Journal ArticleDOI
A Proposed Method of Harmonic Restraint Differential Protecting of Transformers by Digital Computer
J. A. Sykes,I. F. Morrison +1 more
TLDR
The principles of a method of transformer protection by digital computer are described, which is essentially an adaptation ion of harmonic-restraint differential protection.Abstract:
The principles of a method of transformer protection by digital computer are described. The method is essentially an adaptation ion of harmonic-restraint differential protection.read more
Citations
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Book
Computer Relaying for Power Systems
Arun G. Phadke,James S. Thorp +1 more
TL;DR: In this paper, the authors present a comprehensive, up-to-date account of computer relaying in power systems, based in part on the author's extensive experience in the field.
Journal ArticleDOI
A state-of-the-art review of transformer protection algorithms
M.A. Rahman,B. Jeyasurya +1 more
TL;DR: A comparative study of algorithms for digital differential protection of power transformers as to their speed of response, computational burden and capability to distinguish between an inrush and transformer internal fault.
Journal ArticleDOI
Online identification of magnetizing inrush and internal faults in three-phase transformers
Tarlochan S. Sidhu,M.S. Sachdev +1 more
TL;DR: In this article, a microprocessor-based system for online identification of magnetizing inrush and internal fault conditions in three-phase transformers is presented, using a digital algorithm which is based on a transformer model and can be used irrespective of whether or not it is possible to measure winding currents.
Journal ArticleDOI
Fuzzy logic-based relaying for large power transformer protection
TL;DR: In this paper, the authors proposed a new relaying algorithm to enhance the fault detection sensitivities of conventional techniques by using a fuzzy logic approach, which consists of flux-differential current derivative curve, harmonic restraint, and percentage differential characteristic curve.
Journal ArticleDOI
Investigation of magnetizing inrush current in a single-phase transformer
P.C.Y. Ling,A. Basak +1 more
TL;DR: In this paper, the effects of the remanent flux density, the switching angle, and the primary winding resistance on the magnetizing inrush current of a 2.5kVA single-phase transformer are presented.
References
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Journal ArticleDOI
Fault Protection with a Digital Computer
TL;DR: In this article, a fundamental basis has been developed for the use of a time-shared stored-program digital computer to perform many of the electrical power-system protective-relay functions in a substation.
Journal ArticleDOI
Digital filter design techniques in the frequency domain
Charles M. Rader,Bernard Gold +1 more
TL;DR: In this paper, the z-transform calculus is used to design a digital filter whose impulse response is similar to that of a given analog filter, and the effect of digital arithmetic on the behavior of digital filters is also considered.
Journal ArticleDOI
Digital Calculation of Impedance for Transmission Line Protection
Barry J. Mann,I. F. Morrison +1 more
TL;DR: In this article, the authors proposed a method of distance-type protection suitable for on-line digital computer protection of transmission lines, based on the predictive calculation of peak fault current and voltage from a small number of sample values.
Related Papers (5)
A New Computer-Based Flux-Restrained Current-Differential Relay for Power Transformer Protection
Arun G. Phadke,James S. Thorp +1 more