关键词: 梯级AGC, 实时调度, 经济运行, 有功负荷分配, 振动区, 瀑深梯级电站

Abstract: To realize the real-time united operation and control of Pubugou and Shenxigou Stations, two cascade hydropower stations in the lower reach of Dadu River, taking the water level of Shenxigou reservoir as control object, a set of real-time load distribution strategies that can balance the water and power generation for the cascade plants was developed based on the hierarchical control theory and the solving procedure for each strategy was given in detail. Furthermore, based on the combined operation of generating units, dynamic programming and set operation method were used to obtain a optimal operation curves and vibration zones of a single virtual unit, and a practical integrated strategy was also put forward to avoid cascade vibration zones. The successful operation on the real-time control of Pubugou-Shenxigou step power stations proved that the above cascade AGC system is safe, efficient and can meet the use requirement.

Key words: cascade AGC, real-time scheduling, economic operation, active power dispatch, vibration zone, Pubugou-Shenxigou cascade hydropower station