METHOD FOR MATCHING SYMMETRICAL FOUR-WIRE POWER TRANSMISSION LINE TO ELECTRICAL LOAD Russian patent published in 2014 - IPC H02J3/00 

Abstract RU 2520578 C1

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering and may be used for transmission of electric power to consumers through a non-uniform four-wire power transmission line. Matching of the non-uniform four-wire power transmission line to electrical load is attained in result of fulfilment of certain conditions including comparison of actual (measured at the site in real time mode) and reference (determined by means of special software) resistances of the generalised loads and voltages at the end of non-symmetrical section included in the non-uniform four-wire power transmission line or currents coming to the generalised loads. Input data on voltages, currents and frequency at the non-symmetrical uniform sections included into the line composition can be obtained through the interface unit, or sensors made in the form of voltage and current transformers or in the form of voltage dividers and alternating current shunts, spectrum analysers and frequency meters. In result of the input data processing control signals are generated for adjustment bodies, which may be represented by constant-voltage regulators of power transformers, chokes, three-phase devices and single-phase devices that generate current and voltage such as capacitor banks, three-wire (without the fourth wire from the neutral line of the power source or load) generalised loads consisting of step-down transformers, which primary and secondary windings are wye/wye-connected with neutral power lead or delta/wye-connected with neutral power lead.

EFFECT: increased efficiency of the method.

3 cl, 8 dwg

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RU 2 520 578 C1

Authors

Kozlov Viktor Aleksandrovich

Bol'Shanin Georgij Anatol'Evich

Dates

2014-06-27Published

2012-11-08Filed