The University of Southampton
University of Southampton Institutional Repository

Zero phase filtering for lightning impulse evaluation: a K-factor filter for the revision of IEC60060-1 and-2

Lewin, P.L., Tran, T.N., Swaffield, D.J. and Hallstrom, J.K. (2008) Zero phase filtering for lightning impulse evaluation: a K-factor filter for the revision of IEC60060-1 and-2 IEEE Transactions on Power Delivery, 23, (1), pp. 3-12. (doi:10.1109/TPWRD.2007.911124).

Record type: Article

Abstract

The next revision of the international standard for high voltage measurement techniques, IEC 60060-1, is planned to include a new method for evaluating the parameters associated with lightning impulse voltages. This would be a significant improvement on the loosely defined existing method which is in part reliant on operator judgment and would ensure that a single approach is adopted worldwide to determine peak voltage, front and tail times, realizing standardization in measured parameters across all laboratories. Central to the proposed method is the use of a K-factor to attenuate oscillations and overshoots that can occur with practical generation of impulse voltages for testing on high voltage equipment. It is proposed that a digital filter that matches the K-factor gain characteristic be implemented and used for this purpose. To date causal filter designs have been implemented and assessed. This paper is concerned with the potential application of a non-causal digital filter design to emulate the K-factor. The approach has several advantages; the resulting design is only second order, it can be designed without using optimisation algorithms, it is a zero phase design and it matches the K-factor almost perfectly. Parameter estimation using waveforms from the IEC 61083 -2 Test Data Generator and experimental impulse voltages has been undertaken and obtained results show that the zero phase filter is the ideal digital representation of the proposed K-factor. The effect of evaluating parameters by the proposed method is compared to mean-curve fitting and the challenge of effective front time evaluation is discussed.

PDF zfiltfinal.pdf - Other
Restricted to Registered users only
Download (574kB)

More information

Published date: January 2008
Organisations: EEE

Identifiers

Local EPrints ID: 263459
URI: http://eprints.soton.ac.uk/id/eprint/263459
ISSN: 0885-8977
PURE UUID: a861e070-a847-4ab9-bff1-2e3c328209f7

Catalogue record

Date deposited: 15 Feb 2007
Last modified: 18 Jul 2017 07:45

Export record

Altmetrics

Contributors

Author: P.L. Lewin
Author: T.N. Tran
Author: D.J. Swaffield
Author: J.K. Hallstrom

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×