Investigating the impacts of ageing and moisture on dielectric response of oil/paper insulation systems
نویسنده
چکیده
The oil/paper insulation system in a transformer degrades under various chemical, thermal and electromechanical stresses during its operation. Dielectric response measurements like the Return Voltage Measurement (RVM) and Polarisation and Depolarisation Current (PDC) measurement are currently being used for condition assessment of the insulation. In the current research project, the ageing condition and the moisture content of both paper and oil samples have been varied over a controlled range and their effects on the dielectric response measurements have been investigated. Experimental results are provided in this paper to demonstrate the effects of both ageing and moisture content of paper and oil on the RVM and PDC results.
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