This examines the issue of operability of PLC channels organized on 110 – 750 kV OHLs on which protective devices (PD) against lightning strikes are used in the form of overvoltage limiters and/or discharge devices. It is shown that the operation of PDs can under certain circumstances cause excessive disconnect of the line by phase-differential protection or directed protection during a short circuit on adjacent overhead lines (OHL), or passing an RP and/or EA command transferred on the PLC channel’s DTESC. A conclusion is drawn regarding the necessity of setting up special work for more detailed consideration of the specified issue.
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STO 56947007-33.060.40.045–2010. Guidelines for Selecting Frequencies on High-Frequency Channels on 35, 110, 220, 330, 500, and 750 kV Power Lines [in Russian].
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Translated from Élektricheskie Stantsii, No. 5, May 2017, pp. 27 – 31.
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Shkarin, Y.P. PLC Channels on Overhead Lines with Installed Lightning Overvoltage Protective Devices. Power Technol Eng 51, 473–477 (2017). https://doi.org/10.1007/s10749-017-0858-0
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DOI: https://doi.org/10.1007/s10749-017-0858-0