基于分布式控制的独立型光储水柴微网调度策略

基于分布式微网能量管理框架,提出一种光储水柴微网经济调度策略,包括预测层、调度层和控制层。预测层提供能量管理相关决策数据;调度层采用边际成本竞价机制,通过光伏和水电电价补偿策略,合理分配光水资源,减少柴油发电机的发电比例;控制层包括稳态控制和紧急控制,其中稳态控制策略用于控制本地设备跟踪调度计划运行,而紧急控制策略用于对系统可用发电容量进行分配,以维持系统功率平衡。以实际光储水柴微网为例,对比实际运行数据,所提出的调度策略在充分利用光水资源的基础上,保证了系统稳定运行。

Economic Dispatch of Stand-alone Photovoltaic-Battery-Hydro-Diesel Hybrid Microgrid Based on Distributed Control

A novel energy management system of microgrid based on distributed control is presented, consisting of prediction layer, dispatch layer and control layer. By applying to photovoltaic-battery-hydro-diesel hybrid microgrid system, the concept of dispatch strategies is described in detail. Considering the specialty of photovoltaic and water resources, a proper schedule is given by dispatch layer based on bidding model. Then at the control layer, the components follow the dispatch schedule according to its own operation strategy.The power balance is guaranteed by reserve power allocation at the system level. A real photovoltaic-battery-hydro-diesel hybrid microgrid system is studied as an example.Simulation results demonstrate the performance of the proposed strategies on the dispatch of photovoltaic and water resources compared with practical operating data.