The Measuring Method for Internal Temperature of Power Transformer Based on FBG Sensors

Thermal modeling of the power transformer to estimate the internal temperature only reflects the winding hot spot to a certain extent. The application of optical fiber sensors to measure transformer internal temperature directly can obtain the true temperature with high accuracy and stability and ov...

Full description

Saved in:
Bibliographic Details
Published in2008 International Conference on High Voltage Engineering and Application pp. 672 - 676
Main Authors Chen Wei-gen, Liu Jun, Wang You-yuan, Liang Liu-ming, Zhao Jian-bao, Yue Yan-feng
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2008
Subjects
Bragg gratings
Electric variables measurement
FBG
Fiber gratings
hot-spot temperature
Optical fiber sensors
Optical sensors
Power measurement
Power transformer
Power transformers
Stability
Temperature measurement
Temperature sensors
winding heat
Online AccessGet full text

Cover

More Information
Summary:Thermal modeling of the power transformer to estimate the internal temperature only reflects the winding hot spot to a certain extent. The application of optical fiber sensors to measure transformer internal temperature directly can obtain the true temperature with high accuracy and stability and overcome the shortcomings of traditional electric sensors. This paper analyses the measuring principle of FBG (Fiber Bragg Grating) sensor, and constructs transformer internal temperature measurement platform with FBG temperature sensors, then adopt short-circuit method to simulate the process of winding heat under different load conditions. Finally the measurement of transformer internal temperature is conducted respectively with FBG temperature sensors and thermocouples. Comparison and analysis of the results shows that FBG sensors can effectively measure the internal temperature of the transformer.
ISBN:9781424428090
9781424438235
1424438233
1424428092
DOI:10.1109/ICHVE.2008.4774024