지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Most transformers use insulating and cooling fluids derived from petroleum crude oil, but mineral oil has some possibility of environmental pollution and fire with explosion. vegetable oil fluids extracted from seed has superior biodegradation and fire-resistant properties including an exceptionally high fire point enhancing fire safety. In this study, it is aimed at the practicality of substituting natural ester dielectric fluid for mineral oil in liquid insulation system of transformers. As a rise in coil winding temperature has a direct influence on transformer life time, it is important to evaluate the temperature rise of coil winding in vegetable oil in comparison with mineral oil. Four transformers for the test are designed with 10KVA, 13.2㎸, one phase unit. The temperature are directly measured in insulating oil of these transformers with the two sorts of natural ester and mineral oil dielectric fluid respectively. Experiment for aging carry out two means. First means remained 120℃ that transformer of mineral oil were operated at 185% load. Second means is that insulating oils of two natural ester and mineral oil were aged by thermal cycles repeating from 30℃ to 120℃. For the heating, Transformers were operated at 185% load. For the cooling, cooling system was operated in the chamber. Samples were analyzed at 42, 63, 93, 143, 190, 240 300cycles. Analysis contents are dielectric strength, total acid value. Mineral oils compared results of first means with results of second means. And compared two sort natural esters respectively with mineral oil in second means.
목차
Abstract
1. 서론
2. 본론
3. 결론
감사의 글
참고문헌
저자소개
참고문헌 (7)
참고문헌 신청
William H.Bartley / 2002 / Life Cycle Management of Utility Transformer Assets :10~11
C. Patrick McShane / 2001 / Relative Properties of the New Combustion -resist Vegetable-oil-based Dielectric Coolant for Distribution and Power Transformers / IEEE T&A 37(4):1132~1139
C.P. McShane / 1996 / Fire Resistant Natural Ester Dielectric Fluid and Novel Insulation System for Its Use / IEEE/PES Transmission & Distribution Conference :15~16
M. Krins / Influence of Carbon Particles on the Breakdown Voltage of Transformer Oil / ICDL Conference :15~16
R.Hansoka / 1993 / positive Breakdown Mechanism in Transformer Oil subjected to a Non-Uniform DC Field / T. EEE Janpan 113(7):518~526
C. Patrick McShane / 2001 / Relative Properties of the New Combustion -resist Vegetable-oil-based Dielectric Coolant for Distribution and Power Transformers / IEEE T&A 37(4):1132~1139
C.P. McShane / 1996 / Fire Resistant Natural Ester Dielectric Fluid and Novel Insulation System for Its Use / IEEE/PES Transmission & Distribution Conference :15~16
M. Krins / Influence of Carbon Particles on the Breakdown Voltage of Transformer Oil / ICDL Conference :15~16
R.Hansoka / 1993 / positive Breakdown Mechanism in Transformer Oil subjected to a Non-Uniform DC Field / T. EEE Janpan 113(7):518~526
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UCI(KEPA) : I410-ECN-0101-2013-560-000618828