公用工程系统多周期操作的优化调度

Multi-period Operational Optimization for Utility Systems

针对公用工程系统必须满足外界蒸汽和电力的需求发生周期性变化的情况 ,建立了优化调度模型 ,目标函数考虑了每个周期的操作费用和周期之间设备启动和停运的转运费用。提出了用列队竞争算法和动态规划法分步求解的计算方法 ,此方法所需的计算时间仅与周期数成正比 ,而且能得到全局最优解。用实例计算说明了提出的方法的有效性。

The multi-period operational optimization for utility systems is formulated as a mixed-integer linear program (MILP). The objective function accounts for both operating costs for each period and changeover costs for startup/shutdown of units each between periods of operation. A subsection method is proposed for solving the MILP problem with the line-up competition algorithm coupled with dynamic programming approach. The computation time for the method is proportional to the number of periods, and global solution of the MILP is guaranteed. The effectiveness of the proposed method is illustrated with a example.