Solar power generation control system design

How is PV power generation affecting control performance & stability?

PV power generation is developing fast in both centralized and distributed forms under the background of constructing a new power system with high penetration of renewable sources. However, the control performance and stability of the PV system is seriously affected by the interaction between PV internal control loops and the external power grid.

How do grid code requirements affect PV plant design & control?

Grid code requirements have implications in PV plant design and control. Most of the plants to be controlled have already been constructed, so the focus is to design a control and, if needed, to redesign the PV plant adding, for instance, flexible AC transmission system (FACTS) devices.

What is a PV control structure?

Then, PV systems are not only power generation systems but also active systems to optimize the grid performance. In general, control structures are hybrid systems that combine linear and non-linear techniques; as well as classical techniques, advanced control and artificial intelligence methods.

How can a PV generation regulation be implemented?

Similarly, a PV generation regulation can be implemented through a current control loop with a current reference proportional to limit power. This method is known as current limiting. Direct power control and current limiting methods operate independently of the MPPT methods. But, modified MPPT methods can also limit active power.

What are the main control objectives in PV systems?

The main control objectives in PV systems are maximum power and power quality. But, considering the growth of PV systems and other renewable energies connected to power grid, current grid codes are adapting new impositions to mandate that distributed energy resources have specific grid support functions.

What is a power plant control for a PV plant?

In , a power plant control for a PV plant is proposed to accomplish grid code requirements, comparing the operation when the PV plant includes storage support and when it does not. Focusing on the ramp rate control, a model to simulate effective dispatch of energy storage units so as to ensure this requirement is shown in .