高强度调峰调频下梯级水电站实时优化调度研究OA

Under high-intensity peak shaving and frequency regulation,the hydropower station's output frequently fluctuates significantly,facing challenges such as water level fluctuations,unfavorable operating conditions for units,and frequent gate adjustments,greatly complicating the real-time optimization and scheduling of cascade power stations.This paper establishes a multi-unit coordinated precise control method for cascade hydropower plants involving"unit-gate"systems,considering the need for stable water levels,reduced gate adjustments,optimized operational conditions,and minimized water consumption.Models for gate optimization,precise water level control,and real-time load distribution are developed,exploring the coupling and nesting mechanisms across multiple models and scales.This approach is applied to the cascade hydropower stations situated in the middle reaches of the Dadu River.The results indicate a 44.22％reduction in the frequency of gate usage in cascade power plants.The number of units start-stop and vibration zone crossings has decreased by 54.29％and 55.87％,respectively.Furthermore,the water level fluctuations in three daily regulation plants has decreased by 47.86％,67.82％,and 75.76％,respectively.The water consumption rates have decreased by 0.03,0.03,and 0.01m3/(kWh),respectively.Under high-intensity peak shaving and frequency regulation conditions,this method significantly enhances both the operational stability and power generation efficiency of the stations,thereby ensuring the safe operation of the new power system and the associated cascade hydropower stations.