Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Cuthbert Nyamupangedengu"'
Autor:
Cuthbert Nyamupangedengu, Tapiwa Venge
Publikováno v:
High Voltage, Vol 8, Iss 3, Pp 622-629 (2023)
Abstract Partial discharges (PD) are the ‘cancer’ of electrical insulation. Insulation design and mitigation of PD‐induced degradation should be based on good knowledge of PD phenomena. In that regard, a significant body of knowledge has been b
Externí odkaz:
https://doaj.org/article/f26a3cce047c42bb9849f29f3907eeb1
A Comparative Study of Time-Evolution Characteristics of Single and Double Cavity Partial Discharges
Publikováno v:
Energies, Vol 17, Iss 8, p 1905 (2024)
Partial discharge (PD) in cavities can lead to a breakdown in solid insulation and, therefore, indicate the onset of aging in electrical equipment. It is necessary to investigate the activity of single- and double-cavity PD under aging conditions, wh
Externí odkaz:
https://doaj.org/article/c5d83e08ce8443e0bb6921269890b296
Publikováno v:
IEEE Access, Vol 10, Pp 102237-102246 (2022)
The hydrophilic nature of cellulose compromises the dielectric properties of kraft paper insulation when exposed to water and moisture. The effort to address this setback is an ongoing research enquiry. In the present work, surface-modified rutile-ti
Externí odkaz:
https://doaj.org/article/39657c5db70742d7a870827fbf969b0f
Autor:
Carl P. Wolmarans, Cuthbert Nyamupangedengu, Carina Schumann, Neil J. Coville, Marcelo M. F. Saba
Publikováno v:
Energies, Vol 15, Iss 13, p 4861 (2022)
Liquid insulation is used in high voltage equipment such as power transformers as both dielectric medium and coolant. Breakdown in liquid insulation tends to be governed either by streamer initiation under more uniform fields, or by streamer propagat
Externí odkaz:
https://doaj.org/article/ba3ffe1d459e4c8eb04034c3787b3497
Autor:
Mohammed Mahmood Katun, Rudo Kadzutu-Sithole, Nosipho Moloto, Cuthbert Nyamupangedengu, Chandima Gomes
Publikováno v:
Energies, Vol 14, Iss 23, p 7964 (2021)
Thermal stress and moisture absorption can cause a synergetic negative impact on kraft paper. Among various approaches for improving the dielectric properties of kraft paper, nanotechnology has had promising results. However, the hydrophilicity of mo
Externí odkaz:
https://doaj.org/article/2f6f3215b7af4f29a20d30163eaa9808
Autor:
Tapiwa Venge, Cuthbert Nyamupangedengu
Publikováno v:
Energies, Vol 14, Iss 2, p 478 (2021)
The supply voltage frequency effect on partial discharge (PD) phenomena has continued to draw research interest. Although most high voltage equipment operates at power frequency (50/60 Hz), testing is often done at different frequencies for various r
Externí odkaz:
https://doaj.org/article/d3a91030fa30437bb9a4d7a596bad209
Publikováno v:
High Voltage (2017)
Currently there are no international standards for evaluating the tracking and erosion resistance of DC polymeric insulation under contaminated conditions. Researchers often modify the existing AC inclined plane test standards such as the IEC-60587 t
Externí odkaz:
https://doaj.org/article/ee8b319cd1784c46b13e3ab715541d1e
Publikováno v:
2023 31st Southern African Universities Power Engineering Conference (SAUPEC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf675ca13e7c50f4ee96de120ee12cfd
https://doi.org/10.1109/saupec57889.2023.10057881
https://doi.org/10.1109/saupec57889.2023.10057881
Publikováno v:
2023 31st Southern African Universities Power Engineering Conference (SAUPEC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0792df54b97b786276e1c67d7f270cbc
https://doi.org/10.1109/saupec57889.2023.10057817
https://doi.org/10.1109/saupec57889.2023.10057817
Publikováno v:
2023 31st Southern African Universities Power Engineering Conference (SAUPEC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68cf4c5bd23fa07c2c83fd4e20e096e3
https://doi.org/10.1109/saupec57889.2023.10057826
https://doi.org/10.1109/saupec57889.2023.10057826