KR102215103B1 - receiving electricity equipment with highvoltage - Google Patents

Abstract

In the present invention, a transformer case filled with insulating oil inside a main frame and a mechanical box case are divided and installed into a plurality of cases while the insulating oil is filled, and the transformer case and the mechanical box case are installed to supply power through bushings or cables. , The mechanical box case has a configuration in which the ASS and the fuse and the arrester and the MOF are sequentially connected, and the ASS is in one first insulating space, the fuse and the arrester are in one third insulating space, and another MOF is in the fourth. Each is separately installed to form an insulating space, and at least one selected from the first to fourth insulating spaces of the mechanical box case relates to an integrated extra-high voltage water distribution facility connected to each other through a bushing.

Description

Receiving electricity equipment with high voltage

In the present invention, a transformer case filled with insulating oil inside a main frame and a mechanical box case are divided and installed into a plurality of cases while the insulating oil is filled, and the transformer case and the mechanical box case are installed to supply power through bushings or cables. , The mechanical box case has a configuration in which the ASS and the fuse and the arrester and the MOF are sequentially connected, and the ASS is in one first insulating space, the fuse and the arrester are in one third insulating space, and another MOF is in the fourth. Each is separately installed to form an insulating space, and at least one selected from the first to fourth insulating spaces of the mechanical box case relates to an integrated extra-high voltage water distribution facility connected to each other through a bushing.

In general, water substation facilities are devices installed in power plants, substations, or buildings with electrical facilities, so that safety devices, instruments, indicators, relays, etc. are placed inside to facilitate opening and closing of converters or controlling devices. It is distinguished.

In addition, the water substation facility is divided into a special high-voltage part and a transformer part, the special high-voltage part functions to receive high-voltage or special high-voltage electricity supplied from the outside, and the transformer part is suitable for the load of the customer. It has a function of reducing pressure, and the low-pressure part has a function of sending low-pressure electricity to multiple loads.

In the above-mentioned air-insulated substation equipment, since the extra high voltage part and the transformer part constituting the substation equipment must maintain an insulation distance for insulation between each other, the volume of the substation facility increases as well as the weight. When installing, it is not easy to transport and install the substation.

In addition, since the outside of the extra-high voltage part and the charging part (connection point between conductors) of the transformer part is not insulated, there is a high risk of electric shock.

In other words, if the substation facility is installed underground or outdoors with high humidity, there is a risk of safety accidents due to leakage current of the extra high voltage part, the transformer part and the low voltage part, so the space where the substation facility will be installed before installing the substation facility is waterproofed. Of course, the manager must check the humidity of the space where the substation facility is installed from time to time.

In order to solve these shortcomings, registered utility model No. 435604 discloses an enclosed power receiving facility for the charging part, and the configuration is as shown in Fig. 1, in the interior of the box-shaped body 28, an automatic switch, lightning arrester, power fuse, and instrument It is divided into a power entry panel with a transformer, etc., a transformer for power and a transformer with a cooler, and an air circuit breaker (6) and a low-pressure MCCB and a low-pressure panel with various instruments. The molded power fuse cartridge 3 is combined into one device and connected to the instrument transformer 4 installed at the top by a cable connector 27.

In addition, a cable connector 27 is used for the power input and output terminals to the instrument transformer 4, and the power transformer has a spare terminal 14 for expansion on the primary side, and a thermometer 21 is provided. The heat exchanger 15 that can be separated is installed in the radiator of the transformer, and the refrigerant is circulated by a cooling unit installed with a cooler 16 in the lower part, and the low-voltage switchgear is divided into upper and lower sides. The low pressure air circuit breaker 6 and the emergency changeover switch are installed, and a plurality of MCCBs 7 are installed at the bottom.

However, the power receiving facility as described above is a connection structure based on the cable wiring method in a straight line between the fault section automatic switch and instrument transformer and the transformer, and the connection between the transformer and the instrument transformer, and the instrument transformer and the fault section automatic switch is also an elbow. There is a disadvantage in that it is connected by cable wiring by means of a connection material, so that compactness cannot be realized due to the complexity of the cable wiring.

In addition, even if some of the automatic switch, instrument transformer and transformer in the faulty section are damaged, it is inconvenient to repair after exposing the whole.

In addition, the power receiving facility has a disadvantage in that the high-voltage connection of the entire entrance panel is shielded, so that residual current remains during inspection and repair, so that there is a risk of safety accidents.

