Spliced external bus grounding switch based on bus post insulator

A post insulator and busbar grounding technology, which is applied in the field of power transmission and transformation engineering, can solve problems affecting the power supply capacity and power supply safety of substations, heavy insulator weight, busbar power outage construction, etc., to reduce labor costs and economic costs, reduce power outage time and Safety risk, good effect of grounding performance

Active Publication Date: 2020-12-29
ECONOMIC TECH RES INST OF STATE GRID HENAN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the heavy weight and high installation height of the original busbar post insulators and the newly installed grounding switch insulators, large-scale mechanical cooperation is required to complete the removal or installation. During this period, the busbar needs to be shut down for a long time during construction, which poses a high safety risk and seriously affects the power supply of the substation during construction. Capacity and security of supply

Method used

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  • Spliced external bus grounding switch based on bus post insulator
  • Spliced external bus grounding switch based on bus post insulator
  • Spliced external bus grounding switch based on bus post insulator

Examples

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Effect test

Embodiment 1

[0040] refer to Figure 2-Figure 5 , The present invention includes a bus post insulator 2, a static contact 4, a grounding tool bar 5, a moving contact 6, a transmission mechanism 7 and an operating mechanism 8. The bus post insulator 2 is the original bus post insulator in the power transmission and transformation system; the static contact 4 is set on the top of the bus post insulator 2 and is electrically connected to the bus bar 1; To install the grounding tool bar 5; the grounding tool bar 5 is a retractable conductive metal rod, the first end of the grounding tool bar 5 is provided with a movable contact 6, and the grounding tool bar 5 is installed through the tool bar rotating shaft 52 near the second end. In the knife bar mounting seat 51, the grounding knife bar 5 can swing between the horizontal direction and the vertical direction along the knife bar rotating shaft 52; One end of the vertical transmission rod 71 is pin-connected, the other end of the movable trans...

Embodiment 2

[0047] refer to Figure 6-Figure 9 , the spliced ​​external busbar grounding switch based on the busbar post insulator provided in this embodiment is based on the following improvements on the basis of Embodiment 1:

[0048] Such as Figure 6 As shown, the transmission mechanism 7 of this embodiment includes a vertical transmission rod 71 , a transmission arm 74 , a connecting arm 75 and a rocker arm 76 . One end of the rocking arm 76 is fixedly connected to the end of the grounding tool bar 5, and the other end is respectively connected to one end of the transmission arm 74 and one end of the connecting arm 75 with pivot pins; the other end of the transmission arm 74 is connected to the tool bar mounting seat 51 through the main shaft 77 On, the main shaft 77 and the joint of the transmission arm 74 are fixed and cannot rotate each other; the other end of the connecting arm 75 is connected to the tool bar mounting seat 51 through the secondary shaft 78, and the connecting ar...

Embodiment 3

[0052] refer to Figure 10 , the spliced ​​external busbar grounding switch based on the busbar post insulator provided in this embodiment is based on the following improvements on the basis of Embodiment 1:

[0053] This embodiment consists of three sets of busbar grounding switches connected in parallel, and the transmission mechanisms 7 of the three sets of busbar grounding switches are fixedly connected to each other through horizontal connecting rods 73 . When the operating rod 82 of the operating mechanism 8 moves vertically up and down, the transmission mechanism 7 of the three sets of bus grounding switches can be driven simultaneously by the horizontal connecting rod 73 to move synchronously, so that one operating mechanism 8 can control multiple sets of bus grounding switches.

[0054] This embodiment can be set up in parallel according to the number of phases of the busbars. For example, for a common three-phase AC transmission line, three sets of busbar grounding s...

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Abstract

The invention provides a spliced external bus grounding switch based on a bus post insulator, and belongs to the technical field of power transmission and transformation engineering. The switch comprises an original bus post insulator in a power transmission and transformation system, a static contact arranged at the top end of the bus post insulator and electrically conducted with a bus, a grounding knife bar arranged on a bus post insulator mounting base, a moving contact arranged at one end of the grounding knife bar, and a transmission mechanism fixedly connected with the grounding knife bar. According to the bus grounding switch, the existing bus post insulator is utilized, the grounding knife bar and the operating mechanism of the external grounding switch are used, the existing buspost insulator and the support are used as attachment, the newly-added bus grounding switch is assembled in a splicing and externally-hung mode, the existing bus post insulator is prevented from beingdisassembled, and power failure time and a safety risk during a construction period of the bus grounding switch due to replacement of the bus post insulator are reduced.

Description

technical field [0001] The invention belongs to the technical field of power transmission and transformation engineering, and in particular relates to a spliced ​​external busbar grounding switch based on busbar post insulators. Background technique [0002] In the power transmission and transformation system, the grounding switchgear is an important key component and component, which is used for reliable grounding of high-voltage electrical equipment such as high-voltage busbars, circuit breakers, transformers, isolating switches, etc. To protect the personal safety of important equipment and maintenance personnel. [0003] In a conventional substation, when a busbar with double busbar connection is overhauled, when one section of the busbar is powered off for maintenance, the working current and short-circuit current of the other parallel running busbar will generate an induced voltage on the overhaul busbar due to electromagnetic coupling. In order to ensure the safety of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/00H01H31/06
CPCH01H31/003H01H31/06
Inventor 郭静杨红旗郭新菊王锐席小娟齐道坤郭正位王文峰杨敏李斐
Owner ECONOMIC TECH RES INST OF STATE GRID HENAN ELECTRIC POWER
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