Sampling for Computer Protection of Transmission Lines

Hope, G.S.; Umamaheswaran, V. S.

doi:10.1109/tpas.1974.293883

Cited by 40 publications

(3 citation statements)

References 7 publications

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“…Since the concept was first raised in the late 60's [1], relay technology has gone through rapid development. Digital techniques for transmission line protection [2]- [7] have been quickly developed and have included various digital and numeric impedance algorithms for distance protection.…”

Section: Introductionmentioning

confidence: 99%

Positional protection of transmission line using fault generated high frequency transient signals

Redfern

Weller

2000

IEEE Trans. Power Delivery

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This paper presents a new technique for high-speed protection of transmission lines, the Positional Protection technique. The technique uses a fault transient detector unit at the relaying point to capture fault generated high frequency transient signals contained in the primary currents. The decision to trip is based on the relative arrival times of these high frequency components as they propagate through the system. Extensive simulation studies of technique were carried out to examine the response to different power system and fault conditions. Results show that the scheme is insensitive to fault type, fault resistance, fault inception angle and system source configuration, and that it is able to offer both very high accuracy and speed in fault detection.Index Terms-High frequency current signals, positional protection, transient based protection, transmission line protection.

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Section: Introductionmentioning

confidence: 99%

Positional protection of transmission line using fault generated high frequency transient signals

Redfern

Weller

2000

IEEE Trans. Power Delivery

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“…The digital relays measure the impedance between the relay and the fault location using the fundamental components of the voltage and current signals. Many techniques are available in the literature to extract this fundamental component such as the Fourier Transform approach [7,8], the Least Squares approach [9,10], the Travelling Wave concept [ 11].…”

Section: Is Protection Of Transmission Linesmentioning

confidence: 99%

A microprocessor-based relay for parallel transmission lines

Gilany

Malik

Hope

IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings

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“…Este algoritmo baseia-se na teoria das transformações ortogonais [32]. A mais usada é a transformada de Fourier que utiliza o conjunto de funções seno e cosseno como um conjunto ortogonal.…”

Section: B Algoritmo Baseado Na Frequência Fundamental Do Sinal [30]unclassified

Simulação para a avaliação do desempenho do sistema de proteção de distância de uma linha de transmissão de 500 KV

Oliveira¹,

Sato²

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vi vii DEDICATÓRIA A minha querida esposa Romilda, companheira de todos os momentos e pela participação de mais uma conquista na realização de mais um sonho, aos meus país, Espedito e Lusia, minha avó Maria Rosalina e meu tio Pedro, que sempre estiveram e sempre estarão ao meu lado durante mais esta batalha e por me ensinar a valorizar cada dia da minha vida. viii ix AGRADECIMENTOS Ao meu orientador, Prof. Dr. Fujio Sato, pela participação ativa, paciência e inestimável orientação, ao colega Prof. Msc. Stig Lindrston da ABB Power Automation AB de Vastëros, Suécia, pela grande e valiosa ajuda e esclarecimentos durante as simulações no RTDS, ao colega Eng. Don Menzies da ABB Power System AB de Ludvika, Suécia, pela ajuda, amizade e crédito durante as simulações no RTDS e testes de Sistema com HVDC, ao Prof. Dr. Clever S. Pereira Filho da UFMG pela ajuda, amizade e crédito,

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Sampling for Computer Protection of Transmission Lines

Cited by 40 publications

References 7 publications

Positional protection of transmission line using fault generated high frequency transient signals

Positional protection of transmission line using fault generated high frequency transient signals

A microprocessor-based relay for parallel transmission lines

Simulação para a avaliação do desempenho do sistema de proteção de distância de uma linha de transmissão de 500 KV

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