Novel 1100kV GIS bus structure

Abstract

The invention discloses a novel 1100kV GIS bus structure and relates to high voltage equipment. The novel 1100kV GIS bus structure comprises a casing, wherein two ends of the casing are equipped withbasin-type insulators through bolts, a first conductor and a third conductor are fixed on thread holes at the middle of the basin-type insulators through bolts, the casing is provided with multiple supporting insulators, the supporting insulators are connected with shaped conductors, two sides of the shaped conductors are respectively fixedly equipped with a contact, and two sides of the shaped conductors are provided with the shield. The bus structure is advantaged in that the integral size is small, weight of a unit bus is reduced, the sulfur hexafluoride gas is further correspondingly reduced, materials and cost are greatly saved, the discharging possibility is reduced through the shaped conductors, a problem of the reduced insulation distance caused by local conductor expansion can besolved, the bus diameter is reduced, insulation performance is guaranteed, the conductor length increases through the supporting insulators, length of the unit bus increases, the butt area is greatlyreduced, and mounting workload is reduced.

Description

technical field [0001] The invention relates to high-voltage equipment, in particular to a busbar structure for 1100kV GIS. Background technique [0002] Bus bar refers to products made of high-conductivity copper (copper row) and aluminum materials to transmit electric energy, and to collect and distribute electric power. [0003] With the continuous improvement of the voltage level, my country has begun to operate the UHV power grid with a voltage level of 1100kV. The voltage and current requirements for the GIS busbar are also increasing, and the size of the busbar equipment is becoming larger and larger. The 1100kV substation GIS currently in operation The inner diameter of the busbar is 1000mm and because the busbar occupies a relatively large area, reducing the diameter of each busbar unit can greatly reduce the occupied area. However, the reduction of the size of the busbar can not only be reduced in diameter, but also consider the current carrying capacity of the bus...

AI Technical Summary

Problems solved by technology

However, the reduction of the size of the busbar can not only be reduced in diameter, but also consider the current carrying capacity of the busbar conductor, the discharge safety distance between the shell and the conductor, the thermal expansion and contraction of the conductor, the pressure of the insulating gas, and the performance of the insulating part. At the same time, ordinary busbars only rely on the basin-type insulators at both ends to support the conductors. The design length of the conductors will be deformed when the design length is about 5m, which limits the design length of a single busbar unit. If the busbar is longer, too many basin-type insulators will be used. Insulators, because of the high processing technology and high cost of pot-type insulators, excessive use will cause the overall cost of the busbar to be too high

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