Transformer substation aluminum tube supporting type expanded-diameter heat resistant aluminum alloy bus

Abstract

The present invention provides a transformer substation aluminum tube supporting type expanded-diameter heat resistant aluminum alloy bus. The transformer substation aluminum tube supporting type expanded-diameter heat resistant aluminum alloy bus comprises an expanded-diameter supporting tube made of aluminum and a conductive layer twisted at the periphery of the expanded-diameter supporting tube, and the conductive layer comprises a plurality of conductive single wires distributed along the circumferential direction of the expanded-diameter supporting tube. The adjacent two conductive single wires, and the conductive single wire and the expanded-diameter supporting tube are both in surface contact, the peripheral surface of each conductive single wire is a plane, and in the adjacent two conductive single wires, the edge of the peripheral surface of one conductive single wire extends to the edge of the peripheral surface of the other one conductive single wire. According to the transformer substation aluminum tube supporting type expanded-diameter heat resistant aluminum alloy bus, the diameter of the bus is increased substantially by an expanded-diameter supporting layer on the condition of not increasing the conductive area, thereby satisfying the requirement for the expanded-diameter buses of the high altitude areas. In addition, according to the preset invention, the adjacent two conductive single wires, and the conductive single wire and the expanded-diameter supporting tube are both in surface contact, thereby improving the conductive single wire twisting tightness. Meanwhile, the peripheral surface of the conductive layer composed of the plurality of conductive single wires is very smooth.

Description

technical field [0001] The invention relates to the technical field of transmission line conductors, in particular to a heat-resistant diameter-expanding busbar supported by an aluminum tube for a substation. Background technique [0002] The bus bar is generally used for the connection of voltage distribution devices at all levels in the substation, as well as the connection of electrical equipment such as transformers and corresponding power distribution devices, that is, the function of the bus bar is to collect, distribute and transmit electric energy. In a substation located at a high altitude location, the electric field, magnetic field, audible noise, and radio interference levels of the bus used will greatly exceed the relevant requirements, which will not only cause environmental pollution, but also cause a large amount of power loss. The solution to these problems The best technical means is to increase the busbar diameter. [0003] At present, the traditional met...

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Problems solved by technology

[0005] 1. The cross-section of the heat-resistant aluminum alloy single wire is round. When multiple aluminum alloy single wires with circular cross-section are twisted around the outer circumference of the corrugated aluminum tube, two adjacent aluminum alloy single wires are in line contact, that is, the two There is a gap between them, which leads to changes in the radius of curvature of the outer surface of the busbar, which in turn leads to an increase in the electric field intensity on the surface of the busbar, which reduces the initial corona voltage of the busbar and limits the use of the busbar in substations in high-altitude areas;

[0006] 2. After multiple aluminum alloy single wires are twisted, the twisting tightness is low

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