300MW单元机组AGC系统研究与优化

以华能杨柳青电厂5号300MW单元机组为例,针对其控制系统存在的负荷响应速度慢,无法满足电网自动发电控制(AGC)功能要求等问题,对5号单元机组协调控制系统、磨一次风控制系统、制粉控制系统等相关控制逻辑进行了优化,并对相应的控制调节参数进行了整定。5号机组在投入协调控制方式后,分别进行了负荷扰动试验和稳定负荷试验。试验结果表明,分散控制系统(DCS)的各项控制指标能够满足电网AGC功能的要求,并且机组主要运行参数也满足运行要求。通过对华能杨柳青电厂5号机组相关控制逻辑的优化和相关各控制系统调节器参数的整定,最终达到了提高机组AGC系统控制品质的目的。

Research and Optimization of AGC Control System in a 300MW Power Generation Unit

This paper takes the 5th 300MW power generation unit in Yangliuqing Power Plant of Huaneng Group as an example.The control system is too slow to respond to load change and is hard to meet the functional requirement of Automatic Generation Control(AGC) from power grid,so it is necessary to optimize related control systems,including coordinate control system,primary air control system of mills,coal pulverizing control system and so on.Moreover,some parameters of the control systems have been regulated again.After this optimization,the 5th power generation unit has been put into operation for load dynamic and stationary tests respectively.The result shows that all kinds of indexes of distributed control system can meet the demand of AGC functions,and the main operating parameters are satisfied.Through this optimization,the control quality of AGC system is improved.