基于积分调节的光伏孤岛运行与负荷跟踪控制

Photovoltaic Island Operation and Load Tracking Control Based on Integral Regulation

随着光伏发电系统和微电网的普遍应用,在微电网孤岛运行时,光伏发电功率与负荷额定功率不匹配的问题日益突出。通过研究光伏电池输出功率特性,提出一种基于积分调节算法的光伏电池负荷功率跟踪控制策略,实现在孤岛模式下光伏发电系统输出功率在容量范围内自动跟踪微电网负荷所需额定功率,从而满足微电网孤岛运行模式下功率平衡的要求。最后通过构建的额定功率为100 kW的光伏微电网动模实验平台验证了所提控制策略的可行性。

With the widespread application of photovoltaic power generation systems and micro-grids,the problem of unbalance between the output power of photovoltaic cell and load rated power is increasingly prominent when microgrids operated in island operation.By studying the output power characteristics of photovoltaic cell,a load power tracking control strategy of photovoltaic cell is proposed,based on integral regulation to realize the output power of photovoltaic power generation system automatically tracks the load rate power in isolated micro-girds within its capacity range,so as to meet the requirement of power balance under micro-girds island operation.Finally,the feasibility of the proposed control strategy is verified by the micro-grid dynamic model experiment platform.