中国电机工程学报2025，Vol.45Issue(11)：4318-4335,18.DOI:10.13334/j.0258-8013.pcsee.242290
燃煤发电机组灵活运行安全性挑战与对策研究
Research on Safety Challenges and Countermeasures of Flexible Operation for Coal-fired Units
摘要
Abstract
At present,the main power is changing from coal-fired power to new energy.The flexible operation of coal-fired power units provides the optimal solution to reconcile the imbalance between intermittent renewable energy generation and stable power demand.However,coal-fired units contain a large number of main and auxiliary facilities as well as complex energy conversion processes.Their safety issues are becoming increasingly prominent under flexible operation.In view of this,this paper reviews the safety challenges and countermeasures of coal-fired units under flexible operation.First,the safety problems are analyzed with respect to the boiler,turbine,generator,and control system of coal-fired units.Analysis reveals that the primary safety concerns for boilers involve unstable combustion,heating surface damage,fan stall surge,and SCR system operational failures.The safety problems on turbine are thermal fatigue damage,blade water erosion and large shafting vibration.The safety problems on generator involve the fatigue fracture and short circuit of stator rotor.Safety problems on control system are inaccurate data acquisition,lag of data processing and control,and improper implementation of equipment control strategy.Then,the technical solutions to the safety problems of each system are sorted out according to the engineering practice.Finally,the paper prospects future research directions for improving the flexible operation capability of coal-fired units.In conclusion,it provides theoretical guidance and technical support for promoting low-carbon and flexible transformation of coal-fired units.关键词
燃煤机组/灵活运行/安全性/锅炉/汽轮机/发电机Key words
coal-fired units/flexible operation/safety/boiler/turbine/generator分类
动力与电气工程引用本文复制引用
严新荣,黄一博,高翔,于鹏峰,何建乐,周晓鸣,张鹏威,向军,刘金亮,郭剑雄..燃煤发电机组灵活运行安全性挑战与对策研究[J].中国电机工程学报,2025,45(11):4318-4335,18.基金项目
国家重点研发计划项目(2022YFB4100800).National Key R&D Program of China(2022YFB4100800). （2022YFB4100800）
