1000MW机组协调控制系统优化研究与应用  

Optimization Research and Application of Coordinated Control System of a 1000 MW Unit

作　　者：胡宇航 HU Yuhang(State Grid Fujian Electric Power Research Institute,Fuzhou 350007,China)

机构地区：[1]国网福建省电力有限公司电力科学研究院,福建福州350007

出　　处：《锅炉技术》2023年第6期20-27,共8页Boiler Technology

摘　　要：针对某1000 MW机组协调控制系统存在的问题,分析了制约机组协调控制系统调节品质的主要原因。提出一种主蒸汽压力设定值在一定裕度内与实际主蒸汽压力随动的策略,同时结合燃料和给水前馈修正、水燃比控制策略修改、给水泵汽轮机转速控制PID参数和阀门流量曲线优化等手段对该机组协调控制系统进行优化,并通过负荷变动试验对优化后机组的调节品质、负荷响应速率进行分析。结果表明:该机组控制系统优化后参数稳定,具有较好的动态控制品质,能够满足机组安全、稳定、经济运行的要求。Aiming at the problems existing in the coordinated control system of a 1000 MW unit,the main reasons that restrict the regulation quality of unit coordinated control system are analyzed.This paper proposes a strategy that the set value of main steam pressure follows up with the actual main steam pressure within a certain margin.At the same time,the coordinated control system of the unit is optimized by means of fuel and feedwater feedforward correction,water fuel ratio control strategy modification,feedwater pump turbine speed control PID parameters and valve flow curve optimization,and the adjustment quality and load response rate of the unit after optimization are analyzed through load variation test.The results show that the optimized parameters of the unit control system are stable,have good dynamic control quality,and can meet the requirements of safe,stable and economic operation of the unit.

关 键 词：协调控制 主蒸汽压力设定值 水燃比 阀门流量曲线 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]