An ultra-high voltage gas-insulated composite bushing
A technology of gas insulation and composite bushings, which is applied in the direction of insulators, lead-in/through-type insulators, etc., which can solve the problems of high structural shape and strength requirements for insulating supports, affecting shielding effects, and high economic costs, and achieve reliable and stable product structure. , The electric field distribution is reasonable, the effect of reducing the field strength
Inactive Publication Date: 2018-04-24
江苏安靠智能输电工程科技股份有限公司
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Problems solved by technology
[0004] The defect of the double-layer shielding structure is that the connection and fixing method between the two shielding layers will impose requirements on the shielding shape and affect the shielding effect; the insulating support between the shielding parts has high requirements on the structural shape and strength, which requires strict demonstration and experimentation
The shielding damage of the double-layer shielding structure often occurs during transportation and installation, and the economic cost is high
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[0020] In order to make the technical problems, technical solutions and advantages solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings.
[0021] The inside of the bushing of the present invention is insulated by high-voltage SF6 gas, and the outside of the bushing is insulated by air. Such as figure 1 As shown, the ultra-high voltage gas-insulated composite bushing of the present invention includes an upper shield 1 , an outlet bar 2 , a sealing cover 3 , a conductor 4 , a bushing 5 , an electric field control module, a bottom plate 9 and a lower shield 10 .
[0022] The electric field control module includes: a stress cone 8 , an insulating ring 7 and a capacitor ring 6 .
[0023] The capacitor ring 6 and the stress cone 8 are connected through the insulating ring 7; the casing 5, the stress cone 8 and the lower shield 10 are all installed on the bottom plate 9; the upper shield 1, the outlet bar 2 an...
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The invention discloses an ultra-high voltage gas-insulated composite bushing, which comprises an upper shielding cover (1), an outlet row (2), a sealing cover plate (3), a conductor (4), a bushing (5), an electric field control module, Base plate (9) and lower shielding case (10). The invention uses the electric field control module to make the field strength distribution inside the bushing more reasonable, reduce the field strength outside the bushing by about 25%, and the product structure is reliable and stable, and the installation is convenient.
Description
technical field [0001] The invention relates to electric equipment, in particular to a combined ultra-high voltage gas-insulated composite bushing. Background technique [0002] Insulating bushing is an insulator used to pass through conductive conductors. As an important insulating component, it is mainly used in transformers, reactors, circuit breakers and other electrical equipment and walls, and is responsible for ground insulation, support and current carrying. function, the application is very extensive. [0003] At present, there are two main methods for controlling the electric field of the 550kV gas-insulated composite bushing, using a single-layer stress cone (shielding) to control the electric field and a double-layer stress cone (shielding) to control the electric field. [0004] The defect of the double-layer shielding structure is that the connection and fixing method between the two shielding layers will impose requirements on the shielding shape and affect t...
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IPC IPC(8): H01B17/58H01B17/60H01B17/26
Inventor 陈晓凌万仁洋
Owner 江苏安靠智能输电工程科技股份有限公司