供热汽轮机一次调频负荷响应动态特性研究

Study on Dynamic Characteristics of Load Response to Primary Frequency Modulation in Cogeneration Steam Turbine

供热汽轮机投入抽汽供热后,一次调频动态特性发生了变化,调频性能变差。为研究供热汽轮机一次调频负荷响应特性,选定机组进行了供热工况一次调频试验。建立汽轮机模型进行了仿真模拟,在模型中加入了低压缸功率修正系数,并针对供热机组修正了中低压连通管时间常数。试验及仿真结果显示,所建立模型可以很好地描述供热汽轮机一次调频特性。

The dynamic characteristics of primary frequeney modulation have changed, specifically modulation performance has become worse after the steam turbine is put into supply of heat. In order to study the dynanfie characteristics of load response to primary frequeney modulation of eogeneration steam turbine, the primary frequency modulation test of chosen eogeneration unit was carried out. The turbine model is built for simulation, and the load correction factor of low pressure cylinder is added into the model, and the time constant of connecting tube of medium and low pressure cylinder is amended for the eogeneration unit. The test and simulation results show that the established model can well describe the primary frequency modulation characteristics of eogeneration steam turbine.