Dynamic behavior of static VAR compensator during faults of grid including wind power plant \

Abstract EN

Induction machines are widely used as generators in wind power generations because of their robustness, reliability, low cost, and maintenance.

Nevertheless, due to their reactive power demand from the system to which they are connected, the use of this type of generators carries new related power quality problems, which generally consist of voltage regulation and reactive power compensation.

To stabilize the voltage across a wind turbine coupled to the grid, a Static VAR Compensator (SVC) is developed in this paper.

The compensator, based on a Fixed Capacitor Thyristor Controlled Reactor (FC-TCR) type uses a capacitor bank mounted in parallel with a thyristor-controlled coil to ensure a dynamic response to the variable reactive power of a power plant which contains wind turbine equipped with induction generators.

This work presents the dynamic behavior of the SVC during faults that may occur in the grid.

Then, the SVC performance is tested for different operating regimes.

This study showed the reduction of the voltage fluctuation level and subsequently a consolidation of the voltage quality at the coupling node.

Also, this analysis showed the improvement of the stability of the power plant in front of the studied faults.