超超临界机组给水控制异常原因分析及处理  

Cause Analysis and Treatment of Feed Water Control Abnormality of Ultra-supercritical Unit

作　　者：张潇 ZHANG Xiao(China Energy Scienceand Technology Research Institute Wuhan Branch)

机构地区：[1]国家能源集团科学技术研究院有限公司武汉分公司

出　　处：《电站系统工程》2022年第6期41-43,47,共4页Power System Engineering

基　　金：国家能源集团科学技术研究院有限公司科研项目(TY2020Y06)资助。

摘　　要：超临界机组给水控制的好坏,直接关系到整个协调控制系统的调节品质。以某超超临界百万机组给水控制出现异常后的分析与处理为例,讲述了直流炉给水控制的特点、原理以及控制的关键,并给出遇到类似问题的处理方法。经过处理后,机组水冷壁超温大幅减少,主蒸汽、再热蒸汽温度控制品质得到提升,主蒸汽压力变化平稳,可为同类型机组控制策略优化及问题分析与处理提供借鉴。The quality of feed water control of supercritical units is directly related to the regulating quality of the whole coordinated control system. Takes the analysis and treatment of the abnormal feed water control of an ultra-supercritical unit as an example, the characteristics, principles and key points of feed water control of once-through boiler is described,and gives the treatment method of similar problems. After treatment, the water wall overtemperature of the unit is greatly reduced, the temperature control quality of main steam and reheat steam is improved, and main steam pressure changes steadily, which can provide reference for control strategy optimization and problem analysis and treatment of the same type of unit.

关 键 词：直流炉 超超临界 协调控制 锅炉给水控制 耦合 

分 类 号：TK39[动力工程及工程热物理—热能工程]