Monitoring Gas Generation in Transformers

Abstract

This paper provides information concerning the monitoring and diagnosis of hot metal gases, with special attention given to the detection of hydrogen. Though hydrogen is a superior indicator of incipient faults due to its generation through all temperature zones over 150°C, the detection and analysis of hydrogen levels can be quite erratic. The theories set forth in this paper, offer an examination of hydrogen's physical reactions within the main tank of a transformer which can lead to this erratic and often misleading behavior.