发电技术2024，Vol.45Issue(2)：226-232,7.DOI:10.12096/j.2096-4528.pgt.24023
火电机组深度调峰工况下炉侧蓄热系数对一次调频能力的影响分析
Analysis of the Influence of Furnace Side Heat Storage Coefficient on Primary Frequency Modulation Capacity Under Deep Modulation Condition of Thermal Power Unit
摘要
Abstract
In order to study the influence of the heat storage coefficient of the furnace side evaporation section and superheating section on the primary frequency modulation capacity of the thermal power unit under the deep modulation working conditions,a refined simulation model suitable for the thermal power under the deep modulation working condition was built,based on the typical model in the transient stability program PSD-BPA,and the control logic of the thermal power unit under the actual furnace-machine coordination mode.The correctness of the model was verified by the actual primary frequency modulation data of a DC furnace with a rated power Pe of 1 000 MW at 35%Pe working conditions.Through the simulation model,the influence of the heat storage coefficient of the evaporation section and the superheat section of the furnace side on the primary frequency modulation capacity of the unit under the deep modulation condition was explored.It is found that the smaller the heat storage coefficient of the evaporation section on the furnace side,the stronger the primary frequency modulation response ability of the unit.The larger the heat storage coefficient of the superheated section on the furnace side,the more friendly it is to the primary frequency modulation of the unit.The frequency regulation capability of the unit can be improved by increasing or decreasing the heat storage coefficient in the evaporation and overheat sections.In addition,the refined model of primary frequency regulation established can provide analysis of the margin of primary frequency regulation for thermal power units for power production and regulatory authorities,which is beneficial for the safety of new power systems.关键词
火电机组/深度调峰/蓄热系数/仿真模型/调频裕度Key words
thermal power unit/deep modulation/thermal storage coefficient/simulation model/frequency modulation margin分类
能源科技引用本文复制引用
李展,杨振勇,刘磊,陈振山,季卫鸣,洪烽..火电机组深度调峰工况下炉侧蓄热系数对一次调频能力的影响分析[J].发电技术,2024,45(2):226-232,7.基金项目
国家自然科学基金项目(52376007). Project Supported by National Natural Science Foundation of China(52376007). （52376007）
