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The role of circumstance monitoring on the diagnostic interpretation of condition monitoring data

Bahadoorsingh, S. and Rowland, S.M. and Catterson, V.M. and Rudd, S.E. and McArthur, S.D.J. (2010) The role of circumstance monitoring on the diagnostic interpretation of condition monitoring data. In: IEEE International Symposium on Electrical Insulation 2010 (IEEE ISEI), 2010-06-06 - 2010-06-09.

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Abstract

Circumstance monitoring, a recently coined termed defines the collection of data reflecting the real network working environment of in-service equipment. This ideally complete data set should reflect the elements of the electrical, mechanical, thermal, chemical and environmental stress factors present on the network. This must be distinguished from condition monitoring, which is the collection of data reflecting the status of in-service equipment. This contribution investigates the significance of considering circumstance monitoring on diagnostic interpretation of condition monitoring data. Electrical treeing partial discharge activity from various harmonic polluted waveforms have been recorded and subjected to a series of machine learning techniques. The outcome provides a platform for improved interpretation of the harmonic influenced partial discharge patterns. The main conclusion of this exercise suggests that any diagnostic interpretation is dependent on the immunity of condition monitoring measurements to the stress factors influencing the operational conditions. This enables the asset manager to have an improved holistic view of an asset's health.