光储充一体化充电站的建模与仿真

Modeling and Simulation of PV-Storage-Charging Integrated Power Station

基于电力系统仿真软件建立某在建光储充一体化充电站的仿真模型,采用静止无功补偿器(static var compensator,SVC)对配电网进行补偿,抑制光储充一体化充电站并网时造成的电网电压波动。研究结果表明,所建立的仿真模型在最大功率点跟踪控制策略下,不仅能够实现光储充一体化充电站的基本功能,实现系统充放电的稳定性,且通过SVC补偿后,电网母线电压有效值的波动从22.7%降至4.3%。说明SVC对光储充一体化充电站并网时的电压波动具有良好的抑制效果,所设计的系统模型是合理、有效和稳定的。

A PSCAD-based simulation model of a PV-storage-charging integrated power station was built,using the static var compensator(SVC)to compensate the power distribution network and inhibit the voltage fluctuation caused by the PV-storage-charging integrated power station being connected to the grid.The research results show that the established simulation model under the Maximum Power Point Tracking(MPPT)can not only realize the basic functions of the PV-storage-charging integrated power station and the stability of the charge and discharge system,but enable the busbar voltage volatility to fall from 22.7%to 4.3%through the SVC compensation,proving that the SVC has a good inhibition effect on the voltage fluctuation when the PV-storage-charging integrated power station is connected to the grid.The designed system model is verified to be reasonable,effective and stable.