Wiring device with connecting rod structure and power transmission device

Abstract

The invention relates to the technical field of power transmission equipment and discloses a wiring device with a connecting rod structure and a power transmission device. A busbar and a bushing binding post are connected through the connecting rod structure, thereby providing mechanical support for the busbar to fix the busbar at a designated position. Therefore, a basin insulator or post insulator in the prior art can be removed so as to avoid the surface flashover of the basin insulator or post insulator used for fixing the busbar and the wiring device in the prior art and improve the safety of the wiring device. In addition, since the mechanical force is transferred to the bushing binding post through the connecting rod structure, a current-carrying lead does not has any mechanical support effect, thereby reducing a risk of displacement and poor contact of the current-carrying lead caused by mechanical stress.

Description

technical field [0001] The invention relates to the technical field of power transmission equipment, in particular to a wiring device with a connecting rod structure and power transmission equipment. Background technique [0002] GIS (Gas-insulated metal-enclosed switchgear, gas-insulated fully enclosed combined electrical appliances) and GIL (Gas-insulated metal-enclosed transmission line, gas-insulated metal-enclosed transmission line) are common transmission equipment in power systems. At present, GIS / GIL The connection with other equipment (overhead lines, transformers, etc.) is generally realized through bushings. One end of the bushing is connected to the internal busbar of GIS / GIL, and the other end of the bushing is connected to the above-mentioned other devices. [0003] In the prior art, the busbars are generally fixed by pot insulators or post insulators, such as figure 1 As shown, the bushing 10 and the GIS / GIL internal bus bar 30 generally realize plug-in conta...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the busbars are generally fixed by pot insulators or post insulators, such as figure 1 As shown, the bushing 10 and the GIS / GIL internal bus bar 30 generally realize plug-in contact through the wiring device 60, specifically, the bus bar 30, the wiring device 60 and other components are located in the housing 50, and the bus bar 30 is fixed by the pot insulator 80, In addition, the wiring device 60 can be fixed in the insert 40 of the pot insulator 80 by bolts, and the bushing terminal 20 is inserted into the wiring device 60 from top to bottom, so that the bushing terminal 20 passes through the contact in the wiring device 60 . The head 70 is in electrical contact with the bus bar 30 to conduct current. However, the pot insulator 80 and the bus bar 30 are installed and fixed at the fixed position, and the electric field distortion caused by the medium interface effect of the three joint points of "epoxy-SF6-conductor", that is, the so-called "interface effect", and at a higher operating voltage, the electric field distortion effect will be amplified and easily cause partial discharges. Under high voltage, there are large tangential components, normal components and Due to the electric field adsorption effect, the surface of the pot insulator 80 is easy to absorb impurities and cause pollution and cause flashover along the surface, which brings hidden dangers to the safe operation of GIS / GIL equipment and substations

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