火电机组灵活性提升技术研究

The Study on Flexible Technology of Thermal Power Units

火电机组在我国发电市场中仍占主导地位,为满足可再生能源大规模接入的需求,应对日益扩大的电网峰谷差,亟需提高火电机组灵活性。从直接和间接两种途径研究了机组灵活性改造技术,对实现灵活性提升的几种典型技术途径进行了对比分析,分析了火电机组嵌入式储热配置,并分析了储热方式下的机组热电特性和调峰能力。为实施热电解耦,减少弃风弃光,优化储热配置,增加机组深度调峰能力提供最优方案。

Thermal power unit is still dominant power generation in China. In order to accept large-scale renewable energy sources, and to adapt the increasing peak and valley differences of power grid, it is urgent to improve the flexibility of thermal power units. The flexible reform technology have been researched from the direct and indirect two ways which include several typical approaches, the embedded thermal storage configuration of thermal power units have been discussed, and the thermoelectric properties and peak heat storage under capacity have been analyzed. It provided optimal plan to implement the decoupling of heat and electricity, reduce the renewable energy waste, optimize the heat storage, and increase the depth peaking capacity of the unit.