Calculating discretization step of controlled values in relay protection communication channels
Journal: VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES MARINE ENGINEERING AND TECHNOLOGIES
Year: 2022

In relay protection devices with information digital processing the input controlled values are the currents and voltages of the protected object received from traditional measuring transformers, which are converted into voltage signals using appropriate converters. To limit the frequency spectrum these signals are subjected to preliminary analog filtering, after which they are discretized in time with a desired step Δt and are quantized by level. The difference between adjacent discrete values