# A Retrofitting-based Supplementary Controller Design for Enhancing Damping Performance of Wind Power Systems

## TL;DR

This paper introduces a retrofit control method for wind power systems that improves damping performance and stability by using a supplementary controller at the generator site, effective even with high wind penetration.

## Contribution

It presents a novel retrofit control technique that enhances power system damping by only using local wind states and voltage, independent of other synchronous machines.

## Key findings

- Enhanced damping performance in simulations with high wind penetration.
- Controller effectiveness without reliance on other system machines.
- Improved stability in a 4-machine power system model.

## Abstract

In this paper we address the growing concerns of wind power integration from the perspective of power system dynamics and stability. We propose a new retrofit control technique where an additional controller is designed at the doubly-fed induction generator site inside the wind power plant. This controller cancels the adverse impacts of the power flow from the wind side to the grid side on the dynamics of the overall power system. The main advantage of this controller is that it can be implemented by feeding back only the wind states and wind bus voltage without depending on any of the other synchronous machines in the rest of the system. Through simulations of a 4-machine Kundur power system model we show that the retrofit can efficiently enhance the damping performance of the system variable despite very high values of wind penetration.