Modeling and Simulation of Electromagnetic Transient Parameter Identification Method Based on Photovoltaic Power Station

As the steady-state analysis model of photovoltaic power plant is mainly used to study the power flow and steady-state conditions of photovoltaic power plant on the PCC voltage, no external disturbance of the power generation unit equivalent to constant power or constant voltage source, do not need to understand the battery components Conversion, inverter grid control, MPPT control and other detailed process. When the operating characteristics of the grid or the working environment of the PV power plant changes, such as the sudden short circuit of the power system line, the change of the lighting conditions of the power station, the output power and voltage of the PV array, the inverter current and so on, are no longer stable Value, so the photovoltaic power plant transient analysis need to build a detailed model of photovoltaic power plants to understand the PV array, inverter and other components of the dynamic response process has become particularly important.