Investigation of the Effect of Impulse Voltage to Flashover by Using Water Jet

Authors: Harun Gülan, Muhsin Tunay Gencoglu, Mehmet Cebeci

Abstract:

The main function of the insulators used in high voltage (HV) transmission lines is to insulate the energized conductor from the pole and hence from the ground. However, when the insulators fail to perform this insulation function due to various effects, failures occur. The deterioration of the insulation results either from breakdown or surface flashover. The surface flashover is caused by the layer of pollution that forms conductivity on the surface of the insulator, such as salt, carbonaceous compounds, rain, moisture, fog, dew, industrial pollution and desert dust. The source of the majority of failures and interruptions in HV lines is surface flashover. This threatens the continuity of supply and causes significant economic losses. Pollution flashover in HV insulators is still a serious problem that has not been fully resolved. In this study, a water jet test system has been established in order to investigate the behavior of insulators under dirty conditions and to determine their flashover performance. Flashover behavior of the insulators is examined by applying impulse voltages in the test system. This study aims to investigate the insulator behaviour under high impulse voltages. For this purpose, a water jet test system was installed and experimental results were obtained over a real system and analyzed. By using the water jet test system instead of the actual insulator, the damage to the insulator as a result of the flashover that would occur under impulse voltage was prevented. The results of the test system performed an important role in determining the insulator behavior and provided predictability.

Keywords: Insulator, pollution flashover, high impulse voltage, water jet model.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3346761

References:

