KR100959521B1 - Load break switchgear panel of vacuum interrupter arc extinguishing type and cubicle switchgear having this - Google Patents

Abstract

PURPOSE: A vacuum interrupter type load break switchgear panel and a cubicle type switchgear thereof are provided to easily maintain and replace an instrumentation transformer, a potential transformer, and a vacuum interrupter by installing the instrumentation transformer, a potential transformer, and a vacuum interrupter outside a tank. CONSTITUTION: A main circuit operation link and a grounded circuit operation link are operated with the rotation of a manipulator(510). A main circuit insulation rod is perpendicularly moved with the operation of the main circuit operation link. A grounded circuit insulation rod is perpendicularly moved with the operation of the grounded circuit operation link. A main circuit vacuum interrupter executes a contact point input and a contact point open with the movement of the main circuit insulation rod. A grounded circuit vacuum interrupter executes the contact point input and the contact point open with the movement of the grounded circuit insulation rod. A tank(500) is filled with dry-air.

Description

LOAD BREAK SWITCHGEAR PANEL OF VACUUM INTERRUPTER ARC EXTINGUISHING TYPE AND CUBICLE SWITCHGEAR HAVING THIS}

The present invention relates to a vacuum interrupter type switchgear panel and a cubicle type switchgear having the same, and more particularly, to insulate the inside of the tank with an air-friendly dry air while the method of the load switchgear panel in a vacuum interrupter method, The inside of the tank in the transformer panel, the instrument transformer panel and the vacuum breaker panel also relates to an environmentally friendly load switch panel insulated from dry air and a cubicle type switchgear having the same.

In the power plant, electricity having a voltage of about 200,000 V is boosted to a very high voltage suitable for power transmission, and is transmitted to the primary substation. In the primary substation, the supplied power drops to 22,900 V to be supplied to the secondary substation and each customer. . At this time, the power supplied from the primary substation is supplied to the water substation facilities of each consumer through a distribution system consisting of overhead distribution line and underground distribution line, and is supplied to the low voltage consumer side through the special high-pressure consumer, high-pressure consumer and various outdoor installation transformers.

Group power demand sources such as schools, buildings, and apartment complexes are equipped with water substations that receive, for example, 22,900 V of extra-high voltage power from substations and convert them to low voltages such as 220 V to obtain the required power.

Such a water substation device is generally an automatic load switchgear panel (ALTS PANEL), load switch panel (LBS PANEL), instrument transformer panel (MOF PANEL), instrument transformer panel (PT PANEL), vacuum breaker panel (VCB PANEL) It is composed of a special high voltage transformer panel (TR PANEL), etc., and are manufactured in a separate state, each panel is connected to each other by a spacer installed on both sides of each panel to connect the functions of each other is known to be.

1 to 4 schematically show side views of a load breaker panel, an instrument transformer panel, an instrument transformer panel, and a vacuum circuit breaker panel constituting a cubic type switchgear according to the related art.

Referring to FIG. 1, a load switch 110 is disposed inside a tank 100 that is hermetically filled with SF6 gas. The load switch 110 extinguishes arcing of the contact portion with SF6 gas when the input / open is performed in a buffer manner. However, the buffer method has a problem of exposure to arc generation, and there is a problem in that SF6 gas insulating the tank 100 is one of six greenhouse gases to be reduced, so its use should be refrained.

Referring to FIG. 2, a tank 200 filled with SF6 gas is disposed in the instrument transformer panel, and the power fuse 220 prevents accident propagation by shear when an accident of a load stage occurs inside the tank 200. Instrument transformer 210 for measuring the amount of power is connected through the busbar. In addition, the WH meter box 230 is installed on the outside of the tank 200 to the side where the instrument transformer 210 is installed.

In the case of the instrument transformer panel according to the prior art, the instrument transformer 210 or the power fuse 220 is disposed in the tank 200 hermetically filled with SF6 gas, so that the inspection and repair of the instrument transformer 210 is performed. It is cumbersome to work after removing all the SF6 gas, and also, if you need to replace the instrument transformer 210, it is necessary to replace not only the instrument transformer 210, but also the entire tank, so the cost of replacement is high. There is a problem. In addition, the SF6 gas that insulates the inside of the tank 200 is one of the six greenhouse gases to be reduced, so there is a problem that its use should be refrained.

