INDOOR SWITCHGEAR Russian patent published in 2023 - IPC H02B7/01 H02B5/06 

FIELD: switchgear production.

SUBSTANCE: indoor switchgear (SG) and can be used at power stations and high voltage substations (HV) from 110 to 330 kV, especially when erecting in a limited area for equipment placement. The HV SG contains a hall-type building with a hall for a complete switchgear with HV SF6 insulation (GIS) and a ventilated basement located under the HV GIS hall. On the long sides of the HV SG building, in opposite directions, there are line terminals from the building made of a cast HV current conductor, and from the high-voltage line (HV) supply side, the line terminals are placed inside the building, and the line terminals from the building to the HV power transformers are located in a ventilated basement. In the HV GIS hall, from the side of the HV line terminals on the overhead lines, there are: cells of the HV GIS, cabinets for monitoring the state of the HV circuit breakers and control of the SF6 density in the HV GIS, cabinets for monitoring frequency discharges of the HV GIS, used as a means of diagnosing linear outputs and cells of the HV GIS. On the opposite long side of the building in the HV GIS hall there are hardware cabinets for controlling the switching devices of the GIS, as well as for switching measuring circuits, signalling and blocking circuits, used as controls for the HV GIS cells. In the HV GIS hall, an installation opening is provided, as well as an overhead traveling crane with the ability to move elements of SF6 equipment when HV GIS is in operation.

EFFECT: creation of a design of an indoor switchgear with the possibility of implementing various wiring diagrams in a limited area for placing electrical equipment while ensuring reliability, efficiency and safety in operation.

1 cl, 3 dwg