SINGLE-WIRE DISTRIBUTION NETWORK Russian patent published in 2007 - IPC H02J3/00 H02H9/00 

FIELD: power supply systems for consumers disposed at long distances from power centers.

SUBSTANCE: proposed single-wire distribution network that has power supply, three-wire network connected thereto, single-phase step-down transformer, intermediate converter installed on three-wire network submain that incorporates power rectifier bridge whose inputs are connected to three-wire network and outputs, to ripple capacitor, power supply, and primary winding of single-phase intervening transformer one of whose secondary-winding leads is grounded and other one is connected through single-wire line to one of primary-winding leads of single-phase step-down transformer; other lead of the latter is grounded and its primary winding is connected in series with power thyristor assembly whose control input is connected to anode of rectifier diode; cathode of the latter is connected to secondary winding lead of disabling matching transformer whose primary winding integrated with parallel-connected protective diode is inserted in collector circuit of disabling transistor; connected to base of this transistor through current-limiting resistor is output of 2AND gate one of whose inputs is connected to pulse-width modulated generator and to rectangular-pulse generator and other one, to rectangular-pulse generator through inverting component; connected to cathode of second rectifier diode whose anode is connected to secondary winding lead of enabling matching transformer whose primary winding incorporating parallel-connected second protective anode is inserted in collector circuit of enabling transistor whose base is connected through current-limiting resistor to output of second 2AND gate; inputs of the latter are connected to pulse-width modulated generator and to rectangular-pulse generator; secondary-winding second leads of disabling and enabling transformers and leads of non-polar voltage regulator diode are connected to power thyristor assembly cathode.

EFFECT: enhanced reliability of power supply.

1 cl, 1 dwg