Referring to FIG. 3, the instrument transformer panel according to the related art is similar to the instrument transformer panel, and the instrument transformer 310 and the power fuse 320 connected by busbars are in the tank 300 hermetically filled with SF6 gas. It is arranged. Therefore, when checking, repairing, and replacing the instrument transformer 310, there is a difficulty to work after extracting all the SF6 gas. In addition, the SF6 gas that insulates the inside of the tank 300 is one of six greenhouse gases to be reduced, so there is a problem that its use should be refrained.

Referring to FIG. 4, the vacuum circuit breaker panel according to the related art is also disposed in the tank 400 hermetically filled with SF6 gas, similarly to the instrument transformer panel and the instrument transformer panel. Therefore, when checking, repairing, and replacing the vacuum breaker 410, there is a difficulty in performing work after removing all the SF6 gas. In addition, the SF6 gas that insulates the inside of the tank 400 is one of the six greenhouse gases to be reduced, so there is a problem that its use should be refrained.

The present invention has been made to solve the above problems, an object of the present invention, by insulating the inside of the tank dry air, which is an environmentally friendly material while the method of the load switch panel to the vacuum interrupter method, there is no direct exposure of arc generation It is to provide a vacuum interrupter load switch panel that refrains from using SF6 gas, which is a target greenhouse gas to be reduced.

Another object of the present invention is to refrain from using SF6 gas, which is a greenhouse gas to be reduced, by insulating the load switchgear panel, instrument transformer panel, instrument transformer panel, and vacuum circuit breaker panel constituting the cubicle-type switchgear with dry air. In addition, by installing each of the instrument transformer, the instrument transformer and the vacuum circuit breaker outside each tank to provide a cubicle-type switchgear to facilitate the maintenance and replacement of the instrument transformer, instrument transformer and vacuum circuit breaker.

Vacuum interrupter load switch panel according to the present invention for achieving the above object, the manipulator having a main circuit operation unit and a ground circuit operation unit; A pair of main circuit operation link and ground circuit operation link operated by the rotation of the manipulator; A plurality of main circuit insulating rods positioned below the main circuit operation link and vertically moved by an operation of the main circuit operation link; A plurality of ground circuit insulating rods positioned below the ground circuit operation link and vertically moved by an operation of the ground circuit operation link; A plurality of main circuit vacuum interrupters positioned below the main circuit insulating rod, the contact input and the contact opening being performed by the movement of the main circuit insulating rod; A plurality of ground circuit vacuum interrupters positioned below the ground circuit insulating rod and configured to insert and open a contact by moving the ground circuit insulating rod; And the main circuit operation link, the ground circuit operation link, the plurality of main circuit insulating rods, the plurality of ground circuit insulating rods, the plurality of main circuit vacuum interrupters, and the plurality of ground circuit vacuum interrupters. Air tightly filled tank; characterized in that it comprises a.

The vacuum interrupter type load breaker panel according to the present invention preferably further includes an insulation barrier for accommodating the plurality of main circuit vacuum interrupters and the plurality of ground circuit vacuum interrupters.

The cubicle type switchgear according to the present invention includes a load switchgear panel, a transformer transformer panel, a transformer transformer panel, and a vacuum circuit breaker panel, wherein each of the panels is connected to each other through a spacer, and the load switch panel is A manipulator having a main circuit operation unit and a ground circuit operation unit; A pair of main circuit operation link and ground circuit operation link operated by the rotation of the manipulator; A plurality of main circuit insulating rods positioned below the main circuit operation link and vertically moved by an operation of the main circuit operation link; A plurality of ground circuit insulating rods positioned below the ground circuit operation link and vertically moved by an operation of the ground circuit operation link; A plurality of main circuit vacuum interrupters positioned below the main circuit insulating rod to allow contact input and contact opening by movement of the main circuit insulating rod; A plurality of ground circuit vacuum interrupters positioned below the ground circuit insulating rod and configured to insert and open a contact by moving the ground circuit insulating rod; And the main circuit operation link, the ground circuit operation link, the plurality of main circuit insulating rods, the plurality of ground circuit insulating rods, the plurality of main circuit vacuum interrupters, and the plurality of ground circuit vacuum interrupters. Air tightly filled tank; characterized in that it comprises a.

