Transformers Magazine, Vol. 7 No. 1, 2020.
Original scientific paper
A century of dissolved gas analysis - part III
Full text: english pdf 786 Kb
APA 6th Edition
Grisaru, M. (2020). A century of dissolved gas analysis - part III. Transformers Magazine, 7 (1), 50-58. Retrieved from https://hrcak.srce.hr/232078
MLA 8th Edition
Grisaru, Marius. "A century of dissolved gas analysis - part III." Transformers Magazine, vol. 7, no. 1, 2020, pp. 50-58. https://hrcak.srce.hr/232078. Accessed 22 Mar. 2023.
Chicago 17th Edition
Grisaru, Marius. "A century of dissolved gas analysis - part III." Transformers Magazine 7, no. 1 (2020): 50-58. https://hrcak.srce.hr/232078
Grisaru, M. (2020). 'A century of dissolved gas analysis - part III', Transformers Magazine, 7(1), pp. 50-58. Available at: https://hrcak.srce.hr/232078 (Accessed 22 March 2023)
Grisaru M. A century of dissolved gas analysis - part III. Transformers Magazine [Internet]. 2020 [cited 2023 March 22];7(1):50-58. Available from: https://hrcak.srce.hr/232078
M. Grisaru, "A century of dissolved gas analysis - part III", Transformers Magazine, vol.7, no. 1, pp. 50-58, 2020. [Online]. Available: https://hrcak.srce.hr/232078. [Accessed: 22 March 2023]
With time, the size of the transformer increased exponentially both in power andvoltage. Although huge improvements have been made regarding the magnetic core and the decrease of core losses, a
transformer is now producing much more heat due to the design optimization and size reduction. Heat reduces the insulating
properties of the insulating matrix, reducing the conducting properties and accelerating all chemical reactions including ageing and corrosion.
The stresses from the insulation materials increase gradually. In the last century, the ratio of oil volume to the transformer power decreased substantially, and concomitant with this trend, the transformer
power and voltage increased. This means less cooling and less insulation for each MVA and kV. The transformer’s efficiency increased as
well, mainly due to the development of new core material alloys. Also, the thickness of the core plates gives assistance in
reducing no-load losses.
DGA, power transformer, transformer oil
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