KR100281086B1 - Gas Insulated Switchgear - Google Patents

Abstract

The present invention relates to a gas insulated switchgear configured to reduce the size of a bus disconnector / grounding switch unit by configuring a bus grounding switch and a bus disconnector in a vertical direction with each conductor.

To this end, the present invention provides a first mechanism for loading a first movable contactor for contacting / shorting the disconnector to a fixed contactor of the first conductor installed on one side of the tank, the second conductor provided on the lower portion of the tank, and the second conductor. And a second mechanism for loading a second movable contactor to contact / short the ground switch to the fixed contactor of the first conductor; The first and second movable contactors 52 and 62 operated by the first and second mechanism parts 5 and 6 are loaded vertically, and the first and second movable contactors are loaded on the direction line in which the movable contactors are loaded. The fixed contactors 3a and 3b are installed to be connectable.

Description

Gas Insulated Switchgear

The present invention relates to a gas insulated switchgear, and more particularly, the bus ground switch and the bus breaker are configured to be in contact with each conductor in a vertical direction to reduce the size of the bus disconnector / ground breaker unit. I would have to.

In general, a gas insulated switchgear (GIS) uses SF6 gas, which has excellent insulation performance and arc extinguishing function (to suppress arcing), in a metal sealed container (tank) as an insulating medium to accommodate conductors and various protective devices for reliability. As an improved water substation facility, the whole system is constructed by uniting and combining various devices and connecting pipes.

The gas insulated switchgear is largely composed of a disconnector / ground switch unit and a potential transfer, and the two units are connected horizontally or vertically by a straight connection tube.

1 is a block diagram illustrating a conventional disconnector / earth breaker unit constituting a gas insulated switchgear, which is a sealed tank (1) filled with insulation gas therein, and The first conductor 3 fixed to the inner side of the tank by the insulating spacer 2, the second conductor 4 installed in the inner lower portion of the tank 1 and in contact with the disconnector, and the disconnector And a first mechanism part 5 for shorting / shorting, and a second mechanism part 6 for contacting / shorting the ground switch to the first conductor 3.

On the other hand, a first fixed contact 3a is provided at the end facing the second mechanism part 6 of the first conductor 3, and a first end at the end facing the first mechanism part 5 of the second conductor 4 is provided. 2, the fixed contact 4a is provided.

In addition, the first mechanism 5 includes a drive motor 50 for generating power, a first link 51 rotating in a clockwise or counterclockwise direction on the drawing by the power of the drive motor, and the first It consists of a first movable contact 52 which is in contact with and shorted with the second fixed contact 4a of the second conductor 4 while vertically reciprocating along the rotational operation of the link.

In addition, the second mechanism 6 includes a handle 60 which is operated by a manual force, a second link 61 which rotates clockwise or counterclockwise in the drawing by the power of the handle, and the second It consists of the 2nd movable contactor 62 which contacts / shorts the 1st fixed contactor 3a of the 1st conductor 3, while making a horizontal reciprocating motion according to the rotation operation of a link.

The opening / closing operation of the conventional disconnector / ground breaker unit configured as described above is as follows.

First, when the disconnector is connected to the second conductor 4, the first link 51 is driven clockwise from the position of FIG. 1 as the driving motor 50 constituting the first mechanism 5 is driven. As the first movable contactor 52 which is rotated and connected to the first link moves vertically downward and is introduced into the second stationary contactor 4a of the second conductor 4 located on the movement path, the disconnector is electrically disconnected. It becomes a state.

On the contrary, when switching to the closed state, the reverse operation of the opening operation may be performed in reverse order.

On the other hand, when the grounding switch is connected to the first conductor 3, the handle 60 constituting the second mechanism 6 is operated by manual force, so that the second link 61 is viewed from the position in FIG. As the second movable contact 62 connected to the second link moves horizontally as it is rotated in the direction, the ground breaker is electrically connected to the first fixed contact 3a of the first conductor 3 located on the movement path. In the open state.

On the contrary, when switching to the closed state, the reverse operation of the opening operation may be performed in reverse order.

However, the conventional disconnector / ground breaker unit requires a space portion as much as possible in the motion structure of the operation structure in which the terminal (movable contactor) on the ground switch side operates in a horizontal direction to form an open / close circuit of the ground switch. The size of 1) was inevitably increased, which caused a problem of deteriorating the handleability of the device.

The present invention has been made to solve the above-mentioned conventional problems, the object is to reduce the size of the disconnecting device / grounding switch unit.

In order to achieve the above object, the present invention provides a first movable contactor for contacting / shorting the disconnector to a first contactor installed on one side of the tank, a second conductor disposed below the tank, and a fixed contactor of the second conductor. A first mechanism portion for loading and a second mechanism portion for loading a second movable contactor for contacting / shorting the ground switch to the fixed contactor of the first conductor; A first and second movable contactors operated by the first and second mechanism parts to be loaded in a vertical direction, and the first and second fixed contacts are connected to each other on a direction line in which the movable contacts are loaded. An insulating switchgear is provided.

1 is a configuration diagram of a conventional bus disconnector / earth breaker unit

2 is a block diagram of the present invention bus bar disconnector / earth breaker unit

3 is a state diagram in which the bus disconnector is electrically opened in the bus disconnector / earth breaker unit of the present invention.

4 is a state diagram in which the earth circuit breaker for the bus bar is electrically opened in the bus disconnector / ground breaker unit of the present invention.