Preferably, the load switch panel of the cubic type switchgear according to the present invention further includes an insulation barrier for accommodating the plurality of main circuit vacuum interrupters and the plurality of ground circuit vacuum interrupters.

The instrument transformer panel, the instrument transformer panel and the vacuum circuit breaker panel of the cubicle-type switchgear are each provided with a dry air hermetically filled tank.

An instrument transformer of the instrument transformer panel is installed outside the tank through a first bushing, an instrument transformer of the instrument transformer panel is installed outside the tank through a second bushing, and the vacuum breaker panel Is installed outside the tank.

At this time, the instrument transformer is provided with a terminal protruding shape to the side connected to the tank, the first bushing is provided on the inside of the tank based on the side of the tank to which the instrument transformer is connected, It is provided with a concave groove so that the projecting terminal of the transformer is fitted.

At this time, the instrument transformer has a terminal protruding shape to the side connected to the tank, the second bushing is provided on the inside of the tank based on the side of the tank to which the instrument transformer is connected, It is provided with a concave groove so that the protruding terminal of the transformer can be fitted.

As described above, the vacuum interrupter load switch panel according to the present invention, while the method of the load breaker panel to the vacuum interrupter method to insulate the inside of the tank by dry air, an environmentally friendly material, not only eliminates direct exposure to arc generation, but also reduces We plan effect that we do not use SF6 gas which is target greenhouse gas.

In addition, the cubicle-type switchgear according to the present invention, by insulating the load switchgear panel, instrument transformer panel, instrument transformer panel and vacuum circuit breaker panel constituting the cubicle-type switchgear dry air of SF6 gas that is a target greenhouse gas reduction Do not use, and install each of the instrument transformer, instrument transformer, and vacuum breaker outside each tank, to facilitate the maintenance and replacement of the instrument transformer, instrument transformer, vacuum breaker. In addition, when the instrument transformer is broken, only the instrument transformer can be replaced, thereby reducing the cost.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.

Figures 5a and 5b is a side view and a perspective view schematically showing one embodiment of a vacuum interrupter load switch panel according to the present invention. FIG. 5C is a front view schematically showing only some components of FIG. 5A by extraction. FIG. 5D is a side view schematically showing only a part of the configuration of FIG. 5A.

5A to 5D, the vacuum interrupter type load switch panel according to the present invention includes an operator 510; A pair of operation links 520; A plurality of insulating rods 530; A plurality of vacuum interrupters 540; And a tank 500 accommodating the pair of operation links 520, the plurality of insulating rods 530, and the plurality of vacuum interrupters 540. The manipulator 510 includes a main circuit manipulator 512 and a ground circuit manipulator 514. The operation link 520 is operated by the rotation of the manipulator 510, and is composed of a pair of a main circuit operation link 522 and a ground circuit operation link 524. The plurality of insulating rods 530 includes a plurality of main circuit insulating rods 532 and a plurality of ground circuit insulating rods 534. The plurality of main circuit insulating rods 532 and the plurality of ground circuit insulating rods 534 are positioned below the main circuit operating link 522 and the ground circuit operating link 524, respectively. 522 and the ground circuit operation link 524 is moved in the vertical direction, respectively. The plurality of vacuum interrupters 540 includes a plurality of main circuit vacuum interrupters 542 and a plurality of ground circuit vacuum interrupters 544. A plurality of main circuit vacuum interrupters 542 and a plurality of ground circuit vacuum interrupters 544 are positioned below the main circuit insulating rod 532 and the ground circuit insulating rod 534, respectively. ) And contact opening and contact opening are performed by the movement of the ground circuit insulating rod 534. In the present embodiment, the plurality of vacuum interrupters 540 are accommodated in the insulating barrier 550, but in another alternative embodiment, the insulating barrier 550 may be omitted. The tank 500 includes the main circuit operation link 522, the ground circuit operation link 524, the plurality of main circuit insulating rods 532, the plurality of ground circuit insulating rods 534, and the plurality of windings. The furnace vacuum interrupter 542 and the plurality of ground circuit vacuum interrupters 544 are housed, and the inside thereof is hermetically filled with dry air.

