KR102523802B1 - Power substation system having insulated terminal - Google Patents

Abstract

A power substation facility having a sealed connection according to the present invention is connected to an automatic switch for failure section connected to a high-voltage cable, an instrument transformer connected to the automatic switch for failure section 100, and a connection cable to the instrument transformer for low voltage It includes a transformer for supplying power and a consumer cable connected to the transformer to supply low-voltage power.
In the substation facility having a sealed connection according to the present invention, the cable is fastened using a female connector and a male connector, thereby enabling faster installation of the substation facility, insertion of foreign substances generated during installation, and accurate fastening. .

Description

Substation facility with sealed connection {POWER SUBSTATION SYSTEM HAVING INSULATED TERMINAL}

The present invention relates to a power substation facility having a sealed connection unit, and more particularly, to a power substation facility with a sealed connection unit capable of blocking intrusion of foreign matter and poor fastening that cause fire.

In order to supply power to customers requiring a plurality of powers, such as schools, buildings, apartment complexes, factories, etc., power conversion equipment is provided that receives high-voltage power from a power company and transforms it to a low voltage such as 220V.

These power substation facilities consist of an automatic switchgear for faulty sections that supplies high-voltage electricity, an instrument transformer, and a transformer, and has a structure in which the transformer converts to low voltage and supplies it to consumers.

When the accidents of these power substation facilities are analyzed by cause, they appear in the order of poor connection, intrusion of foreign matter, damage to insulation, leakage and leakage of oil, temperature rise due to overcurrent and other causes, noise and vibration, voltage fluctuation, and corrosion. .

Most of these causes appear to be poor connection and intrusion of foreign objects. These causes can be solved through more time and effort when installing and managing substation facilities, but due to the nature of the connection part not being exposed to the outside, it cannot be seen with the naked eye. There was a problem that could not be confirmed.

In addition, the intrusion of foreign matter did not penetrate the connection part at the time of installation, but it was often invaded by the surrounding environment during the use process, and it was difficult to grasp the size of the foreign matter with the naked eye, so there was a problem that it was impossible to cope with.

Korean Registered Patent No. 10-0842413 (published on June 24, 2008)

Substation facilities having sealed connections according to the present invention are intended to provide substation facilities equipped with sealed connections that can reduce installer fastening failures and prevent intrusion of foreign substances during use.

In addition, the substation facility having a sealed connection according to the present invention is to provide a substation facility having a sealed connection that can reduce the probability of foreign matter being inserted during the installation process by making the installation of the substation facility faster do.

In addition, a power substation facility having a sealed connection part according to the present invention is intended to be able to provide a power substation facility having a sealed connection part capable of preventing damage to a cable connected to the connection part from being damaged by vibration or the like during use.

A power substation facility having a sealed connection according to the present invention is connected to an automatic switch for failure section connected to a high-voltage cable, an instrument transformer connected to the automatic switch for failure section 100, and a connection cable to the instrument transformer for low voltage It includes a transformer for supplying power and a consumer cable connected to the transformer to supply low-voltage power.

A line-shaped connection material in which a current-limiting fuse is accommodated is disposed between the automatic switch of the fault section of the substation facility having a sealed connection according to the present invention and the instrument transformer, and one end of the line-type connection material is electrically connected to the current-limiting fuse at one end A hollow female terminal housing having connection protrusions and a female terminal having an elastic body disposed through the hollow female terminal housing are disposed, and a connection groove electrically connected to the other end of the current-limiting fuse is formed at the other end of the straight connector. A male terminal is arranged, and a female terminal with a connecting protrusion formed inside is arranged in the automatic switchgear for the faulty section, and a female terminal disposed at one end of the straight connector and a connection groove interconnected at one end and the other end of the female terminal of the automatic switchgear for the faulty section. A 'U'-shaped connection material with a formed male terminal is combined, and a female terminal with connection protrusions inside is arranged in the instrument transformer to be combined with a male terminal disposed on the other end of the straight connection material, and the connection protrusion is inserted into the connection groove. do.

A pair of slits are formed spaced apart from each other through the inner surface of the hollow female terminal housing on the outer surface of the other side of the hollow female terminal housing of the female terminal of the substation facility having a sealed connection according to the present invention, and the elastic body is inserted into the slit.

According to the present invention, the male terminal of a power substation facility having a sealed connection unit includes a male terminal housing formed in a cylindrical shape to be inserted into the inner surface of the female terminal housing, and formed on the outer surface of the male terminal housing so that the male terminal housing is formed on the inner surface of the female terminal housing. It consists of an inclined portion that deforms the elastic body outward when inserted, and a seating groove formed in the inclined portion to seat the elastic body.

