OPEN DISTRIBUTION DEVICE OF ELECTRIC STATION WITH SIX UNITS OF GENERATOR-TRANSFORMER, SEVEN LINES AND AUTOTRANSFORMER OF COMMUNICATION Russian patent published in 2021 - IPC H02B5/00 H02B1/24 H02B13/65 H02H9/00 

FIELD: electrical equipment.

SUBSTANCE: invention relates to electrical engineering, namely, to open switchgear devices (OSD) of electric stations. Switchgear of electric station with six units of generator-transformer, seven lines and autotransformer of communication comprises first to fifteenth switches with disconnectors on each side, from sixteenth to twentieth switches with disconnector on one side. First disconnectors from the first to fourth switches are connected to the first busbar. First disconnect switches from the fifth to seventh switches and the second disconnector of the fourth switch are connected to the second busbar. First disconnect switches from the eighth to the eleventh switches are connected to the third busbar. First disconnect switches from the twelfth to the fourteenth switches and the second disconnector of the eleventh switch are connected to the fourth busbar. Disconnector of the first generator-transformer unit is connected to the second disconnector of the second switch and to the disconnector of the sixteenth switch. Disconnector of the first line is connected to the second disconnector of the first switch and to the first disconnector of the fifteenth switch. Disconnector of autotransformer is connected to the second disconnect switches of the eighth and fifteenth switches. Second disconnect switches from the fifth to the seventh switches are connected to disconnect switches of the eighteenth to the twentieth switches. Twenty-first switch is connected in series with sixteenth switch, and its disconnector is connected to connection point of disconnector of second line with second disconnector of ninth switch. Twenty-second switch is connected in series with the seventeenth switch, and its disconnector is connected to the connection point of the disconnector of the second generator-transformer unit with the second disconnector of the tenth switch. Twenty-third switch is connected in series with the eighteenth switch, and its disconnector is connected to the point of connection of the fourth line disconnector to the second disconnector of the twelfth switch. Twenty-fourth switch is connected in series with nineteenth switch, and its disconnector is connected to disconnector of fourth unit of generator-transformer and to second disconnector of thirteenth switch. Twenty-fifth switch is connected in series with the twentieth switch, and its disconnector is connected to the disconnector of the sixth line and to the second disconnector of the fourteenth switch.

EFFECT: technical result of invention is higher reliability of device in case of failure in disconnection of short-circuit at connection or short-circuit in both sides failure type of any of switches, as well as when they are in repair.

1 cl, 1 dwg