Design and Analysis of Amplifiers for Protective Relay Testing

• Autorzy: Vilcanqui O. A. C. , Lima A. C. , Almeida L. A. L.

Identyfikatory

DOI

10.12915/pe.2014.03.25

Warianty tytułu

PL

Projekt i analiza wzmacniacza do testowania przekaźników zabezpieczających

• Języki publikacji: EN

Abstrakty

EN

This paper presents the analysis and design of voltage and current amplifiers for use in protective relay testing for frequencies up to the 20th harmonic. A typical topology of DC/AC 50/60Hz converters was used to achieve the nominal and peak values produced by conventional current and voltage transformers. The stability analysis is devised considering different requirements of load and frequency response for relay inputs when compared to that of a typical single-frequency power converter. The temporal response to signals with abrupt changes and multiple decaying harmonics is also investigated. Proper test signals are stored in a PC microcomputer and played-back using the analog audio output, which is conditioned to the proposed amplifier input. The amplifier’s controller was implemented using a DSP with PWM and an IGBT H-bridge. Simulations and experimental results are presented for typical faults and multi-harmonic signals.

PL

W artykule zaprezentowano projekt i analizę wzmacniacza używanego do testowania przekaźników zabezpieczających w szerokim zakresie częstotliwości, do 20 harmonicznej. Układ umożliwia także badania przy szybkich zanikach sygnału oraz przy zanikających harmonicznych. Sterownik wzmacniacza wykorzystuje układ DSP z PWM i mostkiem typu H w technologii IGBT.

Słowa kluczowe

EN

relay test; universal power supply; inverter; protective relay

PL

przekaźnik; wzmacniacz; testowanie

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2014
• Tom: R. 90, nr 3
• Strony: 119--123
• Opis fizyczny: Bibliogr. 22 poz., il., schem., tab., wykr.

Twórcy

autor

Vilcanqui O. A. C.

• Universidade Federal da Bahia, Department of Industrial Engineering, Rua Aristidis Novis Nro. 2, 40210-630, Salvador-BA-Brazil

autor

Lima A. C.

• Universidade Federal da Bahia, Department of Electrical Engineering, Rua Aristidis Novis Nro. 2, 40210-630, Salvador-BA-Brazil

autor

Almeida L. A. L.

• Universidade Federal do ABC, Department of Instrumentation, Automation and Robotics, Av. dos Estados 5001. Santo André - SP-Brazil, Bairro Bangu, 09210-580

Bibliografia

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