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Detachable bus unit and rigid gas insulation electric transmission line

A transmission line and busbar technology, applied in the field of GIL, can solve problems such as increase, large loss, and transmission capacity limitation

Active Publication Date: 2015-04-22
BEIJING POWER EQUIP GRP
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  • Abstract
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  • Application Information

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Problems solved by technology

In addition, in view of the expansion of mature power grids and the need for underground construction of ultra-high voltage substations, and XLPE cables not only have limited transmission capacity, but also have large losses and are not as reliable as GIL. Therefore, ultra-high voltage GIL is used in underground ultra-high voltage transmission networks in large cities applications are increasing

Method used

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  • Detachable bus unit and rigid gas insulation electric transmission line

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Since the lines laid by GIL are generally long in application, the busbar section in GIL includes multiple busbar units, and the busbar unit has a shell and a central conductor located in the shell through the support of an insulator. The preferred insulator is a pot insulator 2, a pot insulator The basin edge 22 of 2 is fixed on the shell. For the convenience of use between adjacent busbar units, the basin bottom 21 of the basin insulator 2 of each busbar unit is provided with an insert 20, and the two sides of the insert 20 are respectively connected with a central conductor. And the static contact, the static contact and the insert are preferably connected by bolts, and the central conductor is electrically connected with the insert, for example, it can be electrically communicated with the insert 20 through the contact seat,...

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Abstract

The invention provides a detachable bus unit and a rigid gas insulation electric transmission line. The detachable bus unit comprises a center conductor, a basin-type insulator, a fixed contact, a sliding contact base and an outer shell, the center conductor is arranged in the outer shell, the two ends of the basin-type insulator are fixed to the outer shell, the center conductor is cylindrical, the fixed contact is connected with an insert to achieve electrical connection between the fixed contact and the center conductor, the sliding contact base is of a cylindrical structure, one end of the sliding contact base is in sleeving connection to the center conductor, the other end of the sliding contact base is in sleeved connection to a fixed contact of a first basic bus unit to achieve electrical connection between the center conductor and the fixed contact of the first basic bus unit, and the first basic bus unit is a bus unit connected with the detachable bus unit and located on the left side of the detachable bus unit in the rigid gas insulation electric transmission line. The detachable bus unit is a simple detachable bus unit and has the higher long-term through-current capacity and the higher short-circuit fault through-current capacity.

Description

technical field [0001] The present invention relates to the technical field of GIL (Gas Insulated Metal Enclosed Transmission Lines, gas-insulated metal-enclosed transmission lines or rigid gas-insulated transmission lines, GIL for short), in particular to a possible Disassemble the busbar unit and rigid gas insulated transmission line. Background technique [0002] GIL equipment has outstanding advantages such as high reliability, strong transmission capacity, low loss, safety and environmental protection, and convenient installation, operation and maintenance. It is widely used in power engineering, especially its high reliability, and has also been recognized in the field of nuclear power. recognized. In addition, in view of the expansion of mature power grids and the need for underground construction of ultra-high voltage substations, and XLPE cables not only have limited transmission capacity, but also have large losses and are not as reliable as GIL. Therefore, ultra-...

Claims

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Application Information

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IPC IPC(8): H02G5/06
Inventor 张烈张微金立东赵悦胡婷婷黄素格
Owner BEIJING POWER EQUIP GRP
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