An operation of the vacuum interrupter load switch panel according to the present invention will be described with reference to FIGS. 5C and 5D.

First, the main circuit contact input operation will be described. To allow the current to flow, the main circuit operation portion 512 of the manipulator 510 rotates clockwise automatically or by a manual handle. The rotation of the spring (not shown) causes the main shaft 516 to rotate while the latch (not shown) is released by the rotation. The main circuit operation link 522 is operated by the rotation of the main shaft 516, and the main circuit insulating rod 532 is moved vertically downward by the operation of the main circuit operation link 522. The contact of the main circuit vacuum interrupter 542 is vertically moved by the vertical downward movement of the main circuit insulating rod 532, and as a result, current flows.

Next, the main circuit contact opening operation will be described. When the current is interrupted, the main circuit operation unit 512 of the manipulator 510 rotates counterclockwise automatically or by a manual handle. The rotation of the spring (not shown) causes the latch (not shown) to be released and the main shaft 516 rotates. The main circuit operation link 522 operates by the rotation of the main shaft 516, and the main circuit insulating rod 532 moves vertically upward by the operation of the main circuit operation link 522. The contact of the main circuit vacuum interrupter 542 is opened by the vertical upward movement of the main circuit insulating rod 532, and as a result, the current is blocked.

Next, the ground circuit contact closing operation will be described. When removing the charging current charged in the cable, the ground circuit operation unit 514 of the manipulator 510 is rotated counterclockwise automatically or by a manual handle. The rotation of the spring (not shown) causes the latch (not shown) to be released and the main shaft 516 rotates. The ground circuit operation link 524 is operated by the rotation of the main shaft 516, and the ground circuit insulation rod 534 is moved vertically downward by the operation of the ground circuit operation link 524. The contact of the ground circuit vacuum interrupter 544 is caused by the vertical downward movement of the ground circuit insulating rod 534, so that the current charged in the cable is removed.

Next, the ground circuit contact opening operation will be described. After removing the charging current from the cable, the ground circuit operating portion 514 of the manipulator 510 rotates clockwise automatically or by a manual handle. The rotation of the spring (not shown) causes the latch (not shown) to be released and the main shaft 516 rotates. The ground circuit operation link 524 is operated by the rotation of the main shaft 516, and the ground circuit insulation rod 534 is moved vertically upward by the operation of the ground circuit operation link 524. The vertical opening of the ground circuit insulating rod 534 causes the contact of the ground circuit vacuum interrupter 544 to be opened, and as a result, the ground circuit is opened.

As described above, according to the present invention, a load interrupter is used as a vacuum interrupter method to eliminate direct exposure of arc generation, and to insulate the inside of the tank by dry air, which is an environmentally friendly material, to avoid using SF6 gas, which is a target greenhouse gas. Promote.

Figure 6a is a side view schematically showing one embodiment of the transformer panel for the instrument constituting the cubicle type opening and closing device according to the present invention. 6B and 6C are side and front views schematically showing one embodiment of the instrument transformer.

6A to 6C, a tank 600 filled with dry air is disposed in the instrument transformer panel. Unlike the conventional technology, the instrument transformer panel according to the present invention is connected to one side of the tank 600 by drawing the instrument transformer 610 to the outside of the tank 600. The instrument transformer 610 is provided with two protruding terminals 612 and 614, which are provided on the connection side to the tank 600 of the instrument transformer 610. The protruding terminals 612 and 614 may include a primary protruding terminal 612 and a secondary protruding terminal 614. The protruding terminals 612 and 614 are coupled to the first bushing 615 of the draw type provided inside the tank 600. In more detail, the pull-out first bushing 615 includes a primary side bushing 616 and a secondary side bushing 618. Each of the primary side bushing 616 and the secondary side bushing 618 is provided with a concave groove into which the protruding terminals 612 and 614 of the instrument transformer are fitted. Accordingly, the primary protruding terminal 612 of the instrument transformer 610 is coupled to the concave groove of the primary side bushing 616, and the secondary protruding terminal 614 of the instrument transformer 610 is the secondary side bushing 618. Is coupled to the recessed groove. The instrument transformer 610 is connected to the busbar installed in the tank 600 through the coupling of the instrument transformer 610 to the first bushing 615 of the pull-out type.

