梯级水电站发电计划编制与厂内经济运行一体化调度模式  

An Integrated Dispatching Mode for Daily Generation Scheduling and Inner-Plant Economic Operation of Cascade Hydropower Plants

作　　者：卢鹏[1] 周建中[1] 莫莉[1] 张睿[1] 王超[1] 

机构地区：[1]华中科技大学水电与数字化工程学院,湖北省武汉市430074

出　　处：《电网技术》2014年第7期1914-1922,共9页Power System Technology

基　　金：国家自然科学基金重点项目(51239004);国家自然科学基金青年科学基金项目(51109086)~~

摘　　要：为充分发挥梯级水电站水力、电力补偿调节作用,实现水调与电调的有机结合,提出一种发电计划编制与厂内经济运行一体化循环嵌套调度模式。从发电侧及需求侧的角度出发,建立以短期调峰量最大为目标的发电计划编制模型,通过峰荷比调峰方式生成电站出力方案,并在空间最优流量分配表基础上实现模型高效求解;结合发电计划化编制与厂内经济运行耦合特性分析,构建二者的循环嵌套调度模式,将发电计划编制结果作为厂内模型输入,同时使用厂内仿真结果对出力方案进行反馈修正,制定能满足最小下泄要求的电站最优发电计划方案、最优机组组合及机组间负荷分配策略。将该模式应用于金沙江下游溪洛渡—向家坝梯级短期优化运行中,实例表明所提一体化调度模式能实现电站发电计划编制与厂内经济运行一体化运作,为提高梯级电站水能利用率和发电效益提供了一种有效途径。To bring the hydraulic and electric power compensation regulation ability of cascade hydropower plants into full play and implement dynamic integration of hydraulic power dispatching with electric power dispatching, an intergrated loop nesting dispatching mode for daily generation scheduling and inner-plant economic operation is proposed. From the perspective of generation side and demand side, a daily generation scheduling model, in which the maximized short-term peak load regulation is taken as the objective, is established, and through peak load ratio based peak load regulation mode the output scheme of the hydropower plant is generated, and based on the optimal flow allocation table the proposed model can be solved high-efficiently. Combining with analysis on coupling property between daily generation scheduling and inner-plant economic operation, the integrated loop nesting dispatching mode for both is constructed, and the result of daily generation scheduling is taken as the input of the inner-plant model and at the same time the inner-plant simulation result is utilized to perform feedback correction of the output scheme, thus under the premise of satisfying the requirement of minimized released flow the optimal daily generation planning, the optimal unit commitment and the strategy of allocating load among units can be made. Applying the proposed mode to the short-term operation of Xiluodu-Xiangjiaba cascade hydropower plants located in the lower reaches of Jinsha river, the application results show that the proposed integrated loop nesting mode realizes the integrated operation of daily generation scheduling and inner-plant economic operation, which provides an effective approach for improving both water energy utlization and electric power generation benefit.

关 键 词：水调与电调 日发电计划 一体化调度 梯级电站 

分 类 号：TM721[电气工程—电力系统及自动化]