Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Reduction of the Electric Field Concentration at the Triple Junction of the Vacuum Interrupter by Using the Application of Functionally Graded Material

기능성 경사 재료의 적용을 통한 진공 인터럽터의 삼중점 전계 완화

  • Received : 2015.09.14
  • Accepted : 2015.09.18
  • Published : 2015.10.01
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Abstract

A vacuum Interrupter (VI), a core part that composes the breaking part of medium-voltage vacuum circuit breaker (VCB), has the excellent insulation performance and arc-extinguishing capability. $SF_6$ gas had been used for the external insulation of VIs since the dielectric strength of $SF_6$ gas is superior to that of other insulation gases. However, because of environmental problems related with global warming, a solid-insulated technology was recently researched. The functionally graded material (FGM), as changing spatially the distribution of the relative permittivity inside an insulator, can reduce the electric field stress at the specific region. Especially, the external insulation performance of the VI with the molded FGM insulator is greatly improved as compared with that of the existing VI or the VI with a new external shield. In this paper, the effectiveness of this FGM insulator is verified by the numerical simulation.

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References

  1. T. Shioiri, J. Sato, T. Ozaki, O. Sakaguchi, T. Kamikawaji, M. Miyagawa, M. Homma, and K. Suzuki, Conf. on Electr. Insul. and Dielec. Phen. (Albuquerque, USA, 2003) p. 341.
  2. T. Rokunohe, Y. Yagihashi, F. Endo, and T. Oomori, IEE Japan, 125, 619 (2005).
  3. Y. Miyamoto, W. A. Kaysser, B. H. Rabin, A. Kawasaki, and R. G. Ford, Functionally Graded Materials: Design, Processing and Applications (Kluwer Academic Publishers, Norwell, 1999) [DOI: http://dx.doi.org/10.1007/978-1-4615-5301-4]
  4. K. Kato, M. Kurimoto, H. Shumiya, H. Adachi, S. Sakuma, and H. Okubo, IEEE Trans. on Dielect. and Elect. Insul., 13, 362 (2006). [DOI: http://dx.doi.org/10.1109/TDEI.2006.1624281]
  5. H. J. Ju, K. C. Ko, and S. K. Choi, J. of Korean Phys. Soc., 55, 1803 (2009). [DOI: http://dx.doi.org/10.3938/jkps.55.1803]
  6. H. J. Ju, D. K. Kim, and K. C. Ko, J. Korean Inst. Electr. Electron. Mater. Eng., 25, 467 (2012).
  7. P. G. Slade, The Vacuum Interrupter: Theory, Design, and Application (CRC Press, New York, 2008)
  8. M. S. Agarwal, Proc. of 26th Int. Symp. on Discharges and Electrical Insulation in Vacuum (ISDEIV) (Mumbai, India, 2014) p. 437.