Abstract
Mitigation and analysis of very fast transient over voltages (VFTO) is very important in gas-insulated substations (GIS). In this paper a power transformer rating of 1500 MVA in 1000 kV GIS has been considered and different techniques for mitigation and analysis of VFTOs at the transformer are applied and the same results are analyzed by the application of discrete wavelet transform (DWT) as wavelet transform gives the accurate results. The proposed system has been designed with Mat Lab software platform and the system is simulated to evaluate the peak values of VFTOs generated at the both at transformer and open end of the transformer with and without RC filter, ferrite ring, and a nonocrystilline. The results show that the peak value of VFTOs can be considerably reduced by introducing RC filter ferrite ring and nano crystalline methods. The outcomes are explored to wavelet transform for transient information. By the application of wavelet transform it has concluded that an exact measurement VFTOs can be obtained and is shown in the results.
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References
Tiechen, Lu., Zhang Bo, “Calculation of Very Fast Transient Overvoltage in GIS”, IEEE/PES Conference on Transmission and Distribution, Vol. 4 (2000), 1–5.
Boggs S.A., et al., “Disconnect switch induced transients and trapped charge in gas insulated”, IEEE Trans. on Power Apparatus and Systems, vol. 101, no. 6, pp. 3593–3602.
Kamakshaiah, “Simulation and measurement of very fast transient over voltages in a 245 kv gis and research on suppressing method using ferrite rings” ARPN Journal of Engineering and Applied Sciences, vol. 5, No. 5 (2010). 88–95.
Vinod Kumar, V., Joy Thomas, M., and Naidu, M.S., “VFTO Computation in a 420 kV GIS”, Eleventh International Symposium on High Voltage Engineering, (Conf. Publ. No. 467) (1999) 319–322.
Riechert, U.; Krüsi, U.; Sologuren-Sanchez, D.: “Very Fast Transient Overvoltages during Switching of Bus-Charging Currents by 1100 kV Disconnector”, CIGRÉ Report A3-107, 43rd CIGRÉ Session (2010) 22–27.
Shibuya, Y., Fuji, S., and Hosokawa, N., “ Analysis of very fast transient over voltage in transformer winding”, IEE Proc. Generation transmission and distribution, Vol. 144, No. 5 (1997) 461–468.
Boggs, S.A., Chu F.Y and Fujimoto N., ‘Disconnect Switch Induced Transients and Trapped charge in GIS’, IEEE Transactions on Power Apparatus and Systems, Vol. PAS-101 (1998) 3593–3596.
Nobuhiro Shimoda, H., Murase, I. , Oshima, H., Aoyagi, I. , Miwa, “Measurement of transient voltages induced by disconnect switch operation”, IEEE Transactions on Power Apparatus and Systems, PAS-104(1985) NO. 1.
Del Pozo, M.D.; Esteban, D.A.; Issouribehere, P.E.; Barbera, G.A.; Funes, A.; Ledesema, A.,“Field measurements and modeling of high frequency transients during disconnect switch operations in EHV Substations. Assessment of their effects on Current Transformers”, CIGRÉ Report A3-207, 43rd CIGRÉ Session (2010) 22–27, Palais des Congrès, Paris, France.
Ozawa, J., Lalot, A., Sabot, J., Kieffer, S.W. mRowe, “Preventing earth faults during switching of disconnectors in gas insulated voltage Transformer”, IEEE Transactions on Power Delivery, vol. 1 (1986). 434–441.
Martinez, J.A, P., Iravani, R., Keri, A., Povh, D., “Modelling guidelines for very fast transients in Gas Insulated substations”, IEEE working group modeling and analysis of system transients, Vol. 11, no. 4 (1988) 2028–2047. Alvinson et al.
Hosokawa, N.,‘Very fast Transient Phenomena associated with Gas Insulated Substations’, CIGRE (1996) 33–53.
Bewley, L.V., NY ‘Travelling waves on Transmission system’, Dover pub Inc. Z. Haznadar,
Cariimavoid, S., Mahmutdehajid, R., “More accurate modeling of Gas insulated components in digital simulations of very fast transients”, IEEE Transactions on Power delivery, Vol. 7, NO. 1 (1963) 434–441.
Ogawa S., Hanginomori E., ‘Estimation of Restriking Transient overvoltage on Disconnecting Switch for GIS’, IEEE Tans. P.S., Vol. PWRD-1, No. 2 (1986). 95–101.
Witzman R., ‘Fast Transients in Gas Insulated substations—Modelling of Different GIS components’, Fifth ISH, Braunschweig (1998) 12.06. Working Group 33/13–09, ‘Very Fast Transient Phenomenon Associated With GIS, CIGRE.
Acknowledgments
I would like to express my gratitude to my Ph.D. guide, Prof. Dr M Surya Kalavathi madam garu, who encouraged me to pursue this work and taught me the art of VFT over voltages in GISs. It is my pleasure to acknowledge role of my co-author D. Prabhavathi in completion of this work.
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Prakasam, K., Surya Kalavathi, M., Prabhavathi, D. (2017). Mitigation and Analysis of Very Fast Transient over Voltages (VFTOs) of Transformer in 1000 KV Gas-Insulated Substation (GIS) Using Wavelet Transform. In: Singh, R., Choudhury, S. (eds) Proceeding of International Conference on Intelligent Communication, Control and Devices . Advances in Intelligent Systems and Computing, vol 479. Springer, Singapore. https://doi.org/10.1007/978-981-10-1708-7_8
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DOI: https://doi.org/10.1007/978-981-10-1708-7_8
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