Zobrazeno 1 - 10
of 372
pro vyhledávání: '"Oil-immersed transformer"'
Publikováno v:
Case Studies in Thermal Engineering, Vol 63, Iss , Pp 105353- (2024)
To enhance the thermal efficiency of self-cooling oil-immersed transformers in high-temperature environments, this study proposes a method to improve heat transfer by disrupting the boundary layer through incorporating a V-shaped raised structure on
Externí odkaz:
https://doaj.org/article/9f3c3870f77f4d58a004c46a8ee3f566
Publikováno v:
电力工程技术, Vol 43, Iss 3, Pp 201-208 (2024)
Oil-immersed power transformer is an important part of power grid, and its reliable operation plays a vital role in pomler system security. Aiming at the problem that the insulation state of transformer cannot be assessed quantitatively after long-te
Externí odkaz:
https://doaj.org/article/0f1317186aaa43079a061ec95309728e
Publikováno v:
IEEE Access, Vol 12, Pp 97691-97700 (2024)
Realizing online monitoring of the hot spot temperature of grid mounted transformer windings is a challenge for the power industry. The heat exchange process between the internal heat source area and the external field area of the transformer is the
Externí odkaz:
https://doaj.org/article/c37b517bc13f4854ab681ee015d610da
Publikováno v:
Frontiers in Energy Research, Vol 12 (2024)
A transformer inter-turn fault identification method is proposed based on the digital twin concept to tackle the challenges of high operational complexity and low accuracy associated with traditional transformer fault identification methods. Initiall
Externí odkaz:
https://doaj.org/article/60ccc9cc75f04a3899dd264db01dd124
Publikováno v:
Zhejiang dianli, Vol 42, Iss 12, Pp 36-44 (2023)
The temperature rise at winding hotspots is a critical metric for assessing the operational condition and remaining lifespan of oil-immersed transformers. In the context of a 110 kV oil-immersed self-cooling transformer， a comprehensive two-dimensi
Externí odkaz:
https://doaj.org/article/81bd5c1f8c7b4f82b6b03efc4dce4a92
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 1049-1059 (2023)
The occurrence of a short-circuit fault in a transformer results in a rapid increase in the short-circuit current, and the temperature of the transformer winding rises rapidly. At present, many scholars use analytical formulas to solve for the averag
Externí odkaz:
https://doaj.org/article/ab653f6388b54e6ca8719a8cc2643132
Publikováno v:
Information, Vol 15, Iss 9, p 561 (2024)
This paper proposes a novel method for diagnosing faults in oil-immersed transformers, leveraging feature extraction and an ensemble learning algorithm to enhance diagnostic accuracy. Initially, Dissolved Gas Analysis (DGA) data from transformers und
Externí odkaz:
https://doaj.org/article/023c264e208045b392eb70a044e9c418
Publikováno v:
Energies, Vol 17, Iss 16, p 4082 (2024)
As an indispensable part of the power system, transformers need to be continuously monitored to detect anomalies or faults in a timely manner to avoid serious damage to the power grid and society. This article proposes a combined model for transforme
Externí odkaz:
https://doaj.org/article/3434ec615e1747348f31fd53a753d7e4
Publikováno v:
Applied Sciences, Vol 14, Iss 15, p 6841 (2024)
The average winding temperature of a transformer (AWTT), serving as a key indicator for assessing the running state of the transformer, is of utmost importance in determining a transformer’s electrical properties and the insulation longevity of the
Externí odkaz:
https://doaj.org/article/856b239f9020433ab1874cb3560dc5b7
Insulation condition evaluation of oil-immersed transformer based on entropy weight hierarchy method
Publikováno v:
电力工程技术, Vol 42, Iss 4, Pp 223-230 (2023)
In order to evaluate the insulation condition of oil-immersed transformers effectively, a weight allocation method considering expert experience and degradation state is proposed in this paper. Firstly, a hierarchical structure for insulation conditi
Externí odkaz:
https://doaj.org/article/6c10f0be3ac745c98a579e9056862bbe