跨省互联水电站群长期多目标联合优化调度

发布时间：2018-03-09 20:34

本文选题：跨省互联　切入点：水电站群　出处：《电网技术》2017年12期 　论文类型：期刊论文

【摘要】：西南特高压直流水电与受端电网梯级水电构成了非常复杂的跨省互联水电系统,面临新的复杂协调优化问题。为此,以溪—浙直流水电输送工程为背景,提出一种跨省互联水电站群多目标联合优化调度方法。该方法建立了发电量最大和枯期典型日峰谷差率最小的多目标优化模型,并引入目标转换策略将原问题分解为多个不同峰谷差率约束的子问题;在求解过程中,根据流域间水文特性和调节性能差异实现电站分组和汛枯期分阶段协调优化,提出基于负荷重构的直流约束处理策略,并与逐步优化、动态规划逐次逼近混合搜索算法相结合,实现模型高效求解。仿真调度实例表明,所提方法可充分利用送受两端水文和发电特性差异,有效满足电网长期电量和短期调峰需求。
[Abstract]:Southwest UHV DC hydropower and cascade hydropower of the receiving power network constitute a very complex inter-provincial interconnected hydropower system and face a new complex coordination optimization problem. A multi-objective joint optimal dispatching method for inter-provincial interconnected hydropower stations is proposed, which establishes a multi-objective optimization model with the maximum power generation and the minimum daily peak and valley differential rate in a typical dry period. The original problem is decomposed into several sub-problems with different peak-valley difference rate constraints, and in the process of solving the problem, according to the difference of hydrological characteristics and regulation performance between basins, the power station grouping and flood dry period are coordinated and optimized in different stages. A DC constraint processing strategy based on load reconfiguration is proposed and combined with stepwise optimization and dynamic programming successive approximation hybrid search algorithm to solve the model efficiently. The proposed method can make full use of the difference of hydrologic and generation characteristics between the two ends of the transmission line, and can effectively meet the long-term power supply and short-term peak-shaving demand of the power grid.
【作者单位】：大连理工大学水电与水信息研究所;国网浙江电力调度控制中心;
【基金】：国家自然科学基金项目(51579029);国家自然科学基金重大计划重点支持项目(91547201) 中央高校基本科研业务费专项资金资助(DUT16QY0)~~
【分类号】：TV737

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