Journal ArticleDOI
Interactive software for evaluating and teaching digital relaying algorithms
M.S. Sachdev,M. Nagpal,T. Adu +2 more
TLDR
An interactive software is presented for evaluating algorithms for digital relay designs that includes signal processing and protection modules that are used in digital relays.Abstract:
An interactive software is presented for evaluating algorithms for digital relay designs. The software includes signal processing and protection modules that are used in digital relays. The software also includes facilities for generating data for testing the performance of digital relay designs. The performance of the designs can also be studied by using data recorded at a power system bus or generated by another software. The results can be displayed in the form of graphs for visual inspection. The software is interactive and can be used with ease. >read more
Citations
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Journal ArticleDOI
Software models for relays
P.G. McLaren,K.K. Mustaphi,Gabriel Benmouyal,S. Chano,A. Girgis,C.F. Henville,Mladen Kezunovic,L. Kojovic,R. Marttila,M. Meisinger,G.L. Michel,M.S. Sachdev,Veselin Skendzic,Tarlochan S. Sidhu,D.A. Tziouvaras +14 more
TL;DR: The past and present uses of relay models are reviewed and the various types of models, what information is required to build such models and the model validation process are discussed.
Journal ArticleDOI
User-friendly, open-system software for teaching protective relaying application and design concepts
TL;DR: This paper describes modeling and simulation software developed specifically for teaching protective relaying application and design concepts by introducing new libraries of signal sources and relay elements developed for the Simulink environment of MATLAB.
Journal ArticleDOI
Using TACS functions within EMTP to teach protective relaying fundamentals
Richard W. Wall,Brian K. Johnson +1 more
TL;DR: In this paper, the authors provide an educational tool for investigating relaying concepts by modeling digital relays using TACS functions within EMTP in a closed-loop manner, using a simple example of a time overcurrent relay.
Proceedings Article
Modeling and simulation tools for teaching protective relaying design and application for the smart grid
Jinfeng Ren,Mladen Kezunovic +1 more
TL;DR: In this article, a set of newly developed modeling, simulation and testing tools aimed at better understanding the design concept and related applications for protective relaying and substation automation solutions for the smart grid.
References
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Journal ArticleDOI
A New Measurement Technique for Tracking Voltage Phasors, Local System Frequency, and Rate of Change of Frequency
TL;DR: In this paper, the frequency and rate-of-change of frequency at the bus can also be determined from the positive sequence voltage phase angle, and the theoretical basis of these computations and results of experiments performed in the AEP power system simulation laboratory are also outlined.
Journal ArticleDOI
A Least Error Squares Technique For Determining Power System Frequency
M.S. Sachdev,M. M. Giray +1 more
TL;DR: An algorithm for measuring frequency at a power system bus is presented and the effects of key parameters, that affect the performance of the algorithm, are discussed.
Journal ArticleDOI
A New Algorithm for Digital Impedance Relays
M.S. Sachdev,M.A. Baribeau +1 more
TL;DR: In this paper, a new algorithm suitable for calculating impedances from digitized voltages and currents sampled at a relay location is presented, where each input is assumed to be composed of a decaying d.c. component and components of the fundamental and harmonic frequencies.
Journal ArticleDOI
A Quantitative Study of Pitfalls in the FFT
Adly A. Girgis,Fredric M. Ham +1 more
TL;DR: The effects of aliasing (including pseudoaliasing), picket-fence effect, and leakage in the fast Fourier transform (FFT) are presented.
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.