A common box closed bus connection structure

Abstract

The invention discloses a new type of box-common enclosed bus bar communication structure, which comprises two sections of box-common bus bar housings provided with connection ports, and a horizontal bus bar is arranged inside the box-common bus bar shell, and the horizontal bus bar is connected to the shared box bus bar through a first connecting piece. The housing is fixed. When the two sections of the common box bus are connected, the two detachable rectangular connection shells are connected to the shell interface of the two sections of the common box bus with connection ports through the second connecting piece, and the detachable connecting busbar The horizontal bus bar at the connection port is connected by the third connecting piece; when the two sections of the closed bus bar are disconnected, remove the detachable rectangular connecting shell and the detachable connecting bus bar, and connect the sealing cover with the The shell interfaces of the two sections of the common box bus are connected through the second connecting piece; the present invention has significant advantages: the present invention uses a simple combined connection method, and can quickly realize two bus lines without changing the main structure of the common box bus Connection or disconnection between segments, less parts, easy installation, and simple maintenance.

Description

technical field [0001] The invention belongs to the technical field of a common-box closed busbar, and in particular relates to a common-box closed busbar communication structure. Background technique [0002] Common-box enclosed busbars are widely used for current transmission between the generator lead-out wires below 100MW and the low-voltage side of the main transformer, or between the low-voltage side of the factory transformer for units of 75MW and above and the high-voltage power distribution device. The closed bus of the common box can also be used for the AC and DC excitation circuit of the generator, the power used in the substation is introduced into the bus, or the power leads of other industrial and civil facilities. [0003] Since the closed bus of the common box is generally the transmission channel between the transformer and the power supply and distribution equipment or between the generator and the transformer, in some special cases, it is necessary to run...

AI Technical Summary

Problems solved by technology

There is no such type of communication structure in the conventional design. When the operation is required, two parallel sections of the common box bus section need to be removed, and then lead out by cable connection to a dedicated connecting copper busbar to connect the two sections of busbar. , it is necessary to add tens of meters of medium-voltage cables, a busbar connection box, and 12 cable terminal heads. Not only is the construction process complicated (need to use lifting equipment, make cable heads, make the installation foundation of the busbar connection box, etc.), The construction period is long (at least 24 hours), the initial equipment investment is large, and the original IP55 protection level cannot be achieved due to the removal of the bus section and it is in an open state, which is not conducive to the insulation operation of the equipment under wet weather conditions such as rain and snow, and to prevent dust The entry of foreign matter, etc., will cause damage to the equipment, and there are certain safety hazards; when removing the connection, it is necessary to lift the removed bus section of the common box before installing it. Withstanding voltage test, the overall recovery time is not less than 8 hours

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