Design of a non-linear power system stabiliser using the concept of the feedback linearisation based on the back-stepping technique

TL;DR

This paper introduces a novel feedback linearisation approach using back-stepping for designing a non-linear power system stabiliser, enhancing stability and response in synchronous generators.

Contribution

It presents a simple, unique design method for a non-linear stabiliser based on back-stepping, improving stability and response over conventional schemes.

Findings

Faster response and improved damping observed in simulations

Enhanced robustness and stability in transient conditions

Effective voltage regulation achieved

Abstract

This study proposes a feedback linearisation based on the back-stepping method with simple implementation and unique design process to design a non-linear controller with a goal of improving both steady-state and transient stability. The proposed method is designed based on a standard third-order model of synchronous generator. A comparison based on simulation is then performed between the proposed method and two conventional control schemes (i.e. conventional power system stabiliser and direct feedback linearisation). The simulation results demonstrate that fast response, robustness, damping, steady-state and transient stability as well as voltage regulation are all achieved satisfactorily.