水库短期优化调度关系到水库中长期调度计划能否顺利在厂间实现，是水电站实际运行中的重要一环，为保证短期优化调度制定的计划满足电网稳定运行的要求，本文在一般短期优化模型的基础上加入电网稳定性约束，以发电量最大为目标建立梯级水电站短期优化调度模型，采用逐步优化算法（POA）进行求解，寻求梯级水库系统在满足电网稳定运行基础上的最优运行方式。以雅砻江流域“锦官电源组”三级水库群为例，进行了考虑电网约束的梯级水电站短期优化调度，并与传统优化调度模型的调度结果进行对比分析。分析结果表明，本文调度结果满足电网稳定性要求，更有利于电网安全、稳定运行。

The short－term reservoir operation，which is concerned with the execution of the long－term operation plan in hydropower station，is one important process during the station operation． In order to ensure the the stable operation of power grid when execute the generation plan made by the short－term reservoir operation，this paper adds the grid’s constraints to the traditional operation model and set up a new short－term reservoir operation model taken the maximization generation of hydropower as the objective function． This paper solves the model using the POA to seek the best operation way on the basis of the safety and stabilization of the power grid． This paper takes the“Jinguan”of Yalong Ｒiver as an example to set up a short －term reservoir operation model concerned the power grid’s constraints and compares the operation result of traditional model．