S-transform을 이용한 배전계통의 이벤트와 변동 판별 알고리즘 개발

다국어 초록 (Multilingual Abstract)

Recently, by increasing of devices which are sensitive to power quality, the deterioration of power quality has been accelerated. For this reason, the social and economic losses are increased. So not only correct measurement and evaluation, but also countermeasure for improvement of power quality is surely necessary for both electric power supplier and consumer. In this paper, the discrimination algorithm for events and variation occurred in distribution systems using S-transform is proposed. Firstly, we review for events and variations that occur in distribution system. Next, we simulate events and variations on various conditions using ElectroMagnetic Transient Program(EMTP). For the simulation, the IEEE 13 Node Test Feeder and KEPCO"s distribution system is modeled. Finally, for the analysis, a modified wavelet transform known as S-transform is adopted to find out the characteristics of each events and variations.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 이벤트와 변동
• 3. S-transform의 개요
• 4. 이벤트와 변동의 판별 알고리즘
• 5. 시뮬레이션 및 알고리즘 검증
• 6. 결론
• 참고문헌

참고문헌 (Reference)

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5 IEEE Distribution Planning Working Group Report, "Radial distribution test feeders" 6 (6): 975-985, 1991

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10 Gomez Juan, "Effect of the overcurrent protection settings ondistributions systems on the resultant power quality" 1-4, 2005

11 Gomez Juan, "Effect of the overcurrent protection settings ondistributions systems on the resultant power quality" 1-4, 2005

12 서훈철, "Analysis of the Neutral Current for Two-Step-Type Poles in Distribution Lines" IEEE 24 : 1483-1489, 200907