Zobrazeno 1 - 10
of 50
pro vyhledávání: '"B.F. Hampton"'
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 8:953-958
Increasing the permittivity of the propagation medium inside a hollow tube lowers its cut-off frequency, allowing it to transmit a wider range of signal frequencies. This principle is applied to the design of dielectric windows that can be used to fa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e283e66c2bb4f9e8c8c27e543387077
https://doi.org/10.1109/94.971451
https://doi.org/10.1109/94.971451
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 3:213-228
The fundamental theory of the UHF method for detecting partial discharge (PD) in gas insulated substations (GIS) is presented. The effects of position, size, current amplitude and pulse shape of the PD source on the UHF signal can be predicted using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81aa87e00deca2ffa06f766c6b8e1fb0
https://doi.org/10.1109/94.486773
https://doi.org/10.1109/94.486773
Publikováno v:
IEE Proceedings - Science, Measurement and Technology. 143:63-70
A model describing the excitation of UHF signals by current pulses in a waveguide is developed using dyadic Green's functions. This model relates to UHF signals used for the detection of partial discharge (PD) caused by defects in gas-insulated subst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::708803e726a3642edc3804906dde41b1
https://doi.org/10.1049/ip-smt:19960029
https://doi.org/10.1049/ip-smt:19960029
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 2:448-459
The partial discharges produced by internal defects in solid insulation have been investigated using the ultra high frequency (UHF) technique. The work has shown that the discharges produced by a virgin cavity generate a UHF signal that may be detect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c0c9bc9f0363ddc6008777f0266f73e
https://doi.org/10.1109/94.395417
https://doi.org/10.1109/94.395417
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 2:893-905
A defect such as a free metallic particle or stress-raising edge on an electrode could lead to breakdown in a gas insulated substation (GIS), but may be detected by the partial discharges it generates. Of the various detection means available, most s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df165fe4acdbfbd17a70c7eaa46b29cc
https://doi.org/10.1109/94.469984
https://doi.org/10.1109/94.469984
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 1:323-331
The ultra high frequency (UHF) technique has been used to study the partial discharges produced by free conducting particles in gas insulated substations (GIS) with a view to predicting the probability of particle-triggered breakdown. Statistical tec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73a0df5494427f4a6c399e41f30ebf32
https://doi.org/10.1109/94.300265
https://doi.org/10.1109/94.300265
Characterising the discharge development due to surface contamination in GIS using the UHF technique
Publikováno v:
IEE Proceedings - Science, Measurement and Technology. 141:118-122
The effect of surface contamination on GIS spacers has been investigated using UHF partial discharge measurements. The discharge characteristics have been recorded, enabling surface contamination to be distinguished from other sources of partial disc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dcd12e2fcc2b9195c96b930a9d25504
https://doi.org/10.1049/ip-smt:19949979
https://doi.org/10.1049/ip-smt:19949979
Publikováno v:
IEEE Transactions on Electrical Insulation. 26:469-478
Assessing the condition of a GIS by measuring the UHF signals generated in it by partial discharges gives warning of developing faults. The signals are taken from couplers built into the equipment. The couplers are continuously monitored using specia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92b8f9560bad5f667eb55ed299d5c995
https://doi.org/10.1109/14.85119
https://doi.org/10.1109/14.85119
Publikováno v:
Advances in High Voltage Engineering ISBN: 9781849190381
This chapter reviews the basic ionisation processes which occur in SF6, the streamer mechanism which controls breakdown under relatively uniform field conditions, and the influence of electrode surface roughness on breakdown at high pressure. The cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e0882893bda01a1946b3b40d2ae7486
https://doi.org/10.1049/pbpo040e_ch2
https://doi.org/10.1049/pbpo040e_ch2
