蒙开个地区河库连通工程泵站机组组合研究

Research on the Unit Commitment of Pumping Stations of River-reservoir Connection Project in “Mengkaige Area”

蒙开个地区河库连通工程是滇南中心城市水资源优化配置、统一调度的重点工程,包含南洞一级泵站、南洞二级泵站和长桥海泵站,研究泵站机组优化组合有助于降低工程的运行成本。以泵站耗能最小为目标,构建了三座泵站的水泵机组优化组合模型,运用遗传算法(GA)、差分进化算法(DE/rand、DE/best)对模型进行求解,研究结果表明:DE/rand算法求解效果较好,搜索空间更大,稳定性强,适用于蒙开个地区河库连通工程泵站机组优化组合模型求解。最优运行过程会维持最少开机台数,当总流量位于开机临界点时,总功率会存在跳变。优化后的机组组合方式提高了泵站运行效率,降低了运行成本,可为蒙开个地区河库连通工程泵站经济运行提供参考。

The river-reservoir connection project in “Mengkaige Area” is a key project for the optimal allocation and unified dispatching of water resources in central cities in southern Yunnan including Nandong Primary Pumping Station, Nandong Secondary Pumping Station and Changqiaohai Pumping Station. Studying the unit commitment of pumping stations will help to reduce the operation cost of the project. Taking the minimum energy consumption of pumping stations as the goal, this paper constructs the optimal unit commitment model of three pump stations, and solves the model by genetic algorithm(GA) and differential evolution algorithm(DE/rand, DE/best). The results show that the DE/rand algorithm has better solution effect, larger search space and strong stability and is suitable for solving the optimal unit commitment models of river-reservoir connection project in “Mengkaige Area”. The optimal operation process will maintain the minimum number of startup units. When the total flow is at the start-up critical point, the total power will increase sharply. The optimized unit commitment modes improve the operation efficiency of the pump stations and reduce the operation cost, which can provide a reference for the pumping station economic operation of the river-reservoir connection project in “Mengkaige Area”.