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Leakage Currents of Zinc Oxide Surge Arresters in 22 kV Distribution System Using Thermal Image Camera

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DOI: 10.4236/jpee.2014.24095    3,791 Downloads   4,532 Views   Citations

ABSTRACT

Zinc Oxide (ZnO) surge arresters (SAs) experience thermal runaway when the temperature exceeds the acceptable limit. This phenomenon is associated with the increase in resistive leakage current due to degradation. This paper presents the electrical performance of ZnO SAs in 22 kV distribution systems using thermal image camera under the power frequency AC operating voltages. When ZnO surge arresters are installation takes a long time in distribution system over more than 5 years. For the experimental study, as ZnO installation takes a long time over 6 years the leakage current is 63.9 mA, temperature differences were measured over a period of time over 14 degree Celsius. This data will be useful as a guideline for solving problems and reducing power loss from leakage current. Moreover, it will be useful in predicting lifetime of ZnO SAs.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Thipprasert, W. and Sritakaew, P. (2014) Leakage Currents of Zinc Oxide Surge Arresters in 22 kV Distribution System Using Thermal Image Camera. Journal of Power and Energy Engineering, 2, 712-717. doi: 10.4236/jpee.2014.24095.

References

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[3] Nishiwaki, S., Kimura, H., Satoh, T., Mizoguchi, H. and Yanabu, S. (1984) Study of Thermal Runaway/Equivalent Prorated Model of a ZnO Surge Arrester. IEEE Transaction on Power Apparatus and Systems, PAS-103, 413-421. http://dx.doi.org/10.1109/TPAS.1984.318260
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[5] (2004) International Standard of Surge Arrester IEC60099-4 Edition 2.1:2004 Consolidated With Amendment 1: 2006 Section 6.9 Operating Duty, Section 10 Test Requirement on Polymer-Housed Arresters and Annex B Test to Verify Thermal Equivalency Between Complete Arrester and Arrester Section, IEC60099-4.

  
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