Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Runhao Zou"'
Publikováno v:
IET Science, Measurement & Technology, Vol 15, Iss 9, Pp 701-709 (2021)
Abstract Considering that the working temperature is much higher in high‐voltage direct‐current (HVDC) convert transformers than in conventional AC transformers, the combination of thermally upgraded paper and natural ester might be a better choi
Externí odkaz:
https://doaj.org/article/ecb92e14f38d4831b83cd7b9bbb34253
Publikováno v:
Energies, Vol 12, Iss 6, p 1099 (2019)
In oil-paper insulation systems, it is easy to accumulate space/interface charge under a direct current (DC) electrical field. At present, direct measurement of space/interface charge for a thick multi-layer insulation system is not possible. It is n
Externí odkaz:
https://doaj.org/article/b51fefd4da2149f1957c501d194aabe7
Publikováno v:
Energies, Vol 11, Iss 2, p 271 (2018)
Space charge has close relation with the trap distribution in the insulation material. The phenomenon of charges trapping and detrapping has attracted significant attention in recent years. Space charge and trap parameters are effective parameters fo
Externí odkaz:
https://doaj.org/article/750f3602a736473d99d7d45b8c6fcb0f
Publikováno v:
IET Science, Measurement & Technology, Vol 15, Iss 9, Pp 701-709 (2021)
Considering that the working temperature is much higher in high‐voltage direct‐current (HVDC) convert transformers than in conventional AC transformers, the combination of thermally upgraded paper and natural ester might be a better choice to wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3bb8050a1c7b08968ad6326a4bcc984
https://doaj.org/article/ecb92e14f38d4831b83cd7b9bbb34253
https://doaj.org/article/ecb92e14f38d4831b83cd7b9bbb34253
Publikováno v:
2019 IEEE 20th International Conference on Dielectric Liquids (ICDL).
Oil-paper insulation is widely used as the insulating material in transformers. Temperature is one of the major factors causing mineral oil-paper insulation system ageing. In order to relieve mineral oil-paper insulation's thermal ageing problem, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31524ab8e253549646b0a79e521b5f34
https://doi.org/10.1109/icdl.2019.8796784
https://doi.org/10.1109/icdl.2019.8796784
Publikováno v:
2019 IEEE Electrical Insulation Conference (EIC).
Power transformers are the key equipment of power transmission and distribution system. Therefore, it is necessary to study the influence of different fault types on the temperature distribution of transformer windings. Based on the real converter wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6b4ddec179f580e60b62b1c8d2cc280
https://doi.org/10.1109/eic43217.2019.9046607
https://doi.org/10.1109/eic43217.2019.9046607
Publikováno v:
Energies, Vol 12, Iss 6, p 1099 (2019)
Energies; Volume 12; Issue 6; Pages: 1099
Energies; Volume 12; Issue 6; Pages: 1099
In oil-paper insulation systems, it is easy to accumulate space/interface charge under a direct current (DC) electrical field. At present, direct measurement of space/interface charge for a thick multi-layer insulation system is not possible. It is n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5d8fb98098e2116f9f5ae852286d3f1
https://www.mdpi.com/1996-1073/12/6/1099
https://www.mdpi.com/1996-1073/12/6/1099
Publikováno v:
2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE).
In recent years, Chinese UHVDC transmission has made rapid progress. Ensuring safe and reliable operation of UHV converter transformer is of great significance. The performance of insulation oil is directly related to the safe operation level of tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d9700260c4b480aa7f118ec8ea3be96
https://doi.org/10.1109/ichve.2018.8642256
https://doi.org/10.1109/ichve.2018.8642256
Publikováno v:
2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika).
Accurate diagnosis of transformer aging state is very important for ensuring safe operation of transformer. Polarization and Depolarization Current (PDC) behaviors of mineral oil-paper insulation have been widely investigated. With the popularization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6539f0ff12eaee396c7cfa048be4c2c7
https://doi.org/10.1109/diagnostika.2018.8526122
https://doi.org/10.1109/diagnostika.2018.8526122
Publikováno v:
2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE).
The accumulation of space charge inside and at the interface of oil-paper insulation could distort the electric field and cause energetic degradation. So far, two types of model are commonly used to describe space charge movement, which is unipolar c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ccc3075fa2ba94298ecc85537af4f92
https://doi.org/10.1109/ichve.2018.8642063
https://doi.org/10.1109/ichve.2018.8642063