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Investigation And Evaluation Of Local Liquid Dielectric For Power Transformer Insulation
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This work investigates and evaluates local liquid dielectric for insulation of power transformers. Considering the importance of transformer insulation the investigation is borne out of the need to develop the capacity for local production of transformer dielectric. Natural esters of vegetables origin have been found to have the suitable dielectric properties for them to be used as replacement dielectric fluids for mineral oil. However vegetable oil has poor resistance to oxidation, hence the need for inhibiting the vegetable oil for use as insulation fluid. In this work inhibited locally extracted soybean oil (soybean oil treated with antioxidant) is subjected to accelerated ageing in order to determine its suitability as dielectric fluid. The properties of the soybean oil is investigated against standard and compared with those of mineral oil. The
investigated soybean meets acceptability specifications since the measured flash point is 2570C,
the pour point is -150C, the acidity is low at 0.0027mgkoH/mg, its dissipation factor after ageing
is 12.11 x 10-3 (which is within recommended units) and showed a high dielectric breakdown voltage (59.08kV). Results obtained showed that the inhabited soybean oil has properties comparable to those of mineral oil and is suitable for use as transformer dielectric fluid.
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CHAPTER ONE - [ Total Page(s): 1 ]CHAPTER ONEINTRODUCTION1.0. Background of the StudyElectrical
faults that occur in power transfers accounts for over fifty percent of
transformer failure’s expenditures . Fifty percent of transformer
failure’s expenditure is caused by insulation, dielectric, and
oil-related faults [1]. The need for better dielectrics and transformer
oils for insulation is unequivocal. In a liquid-filter transformer, the
insulator liquid plays an important function by providing both the ... Continue reading---
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CHAPTER ONE - [ Total Page(s): 1 ]CHAPTER ONEINTRODUCTION1.0. Background of the StudyElectrical
faults that occur in power transfers accounts for over fifty percent of
transformer failure’s expenditures . Fifty percent of transformer
failure’s expenditure is caused by insulation, dielectric, and
oil-related faults [1]. The need for better dielectrics and transformer
oils for insulation is unequivocal. In a liquid-filter transformer, the
insulator liquid plays an important function by providing both the ... Continue reading---
ABSRACT -- [Total Page(s) 1]
Page 1 of 1
ABSRACT -- [Total Page(s) 1]
Page 1 of 1