Localização de faltas em linhas de transmissão usando morfologia matemática
This work an algorithm for fault location is proposed. It contains the following functions: fault detection, fault classification and fault location. Mathematical Morphology is used to process currents obtained in the monitored terminals. Unlike Fourier and Wavelet transforms that are usually app...
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| Formato: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/18568 |
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| Resumo: | This work an algorithm for fault location is proposed. It contains the following functions:
fault detection, fault classification and fault location. Mathematical Morphology
is used to process currents obtained in the monitored terminals. Unlike Fourier
and Wavelet transforms that are usually applied to fault location, the Mathematical
Morphology is a non-linear operation that uses only basic operation (sum, subtraction,
maximum and minimum). Thus, Mathematical Morphology is computationally very
efficient.
For detection and classification functions, the Morphological Wavelet was used.
On fault location module the Multiresolution Morphological Gradient was used to
detect the traveling waves and their polarities. Hence, recorded the arrival in the two
first traveling waves incident at the measured terminal and knowing the velocity of
propagation, pinpoint the fault location can be estimated.
The algorithm was applied in a 440 kV power transmission system, simulated on
ATP. Several fault conditions where studied and the following parameters were evaluated:
fault location, fault type, fault resistance, fault inception angle, noise level and
sampling rate. The results show that the application of Mathematical Morphology in
faults location is very promising |
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