Several generators at the Bridgetown photovoltaic power station

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 is a PV power station?

In general, PV power station consists of multiple arrays of PV cells connected to the grid via an optional DCDC converter and an inverter. Though the DCDC converter is not present in all facilities, it is used in this work because it facilitates power tracking control.

How is a PV generator modeled in a power system steady state study?

A PV generator is modeled as a constant active power and reactive power source in power system steady state studies. When PV generation changes due to the ambient environment, the power system steady state studies do not investigate the transients of the power system caused by the change in PV generation.

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).

What is a solar PV power plant?

Solar PV power plants consist of several interconnected components, each playing a vital role in converting solar energy into usable electricity. Comprised of photovoltaic cells made of silicon, these panels capture sunlight and initiate the photovoltaic effect.