PG9171E型联合循环机组冷态启动优化研究
Optimization Study on Cold Start of PG9171E Combined Cycle Unit
钟承晔 1韩朝兵 2戴坤鹏2
作者信息
- 1. 上海电力股份有限公司罗泾燃机发电厂,上海 201900
- 2. 上海明华电力科技有限公司,上海 200090
- 折叠
摘要
通过冷态启动优化对比试验,分析了某PG9171E型联合循环机组不同冷态启动过程的差异,确定了机组冷态启动过程中较佳的燃气轮机暖机负荷点.试验结果表明:与燃气轮机满负荷冷态启动过程相比,优化后冷态启动时间缩短,单次冷态启动产生的节能效益约为3.643 万元,并且冷态启动过程汽缸应力峰值减小,转子表面应力达到峰值后的下降速率降低,主蒸汽温度、汽包上下壁温、主蒸汽压力上升过程更加平滑,对蒸汽参数的控制更加精准,增加了对抗扰动的能力,汽包和凝汽器水位变化幅度减小,水位自动控制投入时间增加,需要人工干预次数减少.研究成果可为联合循环机组冷态启动优化提供借鉴和参考.
Abstract
Through comparative experiments of cold start optimization,the differences in vary cold start processes of a certain PG9171E combined cycle gas turbine were analyzed,and the optimal gas turbine warm-up load point during the cold start process of the unit was determined.The experimental results show that compared with the cold start process of a gas turbine at full load,the optimized cold start time is shortened,and the energy-saving benefits generated by a single cold start are about 3.643 ten thousand yuan.In addition,the peak stress of the cylinder during the cold start process is reduced,and the rate of decrease after the surface stress of the rotor reaches the peak is reduced.The main steam temperature,the upper and lower wall temperature of the steam drum,and the main steam pressure rise process are smoother,the control of steam parameters is more precise,and the ability to resist disturbances is increased.The amplitude of water level changes in the steam drum and condenser is reduced,and the time for automatic water level control is increased,requiring less manual intervention.The research results can provide reference and guidance for the optimization of cold start of combined cycle units.
关键词
联合循环机组/冷态启动优化/安全性/经济性Key words
combined cycle unit/cold start optimization/security/economy引用本文复制引用
基金项目
国家电力投资集团科技研究项目(SH202212)
出版年
2024
NETL
NSTL
万方数据