An Estimation Method for Primary Frequency Regulation Capability of Thermal Power Units Under Deep Peak Load Regulation
With the wide application of new energy power generation,more and more thermal power units will work under the condition of deep peak regulation.In order to ensure that the primary frequency regulation capacity of the unit can meet the regulation requirements of the power grid,it is of great significance for the modeling of the primary frequency regulation of the unit under the condition of deep peak load regulation.The volume time constant,power distribution coefficient and power overshooting coefficient of each stage in the steam turbine system are the core parameters of the primary frequency regulation model.The power distribution coefficient and overshooting coefficient of each cylinder block are considered to be known constants in the traditional primary frequency regulation modeling,but under the condition of deep peak regulation,these coefficients will change with the change of peak regulation depth.Because of the correlation between the power distribution coefficient and the overshooting coefficient,these parameters cannot be identified independently by the mechanism model.In this paper,through the equivalent transformation of the turbine model,the turbine mechanism model is transformed into the form of transfer function,and the number of parameters to be identified is reduced.All parameters in the new model can be identified independently,and the identification results show that the model can reflect the actual primary frequency regulation capacity of the unit well.
Primary Frequency Regulation Deep Peak Regulation Power Distribution Coefficient Power Overshooting Coefficient
Wang Zijie HuH uaizhong Zhang Xiaoke Cai Yuanli Chen Erqiang
Xi'an Jiaotong University,Shaanxi,Xian,710049 Electric Power Research Institute of State Grid Henan Electric Power Company,Henan,Zhengzhou,450052
国内会议
第22届中国系统仿真技术及其应用学术年会(CCSSTA2021)
合肥
英文
234-239
2021-07-01（万方平台首次上网日期，不代表论文的发表时间）