Movable switching-on and switching-off all-in-one machine

Abstract

The invention provides a movable switching-on and switching-off all-in-one machine. The main transformer and the GIS equipment are directly and hermetically connected into a whole in a hard pipe mode through the gas insulation pipeline, and the insulation distance required by an existing soft overhead line is compressed. By utilizing the hard connection structure, on the premise of ensuring reliable and stable gas insulation, the main transformer and the GIS equipment are integrally mounted on a high-voltage power transformation vehicle for transportation by matching with the wiring mode of the high-voltage outgoing line in the main transformer and the optimization of the structure and the arrangement mode of the components of the external transformer, so that the power transformation requirements of large capacity and small sites are met. According to the invention, the maximum capacity can reach 50MVA. Moreover, the main transformer and the GIS equipment are designed to be in an all-insulation connection mode, and a connecting line between the main transformer and the GIS equipment is not exposed in the air, so that the switching-on and switching-off all-in-one machine is completely not affected by severe natural climate environments and external animals, has an extremely high safety coefficient, and can meet the requirements of customers for safe and reliable performance.

Description

technical field [0001] The present application relates to the technical field of power transformers, in particular to a movable all-in-one switch and transformer. Background technique [0002] The traditional 220kV mobile high-voltage substation, when the capacity is slightly larger, is easily limited by the transportation conditions and the size of the transportation vehicle, and it is difficult to place the main transformer and high-voltage switch on a transport vehicle at the same time. The existing mobile high-voltage substation needs to separate and arrange the main transformer and HGIS equipment independently, place the main transformer on the main transformer trolley, and place the high-voltage switch HGIS on the high-voltage switch trolley. [0003] After arriving at the installation site, it is necessary to connect the oil-air bushing on the high-voltage side of the main transformer and the SF6-air bushing at the outlet of the main transformer compartment of the HGI...

AI Technical Summary

Problems solved by technology

[0005] 1. It is necessary to arrange two high-voltage substation vehicles for transportation, and they need to be connected by soft overhead lines, which cannot meet the needs of large-capacity small spaces.

[0006] 2. All bushings and connection terminals and other live connection parts are exposed in the air, which are greatly affected by the natural environment and cannot meet the needs of customers with high safety and reliability requirements.

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