中文摘要：

为适应地方电网梯级水电优化调度的需要，开发了梯级水电信息管理查询系统．其采用3层Client／Server结构和Browser／Server Web技术，数据库独立运行于服务器上．应用程序运行于用户端，以数据库为中心，实现了多个用户的同步操作，同时用户端只需向服务器发出数据请求．全部的数据处理由服务器完成，降低了用户端的硬件配置要求。系统包括系统管理、数据管理、资源管理、特性管理、历史运行数据统计查询、报表管理以及Web查询等功能模块．直观、详尽、准确的数据统计报表可为地方电网梯级水电优化调度提供有力的决策支持．

英文摘要：

Based on three- layer Client/Server structure and Browser/Server Web technique,an information management and inquisition system for cascading hydropower stations in local power network is designed,in which database runs on Server independently and application software runs on Clients. Synchronous operation of multiple users is realized. Client sends data request to Server and Server completes all data processing tasks,which reduces the hardware requirements of Client configuration. The system includes the function models of system management,data management, resource management,characteristic management,statistics and inquisition of historical data,log management,and Web inquisition. The direct,detailed and accurate statistical logs give great support to the decision-making for optimal operation of cascading hydropower stations in local power network.