An object of the present invention to improve the above-described problems in the related art is to separate and insulate each component having different characteristics and uses, and to facilitate maintenance and minimize the volume by replacing only the separated components. It minimizes the restrictions on installation by appropriately changing the layout according to the area of use, and minimizes interference by separating the transformer and MOF that generate high heat, and prevents the risk of safety accidents. It is to provide an integrated extra-high voltage power distribution facility.

In order to achieve the above object, the present invention is divided into a plurality of a transformer case filled with insulating oil and a mechanical box case filled with insulating oil, and the transformer case and the mechanical box case are powered through a bushing or a cable. Is installed to supply

The mechanical box case is a configuration in which the ASS and the fuse and the arrester and the MOF are sequentially connected, and the ASS is divided and installed so that the fuse and the arrester and the MOF form another second insulating space. One first insulating space fuse and one arrester are selected from among the configurations that are separately installed so that the third insulating space MOF forms another fourth insulating space,

At least one selected from the first insulating space to the fourth insulating space of the mechanical box case is provided with an integrated extra-high voltage water distribution facility that is connected to each other through a bushing.

In addition, the mechanical box case is provided with an opening for accommodating ASS, MOF, etc. on one side, and a drain hole is provided on one side of the lower side so that the injection hole is drained on one side of the upper part to allow the injection of insulating oil, and the opening is recessed inward. It is provided with a supporting jaw to provide an integrated extra-high pressure water distribution facility in which the cover is coupled through a packing material.

In addition, a through hole for bushing coupling is formed in the mechanical box case, the mechanical box case, the mechanical box case, and the transformer case, and female and male bushings through which terminals having screws at both ends are connected, and the through hole has a U-shaped cross section. In-ring is interposed to provide an integrated extra-high voltage power distribution facility that is closely coupled to the bushing.

In addition, the mechanical box case and the transformer case are provided with a flange on one side thereof to provide an integrated extra-high voltage power distribution facility in which pieces are integrally coupled.

Subsequently, the bushing provides an integrated extra-high voltage water distribution facility that is installed so that one end of the bushing is positioned above the level of the insulating oil to be filled when it is mounted so that the end thereof is exposed to the outside.

As described above, according to the present invention, each component with different characteristics and uses is separated and insulated, and maintenance is easy, as well as the volume is minimized, and the arrangement is appropriate according to the area of use. It has the effect of minimizing the restrictions due to installation, minimizing interference by separating the transformer and MOF, etc. that generate high heat, and preventing the risk of safety accidents by removing residual current.

1 is a perspective view showing a conventional transformer.
2 is a side view showing an integrated power distribution facility according to the present invention.
3 is a side view showing a separate type water distribution facility according to the present invention
Figure 4 is a plan view showing a separate type water distribution facility according to the present invention
5 is an exploded perspective view showing a separate type water distribution facility according to the present invention.
6 is a side view showing a separate type water distribution facility according to an embodiment of the present invention
7 is a side view showing a separate type water distribution facility according to a second embodiment of the present invention
8 is a side view showing a separate type power distribution facility according to a third embodiment of the present invention.
9 is a side view showing a separate type water distribution facility according to a fourth embodiment of the present invention.
10 is a side view showing a separate type power distribution facility according to a fifth embodiment of the present invention.
11 is a side view showing a separate type power distribution facility according to a sixth embodiment of the present invention.
12 is a plan view showing a power distribution facility according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the power distribution facility 100 of the present invention, a transformer case 130 filled with insulating oil and a mechanical box case 150 divided into a plurality of parts while being filled with insulating oil are installed inside the main frame 110.

In this case, the transformer case and the mechanical box case may be configured as an integral structure divided into a plurality of insulating spaces inside, or may be manufactured as a separate type and configured to be integrally combined.

In addition, when the transformer case and the mechanical box case are formed in an integrated configuration, a plurality of chambers 500 are provided through a plurality of partition plates 513 provided inside the outer casing 511, and each of the chambers 500 Is connected through the bushing 200.

At this time, the chamber is equipped with a first insulating space 151 in which an ASS (failure section switch) 610 is built, a fuse 630 and a lightning arrester 650 and a MOF (instrument transformer) 670 at the same time. A second insulating space is formed.

In addition, when the transformer case and the mechanical box case have a separate configuration, they may be connected through a cable 300.

In addition, when the mechanical box case is also divided into a plurality, it may have an integrated structure provided with a plurality of chambers through the above-described diaphragm, or a separate structure that is separately installed and closely connected to each other.

