热力发电2025，Vol.54Issue(3)：108-120,13.DOI:10.19666/j.rlfd.202407172
火电机组凝结水节流系统优化控制及一次调频性能分析
Optimization control of condensate throttling system in thermal power units and analysis of primary frequency regulation performance
摘要
Abstract
The conventional steam valve predominantly manages power regulation tasks while also addresses limited-scale primary frequency regulation.Condensate throttling can change energy distribution of the unit to a certain extent,and serve as a potential and selectable auxiliary frequency regulation method.To delve deeper into the frequency regulation capability of condensate throttling,the working principle and advantages are dissected,and static and dynamic models of the condensate throttling system are established,the frequency regulation characteristics are analyzed and the frequency modulation boundary conditions are outlined.To comprehensively enhance the dynamic performance of the condensate throttling primary frequency regulation,the system dynamic model is linearized,and then a model-switching fuzzy predictive control strategy is proposed.In this control strategy,fuzzy logic is introduced into the predictive controller algorithm to dynamically adjust control weighting coefficients in real-time,and predictive models are dynamically switched according to operational changes to enhance control quality.Case studies based on actual data from a certain 600 MW unit are conducted,indicating the static and dynamic frequency modulation capabilities of condensate throttling increase with the unit load,which has engineering application value in primary frequency regulation.Compared with the conventional PID and self-tuning fuzzy parameter PID controllers,the proposed control strategy exhibits superior adjustment time and performance metrics under various operating conditions,demonstrating better adaptability to changes in operating conditions.关键词
火电机组/一次调频/凝结水节流/模型切换/模糊预测控制Key words
thermal power unit/primary frequency modulation/condensed water throttling/model switching/fuzzy predictive control引用本文复制引用
杨成帅,房方,何成兵..火电机组凝结水节流系统优化控制及一次调频性能分析[J].热力发电,2025,54(3):108-120,13.基金项目
国家重点研发计划项目(2022YFB4100400) National Key Research and Development Program(2022YFB4100400) （2022YFB4100400）
