Fourier and Walsh digital filtering algorithms for distance protection

Journal Article · Thu Feb 01 04:00:00 EST 1996 · IEEE Transactions on Power Systems

DOI:https://doi.org/10.1109/59.486133· OSTI ID:244782

Altuve F, H J; Diaz V, I; Vazquez M, E ^[1]

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1. Univ. Autonoma de Nuevo Leon (Mexico). Programa Doctoral en Ingenieria Electrica

Filtering requirements for distance relays are very critical, because they must estimate precisely and quickly the electrical distance to the fault, even with highly distorted input signals. A number of digital filtering algorithms for distance relays have been proposed and some of them are in use in practical relays; however, power system evolution increases the corruption level of signals and imposes the necessity of continuing the research efforts in this area. In the present paper a comparative evaluation of different digital filtering algorithms for distance protection is performed. An evaluation method is proposed, which gives a comprehensive information about filter transient behavior on a wide frequency range of noise. The discussion is focused in well-known algorithms based on Fourier and Walsh transforms, and includes a recently proposed combined sine-cosine filter.

• OSTI ID: 244782
• Report Number(s): CONF-950525--
• Journal Information: IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 1 Vol. 11; ISSN 0885-8950; ISSN ITPSEG
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ALGORITHMS
DETECTION
DIGITAL FILTERS
ELECTRICAL FAULTS
EQUIPMENT PROTECTION DEVICES
POWER DISTRIBUTION SYSTEMS
SYSTEMS ANALYSIS