Multi-phase insulation pillar for GIL, insulation assembly and gas insulation type power transmission device
A technology of insulating pillars and three pillars, which is applied in the fields of gas-insulated power transmission devices and multi-phase insulating pillars, can solve the problems of limited length and so on.
Pending Publication Date: 2021-05-28
江苏安靠智能输电工程科技股份有限公司 +1
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Problems solved by technology
[0006] In order to solve the technical problem of the existing multi-phase common box GIL due to the limited length, the invention provides a multi-phase insulating support for GIL, an insulating assembly and a gas-insulated power transmission device; the multi-phase insulating support is fixed on the conductor of the GIL The middle part acts as a supporting conductor, improving the stiffness of the multi-phase insulating pillar, thereby reducing the influence of conductor disturbance on the electrical performance of GIL
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[0043] GIL adopts gas insulation, and has strict requirements on the overall airtightness of the equipment. The annual air leakage rate is required to be less than 0.1%. The sealing connection surface in the transmission line should be reduced as much as possible, so as to reduce the probability of air leakage. For this reason, this embodiment provides a newly designed multi-phase insulating post. For the convenience of explanation, the following is an example of a three-phase three-post insulator; Further expansion, for example, using three-phase two-post insulators, three-phase four-post insulators, three-phase five-post insulators, three-phase six-post insulators, three-phase seven-post insulators, three-phase eight-post insulators, three-phase nine-post insulators, etc.; The number of specific power supply phases can also be adjusted in combination with different application scenarios; these different implementation modes all belong to the protection scope of the technical ...
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The invention belongs to the technical field of power transmission devices, and provides a multi-phase insulation pillar for a GIL, an insulation assembly and a gas insulation type power transmission device in order to solve the technical problem that the length of an existing multi-phase common box type GIL is limited. The multi-phase insulation pillar comprises: central inserts arranged in a distribution circle around the structure center of the multi-phase insulation pillar; end inserts arranged on the supporting legs of the multi-phase insulation pillar, wherein the supporting legs are also arranged in a distribution circle with the structure center of the multi-phase insulation pillar as the center, and the supporting legs are located on the outer edge of the multi-phase insulation pillar, and the end inserts abut against the inner wall of a shell of the GIL; and an epoxy insulating part which wraps the central inserts and the end inserts. The multi-phase insulation pillar is fixed in the middle of the conductor of the GIL to support the conductor, so that the rigidity of the multi-phase insulation pillar is improved, and the influence of conductor deflection on the electrical performance of the GIL is reduced.
Description
technical field [0001] The invention relates to the technical field of power transmission devices, in particular to a multi-phase insulating support for GIL and a gas-insulated power transmission device. Background technique [0002] GIL is the abbreviation of gas-insulated metal-enclosed transmission line. GIL is a high-voltage, high-current power transmission device that uses gas insulation and conductors enclosed in a metal casing. At present, GIL projects at home and abroad generally adopt a phase-separated structure, that is, a The loop transmission line includes three transmission pipelines, and a few GILs that adopt a three-phase common box structure only follow the basin insulator structure of GIS. [0003] The power transmission system using GIL is mainly composed of aluminum alloy shell, aluminum alloy conductor, SF6 insulating gas, and epoxy support. GIL is equivalent to a longer GIS busbar, its structure is much simpler than GIS, and the economic benefit of the ...
Claims
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IPC IPC(8): H02G15/20H02G3/04
CPCH02G3/0406H02G3/0481H02G15/20
Inventor 陈浩杰李海强郭哲刘成于加凡许文俊郑超彭光耀周秋文
Owner 江苏安靠智能输电工程科技股份有限公司