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+/-1100kV high-voltage direct current disconnecting switch

A technology of isolating switch and high-voltage direct current, which is applied in the direction of the switch that is not connected to the bridge contact point, can solve the problem that the high-voltage direct current isolating switch has not been produced, and achieve the effect of saving raw materials, saving space, and rotating smoothly

Active Publication Date: 2013-07-24
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the highest voltage level of high-voltage DC isolating switches in the world is ±800kV, and the ±1100kV high-voltage DC isolating switches have not been produced in the world.

Method used

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  • +/-1100kV high-voltage direct current disconnecting switch
  • +/-1100kV high-voltage direct current disconnecting switch
  • +/-1100kV high-voltage direct current disconnecting switch

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Embodiment Construction

[0037] The present invention is described in further detail below in conjunction with accompanying drawing:

[0038] join figure 1 , the present invention includes two static side post insulators 4 with static contacts 1 on the top, and an intermediate post insulator 3 arranged between the two static side post insulators; as Figure 5-1 and 5-2 As shown, the two static side post insulators 4 and the middle post insulator 3 are combined post insulators, wherein each combined post insulator consists of three separate post insulators 41 distributed at the three vertices of the triangle and several triangle connection frames 42 are assembled into one body, and the top of the post insulator 41 is provided with a triangular insulator grading ring 7, such as Figure 6-1 and 6-2 As shown, each side of the insulator grading ring 7 is welded with a grading ring mounting plate 71 fixedly connected to the triangular connection frame 42 on the top of the post insulator 4 . like Figur...

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Abstract

The invention discloses a + / -1100kV high-voltage direct current disconnecting switch, which comprises two static side strut insulators with top parts being provided with static contacts, and a middle strut insulator arranged between the two static side strut insulators, wherein an operation insulator is arranged at a central position in the middle strut insulator; an electric conduction knife switch is arranged on an upper end of the operation insulator; and moving contacts matched with the static contacts are arranged on two ends of the electric conduction knife switch. The direct current disconnecting switch is of a three-column horizontal opening dual-fracture structure, and the electric conduction knife switch is arranged on the operation insulator, so that the electric conduction knife switch is rotated around a center of the middle strut insulator, and the aim that switching-on is formed when two ends of the electric conduction knife switch enter into the static contacts on upper parts of the struts on two ends, and switching-off is formed when the two ends of the electric conduction knife switch are separated from inner parts of the static contacts on the two ends and are rotated at a certain angle is realized. The high-voltage direct current disconnecting switch can meet the requirements on insulation capacity, flow capacity, bore terminal tensile force, standards of wireless interference, and usability.

Description

technical field [0001] The invention relates to the field of high-voltage isolating switches, in particular to a ±1100kV high-voltage DC isolating switch. Background technique [0002] The development of the national economy has continuously increased the demand for electricity. In order to efficiently transmit electric energy from areas rich in electric power resources to all parts of the country, the State Grid Corporation of China proposed to build a ±1100kV high-voltage direct current transmission line. To construct a ±1100kV HVDC transmission line, there must be a ±1100kV HVDC isolating switch. [0003] At present, the highest voltage level of high-voltage DC isolating switches in the world is ±800kV, and ±1100kV high-voltage DC isolating switches have not been produced in the world. Due to the high voltage level and the large air insulation distance, the appearance of the product is relatively large. In terms of the conduction of the disconnector, the structure of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/20
Inventor 梁静林王宇驰康鹏司小伟杨国胜雷虎刘红利
Owner CHINA XD ELECTRIC CO LTD
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