Proceedings ArticleDOI
A transient current based bus zone protection scheme using wavelet transform
N. Rama Devi,S. Abul Gafoor,P.V. Ramana Rao +2 more
- pp 1-5
Reads0
Chats0
TLDR
In this paper, the authors deal with the application of wavelet transform for the detection of busbar faults and providing backup for external faults in the event of internal faults, the transient behavior of feeder and zone-2 currents is opposite to that of zone-1 source current and the corresponding currents exhibit similar transient behavior as that of source current.Abstract:
This paper deals with the application of wavelet transform for the detection of busbar faults and providing backup for external faults In the event of internal faults the transient behavior of feeder and zone-2 currents is opposite to that of zone-1 source current In the event of feeder or zone-2 faults, the corresponding currents exhibit similar transient behavior as that of source current The transients of these current signals are analyzed using wavelet based multi resolution analysis to obtain detailed coefficients over a narrow moving window The fault indexes of each current signal, defined based on these detailed coefficients, are utilized to detect the internal faults as well as external faults The scheme is tested for different types of internal and external faults with various incidence angles and fault impedance The proposed scheme discriminates internal faults from external faults even in the presence of current transformer saturationread more
Citations
More filters
Proceedings ArticleDOI
A Fault Zone Identification Scheme for Busbar Using Correlation Coefficients Analysis
TL;DR: The proposed scheme is able to provide ultra-high-speed protection for the bus faults and solves the problem of CT saturation which is the biggest challenge in conventional low-impedance busbar differential protection schemes (87B).
Proceedings ArticleDOI
A New Differential Protection Scheme for Busbar using Teager Energy Operator
Soumitri Jena,Bhavesh R. Bhalja +1 more
TL;DR: The proposed differential and restraining coefficients-based differential busbar protection scheme is able to provide high-speed protection for the bus faults and remains stable against external faults.
Journal ArticleDOI
A New Differential Protection Scheme for Busbar Using d–q–0 Transformation
Soumitri Jena,Bhavesh R. Bhalja +1 more
TL;DR: A comparative evaluation of the proposed scheme with the conventional bus differential protection scheme (87B) clearly indicates its superiority in terms of stability against close-in out-of-zone faults with CT saturation and sensitivity for high impedance internal faults.
Fault Discrimination Algorithm for Busbar Differential Protection Relaying Using Partial Operating Current Characteristics
TL;DR: This Thesis is protected by copyright and/or related rights and has been brought to you by ScholarWorks@UNO with permission from the rights-holder(s).
Proceedings ArticleDOI
Application of Wavelet Transform for IEC-61850 based Busbar Protection
Soumitri Jena,Bhavesh R. Bhalja +1 more
TL;DR: The results obtained from the proposed algorithm show its high responsiveness for bus faults and firmness against external faults and the feasibility of on-field implementation of the proposed scheme for IEC-61850 applications has been discussed.
References
More filters
Journal ArticleDOI
High-speed differential busbar protection using wavelet-packet transform
TL;DR: In this article, a wavelet-packet transform (WPT) based differential busbar-protection technique is presented, which decomposes the fault signal into different frequency bands in the time domain.
Journal ArticleDOI
A new method for protection zone selection in microprocessor-based bus relays
TL;DR: A new method for selecting bus protection zones in microprocessor-based relays, based upon graph theory, is presented and a typical bus arrangement is used to illustrate the graphical representation of station arrangements, graph operations, and associated matrix operations.
Proceedings ArticleDOI
Application of wavelet transform in transient protection-case study: busbar protection
TL;DR: In this article, the application of wavelet transforms to detecting power system faults and describing a number of new protection principles and techniques based on the wavelet transform is presented. But the significant advantages of these protection schemes are outlined in the paper.
Journal ArticleDOI
A novel wavelet approach to busbar protection during CT saturation and ratio-mismatch
TL;DR: In this paper, the use of a continuous wavelet transform (CWT) was used to distinguish faults in a busbar protection zone from those outside the zone. And the proposed wavelet transformation approach based on the Morlet wavelet basis function was found to be an excellent discriminant for identifying the fault signals during the CT saturation and ratio mismatch.