Autor: Moulai, H. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Thermal Transfers of $SF_6$ Electrical Arcs in High Voltage Circuit Breakers
Autorzy:: Ziani, A.
Moulai, H.
Powiązania:: https://bibliotekanauki.pl/articles/1399709.pdf
Data publikacji:: 2013-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 52.65.Ww
52.25.Kn
Opis:: A new approach of thermal transfers modeling in electrical arcs at the opening of a high voltage circuit breaker will be presented. For instance, the arc equations will be coupled with the energy conservation equations. This approach enables to take into account the temporal variations of the temperature and dissipated energies during the extinction phase. On the other hand, the finite elements method is introduced in order to investigate the temperature profile variations. An arc quenching for a default current of 50 kA, 245 kV, $SF_6$ line breaker has been simulated. The results obtained by this coupling will be compared to applied measurements available through the literature.
Źródło:: Acta Physica Polonica A; 2013, 123, 2; 241-244
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Discharge Currents Discrimination Technique Based on Multi-Linear Regression Line and Artificial Neural Networks for Power Transformers Diagnosis
Autorzy:: Benyahia, F.
Nacer, A.
Moulai, H.
Aberkane, F.
Beroual, A.
Powiązania:: https://bibliotekanauki.pl/articles/1399715.pdf
Data publikacji:: 2013-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 77.22.Jp
52.80.Wq
Opis:: The proposed work will be consecrated to the study of positive pre-breakdown currents triggered in mineral transformer oil under 50 Hz alternating overvoltage. Since negative currents are recorded in low rates and for higher voltage levels than positive ones, only the latter will be prior taken into consideration. Both streamer propagation and arc discharge current types are identified and are used in the training process of an artificial neural network and the multi-linear regression line of these currents in order to develop a complementary diagnosis tool that can serve as an on-line transformer protection. More successful results than those obtained by other developed techniques are expected.
Źródło:: Acta Physica Polonica A; 2013, 123, 2; 250-253
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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