Zobrazeno 1 - 10
of 297
pro vyhledávání: '"K.D. Srivastava"'
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 24:2746-2754
Electrical insulation performance of compressed gas insulated switchgear (GIS) is adversely affected by metallic particle contaminants with a loss of up to 90% of the gas dielectric strength. Such particles play a crucial role in determining the syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38f58c97baf57d478570efec677073f2
https://doi.org/10.1109/tdei.2017.006179
https://doi.org/10.1109/tdei.2017.006179
Publikováno v:
IEEE Transactions on Power Delivery. 25:1573-1579
Multiphase transmission line representations are used in the high-frequency modelling of transformer windings for the estimation of fast overvoltages as well as in the analysis of diagnostic methods used in condition monitoring. Due to the large dens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7c57769eb8999e5191de08e36b2149c
https://doi.org/10.1109/tpwrd.2010.2046677
https://doi.org/10.1109/tpwrd.2010.2046677
Publikováno v:
IEEE Transactions on Power Delivery. 25:1564-1572
Accurate high-frequency simulation of power transformer windings often involves detailed turn-by-turn modeling of the winding structure. The most detailed models currently in existence use multiphase transmission systems with frequency-dependent loss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80c368ab16cca5d97b2e510c22fac510
https://doi.org/10.1109/tpwrd.2009.2037630
https://doi.org/10.1109/tpwrd.2009.2037630
Publikováno v:
IEEE Transactions on Power Delivery. 24:996-1003
Online transformer condition monitoring techniques based on transfer function methods, such as transmission-line diagnostics and swept frequency-response analysis, require the injection of a known test signal into the transformer. On larger power tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9123e6b401427d2e97b9cbca71be6e34
https://doi.org/10.1109/tpwrd.2009.2022674
https://doi.org/10.1109/tpwrd.2009.2022674
Publikováno v:
Electric Power Systems Research. 79:871-877
Transfer function signatures are commonly used in condition monitoring analysis to give early indications of winding movement in power transformers. This paper presents a comparison of the use of trans-admittance (frequency response analysis, FRA), p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77baf033fdf643ffddee026ee5267f24
https://doi.org/10.1016/j.epsr.2008.11.008
https://doi.org/10.1016/j.epsr.2008.11.008
Publikováno v:
International Journal of Applied Electromagnetics and Mechanics. 29:117-129
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e49e7610cc0c5c462b679b72d61ab6e1
https://doi.org/10.3233/jae-2009-1008
https://doi.org/10.3233/jae-2009-1008
Electric field effect on metallic particle contamination in a common enclosure gas insulated busduct
Autor:
G. V. Nagesh Kumar, K.D. Srivastava
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 14:334-340
Sulphur hexaflouride (SF6) is generally found to be very sensitive to field perturbations such as those caused by conductor surface imperfections and by conducting particle contaminants. A study of CIGRE group suggests that 20% of failures in gas ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87fa2e42b5a6269aaacf42331475e60b
https://doi.org/10.1109/tdei.2007.344611
https://doi.org/10.1109/tdei.2007.344611
Publikováno v:
IEEE Transactions on Power Delivery. 20:1930-1938
FRA tests in the frequency range up to 10 MHz were investigated using simulations and measurements. It was found that the FRA test was more sensitive to changes in the transformer at frequencies above 1 to 3 MHz than at lower frequencies. However, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13534b5b7facfe42da2ecdcc97cd4e78
https://doi.org/10.1109/tpwrd.2005.848674
https://doi.org/10.1109/tpwrd.2005.848674
Publikováno v:
Electric Power Components and Systems. 33:575-586
Electrical insulation performance of compressed gas insulated switchgear (GIS) and gas insulated transmission line (GITL) system is adversely affected by metallic particle contaminants. Dielectric coatings help to improve the insulation performance i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45ac4f37f88207d10e88ff70bd286336
https://doi.org/10.1080/15325000590505091
https://doi.org/10.1080/15325000590505091
Publikováno v:
IEEE Electrical Insulation Magazine. 20:5-12
This paper presents data from a study conducted to identify the key factors that contribute to frequency response analysis (FRA) measurement results. The results show that the lower the shunt impedance, the higher the sensitivity of the FRA measureme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a0885118cf40c26f60557803d236843
https://doi.org/10.1109/mei.2004.1342427
https://doi.org/10.1109/mei.2004.1342427