Correlation between Surface Conductivity and Pollution Flashover Voltage of Strain Insulator-String

Abstract:

For contamination of the medium voltage insulators XP-7 strain insulator-string, analysis of localized pollution flashover accident in recent years with a surface of insulator contamination degree of relationship, through the surface of porcelain insulator pollution layer conductivity indicators and calculation analysis on pollution flashover voltage, promote different voltage contaminated insulator under replacing the feasibility of early warning. Results showed that, the relationship between pollution flashover voltage and conductivity parameters is clear, available with microprocessor and more intuitive remote communication unit for remote monitoring and control system of early warning, reduce default phase pollution flashover accident of the power ring network of transmission lines in remote areas , enhance the stability of power load .

• Periodical: Applied Mechanics and Materials (Volume 431)
• Pages: 202-206
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.431.202
• Online since: October 2013
• Authors: Shan Li*, Jun Ping Zhang, Liang Gu, Jia De Liu
• Keywords: Conductivity, Contamination Degree, Pollution Flashover, XP-7

References

[1] G. Ramos N., M.T. Campillo. R and K. Naito, A study on the characteristics of various conductive contaminants accumulated on high voltage insulators, IEEE Trans. Power Delivery, Vol. 8, pp.1842-1850, (1993).

DOI: 10.1109/61.248293

[2] IEEE Working group on Insulator contamination. Surface resistance measurements on non-ceramic insulators, IEEE Trans. Power Deliv. Vol. 16, pp.801-805, (2001).

[3] Z. C. Zheng. Pollution flashover season and time on power transmission equipment. North China Electric Power. Vol. 2, pp.40-42, 2002, in Chinese.

[4] Masaru Ishii，Minoru Komatsubara and Ry-osuke Matsuoka et al. Behavior of insoluble materials in artificial contamination tests. IEEE Trans on D and EI, 1996, 3 ( 3).

[5] Ghosh P S and Chatterjee. Polluted insula-tor flashover model for ac voltage. IEEE Trans on D and E, 1995, 2(1).

[6] N. Li, Y.X. Lv and L.B. Niu. Research on overhead transmission line windage yaw online monitoring system and key technology. IEEE Trans. Computer and Information Application, pp.71-74, (2010).

DOI: 10.1109/iccia.2010.6141540

[7] J. Y. Li, C. X., Sun, W. X. Sima, and Q. J. Yang, Stage pre-warning based on leakage current characteristics before contamination flashover of porcelain and glass insulators, IET Gener., Transm., Distrib., vol. 3, no. 3, pp.605-615, (2009).

DOI: 10.1049/iet-gtd.2008.0604

[8] Z.C. Guan. Insulators and electric transmission and transformation equipment of external insulation. Beijing：Tsinghua University Press, Vol. 1, 2006, in Chinese.

[9] Z.Y. Zhao, Z.R. Peng, H.K. Xie. Study on suspension insulator pollution layer conductivity and leakage current field test technology. Transactions of China Electro technical Society, Vol. 12, pp.43-46, in Chinese.

[10] GB/T 4585. 2-91，Artificial pollution tests of AC high voltage insulators for systems solid-layer method.

[11] Al-Hamoudi I Y. Performance of high voltage insulators under heavy natural pollution conditions[C]/Proceedings of the 7th International Conference on Transmission and Distribution Construction and Live Line Maintenance. Columbus，OH：IEEE Conduction and Breakdown in Solid Dielectrics, pp.149-153, (1995).

DOI: 10.1109/tdcllm.1995.485032

[12] QGDW 152-2006，Pollution classification and external insulation selection for electric power system.

[13] GB/T 16434-1996, Environmental pollution classification and external insulation selection for high voltage transmission line, power plant and substation.