At this time, the mechanical case cases are connected through bushings, respectively.

In addition, the mechanical box case 150 has a configuration in which the ASS 610 and the fuse 630 and the arrester 650 and the MOF 670 are sequentially connected.

Subsequently, the mechanical box case 150 includes a first insulating space 151 in which an ASS (failure section switch) 610 is built, a fuse 630 and a lightning arrester 650 and an MOF (instrument transformer). It may be separately installed so as to form another second insulating space 153 in which 670 is simultaneously embedded.

In addition, the mechanical box case 150 includes one first insulating space 155 in which an ASS is built, another third insulating space 157 in which a fuse and a lightning arrester are simultaneously built, and another one in which the MOF is built-in. It may be separately installed to form the fourth insulating space 159 of.

In addition, the ASS 610, the fuse 630, and the arrester 650 are divided to form one sixth insulating space (not shown) / another fourth insulating space 159 in which the MOF is built. May be installed.

Subsequently, OLBS (ground load switch) connected through a bushing with any one selected from among the ASS (failure section switch) 610, fuse 630 and lightning arrester 650 and MOF (instrument transformer) 670 ) 300 may be mounted in the fifth insulating space 370.

At this time, at least one selected from the first to sixth insulating spaces of the mechanical box case is connected to each other through the bushing 200 as described above.

In addition, the mechanical box case 150 is provided with an opening 152 for accommodating ASS, MOF, etc. on one side, and an injection hole 154 on one side of the upper side to allow drainage of the insulating oil is provided. Each is provided with 156.

In addition, the opening portion 152 is provided with a support jaw 158 that is recessed inward so that the cover 700 is coupled through the packing material 710.

At this time, an injection port may be connected to the cover.

In addition, a through hole (h) for coupling a bushing is formed in the mechanical box case, the mechanical box case/mechanical box case, and the transformer case, so that the female and male bushings 200 through which terminals having screws at both ends are passed are coupled.

In this case, a ring 240 having a U-shaped cross section is interposed in the through hole to be closely coupled to the bushing.

In addition, the mechanical box case and the transformer case are provided with a flange 800 on one side thereof and integrally coupled to the piece 810.

Subsequently, the bushing 200 is installed so that one end of the bushing 200 is positioned above the level of the insulating oil to be filled when it is mounted so that one end thereof is exposed to the outside.

In addition, the bushing 200 is a combination structure of the upper bushing 211 and the lower bushing 213 made of a set, and a plurality of rings 240 are inserted into the coupling portion, and the terminal 219 passes through the upper and lower bushings. ) Is inserted.

In addition, the mechanical box case may have an integral configuration in which the interior of one enclosure is divided into a plurality of chambers, that is, a plurality of insulating spaces, or a separate case may be manufactured in a separate type and integrally coupled to the side or upper portion of the transformer case. .

When the mechanical box case 150 is configured as a separate type, the mechanical box case 150 includes an ASS, a fuse, and a lightning arrester in one case at the same time, and the MOF is built in one case. It may be configured to be integrally coupled to the side or upper part of the transformer case.

On the other hand, as shown in Figure 12, any one selected from the ASS / fuse and arrester / MOF has an oil immersed load break switch (OLBS) 300 connected or separated by the opening and closing operation of the handle. May be more connected.

At this time, the OLBS 300 is connected to the ground terminal of the ground through the discharge bushing 310 when connected to any one selected from among ASS/fuse and arrester/MOF and installed to discharge.

In addition, the OLBS 300 is installed so that the discharge bushing 310 is exposed to the outside of the fifth insulating space while being embedded in the fifth insulating space 370 filled with insulating oil.

The operation of the present invention made of the above configuration will be described.

2 to 12, in the present invention, a transformer unit 138 is disposed under the inner surface of the transformer case 130 filled with insulating oil.

In addition, an ASS 610 and a fuse 630, a lightning arrester 650, and an MOF 670 constituting an extra-high voltage part are disposed inside the mechanical box case 150 located at one side of the transformer unit 138, respectively. .

At this time, the switch terminal, the transformer terminal, and the fuse terminal are exposed to the outside of the mechanical box case 150 so as to be insulated, and power is supplied to the input side of the switch terminal.

In addition, a fuse 630 is connected to one side of the MOF 670, and one side of the fuse 630 is connected to the arrester 650.

In addition, the ASS 610 connected to the fuse 650 is connected to the MOF 670, and the MOF 670 is connected to the transformer unit 138.

At this time, the ASS 610 and the MOF 670 may be assembled by changing their mounting order inside the mechanical box case.

