中文摘要：

为适应地方电网对其所辖的梯级小水电优化调度管理的需要，研究设计了地方电网梯级水电优化调度系统，具体包括系统功能、系统组成、各个模块的设计方法以及结合实际的系统实现。系统功能包括数据管理、来水预测、长期优化调度计划制定、短期优化调度计划制定以及日调度方案制定等，可为地方电网调度人员提供梯级小水电优化调度的决策支持。系统经地方电网调度人员使用，结果证明是有效的。

英文摘要：

An optimal operation system of cascade hydropower stations in local power network, which includes system function, buildup, and module design methods, is studied and designed in order to satisfy the demands of cascade hydropower stations optimal management in local electric power network. The system functions include data management, hydrological forecast, long-term optimal operation planning, short-term optimal operation planning, and daily operation scheming. The system can provide decision support for optimal operation of small cascade hydropower plants in local power network. The system is applied in one local power network, and the results show that it is efficient.