[1] K.J. Lloydand, H.M. Schneider, “Insulation for Power Frequency Voltage. Transmission Line Reference Book (345 kV and Above)”, Electric Power Research Institute, Palo Alto, CA, USA, 1982, pp.463-501.
[2] B. Hampton, “Flashover Mechanism of Polluted Insulation”, Proc. IEE 111, pp. 985-990, 1964.
[3] F. Obenaus, “Kriechweguberschlag von Isolatoren mit Fremdschichten”, Elektrizitatsirtschaft 24 pp. 878-882, 1960.
[4] T.J. Looms, “Insulators for High Voltage”, Peter Peregrinus Ltd., London, United Kingdom, 1988.
[5] F. Obenaus, “Contamination flashover and creepage path length”, Dtsch. Elektrotechnik 12, pp. 135-136, 1958.
[6] F.A.M. Rizk, “Mathematical models for pollution flashover”, Electra 78, pp. 71-103, 1981.
[7] R. Wilkins, “Flashover voltage of high-voltage insulators with uniform surface-pollution films”, Proc. IEE 116, pp. 457-465, 1969.
[8] L.L. Alston, S. Zoledziowski, “Growth of discharges on polluted insulation”, Proc.IEE 110, pp. 1260-1266, 1963.
[9] S. Gopal, Y.N. Rao, “Flashover phenomena of polluted insulators”, Proc. IEE 131, pp.140-143, 1984.
[10] R. Sundararajan, R.S. Gorur, “Dynamic arc modeling of pollution flashover ofinsulators under dc voltage”, IEEE Trans. Electr. Insul. 26, pp. 209-218, 1993.
[11] N. Dhahbi-Megriche, A. Beroual, “Flashover dynamic model of polluted insulators under ac voltage”, IEEE Trans. Dielectr. Electr. Insul. 7, pp. 283-289, 2000.
[12] N.B. Prakash, M. Parvathavarthini and R. Madavan, “Mathematical Modeling on AC Pollution Flashover Performance of Glass and Composite Insulator”, J Electr Eng Technol. 2015; 10(4): pp. 1796-1803.
[13] T. Chihani, A. Mekhaldi, A. Beroual, M. Teguar and D. Madjoudj, “Model for Polluted Insulator Flashover under AC or DC Voltage”, IEEE Transactions on Dielectrics and Electrical Insulation Vol. 25, No. 2, pp. 614-622, 2018.
[14] Y. A. Bencherif, A. Mekhaldi and M. Teguar, “Modeling of a high voltage insulator under uniform and non uniform pollution”, 2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, Montreal, QC, pp. 761-766, 2012.
[15] C. Badachi, P. Dixit, “Prediction of pollution flashover voltages of ceramic string insulators under uniform and non-uniform pollution conditions”, Journal of Electrical Systems and Information Technology Volume 3, Issue 2, pp. 270-281, 2016.
[16] Rumeli, A., “Kirli izole yüzeylerde deşarjların yayılımı ve atlama”, Elektrik Mühendisliği, 199, s. 419-427, 1973.
[17] Kind, D. and Feser, K., High-Voltage Test Techniques, Vieweg/SBA Publications, New Delhi, 1999.
[18] IEC 60060-1. High-voltage test techniques, Part:1 General definitions and test requirements.
[19] EN 60060-2. High-Voltage Test Techniques, Part:2 Measuring systems, European Standards.
[20] Lucas, J.R., High-Voltage Engineering, Departmant of Electrical Engineering of University of Moratuwa Publications, Sri Lanka, 2001.
[21] A. N. Etobi, N. M. Nor, S. Abdullah, N. Eng Eng and M. Othman,. “Characterizations of a Single Rod Electrode under High Impulse Currents with Different Polarities”, 1st International Conference on Electrical Materials and Power Equipment, Xi'an, China, pp. 70-75, 2017.
[22] U. K. Kalla, R. Suthar, K. Sharma, B. Singh and J. Ghotia, “Power Quality Investigation in Ceramic Insulator”, IEEE Transactions on Industry Applications, Vol. 54, No. 1, pp. 121-134, 2018.
[23] M. Costea, I. Băran, “The Behavior of High Voltage Insulators during the Up-and-Down Procedure”, International Conference on Energy and Environment (CIEM), Bucharest, Romania, pp.11-15, 2017.
[24] Kuffel, E., Zaengl, W.S. and Kuffel J., High-Voltage Engineering Fundamentals, Newnes, Toronto, 2000.
[25] Cavallus, N.H., High Voltage Laboratory Planning, Haefely, Basel, 1988.
[26] Özkaya, M., Yüksek Gerilim Tekniği, Cilt 2, Birsen Yayınevi, İstanbul, 1996.
[27] M.A.B. Sidik, H. Ahmad, I. Ullah, M.N.R Baharom, H.M. Luqman and Z. Zainal, “Small Scale Test Model to Study Impulse Flashover and Attachment Pattern of Protected Building Structures”, International Conference on Electrical Engineering and Computer Science (ICECOS), Palembang, Indonesia, pp. 316-320, 2017.
[28] X. Han, J. Li, L. Zhang and Z. Liu, “Partial Discharge Characteristics of Metallic Protrusion in GIS under Different Lightning Impulse Voltage Waveforms Based on UHF Method”, IEEE Transactions on Dielectrics and Electrical Insulation Vol. 24, No. 6, pp. 3722-3729, 2017.
[29] M. A. Douar, A. Beroual and X. Souche, “Creeping Discharges Features Propagating in Air at Atmospheric Pressure on Various Materials under Positive Lightning Impulse Voltage–part 1: Noise Suppression Using the Discrete Wavelet Transform Approach”, IET Gener. Transm. Distrib., Vol. 12 Iss. 6, pp. 1417-1428, 2018.
[30] Z. Zhang , D. Wei, D. Zhang, J. Zhu and C. Li. “Study on the Lightning Strike Discharge Characteristics of Switchgear Air Gap at Low Air Pressure Condition”, IET Gener. Transm. Distrib., Vol. 12 Iss. 9, pp. 2148-2154, 2018.
[31] Naidu, M.S. and Kamaraju, V., High-Voltage Engineering, McGraw-Hill, New York, 1995.
[32] J. M. Koutsoubis, J. W. Gray, N. D. Kokkinos and D. N. Kokkinos, “Development and Testing of a 200kA, 10/350μs Lightning Impulse Current Generator Switch Module”, IEEE 21st International Conference on Pulsed Power (PPC), Brighton, UK, p 1-4, 2017.