The transformer unit 113 of the present invention is disposed so as to be insulated from the transformer case when it is embedded in the transformer case 130, and the insulating oil is filled therein, and the ASS 610 and the MOF 670 are also mechanical box case 150 ), it is placed so that it is insulated from the machine case case, and the inside of it is filled with insulating oil.

In the present invention having such a configuration, the ASS 610 to which the primary side of the supply power is connected, the fuse 630 that is connected to the secondary side of the ASS 610 to prevent accidental spread as a front end in the event of an accident at the load end, and one end of the ASS While connected to the secondary side of 610 and the primary side of the fuse 630, the other end is connected to the lightning arrester grounded outside of the transformer case 130.

Further, the MOF 670 is connected to the secondary side of the ASS 610 and the fuse 630 and is connected to the primary side of the transformer unit 138 while measuring the amount of power.

According to the present invention, the ASS, MOF, transformer unit, etc. built into the mechanical box case and the transformer case are each exposed to insulating oil, so that there is no need to provide separate insulating oil and a case for filling the insulating oil.

In addition, the transformer case 130 and the mechanical box case 150 are separately installed so that there is no need to expose the entire heavy weight during maintenance, thereby preventing safety accidents.

At this time, the transformer case and the mechanical box case are each configured in a separate configuration, so that new parts can be easily applied and used.

In addition, when the transformer case and the mechanical box case are formed in an integrated configuration, each of the chambers 500 is provided as a plurality of chambers 500 through a plurality of diaphragms 513 provided inside the outer casing 511. ASS, MOF, fuse, lightning arrester, transformer unit, etc., which are connected through the bushing 200 and installed to be insulated inside, can be easily electrically connected.

In addition, when the transformer case and the mechanical box case have a separate configuration, they may be connected to each other through a separate cable 300 by having a configuration that is spaced apart.

In addition, when the mechanical box case is also divided into a plurality, it may be composed of an integrated structure provided with a plurality of chambers through the above-described diaphragm or a separate structure that is separately installed and closely connected, and the mechanical box case is each provided through a bushing. Connected.

Continuing to describe the configuration in which the mechanical box case 150 is divided and installed, first, the ASS (failure section switch) 610 is provided with a first case 151, a fuse 630, and a lightning arrester 650. The MOF (instrument transformer) 670 may be separately installed to form another second insulating space 153.

And, as another embodiment, the mechanical box case 150, the ASS is one first insulating space 155, one third insulating space 157 with different fuse and arrester, and another fourth MOF Each may be separately installed to form the insulation space 159.

At this time, at least one selected from the first to fourth insulating spaces of the mechanical box case is connected through the bushing 200 as described above, and the ASS, fuse, arrester, and MOF installed inside the case Each is insulated from the inside and is electrically connected.

In addition, the ASS (failure section switch) 610, fuse 630, and lightning arrester 650, MOF (instrument transformer) 670, OLBS (ground load switch) 300 is a separate insulation space or It is separately installed inside one insulating space and is electrically connected through a cable or bushing, and its connection state and combination can be changed in various ways.

In addition, the mechanical box case 150 is provided with an opening 152 for accommodating ASS, MOF, etc. on one side so that it can be easily installed from the outside when the opening is opened, and an injection port and a drain hole are respectively provided in the mechanical box case. It is formed to facilitate the injection and discharge of the insulating oil.

In addition, the opening portion 152 is provided with a support jaw 158 that is recessed inward, so that the cover 700 is coupled through the packing material 710 to prevent leakage of insulating oil, as well as the same plane from the outside of the case. Can be formed.

In addition, a through hole (h) for bushing coupling is formed in the mechanical box case and the mechanical box case/mechanical box case and the transformer case, so that the bushing 200 made of female and male bushings through which terminals having screws at both ends pass through is easy. Are combined.

In this case, a ring 240 having a U-shaped cross-section is interposed in the through hole to be closely coupled to the bushing to prevent leakage of insulating oil from separately installed casing coupling portions.

In addition, the mechanical box case and the transformer case are provided with a flange 800 on one side thereof to enable a solid combination of a case that is divided and installed in a configuration in which the pieces 810 are integrally coupled.

Subsequently, when the bushing 200 is mounted, a product that prevents leakage through the bushing may be used, and when a general bushing is used, it is installed so that it is positioned above the water level of the insulating oil to prevent leakage through it.

