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논문 기본 정보

자료유형
학술저널
저자정보
Fuping Zeng (Wuhan University) Ju Tang (Wuhan University) Yanbin Xie (Shiqu Power Supply Company) Qian Zhou (State Grid Chongqing Electric Power Company) Chaohai Zhang (Wuhan NARI)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.10 No.4
발행연도
2015.7
수록면
1,786 - 1,795 (10page)

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초록· 키워드

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It is common practice to identify the insulation faults of GIS through monitor the contents of SF<SUB>6</SUB> decomposed components. Partial discharges (PD) could lead to the decomposition of SF<SUB>6</SUB> dielectric, so new reactions usually occur in the mixture of the newly decomposed components including traces of H₂O and O₂. The new reactions also cause the decomposed components to differ due to the different amounts of H₂O and O₂ even under the same strength of PD. Thus, the accuracy of assessing the insulation faults is definitely influenced when using the concentration and corresponding change of decomposed components. In the present research, a needle-plate electrode was employed to simulate the PD event of a metal protrusion insulation fault for two main characteristic components SO₂F₂ and SOF₂, and to carry out influence analysis of trace H₂O and O₂ on the characteristic components. The research shows that trace H₂O has the capability of catching an F atom, which inhibits low-sulfide SFx from recombining into high-sulfide SF<SUB>6</SUB>. Thus, the amount of SOF₂ strongly correlates to the amount of trace H₂O, whereas the amount of SO₂F₂ is weakly related to trace H₂O. Furthermore, the dilution effect of trace O₂ on SOF₂ obviously exceeds that of SO₂F₂.

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Abstract
1. Introduction
2. Decomposition Experiment and Quantitative Measurement
3. Influence of H₂O and O₂ on Characteristic Components
4. The influence Mechanism of H₂O and O₂ on the Characteristic Decomposed Components
5. Conclusion
Reference

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