Next Article in Journal
The Optomechanical Response of a Cubic Anharmonic Oscillator
Previous Article in Journal
A High Manganese-Tolerant Pseudomonas sp. Strain Isolated from Metallurgical Waste Heap Can Be a Tool for Enhancing Manganese Removal from Contaminated Soil
Open AccessArticle

Experimental and Numerical Investigation of the Internal Temperature of an Oil-Immersed Power Transformer with DOFS

1
Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defence, North China Electric Power University, Baoding 071003, China
2
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(16), 5718; https://doi.org/10.3390/app10165718
Received: 31 July 2020 / Revised: 10 August 2020 / Accepted: 14 August 2020 / Published: 18 August 2020
To accurately detect and monitor the internal temperature of an operating power transformer, the distributed optical fiber sensor (DOFS) was creatively applied inside an oil-immersed 35 kV transformer through high integration with the winding wire. On the former basis, the power transformer prototype with a completely global internal temperature sensing capability was successfully developed and it was also qualified for power grid operation through the ex-factory type tests. The internal spatially continuous temperature distribution of the operating transformer was then revealed through a heat-run test and the numerical simulation was also applied for further analysis. Hotspots of windings were continuously located and monitored (emerging at about 89%/90% height of low/high voltage winding), which were furtherly compared with the IEC calculation results. This new nondestructive internal sensing method shows a broad application prospect in the electrical equipment field. Also, the revelation of transformer internal distributed temperature can offer a solid reference for both researchers and field operation staff. View Full-Text
Keywords: condition monitoring; distributed optical fiber sensing; hotspot location; power transformer; Raman scattering; temperature detection condition monitoring; distributed optical fiber sensing; hotspot location; power transformer; Raman scattering; temperature detection
Show Figures

Figure 1

MDPI and ACS Style

Liu, Y.; Li, X.; Li, H.; Wang, J.; Fan, X. Experimental and Numerical Investigation of the Internal Temperature of an Oil-Immersed Power Transformer with DOFS. Appl. Sci. 2020, 10, 5718.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop