电力系统给水加热型联合循环变工况性能研究

Study on the Properties of the Changing Work Condition For Feedwater Heat Combined Cycle in Power System

联合循环发电是目前世界动力发展的主流之一。给水加热型联合循环是用燃气轮机改造现有中、小型蒸汽轮机电厂的方案之一,在我国有着较广泛的应用前景。对给水加热型联合循环不同的变工况运行模式进行了计算,对于运行中各种参数的变化及可能遇到的问题提供预测和分析,在此基础上提出综合优势较好的运行方案,即先降蒸汽轮机负荷。本研究对于实际应用有较好的参考价值。

Combined cycle make power is one of the mainstreams in the world＇s power development. Feedwater heated is one of projects used to reconstruct steam turbines of middle type and minitype by combustion turbine. It will have an extensive application foreground in our country. Different changing work condition of operating modes have been computed. Forecast and analyse of every parameters variety and problem which will be encountered is giv- en in this paper. The best operating mode is reducing the load of steam turbine firstly by the compute and analyse.