Temat: 52.80.Wq - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Pulse Breakdown Strengths of Liquid, Gel and Solid Insulating Materials Using Closely Spaced Spherical Electrodes
Autorzy:: Leask, P.
Powiązania:: https://bibliotekanauki.pl/articles/1807879.pdf
Data publikacji:: 2009-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 77.22.Jp
52.80.Mg
52.80.Wq
Opis:: In this paper an evaluation of a number of different insulating materials, under pulse breakdown conditions, is described. The experimental setup used an 8 stage Marx generator in order to generate a high potential difference (in the range 80-220 kV) between two spherical electrodes which were spaced 1.5-3.5 mm apart. The breakdown voltage of each of the materials was recorded and the data was then post-processed in order to determine the breakdown strength of each of the samples.
Źródło:: Acta Physica Polonica A; 2009, 115, 6; 998-1000
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

Skocz do pozycji: 3.

Tytuł:: Critical Parameters of Gas Cavities in Dielectric Liquids Stressed with High Electric Fields
Autorzy:: Timoshkin, I.
Macgregor, S.
Given, M.
Atrazhev, V.
Vorob'ev, V.
Powiązania:: https://bibliotekanauki.pl/articles/1807891.pdf
Data publikacji:: 2009-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 52.80.Wq
77.22.Jp
Opis:: Electric field stimulates formation of gas-filled cavities on sharp electrodes in insulating liquids which may initiate the dielectric breakdown of these liquids. Using an analytical model based on electrical and thermodynamic properties of fluids, the critical dimensions of gas-filled bubbles in ester fluid and transformer oils stressed with an impulse electric field were calculated. The results obtained in this paper could be important for the optimisation of the application of these liquids in high voltage and pulsed power systems.
Źródło:: Acta Physica Polonica A; 2009, 115, 6; 1022-1024
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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