KR20130063350A - Conductive structure for gas insulated switchgear - Google Patents

Abstract

PURPOSE: A conductive structure for a gas insulator switchgear using a field relaxation shield is provided to implement performance improvement and miniaturization and to save costs by using a field relaxation shield which is implemented as a hemispherical cap. CONSTITUTION: A conductive structure for a gas insulator switchgear(100) includes a conducting wire unit(110) which consists of conducting wires of a circumferential shape with a circumferential hole inside, and is connected to another conductive wire unit by forming a 'L' shaped step on one end of the conducting wire, wherein the 'L' shaped step is exposed to the outside; a plurality of connection parts(120,130) which are positioned at the 'L' shaped step and connect a conductive wire unit and another conductive wire unit; a field relaxation shield(140) which surrounds one of the connecting units.

Description

CONSTRUCTION STRUCTURE FOR GAS INSULATED SWITCHGEAR}

The present application relates to a conductor structure for a gas insulated switchgear, and more particularly, to a conductor structure for a gas insulated switchgear which can improve the performance, miniaturization and cost reduction by using a field relaxation shield.

In general, Gas Insulated Switchgear (GIS) is a mechanism that performs the opening / closing mission to cut off the current when an accident current occurs. Fills SF6 gas with excellent insulation and extinguishing characteristics. The gas insulated switchgear operates an internal circuit breaker to block the line when an abnormal current occurs, and controls the arc generated by the insulating gas. However, gas insulated switchgear requires insulation performance to withstand the specified voltage, so it is necessary to alleviate the electric field inside the equipment.

Korean Utility Model Registration Application No. 20-2002-0018248 discloses a technique related to a vertical disconnector for a gas insulated switchgear. The technology is designed to open and close high voltage circuits only after the load current is cut off. In particular, this technology prevents the diffusion of metal powder, which occurs in the movers and stators that directly open and close the circuits, causing insulation breakdown. Make it possible.

Korean Laid-Open Patent Publication No. 10-2011-0087633 discloses a technology related to a field connection connection device for electric field relaxation of a solid insulated switchgear. The technology is connected to the phase connection bushing of the SF6 gas insulated switchgear, a newly developed special high voltage solid state switch, and connected to the phase bushing of the solid insulated switchgear and interconnecting the phase connection. It has a connection portion, the phase connection portion and the connection portion is made of a conductor inside the housing made of an insulator, characterized in that the electric field relaxation conductive ring is fitted to the front end of the phase connection portion of the housing.

Korean Utility Model Application No. 20-2002-0018248 Korean Patent Publication No. 10-2011-0087633

The present application is to provide a conductor structure for a gas insulated switchgear that can improve the performance, miniaturization and cost by using a field relaxation shield. In particular, the field relaxation shield here may be implemented as a hemispherical cap (not necessarily a tennis ball).

Among the embodiments, the conductor structure for the gas insulated switchgear is formed of a circumferential conductor including a circumferential hole therein, and one end of the conductor forms a step of 'A' shape to form a stepped path. Is connected to the lead portion, the 'b'-shaped step is exposed to the outside, the' b'-shaped step is located, a plurality of connecting portions connecting the lead portion and the other lead portion and the And a field relaxation shield surrounding one of the plurality of connections.

In one embodiment, each of the plurality of connecting portions may form a thread in the longitudinal direction to connect the lead portion and the other lead portion through a bolt. Here, the electric field relaxation shield may be formed of a metal cap inserted into the lower end of the bolt and surrounding the upper end of the bolt in a hemispherical shape.

The conductor structure for the gas insulated switchgear and the related technology (s) of the present application can be improved in performance, miniaturized and reduced in cost by using an electric field relaxation shield. The field relaxation shield here may be embodied as a hemispherical cap (not necessarily a tennis ball).

1 is a view illustrating a structure for applying a shield for electric field relaxation of a gas insulated switchgear according to an embodiment of the disclosed technology.
2 is a diagram illustrating a field relaxation shield according to an embodiment of the disclosed technology.
3 is a view illustrating a shape to which a conductor structure for a gas insulated switchgear according to an embodiment of the disclosed technology is applied.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments may be variously modified and may have various forms, and thus the scope of the disclosed technology should be understood to include equivalents capable of realizing the technical idea. Also, the purpose or effect of the disclosed technology should not be construed as being limited thereby, as it does not mean that a particular embodiment must include all such effects or merely include such effects.

