Novel tubular bus system

Abstract

The invention relates to a novel tubular bus system comprising tubular buses and a connecting structure. Adjacent tubular buses are fixedly connected through the connecting structure. Each tubular bus comprises a wire core which is successively wrapped in an insulated layer, a shielding layer, a heat-shrinkable sheath, and an insulated sheath. The wire core is in a regular octagonal shape and is provided with a plurality of heat-dissipating channels. A polytetrafluoroethylene layer wraps the wire core and is used as the insulated layer. The insulated layer is in a cylindrical shape and wrapped in the shielding layer in a regular decagonal shape. The shielding layer is an organosilicon flame-retardant heat-conducting silicone rubber insulating coating and is wrapped in the heat-shrinkable sheath in a cylindrical shape. The heat-shrinkable sheath is wrapped in the insulated sheath in a regular dodecagonal shape. The novel tubular bus system is good in toughness, insulating performance, and electrical performance.

Description

technical field [0001] The invention belongs to the field of high-voltage electrical appliances, and in particular relates to a novel tubular busbar system. Background technique [0002] With the continuous development of the domestic economy, the power load of each substation has increased sharply, the operating current of the system has become larger and larger, the load has become more and more concentrated, and the capacity of the main transformer of the substation has also increased. The connection method of multi-piece rectangular busbars or direct cable connection is no longer suitable for the working method of large current (above 3000A), and at the same time, it causes large additional loss, uneven current distribution, and increased skin effect coefficient resulting in current carrying Phenomena such as capacity decline and contact heating are becoming more and more obvious. [0003] Domestic busbars have been technically improved, so that most of the insulation l...

AI Technical Summary

Problems solved by technology

The disadvantage of the insulated busbar is mainly the insulation treatment of the intermediate connection. The insulation of the single pipe mother is done before leaving the factory. The intermediate joint is used for the docking of the single pipe mother and the single pipe mother on site. Insulation treatment of joints, but the humidity and temperature of the surrounding environment are impossible to match, and even impurities may be brought in when wrapping by hand, which greatly reduces the electrical insulation performance of the tube mother

Images