Photovoltaic power station generator set

What is solar photovoltaic (PV) power generation?

Solar photovoltaic (PV) power generation is the process of converting energy from the sun into electricity using solar panels. Solar panels, also called PV panels, are combined into arrays in a PV system. PV systems can also be installed in grid-connected or off-grid (stand-alone) configurations.

What are the different types of PV generators?

Based on where the generated electric energy is used, a PV generator also can be categorized into a stand-alone PV system or a grid-tied PV generator. A PV generator can also be classified into a single-phase system or a three-phase system.

What is a three-phase grid-tied PV generator?

Three-phase PV generators, such as the utility-scale solar power plants, are often connected to the high voltage sub-transmission or transmission networks. This paper focuses on the dynamic models of the PV generator for power system dynamic studies, thus will concentrate on the three-phase grid-tied PV generator.

Why should PV generators be integrated into the grid?

With the increased integration of PV generators into the grid, the system operators start to require PV generators have capabilities to stay online during the fault, and provide the active power and the reactive power supports when being required to do so.

What model is used to simulate a solar PV generator?

The WECC generic PV generator model was used and the simulation analysis was conducted in DIgSILENT PowerFactory.

Is a photovoltaic generator a PQ node?

Unlike a conventional generator that is often modeled as a PV node (set the generator’s terminal voltage and its active power output constant), a photovoltaic generator is operated as a PQ node (set the photovoltaic generator’s active power and reactive power outputs constant).