ARRESTER DIAGNOSIS TECHNIQUE AND DEVICE BY MEASUREMENT OF TEMPERATURE

摘要

A method and an apparatus for diagnosing an arrester through temperature measurement are provided to improve safety of diagnosis of the arrester by diagnosing the arrester through the temperature measurement without approaching a high voltage electric circuit. An apparatus for diagnosing an arrester through temperature measurement includes an input unit(100), an arrester temperature measuring unit(200), a surrounding temperature measuring unit(300), a central processing unit(400), and a display unit(500). The input unit(100) inputs a driving command for diagnosing the arrester. The arrester temperature measuring unit(200) measures a surface temperature of the arrester and outputs the measured result as a digital signal. The surrounding temperature measuring unit(300) measures a surrounding temperature of the arrester and outputs the measured result as the digital signal. The central processing unit(400) receives the digital signals from the arrester temperature measuring unit(200) and the surrounding temperature measuring unit(300). The central processing unit(400) calculates a state size for a normal leakage current from a temperature difference of the calculated surface temperature and surrounding temperature of the arrester. The central processing unit(400) diagnoses a state of the arrester and outputs the diagnosed data. The display unit(500) displays the diagnosed data outputted from the central processing unit(400).