Abstract: This article discusses the communication links used in power system relay protection to exchange discrete signals generated by the dry contacts. It explains why fiber-optic communication links, traditionally deemed as absolutely immune to external electromagnetic impacts, are not adequate for high-power electromagnetic impacts. In order to improve the reliability and immunity to high-power electromagnetic impacts, especially to HEMP, in this article, it is suggested to use reed switch based high-voltage insulating interfaces (“gerkotrons”).
Keywords: High Altitude Electromagnetic Pulse (HEMP), Digital Protective Relays – DDR, Communication Link.
Title: High-Voltage Link for Transmitting Discrete Commands in Relay Protection, Automation and Control Systems
Author: Vladimir Gurevich
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
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