含有混合储能的微电网控制策略的研究

Research on Control Strategy for Microgrid with Hybrid Energy Storage System

微电网在系统结构发生变化或者出现故障时,通过调节电源保证对电网及负荷提供优质电能,主要体现在控制策略上。将以超级电容器与蓄电池的混合储能系统并联在微电网上为对象,采用模糊滑模的控制方式对混合储能装置进行控制。在Matlab/Simulink平台搭建含有混合储能及多微源的微电网仿真模型,通过具体算例验证了该控制算法的先进性。结果表明,该控制算法不仅可以实现平抑微网并网波动功率,微网离网投切负荷时的波动功率,而且能够实现系统并网/离网的平滑切换,从而使系统的稳定性得到提高,进一步验证该控制策略的优越性。

For micro-grid at runtime that network structure will get changing or failing,how to coordinate the relationship between micro-power,and ensure providing quality power for grid as well as load mainly on control strategies.hybrid energy storage system based supercapacitor and battery parallel to micro-grid line,using fuzzy sliding mode control method to control the hybrid energy storage device.In Matlab/Simulink platform,structures micro-grid simulation model with hybrid energy storage and variety of micro-power,Through specific examples demonstrate the advanced nature of this control algorithm.The control algorithm not only can be implemented to stabilize fluctuations power and switching load power fluctuations at island for micro-grid,but the system aslo can be achieved smooth switching by the Grid/Off-Grid.Thereby improving the stability of the system and further verify the superiority of the control policy.