城市多水源供水系统一级优化调度模型及求解

First-class optimal scheduling model and evaluation of urban multi-source water supply systems

针对南京市多水源复杂供水系统,建立了以运行费用为目标函数的一级优化调度模型,并采用遗传算法对其进行求解.优化调度结果表明:各泵站供水量、供水压力及A,B测压点的压力在满足用户供水要求的情况下得到了优化,调速泵站的调速作用得到了充分发挥,各泵站供水量得到了重新分配,供水压力及管网测压点的压力随之发生了变化,优化后的压力普遍变小且随时间变化较优化前平稳;为多水源供水系统一级优化调度提供了可行方法,并为泵站二级调度创造了条件.

According to the water supply system in Nanjing with multi-source complex systems, a mathematic model, whose aim function is the operation costs on first-level, was built and solved by genetic algorithm. By analyzing the optimal results, it shows that water supply capacity and hydraulic pressure of every pump station and hydraulic pressure of pressure points A and B have been optimized greatly after optimization, and variable speed pump station takes into function, hydraulic pressures of water distribution network are smaller and change more peacefully. So this study not only provides a feasible way for first-level optimal operation of multi-source complex system, but also does a good job for second-level optimal operation of pump station.