基于双向搜索策略的梯级水电站调峰模型

Peak Modulation of Cascaded Hydropower Station Based on Bi-direction Search Strategy

针对华东地区梯级水电站调度运行管理中电网调峰和顶潮抗咸矛盾的问题,将顶潮需求描述为流量控制约束,建立了梯级水电站群调峰电量最大模型,提出一种正反向启发式搜索方法进行模型求解,采用罚函数和可行区间预测法处理复杂的电站约束和控制条件,以提高方法的搜索效率。通过仿真编制梯级水电站调度计划进行验证,结果表明模型和求解方法可满足下游顶潮抗咸和电网调峰需求,是一种切实可行有效的方法。

Aiming at the contradiction of power grid system peak modulation and anti-tide in the operation and management of cascade hydropower stations in East China, the demand of anti-tide is converted to flow control restraint and the maximum electric quantity model of cascaded hydropower stations is established. A bi-direction search strategy is proposed to solve the model, in which, the penalty function and forecast method of feasible solution are used to deal with complex constraint and control conditions of power stations for improving searching efficiency. The simulation on scheduling plan of cascaded hydropower stations shows that the model and solution method can meet the requirements of grid system peak modulation and anti-tide regulation and is feasible and effective.