Open AccessInfrared Detection and Thermoelectric Coupling Simulation Analysis of 220 kV Insulator Abnormal Heating
Author(s) -
Pipei Zhang,
Peng Wang,
Jiangwei Wang,
Wei Shi,
Jie Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1659/1/012031
Subject(s) - insulator (electricity) , overheating (electricity) , materials science , infrared , contamination , thermoelectric effect , optoelectronics , environmental science , nuclear engineering , electrical engineering , optics , engineering , physics , ecology , biology , thermodynamics
Heat and pollution flash caused by surface contamination are one of the common defects of insulators. If not discovered and eliminated in time, it will cause the deterioration of the insulator and seriously affect the service life of the insulator. If we can grasp the temperature distribution characteristics of the insulator in the state of contamination, the infrared temperature measurement can be used to quickly find and eliminate defects in a timely manner. This paper introduces a large area heating defect of porcelain post insulator and composite suspension insulator in 220kV equipment area, whose temperature distribution showed the rule of overheating at the high-voltage end and the temperature gradually decreasing toward the low-pressure end. Based on the field infrared temperature measurement and thermal image characteristics, it preliminarily analyzed that the heating was caused by insulator contamination and damp. Then, combined with pollution sampling, three-dimensional model establishment and thermoelectric coupling simulation calculation, the correctness of the above conclusions was verified, and preventive measures and suggestions were put forward.