Short-term Predictable Power of a Wind Farm via Distributed Control of Wind Generators with Integrated Storage

TL;DR

This paper proposes a distributed control protocol for wind farms with integrated storage, ensuring stable, synchronized power output and equal contribution from each generator, even with communication delays, demonstrated through simulations.

Contribution

It introduces a leader-follower consensus protocol with proven stability for coordinating wind generators with storage, including delay robustness, and provides a practical control methodology.

Findings

Protocol achieves stable power coordination with delays.

Simulation confirms effective power tracking and equal contribution.

Method applicable to modern wind generator fleets.

Abstract

In this paper we introduce a Leader-follower consensus protocol and study its stability properties with and without communication delays. On the practical side, we explore its application on coordinating a group of wind Double-Fed Induction Generators (DFIGs) with integrated storage. To begin with, we establish asymptotic stability of the consensus protocol by employing singular perturbation theory. Subsequently, we establish asymptotic stability of the protocol under communication delays using a Lyapunov-Krasovskii functional. Lastly, we use the proposed protocol to design a methodology that can be adopted by a fleet of state-of-the-art wind generators (WGs). The objective is that the WGs selforganize and control their storage devices such that WF total power output is tracking a reference while equal contribution from each storage device is attained i.e equal power output from each storage. We demonstrate the effectiveness of our results and the corresponding approach via simulations on the IEEE 24-bus RT system.