A practical approach to accurate fault location on extra high voltage teed feeders (1992)
- Autores:
- Autor USP: COURY, DENIS VINICIUS - EESC
- Unidade: EESC
- Assunto: SISTEMAS ELÉTRICOS DE POTÊNCIA
- Idioma: Inglês
- Resumo: This thesis describes an alternative approach to accurately locating faults on teed feeders. In particular, the technique developed addresses some common problems in fault location and takes into account the practical limitations in the design, extending the range of applicability of the new scheme for a whole variety of practically encountered systems and fault conditions, without sacrificing the high accuracy requirements. The method is based on utilising voltage and current waveforms to all three ends of typical EHV teed feeders, which are then filtered using discrete Fourier (DFT) techniques so as to produce a measure of the steady-state power frequency voltage and current phasors. The latter are obtained as data described by means of post-fault processing applied to data captured during the fault clearance process. The technique described makes use of superimposed, modal components of voltages and currents rather than total, phase values. Means is also developed for effectively synchronising the data from the three ends and an accurate identification of the faulted leg, both essential requisites for achieving high degrees of accuracy. A fault classification technique is also developed. Finally, the fault location technique is evaluated using simulated results from practical 400 kV and 500 kV teed feeder configurations, including those that pose some of the most difficult problems. A sensitivity analysis of the algorithm, whereby the effect ofnon-algorithmic errors introduced by incorrect setting parameters is also presented
- Imprenta:
- Data da defesa: 00.00.1992
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ABNT
COURY, Denis Vinicius. A practical approach to accurate fault location on extra high voltage teed feeders. 1992. Tese (Doutorado) – Universidade de São Paulo, Bath, 1992. . Acesso em: 19 abr. 2024. -
APA
Coury, D. V. (1992). A practical approach to accurate fault location on extra high voltage teed feeders (Tese (Doutorado). Universidade de São Paulo, Bath. -
NLM
Coury DV. A practical approach to accurate fault location on extra high voltage teed feeders. 1992 ;[citado 2024 abr. 19 ] -
Vancouver
Coury DV. A practical approach to accurate fault location on extra high voltage teed feeders. 1992 ;[citado 2024 abr. 19 ] - Protecao digital com caracteristica adaptativa aplicada a linhas de transmissao
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