University of Tasmania
Browse

File(s) under permanent embargo

A practical look at harmonics in power transformer differential protection

conference contribution
posted on 2023-05-23, 07:28 authored by Madzikanda, E, Michael NegnevitskyMichael Negnevitsky
Differential protection of transformers traditionally uses second and/or fifth harmonics to block its operation during inrush conditions. The second and/or fifth harmonics produced during fault condition, when a protection system is required to operate, have in some cases blocked or delayed operation of transformer differential protection. The problem is to distinguish fault and inrush situations and allow the protection system to operate when there is fault, and to block it during inrush conditions. In order to achieve this, we propose to measure the rate of change of the third harmonic as an additional indicator of the fault condition. If the rate of change of the third harmonic exceeds some predefined threshold and the second and/or fifth harmonic are detected, the protection system will be allowed to operate, and otherwise it is blocked.

History

Publication title

Proceedings of the IEEE PES International Conference on Power Systems Technology (POWERCON 2012)

Editors

N Nair

Pagination

1-6

ISBN

978-1-4673-2868-5

Department/School

School of Engineering

Publisher

Institute of Electrical and Electronics Engineers

Place of publication

Auckland, New Zealand

Event title

IEEE PES International Conference on Power Systems Technology (POWERCON 2012)

Event Venue

Auckland, New Zealand

Date of Event (Start Date)

2012-10-30

Date of Event (End Date)

2012-11-02

Rights statement

Copyright 2012 IEEE

Repository Status

  • Restricted

Socio-economic Objectives

Biofuel energy

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC