考虑峰谷电价及清水池调节容积的取水泵站优化调度

Optimal Operation of Intake Water Pumping Station swith Peak-valley Price and Regulation of Clearwells

取水泵站优化运行调度研究对泵站节能具有较好的指导意义。针对取水泵站的工作特点,以取水泵站日运行耗电费最小为目标,考虑峰谷电价及清水池调节容积对取水泵站日运行耗电费的影响,建立了含定速泵或双速泵的取水泵站优化运行调度数学模型,并利用基于动态规划法的求解策略对该数学模型进行了求解。最后通过实例计算结果表明:在原有泵型不变且同等满足供水要求的情况下,该取水泵站采用优化后的运行方案较目前实际的运行方案,可有效地实现充分利用清水池调节容积应对峰谷电价进行错峰运行,泵站运行耗电费可明显降低,这验证了所建立的优化调度数学模型是合理、有效的,对类似的取水泵站节能运行具有良好的指导意义。

Studying the optimal operation of the intake pumping water station has a guiding significance for pump station energy-saving. In regard to the operational characteristics of intake pumping water stations, a model including constant speed or two-speed pumps is applied for the optimal operation of the intake pumping water stations. The model is established with the minimum day total operational cost as objective function. The effect of peak-valley price and regulation of clearwells on the day total operational cost of the intake pumping water station are taken into consideration in the optimal operation. The model is computed with the method of dynamic planning. Finally, the calculation results of the practical example show that the intake pumping water station after optimal operation can be effectively achieved to run with peak shifting and the full advantage of regulation of clearwells to respond to the peakvalley price in the case of the unchanged types of the original pumps and meeting the requirements of water suppy equally. And the daily total operational cost of the intake pumping water station decreases significantly. This verifies the established optimal operation mathematical model is reasonable and effective. It is of significance for energy-saving operation of similar water pumping stations.