基于虚拟电源配置策略的风光水火多源互补短期优化调度  

Short-Term Complementary Optimal Dispatch Model of Multi-Source Hybrid Power System Based on Virtual Power Configuration Strategy

作　　者：曾雪婷[1] 刘天琪[1] 李茜[1] 王福军[2] 关铁英[2] 

机构地区：[1]四川大学电气信息学院,四川省成都市610065 [2]国网甘肃省电力公司,甘肃省兰州市730000

出　　处：《电网技术》2016年第5期1379-1386,共8页Power System Technology

基　　金：国网甘肃省电力公司科技项目(14H0648)

摘　　要：大规模新能源并网构成了含多种电源的电网新结构,为了减小新能源对系统安全稳定运行产生的影响,从短期调度层面提出了一种基于虚拟电源配置方案的应对策略。该策略定义了负荷追踪度指标,通过利用电源之间的互补特性将新能源和常规电源打捆调度,使得并入电网的功率能够很好地追踪负荷变化。然后,在修正后的负荷曲线上充分发挥水电机组二次调峰的作用,得到更为平滑的剩余负荷曲线,为最终火电机组最优经济性并网提供了条件。整个模型实现了含风光水火多源混合系统短期调度计划调峰效益、经济效益和环保效益的最大化,为高效吸纳大规模新能源并网提供了一种参考方案。最后,以甘肃电网作为算例进行仿真分析,结果验证了模型的有效性。Power system shows a new grid structure consisting of hybrid powers with large-scale renewable energy incorporated into grid.In order to reduce impact of renewable energy on system operation,this paper presents a coping strategy in short-term dispatch level,based on virtual power configuration.The strategy defines load tracking index,using complementary nature of powers and bundling renewable energy and conventional power according to some proportion,making the power integrated into grid well follow load changes.Then hydropower units play full secondary peak-shaving role on corrected load curve,helping thermal units to incorporate into grid.Ultimately this strategy maximizes peak-shaving,economic and environmental benefits of multi-source hybrid power system including wind,solar,hydro and thermal sources.Taking Gansu power grid as an example,simulation results verify validity of the model.

关 键 词：多源混合系统 虚拟电源 电源互补特性 二次调峰 短期协调优化调度 

分 类 号：TM721[电气工程—电力系统及自动化]