A sealing groove formed in a ring shape is formed on the inner surface of the female terminal housing of the power substation facility having a sealed connection according to the present invention, a sealing member is disposed in the sealing groove, and the sealing member is inserted into the male terminal housing. When the cutout is formed in a direction opposite to the direction and the male terminal housing is inserted into the female terminal housing, the sealing member is preferably deformed in contact with the outer surface of the male terminal housing.

In the case where the elastic body of a power substation facility having a sealed connector according to the present invention is formed in an 'n' shape, and an end portion of the elastic body is formed with a bent portion bent so as not to be inserted into the slit, the center of the elastic body is moved upward. , the bend is spread along the outer surface of the female terminal housing.

Positioning protrusions are protruded on the outer surface of the male terminal housing of the power substation facility having a sealed connection according to the present invention, and a positioning groove is formed at a position corresponding to the positioning protrusion on the inner surface of the female terminal housing, so that the male terminal When the housing is inserted into the female terminal housing, the insertion position of the male terminal housing is limited.

The transformer of the substation facility having a sealed connection according to the present invention is installed on the lower frame, the automatic switchgear for the faulty section and the transformer for instrumentation are installed on the upper frame, and the automatic switchgear for the faulty section and the transformer for instrumentation are installed on the lower frame. It is fixed on the frame, and a cable holder for fixing the high voltage cable and the connection cable is disposed on one side of the lower frame.

A sliding rail having a sliding groove formed on one surface is disposed on the lower frame of a power substation facility having a sealed connection according to the present invention, a holder base to which a cable holder is coupled is disposed on one surface of the sliding rail, and a sliding rail is disposed inside the sliding rail. A pressure plate is disposed on the inner surface of one surface on which the groove is formed, an extension block is formed to extend to the inner surface of the holder base on the pressure plate, a spring is disposed on one surface of the extension block to come into contact with the inner surface of the holder base, and between the holder base and the extension block A fixture for adjusting the position of the extension block is disposed.

In the substation facility having a sealed connection according to the present invention, the cable is fastened using a female connector and a male connector, thereby enabling faster installation of the substation facility, insertion of foreign substances generated during installation, and accurate fastening. .

In addition, when the female connector and the male connector are fastened, an elastic body that operates according to the position of the male connector is used to mutually fasten, so that accurate fastening can be achieved.

In addition, by disposing a sealing member that is deformed when the male connector is inserted inside the female connector, foreign substances are prevented from being inserted between the female connector and the male connector during use after installation, thereby reducing the occurrence of breakdowns, fires, and the like.

In addition, by moving the cable holder for fixing the cable according to the location of the cable to be combined with the cable, there is an effect of more easily installing and maintaining the substation facility.

1 is a perspective view of a power substation facility having a sealed connection unit according to an embodiment of the present invention.
2 is an exploded perspective view of main parts of a power substation facility having a sealed connection part.
FIG. 3 is a conceptual diagram illustrating a method of coupling the automatic switchgear for the faulty section shown in FIG. 2, the instrument transformer, and the straight loader.
4 is a perspective view of main parts of the female terminal and the male terminal shown in FIG. 2;
5 and 6 are cross-sectional views showing coupling operation of the female terminal and the male terminal shown in FIG. 4 .
7 and 8 are cross-sectional views showing exploded operation views of the female and male terminals shown in FIG. 4 .
9 is a perspective view illustrating upper and lower frames of a substation facility having a sealed connection unit according to another embodiment of the present invention.
10 is a perspective view and a cross-sectional view showing main parts of the sliding rail and the cable holder shown in FIG. 9;

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only, and may be modified and implemented in various forms. Therefore, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various components, such terms should only be construed for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or numbers, It should be understood that the presence or addition of steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this specification, it should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, with reference to the drawings, a substation facility having a sealed connector according to the present invention will be described in detail.

Referring to FIG. 1, which is a perspective view of a substation facility having a sealed connection (hereinafter referred to as 'substation facility') according to an embodiment of the present invention, and FIG. 2, which is an exploded perspective view of main parts of the substation facility, the substation facility The fault section automatic switch 100 connected to the high voltage cable 10, the instrument transformer 200 connected to the fault section automatic switch 100, and the instrument transformer 200 and the connection cable 30 are connected. It consists of a transformer 300 that supplies low voltage power.

