超超临界600MW汽轮机运行经济性分析

Operation Economical Analysis of Ultra-supercritical 600MW Turbine

汽轮机在设计工况下运行效率高,在变工况下运行效率要降低,从运行方式方面对两缸两排超超临界600MW汽轮机进行经济性分析,包括单阀或顺序阀运行、不同滑压起点、阀门重叠度几个方面,从而找出经济性最好的汽轮机运行方式,为电厂经济运行提供重要参考依据。

Steam turbines will have high efficiency when operating at design conditions and will have reduced efficiency when operating at variable conditions. This paper conducts analysis on the economic performance of 600MW uhra-supercritical turbine with two casings and double exhaust in aspect of operation mode, including single valve or sequence valve ope ation, different sliding pressure point and valve overlap, to find the best operation mode of steam turbine with best economic performance. This will provide significant reference basis for the power plant to make economic operation.