POWER TAKEOFF SYSTEM FROM CURRENTS OF THREE-PHASE HIGH-VOLTAGE OVERHEAD TRANSMISSION LINE Russian patent published in 2011 - IPC H02J3/00 H02H3/08 

FIELD: electricity.

SUBSTANCE: power takeoff system from currents of phase conductors (1, 2 and 3) installed on single-circuit supports (4) with transverse cross beam (5) includes primary converter (6), rectifier diode bridge (7), piece of coaxial cable (8), which connects the output of primary converter to input of rectifier diode bridge (7) the output of which is connected to input of voltage stabiliser (9) the output terminals of which are connected to in-parallel connected load (10) and storage battery (11). Primary converter is made in the form of multi-turn coil (12) from insulated copper wire, which is fixed on insulator (13) on single-circuit support below transverse cross beam at intersection point of circular arc formed around the centre at the point of the half of distance between phase wires (2) and (3) along transverse cross beam, and vertical line drawn from intersection point of vertical part of support and transverse cross beam; at that, longitudinal axis of coil is directed towards wire (3) which is located at larger distance from the point at which there fixed is coil, and perpendicular to direction towards the second wire (2) from the point at which the coil is fixed. Current flowing in wires (1, 2 and 3) induces U voltage at the coil output, which as per superposition method consists of three components each of which is formed with phase current in one of wires of high-voltage transmission line, which are installed on single-circuit supports (4).

EFFECT: increasing efficiency of the system and simplifying the design.

3 cl, 1 dwg