VOLTAGE BOOSTER FOR THREE-PHASE TRANSMISSION POWER LINE Russian patent published in 2014 - IPC H02M5/293 

FIELD: electricity.

SUBSTANCE: voltage booster consists of an electronic return current choke installed in the line run separation at the power transmission tower where voltage in its wires complies with the lowest permitted value of 198V for each phase and of a switchable energy accumulator installed at the terminal of a power transmission line. At that current passage through the electronic return current choke and accumulation of energy in the switchable energy accumulator take place in the first and third quarters of harmonic voltage periods in the electric mains while discharge of energy accumulating elements into the terminal load of the power transmission line is made with a certain time delay in the second and fourth quarters of harmonic voltage periods in the electric mains. The switchable energy accumulator is assembled as per the bridge scheme of two conductors - phase and zero conductors - connected in parallel and circuits of two in-series accumulating LC-lines of delay and bidirectional transistor commutator. Free ends of accumulating LC-lines of delay in these circuits are connected respectively to the phase and zero conductor of the mains and in the diagonal lines of the bridge scheme there is a bidirectional triode thyristor ensuring in-series connection of the accumulating LC-lines of delay in the second and fourth quarters of the mains voltage periods and their discharge into the load of the terminal zone of the power transmission line. At that control of operation of bidirectional transistor commutators in the bridge scheme, its bidirectional triode thyristor and switching transistors of the electronic return current choke is performed from the control unit of transistors and bidirectional triode thyristor.

EFFECT: improving quality of electric energy.

2 cl, 7 dwg