Open AccessExperimental Study on Heat Distribution of High-Voltage Cable Terminals under Operating Conditions
Author(s) -
Minhu Xu,
Yun Guo,
Kexin Zhang,
Hang Zhang,
Shulei Shang,
Xingdong Zhao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/692/2/022031
Subject(s) - terminal (telecommunication) , cross linked polyethylene , high voltage cable , thermal , materials science , voltage , steady state (chemistry) , polyethylene , power (physics) , high voltage , electrical engineering , mechanics , engineering , composite material , telecommunications , thermodynamics , physics , chemistry
The insulation failure of the outdoor terminal of the high-voltage cross-linked polyethylene (XLPE) cable has a significant impact on the operation stability of the power grid. Effective evaluation of its thermal state is of great significance to predicting its insulation failure. The paper uses infrared thermal imaging to analyse the thermal field distribution characteristics of the outdoor terminal surface under different ambient temperatures. Test results, theoretical calculations and simulation results all show that the thermal steady-state temperature of the inner and outer layers of the sheath shows a non-linear increase with the increase of the current carrying capacity of the cable, which verifies the correctness of the model, so this model can be used to predict And analyse the temperature distribution of the actual 10kV cable cold shrink terminal at the thermal steady state.