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Modeling Electromechanical Overcurrent Relays Using Singular Value Decomposition
Joint Authors
Wu, Feng-Jih
Chou, Chih-Ju
Lu, Ying
Chung, Jarm-Long
Source
Journal of Applied Mathematics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-17
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
This paper presents a practical and effective novel approach to curve fit electromechanical (EM) overcurrent (OC) relay characteristics.
Based on singular value decomposition (SVD), the curves are fitted with equation in state space under modal coordinates.
The relationships between transfer function and Markov parameters are adopted in this research to represent the characteristic curves of EM OC relays.
This study applies the proposed method to two EM OC relays: the GE IAC51 relay with moderately inverse-time characteristic and the ABB CO-8 relay with inverse-time characteristic.
The maximum absolute values of errors of hundreds of sample points taken from four time dial settings (TDS) for each relay between the actual characteristic curves and the corresponding values from the curve-fitting equations are within the range of 10 milliseconds.
Finally, this study compares the SVD with the adaptive network and fuzzy inference system (ANFIS) to demonstrate its accuracy and identification robustness.
American Psychological Association (APA)
Wu, Feng-Jih& Chou, Chih-Ju& Lu, Ying& Chung, Jarm-Long. 2012. Modeling Electromechanical Overcurrent Relays Using Singular Value Decomposition. Journal of Applied Mathematics،Vol. 2012, no. 2012, pp.1-18.
https://search.emarefa.net/detail/BIM-992951
Modern Language Association (MLA)
Wu, Feng-Jih…[et al.]. Modeling Electromechanical Overcurrent Relays Using Singular Value Decomposition. Journal of Applied Mathematics No. 2012 (2012), pp.1-18.
https://search.emarefa.net/detail/BIM-992951
American Medical Association (AMA)
Wu, Feng-Jih& Chou, Chih-Ju& Lu, Ying& Chung, Jarm-Long. Modeling Electromechanical Overcurrent Relays Using Singular Value Decomposition. Journal of Applied Mathematics. 2012. Vol. 2012, no. 2012, pp.1-18.
https://search.emarefa.net/detail/BIM-992951
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-992951