提高供热机组一次调频响应能力的研究

Study on Improving the Primary Frequency Response Capability of Heating Units

供热管网含有大量的管道和换热设备,具有一定的储能量。为研究供热机组基于这一特点的一次调频特性,通过MATLAB/Simulink仿真平台,根据模块化建模思想,以汽轮机级组为基本计算单元,建立了汽轮机蒸汽流量与机组功率关系的仿真模型。仿真值和机组设计值及试验数据吻合良好,验证了模型的正确性。基于此模型进行供热机组的一次调频特性研究,仿真结果表明,调节供热快关阀开度能够利用热网储能快速改变机组发电负荷,提升供热机组一次调频响应能力。

The heating pipe network contains a large number of pipelines and heat exchange equipment,which has huge energy storage.In order to study the primary frequency modulation characteristics of the heating unit based on this feature,the simulation model of the steam turbine steam flow and the unit power is established based on the modular modeling idea and the steam turbine class as the basic calculation unit through the MATLAB/Simulink simulation platform.The simulation values are in good agreement with the unit design values and test data to verify the correctness of the model.Based on this model,the primary frequency regulation characteristics of the heating unit are studied.The simulation results show that the heating supply quick-closing valve opening can quickly change the generating load of the unit by using the heat storage energy storage,and improve the primary frequency response capability of the heating unit.