Thus, according to the present invention, since the instrument transformer is installed outside the tank of the instrument transformer panel, it is easy to repair and inspect the instrument transformer, and in case of failure of the instrument transformer, only the instrument transformer, not the entire tank, can be replaced. As a result, cost reduction can be achieved. Nevertheless, the protruding terminal of the instrument transformer is coupled to the concave groove of the bushing provided inside the tank, so that the extra high voltage is not exposed and thus the safety is excellent. In addition, by insulating the inside of the tank with dry air, which is an environmentally friendly material, the effect of not using SF6 gas, which is the target greenhouse gas, is reduced.

7 is a side view schematically showing an embodiment of an instrument transformer panel constituting a cubicle type opening and closing device according to the present invention.

Referring to FIG. 7, a tank 700 hermetically filled with dry air is disposed in the instrument transformer panel. Unlike the prior art, the instrument transformer panel according to the present invention, the instrument transformer 710 is drawn out of the tank 700 is connected to one side of the tank 700. The instrument transformer 710 has a protruding terminal to the side connected to the tank 700, the protruding terminal is coupled to the second bushing 715 of the draw-out type provided on the inside of the tank 700 It is. The second bushing 715 is provided on the inner side of the tank with respect to the side of the tank to which the instrument transformer 710 is connected, and a concave groove so that the protruding terminal of the instrument transformer 710 can be fitted. Equipped with. Thus, according to the present invention, since the instrument transformer is installed outside the tank of the instrument transformer panel, it is easy to repair and inspect the instrument transformer, and when the instrument transformer fails, the instrument is not the entire tank of the instrument transformer panel. Only the transformer can be replaced, which can reduce the cost. In addition, by insulating the inside of the tank with dry air, which is an environmentally friendly material, the effect of not using SF6 gas, which is the target greenhouse gas, is reduced.

Figure 8 is a side view schematically showing one embodiment of a vacuum circuit breaker panel constituting a cubicle type opening and closing device according to the invention.

Referring to FIG. 8, the vacuum breaker panel is provided with a dry air hermetically filled tank 800. In the vacuum breaker panel according to the present invention, unlike the prior art, the vacuum breaker 810 is drawn out of the tank 800. Therefore, the effect which is easy to repair and inspect a vacuum circuit breaker can be aimed at. In addition, by insulating the inside of the tank with dry air, which is an environmentally friendly material, the effect of not using SF6 gas, which is the target greenhouse gas, is reduced.

Figure 9 is a front view schematically showing an embodiment of a cubicle type opening and closing apparatus according to the present invention.

Referring to Figure 9, the cubicle-type switchgear includes a load breaker panel (LBS), instrument transformer panel (MOF), instrument transformer panel (PT) and vacuum breaker panel (VCB), each panel comprises a spacer Are connected to each other.

While specific embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments, and the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Anyone of ordinary skill in the art can make various modifications, as well as such modifications are within the scope of the claims.

Figure 1 schematically shows a side view of a load switch panel constituting a cubicle type switchgear according to the prior art.

Figure 2 schematically shows a side view of the transformer panel for the instrument constituting the cubicle type opening and closing device according to the prior art.

Figure 3 schematically shows a side view of the instrument transformer panel constituting the cubicle-type switchgear according to the prior art.

Figure 4 schematically shows a side view of a vacuum breaker panel constituting a cubicle type opening and closing device according to the prior art.

Figure 5a is a side view schematically showing an embodiment of a vacuum interrupter load switch panel according to the present invention.

Figure 5b is a perspective view schematically showing one embodiment of a vacuum interrupter load switch panel according to the present invention.

FIG. 5C is a schematic front view of only some of the components of FIG. 5A.

FIG. 5D is a side view schematically showing only a part of the configuration of FIG. 5A.

