OPEN DISTRIBUTION DEVICE OF ELECTRIC STATION WITH THREE UNITS OF GENERATOR-TRANSFORMER, FIVE LINES AND AUTOTRANSFORMER OF COMMUNICATION Russian patent published in 2020 - IPC H02B5/00 

FIELD: electrical equipment.

SUBSTANCE: invention is related to electric engineering, namely to open distribution devices (ODD) of electric stations, and can be used for distribution of generated electric energy. Technical result is achieved by the fact that in the open-type switchgear of a power plant with three units, a transformer-generator, five lines and an autotransformer of communication, comprising a first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh and twelfth switches with a disconnector on one side, there are thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third and twenty-fourth switches, as well as with disconnector on one side, wherein disconnectors of first, second and third switches are connected to first busbar, disconnectors of fourth, fifth and sixth switches are connected to second busbar, disconnector of autotransformer is connected to disconnectors of seventh and eighth switches, disconnector of first generator-transformer unit is connected to disconnectors of ninth and tenth switches, disconnector of the second unit is connected to the disconnector of the eleventh switch and to the disconnector of the twenty third switch, connected in series with the third switch, disconnector of the third unit is connected to the disconnector of the twelfth switch and to the disconnector of the twenty fourth switch, connected in series to the sixth switch, disconnector of first line is connected to disconnectors of thirteenth and fourteenth switches, connected in series to first and seventh switches, respectively, disconnector of the second line is connected to disconnectors of the fifteenth and sixteenth switches, connected in series to the fourth and eighth switches, respectively, the third line disconnector is connected to disconnectors of the seventeenth and eighteenth switches, connected in series to the second and ninth switches, respectively, fourth line disconnector is connected to disconnect switches of the nineteenth and twentieth switches, connected in series to the fifth and tenth switches, respectively, disconnector of fifth line is connected to disconnectors and twenty first and twenty second switches connected in series with eleventh and twelfth switches, respectively.

EFFECT: technical result consists in excluding the following: 1) disconnection of enlarged unit in case of failure in disconnection of circuit breakers between unit and line in case of short circuit (SC) on line or failure of said circuit breaker of short circuit in both sides type; 2) full short-term disconnection of the chain, in which two enlarged units and one line are connected, in case of failure in disconnection of any of switches between unit and line of this chain at short circuit (SC) on line or its failure type short circuit in both sides during repair of one of two switches, connecting one unit to bus.

1 cl, 1 dwg