二次风机变频控制系统在电厂改造的应用  

Application of Frequency Conversion Control System of Secondary Fan in Power Plant Reform

作　　者：杨志军 YANG Zhijun(Shanxi Zhaofeng Aluminum Electricity Co.Ltd.Self-owned Power Plant,Shanxi 045206,China)

机构地区：[1]山西兆丰铝电有限责任公司自备电厂,山西045206

出　　处：《集成电路应用》2019年第1期41-42,共2页Application of IC

摘　　要：以某电厂二次风机的调速方式由液偶控制改为变频控制后,对DCS系统中二次风机控制逻辑进行了修改和优化,改造中涉及到锅炉MFT主保护、6 kV真空断路器控制以及原液偶控制逻辑等。主要研究DCS系统中二次风机变频器控制控制逻辑的修改和优化。The control logic of secondary fan in DCS system was modified and optimized after the speed control mode of secondary fan in a power plant was changed from liquid couple control to frequency conversion control.The transformation involves the main protection of boiler MFT,the control of 6 kV vacuum circuit breaker and the control logic of original liquid couple.This paper mainly studies the modification and optimization of control logic of secondary fan frequency converter in DCS system.

关 键 词：自动控制 电厂改造 二次风机 变频 调速 

分 类 号：TM621.6[电气工程—电力系统及自动化]