汽轮机低压轴封减温调节控制策略的优化  

OPTIMIZATION OF CONTROL STRATEGE FOR TEMPERATURE-REDUCING REGULATION OF LOW-PRESSRUE SHAFT SEAL ON STEAM TURBINES

作　　者：陈志刚[1] 赵志丹[1] 张殿聪 王远平 郝德锋[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032 [2]广东河源电厂,广东河源517000

出　　处：《热力发电》2010年第6期51-52,共2页Thermal Power Generation

摘　　要：汽轮机轴封温度和压力控制的准确稳定,对汽轮机的安全运行至关重要。通过对广东河源电厂2×600 MW机组汽轮机轴封系统在运行过程中存在的低压轴封温度控制偏差大问题的分析,对原控制策略进行了串级回路和变积分参数控制优化。优化后,将低压轴封温度控制在动态偏差±2℃内,静态偏差±0.5℃内。Accurate and stable temperature and pressure control of shaft seal on steam turbines are vital importance for safe operation of steam turbine.Through analysis of large deviation problem existing in temperature control of low-pressure shaft seal in operation process of the shaft seal system for steam turbines of 2×600 MW units in Heyuan Power Plant of Guangdong Province,the original control strategy has been optimized by using cascade loops and variable integral parameters control.After optimization,the temperature of low-pressure shaft seal has been controlled within ±2 ℃ of dynamic deviation,and within ±0.5 ℃ of static deviation.

关 键 词：超超临界 600MW机组 汽轮机 低压轴封 温度 控制 串级回路 变积分 

分 类 号：TK323[动力工程及工程热物理—热能工程]