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A UHV DC grounding switch

An ultra-high voltage DC, grounding switch technology, used in electrical switches, high-voltage air circuit breakers, air switch parts and other directions, can solve the problem that the grounding switch cannot meet the requirements of use, and achieves operation stability and reliability, and ingenious design. , Improve the effect of electric field distribution

Active Publication Date: 2017-12-26
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to develop a UHV DC grounding switch with good stability and high reliability, and none of the existing grounding switches can meet its use requirements

Method used

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  • A UHV DC grounding switch
  • A UHV DC grounding switch
  • A UHV DC grounding switch

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0037] The present invention is an UHV DC grounding switch, such as figure 1 As shown, it includes grounding static contact 1, grounding knife 2, post insulator 3, supporting beam 4, bracket 5, operating mechanism 6 and opening support frame 7; supporting beam 4 is preferably made of channel steel, and bracket 5 It is preferably made of steel; the grounding switch 2 is installed on the supporting beam 4; the supporting beam 4 is installed on the bracket 5; the operating mechanism is installed on the bracket 5 and connected with the grounding switch 2; the post insulator 3 is fixed on on the bracket 5; the static grounding contact 1 is fixed on the upper end of the post insulator 3; as figure 1 and figure 2 As shown, the top of the post insulator 3 is equipped with a voltage equalizing devi...

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Abstract

The invention provides an extra-high-voltage direct-current grounding switch. The extra-high-voltage direct-current grounding switch comprises a bracket, a grounding static contact and a grounding switch blade which are arranged in a matching manner, a support insulator and a supporting beam which are fixedly arranged on the bracket, an operation mechanism for driving the grounding switch blade and a switch blade supporting frame for supporting the grounding switch blade; a double-column type composite support insulator structure is adopted so that the structure stability and reliability of the whole body of a product are effectively enhanced; the grounding switch blade adopts a vertical retractable structure, and a driving push rod drives a conductive tube to carry out brake switching-on / off operation, so that a triangular structure is formed by the conductive tube at a switching-off status and the driving push rod, and the reliability of the product is improved; the folded conductive tube is driven from an inner pull rod, and different rotary centers of the pull rod and the conductive tube of the lower part are set, so that the pulling-up operation of the conductive tube is finished in switching-off operation, and folding driving in the switching-off operation is finished; and two acting processes are equal through the transmission of a gearbox, and the fixed and stable connection of switching-on and switching-off positions is realized.

Description

technical field [0001] The invention relates to the field of high-voltage equipment, in particular to a UHV DC grounding switch. Background technique [0002] In recent years, high-voltage direct current transmission has become an important development direction of the power system due to its advantages of large transmission capacity, long transmission distance, and strong economy. Operation, ±1100kV transmission line is under planning. According to the UHV project construction plan of the State Grid Corporation of China, by 2015, the UHV power grid of "Sanhua" (North China, East China, and Central China) will be built, forming a "three vertical, three horizontal and one ring network", and 11 circuits of UHV DC transmission will be built. project. UHV DC grounding switch is an important equipment in UHV DC substation. Therefore, it is necessary to develop a UHV DC grounding switch with good stability and high reliability, and none of the existing grounding switches can me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H31/02H01H21/54H01H1/50H01H3/46
CPCH01H1/50H01H3/46H01H21/54H01H31/026
Inventor 司小伟王宇驰周昊明麻永福康鹏
Owner CHINA XD ELECTRIC CO LTD
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