一种面向光伏发电的微网系统储能控制与调节优化方法

Energy Storage Control and Regulation Optimization Method for Microgrid System for Photovoltaic Power Generation

储能问题一直是微网系统稳定运行的重要基础。为了实现微网系统电力能源的灵活调度,改善电能质量,本文设计出一种面向光伏发电场景下的微网混合储能控制与调节系统。该系统采用功率调整控制法实现了光伏阵列输入功率与输出功率的平衡,稳定了直流母线电压,提高了光伏阵列与蓄电池和超级电容混合储能设备的匹配精度。当光伏阵列出现负载功率波动时,蓄电池和超级电容构成的混合储能设备可以实现能量互补,通过输入和输出高低频功率来抑制负载的功率波动对直流母线造成的影响。本文提出的混合储能控制与调节系统可以极大地提高微网系统的稳定性和可靠性,减少电力能源的浪费,改善微网系统电能输出质量。

The problem of energy storage has always been an important basis for the stable operation of microgrid systems.In order to realize the flexible scheduling of power energy in the microgrid system and improve the power quality,this paper designs a microgrid hybrid energy storage control and regulation system for photovoltaic power generation scenarios.The system adopts the power adjustment control method to achieve the balance between the input power and the output power of the photovoltaic array,stabilizes the DC bus voltage,and improves the matching precision of the photovoltaic array and the battery and the super capacitor hybrid energy storage device.When the load power fluctuation of the photovoltaic array occurs,the hybrid energy storage device composed of the battery and the super capacitor can realize energy complementation,and suppress the influence of the power fluctuation of the load on the DC bus by inputting and outputting high and low frequency power.It can be seen that the hybrid energy storage control and regulation system proposed in this paper can greatly improve the stability and reliability of the microgrid system,reduce the waste of power resources,and improve the output power quality of the microgrid system.