Meanwhile, the meaning of the terms described in the present application should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosed technology belongs, unless otherwise defined. The terms defined in the commonly used dictionary should be interpreted to coincide with the meanings in the context of the related art, and should not be interpreted as having ideal or excessively formal meanings unless clearly defined in the present application.

1 is a view illustrating a conductor structure for a gas insulated switchgear according to an embodiment of the disclosed technology.

Referring to FIG. 1, the conductor structure 100 for a gas insulated switchgear includes a first conductive part 110a, a second conductive part 110b, a first connecting part 120, a second connecting part 130, and an electric field relaxation shield. 140. The conductor structure 100 for the gas insulated switchgear forms a path through which current flows, and flows current from the first lead portion 110a to the second lead portion 110b.

The first lead portion 110a is formed of a circumferential lead including a circumferential hole therein. In one embodiment, the diameter of the first conductive part 110a may correspond to between 5 cm and 11 cm. In one embodiment, the material of the first conductive part 110a may correspond to aluminum. In addition, one end of the first conductive portion (110a) forms a step of the 'b' shape like a chair, the step of the 'b' shape is exposed to the outside.

The second conductive part 110b may be electrically connected to the first conductive part 110a and may be coupled through the first and second connection parts 120 and 130. The current may flow from the first conductive part 110a to the second conductive part 110b.

The first connection part 120 may be disposed inside the step of the '-' shape, and connects the first and second conductive parts 110. In one embodiment, the first connection portion 120 may form a thread in the longitudinal direction to connect the first and second lead portions 110 through a bolt.

The second connection unit 130 may be disposed outside the step of the '-' shape, and connects the first and second conductive parts 110. In one embodiment, the second connector 130 may form a thread in the longitudinal direction to connect the first and second conductor parts 110 through a bolt.

Here, since the first and second connectors 120 and 130 may be disposed adjacent to each other, a strong electric field may be formed, and the strong electric field may reduce the performance of the conductor structure 100 for the gas insulated switchgear.

The field relaxation shield 140 may be used to mitigate a strong electric field formed in the first and second connectors 120 and 130, and may be implemented in the form of a cap surrounding the second connector 130. The field relaxation shield 130 will be described in more detail with reference to FIG. 2.

FIG. 2 is a diagram illustrating the field relaxation shield in FIG. 1.

In FIG. 2, the electric field relaxation shield 140 includes a washer 210 and a shield 220, and the washer 210 and the shield 220 are integrally formed.

The washer 210 is integrally formed with the shield 220 in the form of a flat cylindrical plate. The washer 210 may be inserted under the head of the bolt implemented on the second connection 130, and in one embodiment, the washer 210 may prevent the screw from loosening or the bolt head or fastening may be The load applied can be distributed widely.

The shield 220 may be connected to one side of the washer 210 as a cap of a hemispherical shape (not necessarily a tennis ball), and may wrap the head of the bolt implemented on the second connection 130. In an embodiment, the shield 220 may be folded to a portion connected to the washer 210 to surround the head of the bolt implemented on the second connector 130.

3 is a view illustrating a shape to which a conductor structure for a gas insulated switchgear according to an embodiment of the disclosed technology is applied.

Referring to FIG. 3, the conductor structure 100 for gas insulated switchgear is applied, and includes a plurality of conductor structures for gas insulated switchgear 100 including the electric field relaxation shield 140, and the conductor structure for gas insulated switchgear. It consists of 100 wires.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the following claims It can be understood that

110a: first lead portion 110b: second lead portion
120: first connection portion 130: second connection portion
140: electric field relaxation shield 210: washer
220: shield

Claims (3)

In the conductor structure for a gas insulated switchgear forming an energized path,
Consists of a circumferential conductive line including a circumferential hole therein, one end of the conductive wire is connected to the other conductive portion by forming a step of the '-' shape, the step of the '-' shape is exposed to the outside Conductor part;
A plurality of connection parts positioned at the 'a'-shaped step and connecting the conductive part and the other conductive part;
A conductor structure for a gas insulated switchgear including a field relaxation shield surrounding one of the plurality of connections.
The method of claim 1, wherein each of the plurality of connecting portions
A thread structure is formed in the longitudinal direction to connect the conductor part and the other conductor part through a bolt, wherein the conductor structure for a gas insulated switchgear.
The method of claim 2, wherein the field relaxation shield
And a metal cap inserted into the lower end of the bolt and surrounding the upper end of the bolt in a hemispherical shape.

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