Referenced Items are not available for this document.
A current signal often exhibits dynamic characteristics and contains decaying dc components when an earth fault occurs under power oscillations. In this paper, a dynamic phasor estimator for fault current (DPEFC) is proposed to remove the phasor-estimation errors caused by dynamic characteristics and decaying dc components. The proposed DPEEC estimates dynamic characteristics and decaying dc components accurately by an iterative procedure. It can also eliminate the impacts on phasor estimation by reassigning estimations from discrete Fourier transform with the knowledge of the fundamental phasor and the dc components. The performance of the proposed DPEFC is evaluated by computer-simulated signals and EMTDC-generated signals. The results indicate that DPEFC can achieve accurate phasor estimation of fault current in the presence of dynamic characteristics and decaying dc components with a minimal increase of computational cost which meets the requirements of the application in phasor measurement units.
Published in:
Power Delivery, IEEE Transactions on
(Volume:26
,
Issue:
3
)
Date of Publication: July 2011
- Page(s):
- 1744 - 1754
- ISSN :
- 0885-8977
- INSPEC Accession Number:
- 12073124
- Digital Object Identifier :
- 10.1109/TPWRD.2011.2119334
- Product Type:
- Journals & Magazines
- Date of Publication :
- 07 April 2011
- Date of Current Version :
- 23 June 2011
- Issue Date :
- July 2011
- Sponsored by :
- IEEE Power & Energy Society
About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies
A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2013 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.