In addition, the bushing 200 is a combination structure of the upper bushing 211 and the lower bushing 213 made of a set, and a plurality of rings 240 are inserted into the coupling portion, and the terminal 219 passes through the upper and lower bushings. ) Is inserted so that power can be supplied when the ends of the ASS or MOF are connected to both ends of the terminal.

On the other hand, as shown in Figure 12, any one selected from the ASS / fuse and arrester / MOF has an oil immersed load break switch (OLBS) 300 connected or separated by the opening and closing operation of the handle. When the handle is further connected and the handle is operated, the OLBS is grounded to the ASS, and the residual current is discharged through the discharge bushing 310 connected to the OLBS 300.

That is, when the ASS opens and closes the OLBS 300, it is connected to a ground terminal (not shown) grounded to the ground through the discharge bushing 310 to discharge the residual current in the ASS/fuse and arrester/MOF.

100...water distribution facilities 110...mainframe
610...ASS 630...fuse
670...MOF 700...cover
800...flange

Claims (7)

The transformer case is installed so that the transformer unit is insulated while the insulating oil is charged inside the main frame, and the mechanical box case is installed separately and installed in a plurality of units while the insulating oil is filled.
The transformer case and the mechanical box case are installed to supply power through a bushing or cable,
The mechanical box case is a configuration in which the ASS and / fuse and arrester and / MOF are sequentially connected
The ASS / fuse and arrester / MOF
a). Built in two or more insulating spaces that are electrically separated from each other,
b). Each built-in in two or more insulation spaces, or
c). When one or two or more selected from ASS, fuse, arrester, and/or MOF are built-in inside one insulation space
One or two or more of ASS, fuse and arrester, and/or MOF that are not selected are built-in inside the other insulating space,
The insulating spaces of the mechanical box case are installed to be electrically connected while being insulated through a bushing or cable, respectively,
An OLBS connected or separated by the opening/closing operation of the handle is further connected to any one selected from among the ASS/fuse and arrester/MOF,
The OLBS is an integrated extra-high voltage water distribution facility that is installed to discharge by being connected to a ground terminal on the ground through a discharge bushing when connected to any one selected from ASS, fuse, arrester, and MOF. The method of claim 1, wherein the insulation space comprises one first insulation space in which an ASS is built/another third insulation space in which a fuse and a lightning arrester are simultaneously built/another fourth insulation space in which an MOF is built-in. Configuration that is separately installed to achieve,
A configuration that is separately installed to form one first insulating space in which the ASS is embedded/the other second insulating space in which the fuse and arrester and the MOF are simultaneously embedded,
An integrated extra-high voltage water distribution, characterized in that it consists of any one selected from the configurations that are separately installed to form one 6th insulation space in which the ASS, fuse and arrester are simultaneously built/and another 4th insulation space in which MOF is built-in. equipment. delete The integrated extra-high voltage power distribution facility according to claim 1, wherein the OLBS is installed in a fifth insulating space filled with insulating oil and the discharge bushing is exposed to the outside of the fifth insulating space. The method of claim 1, wherein the mechanical box case is provided with an opening for receiving ASS and MOF on one side, and a drain hole is provided on a lower one side so that an injection hole is drained at an upper side so that insulating oil can be injected,
The opening portion is provided with a support jaw that is recessed inward, and the cover is coupled through a packing material. The method of claim 1, wherein the mechanical box case and the transformer case are divided to have a plurality of insulation spaces in which the ASS, the fuse, the arrester, the MOF, and the transformer unit are built through a plurality of partition plates provided inside the outer casing,
An integrated extra-high voltage power distribution facility, characterized in that a through hole for bushing coupling is formed in the diaphragm, and a bushing made of a female and a male bushing supported in a state through which terminals having screws at both ends are penetrated. The method of claim 1, wherein the power distribution facility comprises a configuration in which a mechanical box case is separately installed into each of the first insulating space to the fifth insulating space, and the mechanical box case and the transformer case are also separately installed. ,
A flange is provided on one side of the mechanical box case that is connected to each other, the mechanical box case and the transformer case that are connected to each other to be integrally combined with each other
A through hole for coupling a bushing is formed in the mechanical box case and the transformer case, and a terminal having a screw at both ends is passed through, and a bushing made of a female and a male bushing is coupled,
In the through hole, a ring having a shape in a cross section is interposed to be in close contact with the bushing,
One end of the bushing exposed to the outside of the case, an integrated extra-high voltage water distribution facility, characterized in that the installation is installed to be located above the water level of the insulating oil to be filled in the case.

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