Abstract
In recent years, with continuous growth in the scale of both metro systems and their power transmission and distribution equipments, the traditional power facility safety monitoring technology fails to meet the safety requirements. This paper designs an ultrasonic detection based on wireless monitoring system for metro power transmission and distribution equipments, where both the sulfur hexafluoride (SF <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</inf> ) concentration and moisture content in transformer oil are monitored by using acoustic sensors. We present the principle of ultrasonic detection in monitoring SF <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</inf> and moisture contents in transformer oil, and take the use of wireless methods in transmitting the detected concentration of the SF <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</inf> and moisture in consideration.
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