Explanation of symbols for main parts of the drawings

1: tank 3: first conductor

3a: first fixed contact 4: second conductor

4a: second fixed contactor 5: first mechanism part

6: second mechanism part 7: movable conductor

8: connecting rod 52: first movable contactor

62: second movable contactor

2 is a configuration diagram of the bus bar disconnector / ground breaker unit of the present invention, FIG. 3 is a state diagram in which a bus disconnector is electrically opened in a bus disconnector / ground breaker unit of the present invention, and FIG. 4 is a bus bar of the present invention. As a state diagram in which the earth circuit breaker for buses in the disconnector / ground breaker unit is electrically opened, the gas insulated switchgear according to the present invention will be described in detail with reference to the accompanying drawings.

In summary, the gist of the present invention is configured to allow the movable contactors on the disconnecting side and the ground breaker side to be loaded in the vertical direction, thereby greatly reducing the size of the apparatus.

To this end, the disconnecting device side mechanism part is parallel to the first conductor, and the grounding switch side mechanism part is displaced to be located at the top of the tank, and each movable contact is configured accordingly.

In more detail, the first conductor 3 is provided by an insulating spacer 2 on one side of the tank 1 constituting the external shape of the disconnector / earth breaker, and the tank 1 The second conductor 4 is provided in the lower part of the inside.

Meanwhile, the first mechanism part 5 for contacting / shorting the disconnector is installed at a position parallel to the first conductor 3, and the first movable part 52 is operated in the vertical direction by the first mechanism part. The movable conductor 7 was installed in the longitudinal direction at the inner end of the first conductor 3, and the first movable contact 52 was loaded into the movable conductor.

At this time, the first movable contact 52 is connected by the first mechanism portion 5 and the connecting rod 8 to enable the vertical reciprocating motion according to the rotation of the connecting rod, the rotational force of the connecting rod (8) The grant means is made by the same drive motor 50 as before.

In the above, the connecting rod 8 has a rotational movement, and the first movable contact 52 has a linear movement, so that the interlocking movement can be made. 1 Long hole (8a) was formed in the connection portion with the movable contact 52 to enable a smooth linking operation.

In addition, a first fixed contactor 3a is provided on the upper end of the movable conductor 7, and a second mechanism part 6 provided with a second movable contactor 62 is provided directly above the second conductor part. The second movable contactor 62 is in contact with the first stationary contactor 3a while the vertical movable reciprocation by the power of the power supply / short, and at this time, the imparting means for operating the second movable contactor 62 By the handle 60 and the second link 61 as before.

The operation of the present invention configured as described above will be described in detail with reference to FIGS. 3 and 4.

First, the closing operation of the disconnecting device will be described. As shown in FIG. 2, the first movable contact 52, which is located in the movable conductor 7 in a loadable manner, is provided with the second fixing member provided on the upper end of the second conductor 4. In the state of being electrically disconnected from the contactor 4a, the first movable contactor connected thereto as the connecting rod 8 rotates counterclockwise in the drawing by the power of the driving motor 50 at the time of inputting. 52 is moved vertically downward along the inner surface of the movable conductor 7 and put into the second fixed contactor 4a located on the traveling path so that the disconnector is in an electrically open state.

On the contrary, according to the reverse order of the closing operation, it is understood that the first movable contact 52 is spaced apart from the second fixed contact 4a to be in an electrically closed state.

On the other hand, the closing operation of the grounding switch is closed as the second movable contact 62 installed in the second mechanism (6) spaced apart from the first fixed contact (3a) provided on the upper end of the movable conductor (7) In the state, when the second link 61 is rotated counterclockwise in the drawing by the manual force of the handle 60, the second movable contactor 62 connected thereto moves vertically downward in the traveling direction. The ground switch is electrically opened by being put into the first fixed contactor 3a located at the ground.

It is also understood that the ground switch is electrically disconnected according to the reverse order of the closing operation.

According to the present invention as described above, in the case of contacting / shorting the disconnecting device and the grounding switch with each conductor, the width of the tank can be reduced by operating each movable contactor in the vertical direction, thereby improving the handleability of the device. There is this.

In addition, the material cost can be reduced due to the reduction in size, so there is an advantage in securing price competitiveness.

Claims (2)

A first mechanism provided on one side of the tank, a second conductor provided on the lower side of the tank, a first mechanism portion for loading the first movable contactor to contact / short the fixed contactor of the second conductor, and the first Comprising a second mechanism for loading a second movable contactor to contact / short the ground switch to a fixed contactor of the conductor; A first and second movable contactors operated by the first and second mechanism parts to be loaded in a vertical direction, and the first and second fixed contacts are connected to each other on a direction line in which the movable contacts are loaded. Insulated switchgear. The method of claim 1, In order for the first and the second movable contactor to be loaded in the vertical direction and to contact / short the first and the second fixed contactor, The first mechanism is arranged in a position parallel to the first conductor, the movable conductor is provided at the inner end of the first conductor in the longitudinal direction, and the first movable contactor is installed in the movable conductor so as to be loaded. The first movable contactor is connected to the first mechanism by a connecting rod, and on the upper part of the movable conductor, a second mechanism is provided with a second movable contactor, and the first movable contactor moves up and down by the power of the first mechanism. A gas insulated switchgear, which is contacted / shorted with the second conductor, and the second movable contactor is contacted / shorted with the first conductor while lifting and lowering by the power of the second mechanism part.