水电机组一次调频与自动发电控制协调策略优化研究

Optimization of Coordination Strategy for Primary Frequency Regulation and Automatic Generation Control of Hydroelectric Units

为保证电网和发电机组之间协调稳定运行,部分主力水电机组采用了小网开度模式,但该模式下的水电机组一次调频性能与自动发电控制功率调节均达不到电网稳定运行的要求。因此,研究了水电机组一次调频与自动发电控制协调策略优化,通过优化监控功率调节和一次调频之间的协调配合关系,提升机组的小网开度模式下的功率调节性能和调频动作性能;同时,使水电机组适应电网异步运行后的机组负荷波动和频率变化特性,以满足电网对大型水电机组的运行管理要求,最后通过实验验证策略的可行性。

To ensure the coordinated and stable operation between the power grid and the generator units,some main hydroelectric units adopt a small grid opening mode.However,the primary frequency regulation performance and automatic power generation control power regulation of the hydroelectric units under this mode cannot meet the requirements for stable operation of the power grid.Therefore,the optimization of the coordination strategy between primary frequency regulation and automatic generation control of hydropower units was studied.By optimizing the coordination relationship between monitoring power regulation and primary frequency regulation,the power regulation performance and frequency regulation action performance of the unit under small grid opening mode were improved.At the same time,to adapt the load fluctuations and frequency changes of hydroelectric units to the asynchronous operation of the power grid,in order to meet the operational management requirements of the power grid for large hydroelectric units,and finally verify the feasibility of the strategy through experiments.