Dry-type air-core reactor and its current-sharing electrode

An air-core reactor and dry-type technology, which is applied in the direction of preventing/reducing unwanted electric/magnetic influences, and can solve problems such as insufficient protection of the lower end of the reactor, damage, and failure of hydrophobic coatings

Active Publication Date: 2018-07-10
BEIJING POWER EQUIP GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dry-type air-core reactor and its current-sharing electrode to solve the problems existing in the prior art, such as insufficient protection of the lower end of the reactor by the rainproof cap, and surface current concentration caused by the failure or damage of the hydrophobic coating.

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  • Dry-type air-core reactor and its current-sharing electrode
  • Dry-type air-core reactor and its current-sharing electrode
  • Dry-type air-core reactor and its current-sharing electrode

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] In order to better protect dry-type hollow reactors from tracking under dirty and wet conditions, make up for the insufficient protection of the lower end of reactors by rainproof caps, and solve problems such as failure or damage of hydrophobic coatings, the present invention provides a dry-type hollow reactor. Reactor 100 and current sharing electrode 10 for uniform surface electric field.

[0023] First, if figure 2 , image 3 As shown, the current sharing electrode 10 used in the dry-type air-core reactor 100 provided by the present invention includes an aluminum plate 1 and an aluminum wire 2 .

[0024] Among them, the aluminum plate 1 is strip-shaped (or called "belt-shaped"), and is arc-shaped in the length direction (such as image 3 , so it is also called arc strip aluminum plate), one side ( figure 2 The edge of...

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Abstract

The invention provides a dry-type air-core reactor and a current sharing electrode thereof. The current sharing electrode for the dry-type air-core reactor comprises an aluminum plate and an aluminum lead wire, wherein the aluminum plate is strip-shaped and is arc-shaped in the length direction and a groove opening is formed in the edge of one side; one end of the aluminum lead wire is welded onto the aluminum plate. By adopting a manner of additionally arranging the current sharing electrode at the lower end part, the reactor is prevented from the phenomena that current leakage tracking under a dirty and wet condition and large-leakage current concentration is caused near a bus aluminum bar and the end surface discharge risks are reduced.

Description

technical field [0001] The invention relates to the technical field of reactors and their protection, in particular to a dry-type air-core reactor and a current equalizing electrode pre-embedded in the reactor. Background technique [0002] Dry-type air-core reactors have the advantages of good inductance linearity, low cost, and maintenance-free. Large-capacity, high-voltage AC and DC reactors have been widely used. Most dry-type air-core reactors operate outdoors, and their electrical characteristics are easily affected by the environment. Especially in the case of rainwater doped with a large amount of impurities, there will be a conductive water film on the surface of the reactor. Under the action of the surface electric field, excessive local Surface leakage current causes local dry area due to current heating, strongly changes the surface electric field distribution, and may form local surface discharge, forming dendritic black traces, affecting the electrical performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/34
CPCH01F27/34
Inventor 张月华张猛李德良葛计彬王红雨王银岭孙国华
Owner BEIJING POWER EQUIP GRP
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