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This Transformer experiences aging everyday as it gets older. The aging of transformer can be detected by assessing the condition of its oil insulation. Every transformer has its own aging rate which is influenced by many factors. This paper discusses about effects of lifetime and loading factor on DGA using regression linear method. 219 sample data including DGA and transformer age were collected...
As the population of transformers in service increases and becomes older, more attentions are focused on their availability and reliability. Through decades' progress, it is undeniable that considerable advances have been achieved on the techniques of fault diagnosis and condition assessment for oil-immersed transformer, for its great importance in the whole transmission and distribution (T&D)...
Moisture in power transformer strongly influences the dielectric properties of oil-paper insulation system. The insulation paper gradually degrades over time, therefore, it is imperative to assess integral condition of oil-paper insulation for assuring a normal operation of power transformers. As a non-destructive diagnostic technique, return voltage measurement is an effective assessment method of...
Insulation systems for liquid-immersed transformers have been essentially unchanged for the last 100 years, using combinations of mineral oil and cellulosic based papers and boards. Previous papers have outlined initial work in the development and then validation of a dual-temperature method for the evaluation of the thermal capability of insulation systems. This paper will provide a comparison of...
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