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Horizontally-arranged DC vacuum circuit breaker based on linkage current transfer

A vacuum circuit breaker and current technology, which is applied to high-voltage air circuit breakers, circuits, high-voltage/high-current switches, etc., can solve problems such as poor synchronization and complex structure, and achieve simplified structure, simple module structure, and convenient industrial implementation.

Active Publication Date: 2016-05-04
DALIAN UNIV OF TECH
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] For HVDC systems, breaking the short-circuit current of the system based on the principle of current transfer is the only feasible solution so far. Traditional DC circuit breakers have poor synchronization between main circuit breaking and transfer current input, and trigger switches are selected due to the slow speed of the mechanism, resulting in More complex structures, etc.

Method used

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  • Horizontally-arranged DC vacuum circuit breaker based on linkage current transfer
  • Horizontally-arranged DC vacuum circuit breaker based on linkage current transfer
  • Horizontally-arranged DC vacuum circuit breaker based on linkage current transfer

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Embodiment Construction

[0020] A horizontally arranged DC vacuum circuit breaker based on linkage current transfer, including a test frame, a main circuit part and a transfer circuit part.

[0021] The test frame includes a mechanism power supply and a controller 3, a rapid repulsion permanent magnet mechanism 5, a contact spring 4, a supporting insulator 6, a base box 7, a supporting insulating cylinder 8 and a mechanism box 9.

[0022] The mechanism power supply and the controller 3 and the rapid repulsion permanent magnet mechanism 5 are installed in the mechanism box 9. The lower part of the mechanism box 9 is fixedly connected with the support insulator 6. The support insulator 6 provides support and insulation for the mechanism box 9; the lower part of the support insulator 6 and the base box 7 Fixed connection; the mechanism power supply and the controller 3 are placed in the high-potential area, eliminating the need for insulating pull rods, further reducing the quality of the moving end of the rap...

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Abstract

The invention provides a horizontally-arranged DC vacuum circuit breaker based on linkage current transfer, which is used for breaking fault current through current transfer. The device comprises a test rack, a main loop part and a transfer loop part, a set of fast repulsion permanent-magnet mechanism is adopted to achieve an effect of rapid linkage through the actions of two vacuum arc extinguishing chambers at the two ends of a central shaft rod control mechanism, and the device has the functions of rapid linkage switching into a transfer loop and achieving zero breaking of a main loop. By the horizontally-arranged DC vacuum circuit breaker, the structure of a high-voltage DC circuit breaker in a high-voltage DC power system is simplified, and an advanced vacuum switch is used in a high-voltage grade to substitute an SF6 switch which is used massively and has a greenhouse effect.

Description

Technical field [0001] The invention belongs to the technical field of power high-voltage switches, and is a horizontally arranged high-voltage DC vacuum circuit breaker based on a rapid repulsive force permanent magnet mechanism and linkage closing, and realizes breaking of fault current through current transfer. Background technique [0002] High voltage direct current (HVDC) transmission is a component of a smart grid with long-distance, high-transmission energy-saving, narrow line corridors, and high operational reliability. The research and development of large-capacity long-distance DC transmission technology and equipment has been listed as a key research on the priority theme of "ultra-large-scale transmission and distribution and grid security" in the key energy field of the "National Medium and Long-term Science and Technology Development Plan Outline (2006-2020)" content. [0003] With the irreplaceable advantages of AC power transmission, HVDC power transmission has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666
CPCH01H33/666
Inventor 邹积岩王永兴黄智慧刘晓明董文亮
Owner DALIAN UNIV OF TECH
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