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Fast arc extinguisher, medium and low voltage metal switch cabinet and application method of fast arc extinguisher

An arc extinguisher and fast technology, applied in the field of power transmission and transformation, can solve the problems of inability to effectively protect the personal safety of operating equipment and equipment damage, and achieve the effects of restarting, reducing maintenance costs, and reducing threats to personal safety

Active Publication Date: 2019-04-12
STATE GRID HUNAN ELECTRIC POWER +2
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

During this time, the arc has caused great damage to the equipment, so the traditional arc protection system cannot effectively protect the operating equipment and personal safety

Method used

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  • Fast arc extinguisher, medium and low voltage metal switch cabinet and application method of fast arc extinguisher
  • Fast arc extinguisher, medium and low voltage metal switch cabinet and application method of fast arc extinguisher
  • Fast arc extinguisher, medium and low voltage metal switch cabinet and application method of fast arc extinguisher

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Embodiment Construction

[0031] Such as figure 1 , figure 2 and image 3 As shown, the rapid arc extinguisher of this embodiment includes a bracket 1, and the bracket 1 is provided with a three-phase opening and closing operation mechanism 3 with an electromagnetic repulsion coil 2, and an electromagnetic repulsion coil 2 of the three-phase opening and closing operation mechanism 3 Three-phase integrated electromagnetic repulsion coils are formed in series, and the three-phase integrated electromagnetic repulsion coils formed by series connection of the electromagnetic repulsion coils 2 can simultaneously provide electromagnetic repulsion for the three-phase fast arc-extinguishing components, improving the consistency of closing action.

[0032] Such as figure 1 , figure 2 and image 3 As shown, the opening and closing operating mechanism 3 includes a static contact 31, a moving contact 32, an insulating pull rod 33, a moving connecting rod 34 and a repulsion disk 35, and the three-phase opening...

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Abstract

The invention discloses a fast arc extinguisher, a medium and low voltage metal switch cabinet and an application method of the fast arc extinguisher. A three-phase opening and closing operating mechanism with electromagnetic repulsion coils is arranged on a bracket of the fast arc extinguisher, and the electromagnetic repulsion coils of the three-phase opening and closing operating mechanism areconnected in series to form a three-phase integrated electromagnetic repulsion coil; the medium and low voltage metal switch cabinet comprises a medium and low voltage metal switch cabinet body and the above-mentioned fast arc extinguisher; and the application method includes the step of performing closing and grounding on three-phase lines of the medium and low voltage metal switch cabinet. According to the scheme of the invention, the three-phase simultaneous closing action can be completed within 5ms to perform fast arc extinguishing, so that the personal safety threats of arc faults to theequipment and the operation and maintenance personnel can be effectively reduced, and wide engineering application values can be achieved; and the scheme of the invention has a function of fast opening, can complete opening within 10ms, is favorable for restarting a power distribution system, can be repeatedly used, and can further reduce the maintenance cost of a novel fast arc light protectionsystem after operation.

Description

technical field [0001] The invention relates to the field of power transmission and transformation, in particular to a fast arc extinguisher, a medium and low voltage metal switch cabinet and an application method of the fast arc extinguisher, which can be used to realize arc protection inside metal-enclosed switch cabinets and other power transformation and distribution equipment. Background technique [0002] Due to many outgoing lines, frequent operation, equipment insulation aging and mechanical wear, and poor operating conditions, the failure probability of medium and low voltage buses is much higher than that of high voltage and ultra high voltage buses. The arc energy generated by the failure of the medium and low voltage switchgear can easily break the 10 mm diameter bolts on the distribution board. An arc fire without arc extinguishing protection can usually directly destroy a switchgear or a complete unit, making it irreparable. The arc fault may also affect the D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666H01H33/664
CPCH01H33/664H01H33/666
Inventor 梁文武毛文奇李辉徐浩刘海峰朱维钧余斌严亚兵吴晋波洪权郭思源臧欣
Owner STATE GRID HUNAN ELECTRIC POWER
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