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http://dx.doi.org/10.5370/KIEE.2014.63.2.266

A Study on the Effects of I&C Systems by EMI Generating from Corona Discharge at Transformer Area  

Min, Moon-Gi (Center of Electrical and I&C Engineering, Korea Hydro & Nuclear Power Co., Ltd.)
Lee, Jae-Ki (Center of Electrical and I&C Engineering, Korea Hydro & Nuclear Power Co., Ltd.)
Park, Jin-Yeub (Center of Electrical and I&C Engineering, Korea Hydro & Nuclear Power Co., Ltd.)
Kim, Hee-Je (Center of Electrical and I&C Engineering, Korea Hydro & Nuclear Power Co., Ltd.)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.63, no.2, 2014 , pp. 266-271 More about this Journal
Abstract
The Electromagnetic Interference(EMI) generating from corona discharge of transformer area can interference the digital Instrument and Control(I&C) systems located nearby transformers. When the potential gradient of the electric field around the conductor is high enough to form a conductive region but not high enough to cause electrical breakdown to nearby objects, the EMI of corona discharge emits with the conducted and radiated noise and it interferences the signals of the I&C systems. Since digital I&C systems have an efficiency and competitive price, the analog I&C systems have been upgraded and displaced with the digital I&C systems but which have less EMI Immunity. There was no assessment to I&C systems by EMI generating corona discharge nearby transformers. When the safety-related I&C systems are installed in plants, the verification of equipment EMI should be done not in site-specific test but in test facilities. There are the need to do the site-specific EMI evaluation of corona discharge nearby transformers. This paper assesses the margin between plant emission limits and the highest composite plant emission of corona. When the non safety-related I&C systems are placed in transformer area, it suggests the appropriate radiated susceptibility level to EMI of corona discharge.
Keywords
Corona discharge; Electromagnetic intereference; EMI; EMC; EMS;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 URG, Regulatory Guide 1.180, "Guidelines for evaluating Electromagnetic and Radio-Frequency Interference in Safety-Related Instrumentation and Control System," Revision 1, pp.7-30, October 2003.
2 MIL-STD-461E, "Requirements for the control of Electromagnetic Interference characteristics of Subsystems and Equipment," pp.25-94, August 1999.
3 K. Barry and P. Keeber, "Technical Guidance for Achieving Higher Levels of Electromagnetic Compatibility for Advanced Nuclear Power Plants," EPRI TR-1021092, pp.157-163, December 2010.
4 J. Naser and P. Keebler, "Minimizing the Risk of Electromagnetic Interference in Modifying Power Plants and Mixed Control Equipment," EPRI TR-1016729, pp.113-131, December 2008.
5 Kil-Mok Shong and Young-Seok Kim, "An Analysis of UV Behavior and Shape of Detection Images Due to Corona Discharge of Insulators at 22.9kV," KIEE autumn conf., pp.215-218, 2009.
6 Man-Sik Pang, Jae-Hyeong Choi, Woo-Jin Kim, Young-Seok Kim, and Sang-Hyun Kim, "The Analysis of Corona Discharge of Surface Flashover Model for Aging Diagnosis of Power Facility," KIEE vol. 24, No. 4, pp.314-318, April 2011.   과학기술학회마을   DOI   ScienceOn
7 J. Shank and R.W. James, "Guidelines for Electromagnetic Interfere Testing in Power Plants," EPRI TR-102323 Revision 1, pp.29-63, January 1997.
8 J. Shank and R. Torok, "Guidelines for Electromagnetic Interfere Testing in Power Plants," EPRI TR-102323 Revision 3, pp.50-51,151 November 2004.