基于能量制动的联合循环中汽轮机冷态预暖系统研究
Research on Cold Preheating System of Steam Turbine in Combined Cycle Based on Energy Braking
武海南1
作者信息
- 1. 广东粤电新会发电有限公司,广东江门 529000
- 折叠
摘要
联合循环机组比煤电机组更灵活,通常被作为调峰机组使用.作为衡量机组性能的重要指标,联合循环机组启动速度仍存在提升空间.联合循环机组冷态启动时,汽轮机暖机速度是主要的限制因素.为进一步提高联合循环中汽轮机的灵活性且不牺牲机组寿命,提出了汽轮机预暖要求.利用发电机的能量制动增加轴负载,通过增大预暖蒸汽的进气量,改善暖机效果,缩短暖机时间,以节省启动成本和提高机组整体性能.
Abstract
Combined cycle units are more flexible than coal-fired power units and are usually used as peak shaving units.As an important indicator of unit performance,the startup speed of combined cycle units still has room for improvement.During the cold start of combined cycle unit,the warming up speed of steam turbine is the main limiting factor.In order to further improve the flexibility of the steam turbine in the combined cycle without sacrificing the service life of the unit,the requirements of steam turbine preheating are put forward.Use the energy braking of the generator to increase the shaft load,improve the warm-up effect and shorten the warm-up time by increasing the intake of pre warming steam,so as to save the start-up cost and improve the overall performance of the unit.
关键词
联合循环/汽轮机/冷态预暖/能量制动Key words
combined cycle/steam turbine/cold preheating/energy braking引用本文复制引用
出版年
2024
NETL
NSTL
万方数据