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논문 기본 정보

자료유형
학술저널
저자정보
Jian Wang (North China Electric Power University) Zhiyuan Wang (North China Electric Power University) Xiaoru Ni (North China Electric Power University) Sihua Liu (North China Electric Power University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.12 No.2
발행연도
2017.3
수록면
858 - 864 (7page)

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초록· 키워드

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This study aims to restrain free conducting wire-type particles which are commonly and dangerously existing within DC gas-insulated transmission lines. A realistic platform of a coaxial cylindrical electrode was established by using a high-speed camera and a partial discharge (PD) monitor to observe the motion, PD, and breakdown of these particles. The probabilities of standing or bouncing, which can be affected by the length of the particles, were also quantitatively examined. The corona images of the particles were recorded, and particle-triggered PD signals were monitored and extracted. Breakdown images were also obtained. The air-gap breakdown with the particles was subjected to mechanism analysis on the basis of stream theory. Results reveal that the lifting voltage of the wire particles is almost irrelevant to their length but is proportional to the square root of their radius. Short particles correspond to high bouncing probability. The intensity and frequency of PD and the micro-discharge gap increase as the length of the particles increases. The breakdown voltage decreases as the length of the particles decreases.

목차

Abstract
1. Introduction
2. Experimental Platform and Test Method
3. Motion Behavior of Wire Particles
4. Corona and PD
5. Characteristic of Air-Gap Breakdown Caused by Free Wire Particles
6. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2017-560-002172787