基于温控负荷的孤岛微电网建模与控制

Isolated Microgrid Modeling and Control Based on Thermostatically-controlled Load

针对风能的随机性和不确定性,在综合考虑需求侧作用机理和储能系统的协调作用下,纳入需求侧响应,建立孤岛微电网的模型。储能系统采用电压-频率控制实现孤岛微电网的电压和频率稳定,采用功率-无功功率控制实现风电机组的最大功率跟踪控制;考虑用户的选择意愿,以冰箱为例,提出一种适用于温控负荷的变参与度控制策略,协同储能系统进行孤岛微电网的功率控制。基于MATLAB/Simulink环境,建立了含有风电电源、储能系统及冰箱的孤岛微电网模型。仿真结果验证了控制策略的可行性,并在保证用户用能舒适的同时,有效减小对储能装置的容量需求。

Aiming at random and uncertainty of wind power,this paper introduces demand side response and establishes mi-crogrid model on the basis of comprehensively considering coordination of demand side effect mechanism and energy storage system.The energy storage system uses voltage-frequency control to realize voltage and frequency stability of the isolated mi-crogrid and power-reactive power control to realize maximum power tracing control of wind power unit.Considering inten-tion of customers and taking refrigerator as an example,this paper proposes a kind of variable participation control strategy suitable for thermostatically-controlled loads which is cooperated with the energy storage system to conduce power control for isolated microgrid.Based on MATLAB/Simulink environment,it discusses establishment of isolated microgrid containing wind power source,energy storage system and refrigerator.Simulation result verifies feasibility of this control strategy and proves effectiveness of reducing capacity requirement for energy storage device at the same time of ensuring comfortable en-ergy consumption.