WANG En, CAO Min, LI Bo, et al. Research on thermal circuit model for power transformer winding temperature field based on Matlab[J]. 2016, 35(7): 51-54.
WANG En, CAO Min, LI Bo, et al. Research on thermal circuit model for power transformer winding temperature field based on Matlab[J]. 2016, 35(7): 51-54. DOI: 10.13873/J.1000-9787(2016)07-0051-04.
thermal circuit model for transformer winding is set up
to obtain hot point location and temperature-rising range of winding
FBG sensor using Teflon material as substrate is installed in winding hotspot locations via gasket between turns. After reflection by narrowband filtering of grating
demodulate and fit optical wavelength
calculate by mathematical models to obtain hot spot temperature. Collected data show that the measured winding hot spot temperature is measured as 71 ℃ at rated power
the simulation results is71. 8 ℃; the measured temperature is 73 ℃ at 1. 3 times the power
the simulation results is 73. 6 ℃. Hot spot temperature of winding
can be reflected in time and on-line by comparing provide important reference data for safe operation of transformer.