一种基于跨步量化机组输出功率的优化组合新方法

New Unit Commitment Method Based on Generation Output Discretization

鉴于传统算法在机组组合问题上复杂且不便于实际操作的问题,通过建立以发电成本最小为目标的数学模型,将调度周期化为若干个时间跨度,并离散量化机组输出功率调整,在每个时间跨度内结合使用回溯法和比较替代法,依次求各时间跨度内的最优组合方案。实例计算结果表明,基于跨步量化机组输出功率的回溯法和比较替代法能够简便快速地解决机组组合问题,同时由于约束条件的加入可以确保该方法的可扩展性。

When considering the problem of unit commitment, traditional algorithms are often complicatedand inconvenient for practical application. A new method is proposed based on an objective function aiming at the minimum power-generation cost. The considering period is divided into several intervals and the output of each generator is discretized. In each time interval, the trace-back method and comparing-and-replacing method are used to seek the best unit commitment step by step. It is proved that the proposed method is simple and effective. Other restrictions may be added to ensure the extension of the final solution.