Figure 6a is a side view schematically showing one embodiment of the transformer panel for the instrument constituting the cubicle type opening and closing device according to the present invention.

6B is a side view schematically showing one embodiment of an instrument transformer.

6C is a front view schematically showing one embodiment of the instrument transformer.

7 is a side view schematically showing an embodiment of an instrument transformer panel constituting a cubicle type opening and closing device according to the present invention.

8 is a side view schematically showing an embodiment of a vacuum circuit breaker panel constituting a cubicle type opening and closing device according to the present invention.

Figure 9 is a front view schematically showing an embodiment of a cubicle type opening and closing apparatus according to the present invention.

Claims (7)

A manipulator having a main circuit operation unit and a ground circuit operation unit; A pair of main circuit operation link and ground circuit operation link operated by the rotation of the manipulator; A plurality of main circuit insulating rods positioned below the main circuit operation link and vertically moved by an operation of the main circuit operation link; A plurality of ground circuit insulating rods positioned below the ground circuit operation link and vertically moved by an operation of the ground circuit operation link; A plurality of main circuit vacuum interrupters positioned below the main circuit insulating rod, the contact input and the contact opening being performed by the movement of the main circuit insulating rod; A plurality of ground circuit vacuum interrupters positioned below the ground circuit insulating rod and configured to insert and open a contact by moving the ground circuit insulating rod; And The main circuit operation link, the ground circuit operation link, the plurality of main circuit insulating rods, the plurality of ground circuit insulating rods, the plurality of main circuit vacuum interrupters and the plurality of ground circuit vacuum interrupters are housed. A vacuum interrupter type load switch panel comprising a; airtightly filled tank. The vacuum interrupter load switch panel according to claim 1, further comprising an insulation barrier for accommodating the plurality of main circuit vacuum interrupters and the plurality of ground circuit vacuum interrupters. A cubicle type switchgear including a switchgear panel, a transformer transformer panel, a transformer transformer panel and a vacuum circuit breaker panel, wherein each panel is connected to each other through a spacer, The load switch panel, A manipulator having a main circuit operation unit and a ground circuit operation unit; A pair of main circuit operation link and ground circuit operation link operated by the rotation of the manipulator; A plurality of main circuit insulating rods positioned below the main circuit operation link and vertically moved by an operation of the main circuit operation link; A plurality of ground circuit insulating rods positioned below the ground circuit operation link and vertically moved by an operation of the ground circuit operation link; A plurality of main circuit vacuum interrupters positioned below the main circuit insulating rod, the contact input and the contact opening being performed by the movement of the main circuit insulating rod; A plurality of ground circuit vacuum interrupters positioned below the ground circuit insulating rod and configured to insert and open a contact by moving the ground circuit insulating rod; And The main circuit operation link, the ground circuit operation link, the plurality of main circuit insulating rods, the plurality of ground circuit insulating rods, the plurality of main circuit vacuum interrupters and the plurality of ground circuit vacuum interrupters are housed. Cubicle-type switchgear comprising a; airtightly filled tank. 4. The cubic type switchgear according to claim 3, further comprising an insulating barrier for receiving the plurality of main circuit vacuum interrupters and the plurality of ground circuit vacuum interrupters. The method according to claim 3 or 4, The instrument transformer panel, the instrument transformer panel and the vacuum circuit breaker panel each have a dry air hermetically filled tank, The gauge transformer of the gauge transformer panel is installed outside the tank through the first bushing, An instrument transformer of the instrument transformer panel is installed outside the tank through a second bushing, And a vacuum breaker of the vacuum breaker panel is installed outside the tank. According to claim 5, The instrument transformer is provided with a terminal protruding shape to the side connected to the tank, The first bushing is provided on the inside of the tank on the basis of the side of the tank to which the instrument transformer is connected, the cubicle type characterized in that it has a concave groove so that the protruding terminal of the instrument transformer is fitted. Switchgear. According to claim 5, The instrument transformer has a terminal protruding shape to the side connected to the tank, The second bushing is provided on the inside of the tank based on the side of the tank to which the instrument transformer is connected, the cubicle type characterized in that it has a concave groove so that the protruding terminal of the instrument transformer can be fitted. Switchgear.

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