发电技术2026，Vol.47Issue(1)：157-167,11.DOI:10.12096/j.2096-4528.pgt.260114
燃煤发电机组瞬态变负荷过程性能优化研究
Research on Performance Optimization of Transient Load Change Process in Coal-Fired Power Units
摘要
Abstract
[Objectives]With the rapid increase in the installed capacity of renewable energy generation,the requirements for the operational flexibility of coal-fired power units are becoming increasingly stringent.In this context,the control of key thermal parameters of the units becomes more challenging,and the system energy efficiency decreases during transient load change processes.Therefore,it is necessary to develop a multi-parameter coordinated control strategy to balance load change rates with energy efficiency levels.[Methods]Based on the GSE simulation platform,this study constructs and validates a dynamic model of a 350 MW supercritical coal-fired power unit.Additionally,a boiler system heat storage model incorporating the heat storage of the working fluid and pipeline metal is established.On the basis of adopting high-pressure heater extraction steam throttling,an optimized control strategy is proposed that takes into account the change patterns of internal heat storage within the boiler system.[Results]During the load increase from 30％to 50％turbine heat acceptance(THA),high-pressure heater extraction steam throttling increases the maximum load increase rate of the unit from 1.5％Pe/min(where Pe represents the rated load)to 2.5％Pe/min.However,the average standard coal consumption rate during the transient process reaches 314.81 g·(kW·h)-1.Under the premise of meeting the power standards,the optimized control strategy achieves an average coal savings of 0.67 g·(kW·h)-1 during the transient process.[Conclusions]The optimized control strategy can not only significantly increase the load increase rate but also efficiently improve the system energy efficiency,providing strong support for the efficient and stable operation of coal-fired power units.关键词
燃煤发电/燃煤锅炉/深度调峰/低负荷/超超临界机组/能耗分析/锅炉蓄热/瞬态变负荷Key words
coal-fired power generation/coal-fired boiler/deep peak shaving/low load/ultra-supercritical unit/energy consumption analysis/boiler heat storage/transient load change process分类
能源科技引用本文复制引用
陈禄,王波,王登亮,陈伟雄,刘继平..燃煤发电机组瞬态变负荷过程性能优化研究[J].发电技术,2026,47(1):157-167,11.基金项目
国家重点研发计划项目(2022YFB4100400).Project Supported by National Key R&D Program of China(2022YFB4100400). （2022YFB4100400）
