HIGH-FREQUENCY PATH CIRCUIT THROUGH A POWER TRANSMISSION CABLE LINE Russian patent published in 2020 - IPC H04B3/54 

FIELD: electrical communication engineering.

SUBSTANCE: invention relates to the field of electric communication and can be used in arrangement of high-frequency channels for transmitting information on phase conductors of cable power lines (CL) without transposition of cable screens in CL. According to the invention, the high-frequency path circuit on the power transmission cable line with the high-voltage cables screens grounding on one side without their transposition contains a high-frequency cable, output of which is connected to input of connection device, and output of connection device is connected to phase of one of high-voltage cables of power transmission line, on open end of screens of cable power transmission line additionally includes two-terminal device, one output of which is connected to insulated screen of high-voltage cable of power transmission line, and the other output is connected to grounding circuit for at least one high-voltage cable of power transmission line, wherein electric resistance between terminals of the two-terminal device at the industrial frequency of 50 Hz is not less than 500 kOhm, and within the working frequency band of the high-frequency communication channel – not more than 10 Ohm. Circuit LC can be used as two-terminal device.

EFFECT: high operational reliability and broader possibility of creating high-frequency channels.

1 cl, 4 dwg