Influence of Paper Ageing on Transformer Failure
Ageing of paper insulation is a key parameter which determines the end of life for transformers. Much research has been conducted in trying to establish where the end of life …
Read MoreAgeing of paper insulation is a key parameter which determines the end of life for transformers. Much research has been conducted in trying to establish where the end of life …
Read MoreIntroduction Power transformer insulation serves a vital purpose of providing dielectric protection to the transformer. Solid insulation is wrapped around the winding conductors, usually in thin layers. During service, winding …
Read MoreManaging a large fleet of ageing assets has become a technical challenge faced by many electricity utilities in developed countries. Asset managers are increasingly interested in techniques that can …
Read MoreA considerable amount of power transformers in operation do not own Original Equipment Manufacturer (OEM) technical support. It is desirable and feasible to obtain the related design information by interpreting …
Read MoreAt the University of Queensland we have always focused on higher degree research training. In the recent past, a number of our students have graduated with their PhDs and MPhils …
Read MoreIntroduction The failure of transformers can result in safety issues and economic losses. Although FRA is widely used to detect mechanical winding deformation, the success of this technique lies in …
Read MoreThe prebreakdown and breakdown phenomenon in liquids is termed as ‘Streamer’. To better understand the mechanism of liquid breakdown, we need to have deep insights into the streamer process, which …
Read MorePartial discharge (PD) detection is commonly used for power transformer diagnosis. During PD process, electromagnetic emission, acoustic emission and optical emission can be detected, associated with chemical traces left simultaneously …
Read MoreIntroduction Transformer tank vibration mainly originates from the core and windings vibration, and they can be easily acquired. Therefore, the vibroacoustic signals of a transformer tank are widely adopted to …
Read MoreDetermination and optimisation of the winding hot-spot temperature is essential for managing the loading capability and thermal ageing of transformers. The liquid flow in the various winding cooling ducts directly …
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