가속 열 열화에 따른 환경친화형 변압기 절연물의 전기적-기계적 특성 분석

다국어 초록 (Multilingual Abstract)

Aging of transformer insulating material in natural ester insulating oil is compared to that in conventional transformer oil. Aging of insulating paper and insulating oil have been studied by performing accelerated thermal aging test. Sealed aging test vessels containing cooper, laminated core, Kraft paper and insulating oil(natural oil or mineral oil) were aged at 140℃ for 500, 1000, 1500 and 2000 hours. Insulating oils after aging are investigated with total acid number, breakdown voltage and viscosity. Also, degradation of insulating paper after aging is determined using breakdown voltage and mechanical strength. Accelerated aging studies demonstrate a slower aging rate for natural ester insulating oil compared to the rate for conventional mineral oil.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 이론 및 실험
• 3. 결과 및 검토
• 4. 결론
• 감사의 글
• 참고문헌
• 저자소개

참고문헌 (Reference)

1 "절연유-상용 주파수에서의 절연 파괴 전압 측정-시험방법" 2003

2 "전기용 셀룰로오스 페이퍼-시험방법" 2003

3 민윤홍, "저손실형 복합절연 주상변압기 개발에 관한 연구" 호서대학교

4 손명수, "변압기용 절연재료의 전기적특성에 관한 연구" 연세대학교

5 김필환, "가속 열 열화에 따른 유입 층간 절연지의 전기적 특성 분석" 22 : 73-80, 2004

6 ASTM D6871, "Standard Specification for Natural (vegetable Oil) Ester Fluids used in Electical Apparatus"

7 A.M. Emsley, "Review of chemical indicators of degradation of cellulosic electrical paper insulation in oil-filled transformers" 141 (141): 1994

8 C. Patrick Mcshane, "Relative Properties of the New Combusiton-resist Vegetable-oil-based Dielectric Coolant for Distribution and Power Transformers" 37 (37): 1132-1139, 2001

9 D. P. Stockton, "Natural ester transformer fluid: safety, reliability & environmental performance" IEEE 2007

10 William H. Bartley, "Life Cycle Management of Utility Transformer Assets" HSB 2002

11 William Il. Bartley, "Life Cycle Management of Utility Transformer Assets" HSB 2002

12 IEEE Std, "IEEE Guide for Loading Mineral Oil Immersed Transformers" IEEE Std 1995

13 C.P. McShane, "Fire Resistant Natural Ester Dielectric Fluid and Novel Insulation System for Its Use" 1999

14 Takashi Suzuki, "Characteristics of Palm Fatty Acid Ester (PFAE), a New Vegetable Based Insulating Oil for Transformers" 129 (129): 2009

15 D. Vukovic, "COMPARATIVE EVALUATION OF BREAKDOWN STRENGTH OF NATURAL ESTERS AND MINERAL OIL" 2009

16 T. Kanoh, "Analyses of Electro-Chemical Characteristics of Palm Fatty Acid Esters as Insulating Oil" 2008