Here, the fault section automatic switch 100, instrument transformer 200, and transformer 300 are used in a general substation facility, and detailed descriptions thereof will be omitted.

The transformer 300 is connected with a consumer cable 20 that supplies low-voltage power converted by the transformer 300, and a current-limiting fuse 411 is provided between the automatic switch 100 and the instrument transformer 200 in the fault section. The straight connector 410 in which is accommodated is disposed.

As shown in FIG. 2 , a female terminal 420 is disposed at one end of the straight connecting member 410 , and a male terminal 440 is disposed at the other end of the straight connecting member 410 .

The female terminal 420 and the male terminal 440 have connecting protrusions 421 inside as shown in FIG. 3, which is a conceptual diagram showing a method of coupling the automatic switchgear for the faulty section, the instrument transformer, and the straight connector shown in FIG. 2. And a connection groove 441 is formed.

The connecting protrusion 421 inside the female terminal 420 is electrically connected to the current-limiting fuse 411 inside the straight connecting member 410 and disposed inside the hollow female terminal housing 422 . An elastic body 424 disposed through the female terminal housing 422 is disposed in the female terminal 420 .

The elastic body 424 has a locking function to prevent the male terminal 440 from being separated from the inside of the female terminal 420 when the male terminal 440 is inserted into the female terminal 420, which will be described later. .

At this time, as shown in FIG. 3, a female terminal 420 having a connection protrusion 421 formed therein is disposed in the automatic switch 100 in the failure section, and the female terminal 420 disposed at one end of the straight connector 410 and , A 'c'-shaped connector 450 having male terminals 440 having interconnected connection grooves 441 formed at one end and the other end connected to the female terminal 420 of the automatic switchgear 100 in the fault section is coupled.

Therefore, the male terminal 440 at both ends of the 'c'-shaped connecting material 450, the female terminal 420 of the straight connecting material 410, and the female terminal 420 of the automatic switch 100 in the faulty section are combined, respectively, to form a straight connecting material ( 410) and the fault section automatic switch 100 are electrically connected to each other.

In addition, as shown in FIG. 3, a female terminal 420 having a connecting protrusion 421 is disposed on the instrument transformer 200 and coupled with a male terminal 440 disposed at the other end of the straight connecting member 410 to form a straight The fault section automatic switch 100 and the instrument transformer 200 are electrically connected via the connecting material 410 as a medium.

In addition to this, referring to FIG. 2, a male terminal 440 is disposed at a terminal to which the high-voltage cable 10 of the automatic break section 100 is fastened, and a female terminal 420 is disposed at the high-voltage cable 10 to mutually fasten. It is possible to connect electrically by enabling the connection, and the male terminal 440 may be disposed on the transformer 300 to connect the cable 20 having the female terminal 420. In addition, a male terminal 440 electrically connected to the transformer 300 is formed in the instrument transformer 200, and a male terminal 440 connected to the instrument transformer 200 is formed in the transformer 300 to form both ends. The instrument transformer 200 and the transformer 300 may be electrically connected using the connection cable 30 having the female terminal 420 formed therein.

Referring to FIG. 4, which is a perspective view of the female terminal and the male terminal shown in FIG. 2, and FIG. 5, which is a cross-sectional view showing a coupling operation diagram of the female terminal and the male terminal, the hollow female terminal housing 422 of the female terminal 420 A pair of slits 426 are spaced apart from each other through the inner surface of the hollow female terminal housing 422 on the outer surface of the other side, and the elastic body 424 can be configured to be inserted into the slit 426.

At this time, the male terminal 440 is formed on the outer surface of the male terminal housing 442 formed in a cylindrical shape to be inserted into the inner surface of the female terminal housing 422 and the male terminal housing 442, so that the male terminal housing 442 is a female terminal It consists of an inclined portion 444 that deforms the elastic body 424 outward when inserted into the inner surface of the housing 422 and a seating groove 446 formed on the inclined portion 444 to seat the elastic body 424 therein.

That is, as shown in FIGS. 5 and 6, when the male terminal housing 442 is inserted into the female terminal housing 422, the elastic body 424 installed in the female terminal housing 422 comes into contact with the inclined portion 444. When the female terminal housing 422 is deformed to the outside and the male terminal housing 442 is continuously inserted so that the elastic body 424 is positioned in the seating groove 446 formed in the inclined portion 444, the elastic body 424 It is restored and inserted between the seating grooves 446 so that the female terminal 420 and the male terminal 440 are firmly fastened.

Therefore, foreign matter from the outside is blocked by the inclined portion and does not flow into the terminal.

