Apr 2013
Electricity Distribution
Substation Acoustic Monitoring
IFI 0606
Apr 2013
SP Energy Networks
SP Energy Networks Innovation
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Innovation Funding Incentive
LV & 11kV Networks
An optical fibre acoustic monitoring technique has been used with some success on monitoring electrical switchgear at transmission voltages. When coupled to a unique processing method known as chromaticity, a number of features are emergent from the complex signal which are indicative of equipment condition.
The acoustic sensor has also been used to detect partial discharges on gasinsulated system. The processing method for the extraction of information has also been extended and refined through a non-power application on acoustic data gathered by a test train running at 100mph. Defects in the track of the order of 1 cm could be detected. This project aims:

  • To establish a cost effective prototype systems for monitoring acoustic emissions from equipment in substations using readily available components

  • To use hardware and chromatic software algorithms to provide a means of detecting and classifying emergent signals from the detected complex acoustic signals detected at substations

  • To assess the performance of such optical fibre based systems with conventional acoustic detectors in an EMI hostile environment

  • To establish guidelines for the use of optical fibre based acoustic detection systems directly on HV equipment.