변압기 보호용 비율차동계전기의 고조파 영향에 관한 연구A Study on the Harmonics Effect of Ratio Differential Relay for Transformer Protection
- Other Titles
- A Study on the Harmonics Effect of Ratio Differential Relay for Transformer Protection
- Authors
- 김경철; 황영록; 고훈; 정동원; 정해성; 이동욱; 정채호; 이재윤
- Issue Date
- 2014
- Publisher
- 한국조명.전기설비학회
- Keywords
- Transformer Protection; Ratio Differential Relay; Harmonics; Inrush Xurrent
- Citation
- 조명.전기설비학회논문지, v.28, no.6, pp.99 - 105
- Journal Title
- 조명.전기설비학회논문지
- Volume
- 28
- Number
- 6
- Start Page
- 99
- End Page
- 105
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/18533
- ISSN
- 1229-4691
- Abstract
- Power transformers are applied throughout the power system to connect systems of different voltage to one another. Since a ratio differential relay offers high sensitivity in detection of internal faults in power transformers, it is widely used in the main protection system. The use of nonlinear devices such as rectifiers and other devices utilizing solid state switching have been increased in industry during recent years. For nonlinear loads, the load current is not proportional to the instantaneous voltage. This situation creates harmonic distortion on the system. The harmonic could differential relay misoperation if not recognized. This paper aims at analyzing and probing into the influences of harmonics on a ratio differential relay for power transformer protection.
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Collections - College of Science and Technology > Department of Electronic and Electrical Engineering > 1. Journal Articles
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