In addition, a sealing groove 427 formed in a ring shape in an outward direction is formed on the inner surface of the female terminal housing 422, and a sealing member 428 is disposed in the sealing groove 427. As shown in the enlarged view of FIG. 6, the sealing member 428 has a cutout 428a formed in a direction opposite to the direction in which the male terminal housing 442 is inserted, so that the male terminal housing 442 is inserted into the female terminal housing. When inserted into the 422, the cutout 428a of the sealing member 428 comes into contact with the outer surface of the male terminal housing 442 and is deformed. Therefore, the female connector 420 and the male connector 440 are coupled in a pressurized state by the sealing member 426 to more effectively prevent external foreign substances from entering the connector, and the sealing member 426 is the male connector 440 is pressed toward the elastic body 424 so that the female connector 420 and the male connector 440 can be more firmly coupled.

Referring to FIG. 4, which is a perspective view of main parts of the female terminal and the male terminal, and FIGS. 7 and 8, which are cross-sectional views showing exploded operation views of the female terminal and the male terminal, the elastic body 424 is formed in an 'n' shape, and the elastic body 424 is formed in an 'n' shape. At the end of 424, a bent portion 424a bent so as not to be inserted into the slit 426 is formed, and when the center of the elastic body 424 is moved upward, the bent portion 424a forms the female terminal housing 422. ) It can be configured so that the outer surface of the elastic body 424 can be configured to be movable.

Therefore, when the center of the elastic body 424 is moved upward as shown in FIG. 8, the elastic body 424 inserted into the seating groove 446 of the male terminal housing 442 is separated from the seating groove 446, and the arm The male terminal 440 inserted into the terminal 420 can be more easily separated.

In addition, a positioning protrusion 449 is protruded from the outer surface of the male terminal housing 442, and a positioning groove 429 is formed on the inner surface of the female terminal housing 422 at a position corresponding to the positioning protrusion 449. When the male terminal housing 442 is inserted into the female terminal housing 422, the insertion position of the male terminal housing 442 is limited, and the male terminal 440 does not rotate mutually while being inserted into the female terminal 420. Avoid.

This substation facility can be installed in FIG. 9, which is a perspective view showing upper and lower frames. In this case, the transformer 300 is installed on the lower frame 510, the automatic switchgear 100 in the fault section, and the instrument transformer 200 ) is installed on the upper frame 550, and the upper frame 550 in which the faulty section automatic switch 100 and the instrument transformer 200 are installed is fixed on the lower frame 510 to provide installation space for substation facilities. can be minimized.

At this time, when cables such as the high-voltage cable 10 and the connection cable 30 vibrate due to external contact or vibration at the installation site, a connection failure of the cable may occur.

Accordingly, a cable holder 540 for fixing the high voltage cable 10 and the connection cable 30 is disposed on one side of the lower frame 510 .

The cable holder 540 may be separately fixed to the lower frame 510 according to the position of the cable, but in this case, it takes a lot of time to install the substation equipment. Therefore, as shown in FIG. 10, a sliding rail 520 having a sliding groove 520a formed on one surface is disposed on the lower frame 510, and a holder base to which a cable holder 540 is coupled to one surface of the sliding rail 520. 530 is arranged to fix the cable by changing the position of the cable holder 540 according to the position of the cable.

At this time, a pressure plate 532 is placed on the inner surface of one surface where the sliding groove 520a is formed inside the sliding rail 520 so that the holder base 530 can be moved and fixed according to the position of the cable, and the pressure plate ( 532, an extension block 534 is formed extending to the inner surface of the holder base 530, and a spring 536 in contact with the inner surface of the holder base 530 may be disposed on one surface of the extension block 534, and the holder base A fixture 538 for adjusting the position of the extension block 534 may be disposed between the extension block 530 and the extension block 534 .

As described above, although the embodiments have been described with limited drawings, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved.

