For citations:

Romaniuk F.A., Rumiantsev V.Yu., Rumiantsev Yu.V., Dziaruhina A.A. Formation of the Signal Amplitude in Digital Relay Protection Devices when the Frequency Deviates from the Nominal One. ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations. 2026;69(2):99-109. (In Russ.) https://doi.org/10.21122/1029-7448-2026-69-2-99-109