Method and device for constructing electromagnetic transient simulation model of photovoltaic power generation unit

The invention discloses a method and a device for constructing an electromagnetic transient simulation model of a photovoltaic power generation unit. The method comprises the following steps: establishing a modular crossing controller structure; testing the modular crossing controller structure according to a preset test fault set, and determining parameter information of the modular crossing controller structure; constructing a modular crossing controller according to the parameter information, and constructing an inverter control part of an electromagnetic transient simulation model of the photovoltaic power generation unit according to the modular crossing controller; and constructing a primary main loop part and a measurement link of the electromagnetic transient simulation model of the photovoltaic power generation unit, and constructing the electromagnetic transient simulation model of the photovoltaic power generation unit according to the primary main loop part, the measurement link and the inverter c