储能联合发电机组调频经济效益分析

近年来,国内电网电源结构发生了巨大变化,风电及光伏发电等大功率新能源并入电网。在利用可再生能源的同时,由于其电网不友好特性,对火力发电机组灵活性要求逐步提高。从储能电池系统联合火电机组对电网提供自动发电控制AGC(automatic generation control)调频角度出发,首先论述了国家针对调频服务的相关补偿政策;然后对调频补偿进行数学建模与分析;接着对储能经济进行数学分析;最后通过Matlab对广东某厂储能参与调频运行结果进行仿真,对储能投资进行评估。结果验证了储能联合发电机组调频具有良好经济效益。

Analysis of Economic Benefits of Frequency Modulation by Energy Storage Combined Generating Units

In recent years, tremendous changes have taken place in the power supply structure of domestic power grid. Wind power and photovoltaic power are integrated into the power grid. While utilizing renewable energy, the flexibility of thermal power units is gradually improved due to the unfriendly characteristics of the power grid. From the angle of frequency modulation of AGC Automatic Generation Control (AGC Automatic Generation Control) provided by combined thermal power units of energy storage battery system, this paper first discusses the relevant compensation policy of the state for frequency modulation service, then carries out mathematical modeling and analysis of frequency modulation compensation, and finally simulates the participation of energy storage in frequency modulation of a plant in Guangdong Province by matlab. The results of the operation are analyzed. It is proved that the frequency modulation of energy storage combined generators has good economic benefits.