10: high voltage cable 20: consumer cable
30: connection cable 100: automatic relay in fault section
200: instrument transformer 300: transformer
410: straight connector 411: current-limiting fuse
420: female terminal 421: connection protrusion
422: female terminal housing 424: elastic body
424a: bent portion 426: slit
427: sealing groove 428: sealing member
428a: incision 429: positioning groove
440: male terminal 441: connection home
442: male terminal housing 444: inclined part
446: seating groove 449: position setting protrusion
450: c'-shaped connector 510: lower frame
520: sliding rail 520a: sliding groove
530: holder base 532: pressure plate
534: extension block 536: spring
538: fixture 540: cable holder
550: upper frame

Claims (7)

An automatic switch 100 for a failure section connected to the high-voltage cable 10;
an instrument transformer 200 connected to the fault section automatic switch 100;
A transformer 300 connected to the instrument transformer 200 through a connection cable 30 to supply low voltage power;
It includes a consumer cable 20 connected to the transformer 300 to supply low voltage power,
A straight connector 410 in which a current-limiting fuse 411 is accommodated is disposed between the automatic switch 100 and the instrument transformer 200,
A hollow female terminal housing 422 having a connecting protrusion 421 electrically connected to the current limiting fuse 411 at one end of the straight connector 410 is formed therein, and the hollow female terminal housing 422 ) A female terminal 420 is disposed with an elastic body 424 disposed through,
A male terminal 440 having a connection groove 441 electrically connected to the other end of the current-limiting fuse 411 is disposed at the other end of the straight connector 410,
A female terminal 420 having a connecting protrusion 421 formed therein is disposed in the automatic switch 100 in the faulty section,
A female terminal 420 disposed at one end of the straight connector 410 and a male terminal 440 having connection grooves 441 interconnected at one end and the other end of the female terminal 420 of the automatic switch 100 for the faulty section. The arranged 'c'-shaped connecting member 450 is coupled,
In the instrument transformer 200, a female terminal 420 having a connection protrusion 421 formed therein is disposed and coupled with a male terminal 440 disposed at the other end of the straight connector 410, and the connection protrusion 421 ) is inserted into the connection groove 441,
A pair of slits 426 are spaced apart from each other on the outer surface of the other side of the hollow female terminal housing 422 of the female terminal 420, penetrating the inner surface of the hollow female terminal housing 422, and the elastic body 424 It is inserted into the slit 426,
The male terminal 440 is
A male terminal housing 442 formed in a cylindrical shape to be inserted into the inner surface of the female terminal housing 422, and formed on the outer surface of the male terminal housing 442, the male terminal housing 442 is formed on the female terminal housing 422 ) It consists of an inclined portion 444 that deforms the elastic body 424 outward when inserted into the inner surface, and a seating groove 446 formed on the inclined portion 444 to seat the elastic body 424,
A sealing groove formed in a ring shape is formed on the inner surface of the female terminal housing 422 in an outward direction,
A sealing member 428 is disposed in the sealing groove 427,
The sealing member 428 has a cutout 428a formed in a direction opposite to the direction in which the male terminal housing 442 is inserted,
When the male terminal housing 442 is inserted into the female terminal housing 422, the sealing member 428 comes into contact with the outer surface of the male terminal housing 442 and is deformed.
The elastic body 424 is formed in an 'n' shape,
The end of the elastic body 424 is formed with a bent portion 424a bent so as not to be inserted into the slit 426, and when the center of the elastic body 424 moves upward, the bent portion 424a Substation equipment having a sealed connection part, characterized in that it spreads along the outer surface of the female terminal housing (422).
delete delete delete According to claim 1,
A positioning protrusion 449 is protruded from the outer surface of the male terminal housing 442,
A positioning groove 429 is formed on the inner surface of the female terminal housing 422 at a position corresponding to the positioning protrusion 449,
A power substation facility having a sealed connection, characterized in that the insertion position of the male terminal housing (442) is limited when the male terminal housing (442) is inserted into the female terminal housing (422).
According to claim 1,
The transformer 300 is installed on the lower frame 510,
The fault section automatic switch 100 and instrument transformer 200 are installed on the upper frame 550,
The upper frame 550 in which the automatic switch 100 and the instrument transformer 200 are installed is fixed on the lower frame 510,
A power substation facility with a sealed connection, characterized in that a cable holder 540 for fixing the high voltage cable 10 and the connection cable 30 is disposed on one side of the lower frame 510.
According to claim 6,
A sliding rail 520 having a sliding groove 520a formed on one surface of the lower frame 510 is disposed,
A holder base 530 to which the cable holder 540 is coupled is disposed on one surface of the sliding rail 520,
Inside the sliding rail 520, a pressure plate 532 is disposed on an inner surface of one surface on which the sliding groove 520a is formed,
An extension block 534 is formed extending from the pressing plate 532 to the inner surface of the holder base 530,
A spring 536 in contact with the inner surface of the holder base 530 is disposed on one surface of the extension block 534,
Substation equipment with a closed connection, characterized in that a fixture 538 for adjusting the position of the extension block 534 is disposed between the holder base 530 and the extension block 534.

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