有效运行。%Standby power switching devices 6 kVⅢ of thermal power plant easily occurred loss of power failure in the switching,it will form a major hazard to safe operation of thermal power plant.And the thermal load is difficult to balance,which often lead to power and heat network fluctuations accident.This paper has designed power fast switching system based on modern multi-function protection and SUE3000 fast cutting device of the REF542plus platform microprocessor system,which possesses functions of fast switching、first-phase switching and residual voltage switching,and it can be greatly improved security to ensure the effective operation of power system power plant.