Fault current compensations in resonant grounded distribution systems to mitigate powerline bushfires using a nonsingular terminal sliding model controller

Roy, Tushar Kanti and Mahmud, Md Apel (2021) Fault current compensations in resonant grounded distribution systems to mitigate powerline bushfires using a nonsingular terminal sliding model controller. IET Generation, Transmission & Distribution. ISSN 1751-8687 (In Press)

[img]
Preview
Text
Advance online version.pdf - Published Version
Available under License Creative Commons Attribution 4.0.

Download (8MB) | Preview
Official URL: https://doi.org/10.1049/gtd2.12294

Abstract

A fault current compensation technique is proposed in this paper for resonant grounded power distribution systems in bushfire prone areas. Arc suppression devices with residual current compensation inverters are used to compensate fault currents due to single line-to-ground faults in order to mitigate powerline bushfires. The main contribution of this paper is the design of a compensation technique for the T-type residual current compensation inverter using a non-singular terminal sliding mode control scheme. The main objective of the proposed scheme is to reduce the fault current and bring its value to a level so that it cannot ignite fires. The proposed controller is designed based on the selection of a sliding surface in a way the singularity problem can be avoided and chattering effects in existing sliding mode controllers can be eliminated. The desired current injection through the residual current compensation inverter is ensured by enforcing the control law into the terminal sliding surface where the control law is determined by satisfying the Lyapunov stability criteria. The performance of the non-singular terminal sliding mode controller is compared with an integral sliding mode controller by considering different values of fault currents where these values are varied by changing fault resistances. Results for simulation in the software and processor-in-loop simulations are verified against operational standards which are essential for mitigating powerline bushfires. This work focuses to design a non-singular terminal sliding mode controller for the residual current compensation inverter which is used in an arc suppression device to compensate both active and reactive components of the fault current and keeps its value below 0.5 A within 2 s after activating the residual current compensation inverter which is a requirement as per the operational standard. This controller is designed based on the selection of a terminal sliding surface while satisfying the condition for avoiding the singularity problem.

Item Type: Article
Subjects: H300 Mechanical Engineering
H900 Others in Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Rachel Branson
Date Deposited: 17 Nov 2021 09:52
Last Modified: 17 Nov 2021 10:00
URI: http://nrl.northumbria.ac.uk/id/eprint/47750

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics