KR101550852B1 - Connection apparatus of underground transmission line for withstanding voltage test - Google Patents

Abstract

Disclosed is a line connection apparatus for a withstand voltage test. The disclosed line connection apparatus for a withstand voltage test includes: a transmission line connection device which is installed in a GIS chamber to be connected to a ground transmission line through the GIS chamber; and a cable carrier which is separated from the transmission line connection device, and is connected to the transmission line connection device through an insulation cable to connect a withstand voltage tester to the transmission line connection device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line connecting apparatus for a voltage withstanding voltage test,

More particularly, the present invention relates to a line connection apparatus for an electric voltage test, which can reduce the difficulty in installation due to a place or space, and allow a test to be carried out with an underground line while ensuring stability.

Generally, in Korea, electric power generated by hydropower, thermal power, and nuclear power has a voltage of about 1 to 50,000 volts and is boosted to 134,000 or 345,000 volts at a high voltage substation and then sent to a low voltage substation . In a low-voltage substation, this electricity is reduced to 22,000 to 66,000 volts and transmitted to a nearby transformer. The electricity transmitted from the nearby transformer is reduced to 220 volts and supplied to the customer.

On the route to supply electricity to the customers in the power plant, there exists a line segment connecting through a pylon and an underground line segment connected to the underground line. Recently, when designing a new city through urban development, most of them are adopting the underground line method, and also replacing the existing line of the service line with the underground line method for the beauty of the city.

An underground buried transmission line is installed inside an underground channel embedded in the ground, connected to a wire connection block provided inside the underground channel, and connected or branched to each building or house to supply electricity. Transmission lines use wires capable of transmitting a sufficient amount of electricity.

In this way, the underground buried transmission line is tested by AC withstand voltage test before completion to assure safety in use. Normal underground transmission line AC withstand voltage test is carried out using the AC withstand voltage tester carrier vehicle, and the GIS chamber of the underground transmission line and the tester carrier vehicle are connected using a divider and a wire.

However, in the conventional AC withstand voltage test, when the GIS chamber is installed indoors, the space is narrow and insulation of the electric wire is difficult, and it is difficult to install a test bushing for connecting the GIS chamber and the electric wire .

Therefore, there is a need to improve this.

Korean Registered Patent No. 10-0496994 (Registered Date: June 14, 2005, Name: Real-time evaluation device of underground power cable and its method) Korean Registered Patent No. 10-1183587 (Registered Date: September 11, 2012, Name: Supervision underground transmission line supervision system and method)

It is an object of the present invention to provide a line connection equipment for an electric strength test that can reduce the installation difficulty according to a place or a space and can conduct a test of a transmission line while ensuring stability.

In order to achieve the above object, according to one aspect of the present invention, there is provided a line connection equipment for voltage withstanding test, comprising: a transmission line connection device installed in the GIS chamber to be connected to an underground transmission line through a GIS chamber; And a cable bogie installed to be spaced apart from the transmission line connection device and connected to the transmission line connection device through an insulation cable so as to connect the withstand voltage tester and the transmission line connection device.

In addition, the line withstanding voltage test equipment may further include a plug unit provided in the transmission line connecting device and the cable car to connect the insulation cable.

Also, the transmission line connecting apparatus may include a main body to which the plug unit is installed, the main body being detachably attached to the GIS chamber; And a connecting portion located inside the GIS chamber to connect the plug unit and the three-phase bushing of the GIS chamber.

The transmission line connection device may further include a cable fixture coupled to the main body, fixing the plug unit to the main body, and fixing the insulation cable connected to the plug unit.

In addition, the transmission line connection device may further include a cable guide portion for guiding the insulation cable to the cable car side.

The main body may further include: a connection chamber in which the plug unit is installed; And a flange portion having a first fastening portion and a second fastening portion to be respectively coupled to the GIS chamber and the connection chamber, and fixing the connection chamber to the GIS chamber.

The connecting portion may include: a connection rod connected to the plug unit; And a rod fixture movably fixed to the connection rod to adjust the length of the connection rod and supported by the three-phase bushing.

Further, the rod fixing base may include: a support member coupled with the three-phase bushing; A fixing member coupled to the support member such that the engagement position of the support member is adjustable; And a connection member which is coupled with the fixing member to adjust the length of the connection rod.

The cable fixture may further include: a base block coupled to the main body to prevent the plug unit from flowing; A long bolt member provided on the base block; And a cable holder coupled to the long bolt member and fixing the insulation cable.

Further, the cable guide portion is characterized by reducing a load applied to a connecting portion of the insulating cable connected to the plug unit.

In addition, the cable guide portion may include a fixed block coupled to the main body; And a fixing member joined to the fixing block so that the insulating cable is mounted.

The length of the insulation cable is adjusted according to a distance between the cable bogie and the transmission line connection device.

The cable bogie includes: a base portion; A cable winding portion rotatably installed on the base portion and wound with the insulation cable; And a driving unit provided on the base unit to rotate the cable winding unit.

The cable bogie further includes an external connection terminal unit provided in the cable winding unit for connecting the insulation cable wound to the cable winding unit and connecting the insulation cable and the electric strength tester.

The external connection terminal unit is rotatably installed in the cable winding unit.

The cable winding portion may include: a winding drum connected to the driving portion and wound with the cable; And a roller member provided on the base and supporting the winding drum rotated by the driving unit.

The cable winding unit may further include a cable seating bracket provided on an outer surface of the winding drum so that the cable wound on the winding drum is seated and supported.

The driving unit may further include: a coupling disk coupled to the cable winding unit; A decelerator provided on the base to be coupled to the connection disc; And a driving motor provided on the base unit to be connected to the speed reducer through a power transmitting member.

The external connection terminal unit may include: a terminal support rotatably installed on the cable winding unit; And an insulating terminal member to which the insulating cable is connected at one end and is coupled to the terminal support to connect a lead wire connected to the withstand voltage tester at the other end.

The external connection terminal unit may further include a buffer support member provided at the cable winding unit to be fixed to the terminal support or the insulation terminal member to buffer rotation of the terminal support.

The external connection terminal unit may further include a cable guide plate for guiding the insulation cable to the inside of the cable winding unit while reducing a load acting on a connection site of the insulation cable connected to the insulation terminal member .

Further, the plug unit may include: a socket portion coupled to the transmission line connecting device and the cable car, respectively, the socket portion being formed by an insulator; A conductive sleeve provided inside the socket portion to be connected to the insulation cable; A stress cone provided between the socket portion and the conductor sleeve; And a cone compression unit for closely contacting the stress cone with the conductor sleeve so that the conductor sleeve is fixed by the stress cone.

Further, the cone compression unit may include: a contact member that contacts the stress cone; A cover member coupled to the socket portion to prevent the urging member from coming off; And an elastic supporting member provided between the contact member and the cover member to elastically support the contact member to the stress cone.

The plug unit may further include a cable coupling portion for coupling the conductor sleeve and the insulation cable with each other.

The cable connecting portion may include a connecting plate coupled to the conductor sleeve and the lead wire; And a coupling band for fixing the connection plate to the conductor sleeve and the lead wire.

As described above, the line connection equipment for withstanding voltage test according to the present invention can easily install an insulation cable while securing stability in a closed space with a narrow space, unlike the conventional invention, so that the underground transmission line can be easily tested There is an effect.

1 is a side view showing a line connection equipment for an electric strength test according to an embodiment of the present invention.
2 is a cross-sectional view illustrating a transmission line connection apparatus according to an embodiment of the present invention.
3 is a perspective view illustrating a main body according to an embodiment of the present invention.
4 is an exploded perspective view showing a connecting part according to an embodiment of the present invention.
5 is a side view showing a connecting portion according to an embodiment of the present invention.
6 is an exploded perspective view illustrating a rod length adjusting member according to an embodiment of the present invention.
7 is a cross-sectional view illustrating a cable fixture according to an embodiment of the present invention.
8 is a perspective view illustrating a cable guide according to an embodiment of the present invention.
Fig. 9 is a plan view of Fig. 8. Fig.
10 is a perspective view showing a cable car according to an embodiment of the present invention.
11 is a side view of Fig.
12 is a plan view of Fig.
FIG. 13 is an enlarged view showing an external connection terminal unit according to an embodiment of the present invention.
14 is a view illustrating a state in which the external connection terminal unit is rotated according to an embodiment of the present invention.
15 is a cross-sectional view illustrating a plug unit according to an embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a line connection equipment for withstand voltage test according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a side view showing a line connection equipment for an electric strength test according to an embodiment of the present invention.

As shown in FIG. 1, the line connection equipment for withstand voltage test according to the present embodiment includes an underground transmission line 20 and an electric strength tester 10 so as to inspect the safety of an underground transmission line 20 buried underground, Lt; / RTI > This line connection facility can easily connect the underground transmission line 20 and the withstand voltage tester 10 when the underground transmission line 20 is installed in a narrow space or indoors, do.

Specifically, the line connection equipment for withstanding voltage test according to the present embodiment includes a transmission line connection device 100 connected to an underground transmission line 20 through a GIS (Gas Insulated Switchgear) chamber 30, an insulation cable 101 And a cable car 200 connected to the transmission line connection device 100 through the cable transmission line 100. The cable bogie 200 is connected to the divider 40 via a lead wire and the divider 40 is connected to the withstand voltage tester 10. At this time, the withstand voltage tester 10 is mounted on the vehicle so that it can be easily installed and moved, and the GIS chamber 30 is connected to the underground transmission line 20.

The line connecting equipment for withstanding voltage test has a structure in which an insulation cable 101 is wound around a cable car 200 so that the length of the insulation cable 101 can be adjusted according to the distance between the withstand voltage tester 10 and the transmission line connection device 100 do.

The line connection equipment for withstanding voltage test according to the present embodiment can easily connect the insulation cable 101 to the transmission line connection device 100 and the cable car 200 and can stably maintain the connection state And further includes a plug unit 300 to be described later.

2 to 9, a transmission line connection apparatus 100 according to the present embodiment will be described in detail.

3 is a perspective view illustrating a main body according to an embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a power transmission line connecting apparatus according to an embodiment of the present invention. FIG. 5 is a side view showing a connecting portion according to an embodiment of the present invention. FIG.

FIG. 6 is an exploded perspective view illustrating a rod length adjusting member according to an embodiment of the present invention. FIG. 7 is a cross-sectional view illustrating a cable fixture according to an embodiment of the present invention. FIG. 9 is a plan view of the cable guide portion according to the embodiment. FIG.

2 to 9, a transmission line connection apparatus 100 according to the present embodiment includes a main body 110 installed with a plug unit 300 and detached from the GIS chamber 30, a plug unit 300 A cable fixing base 130 for fixing the insulation cable 101 connected to the plug unit 300 and a cable guide unit 140 for guiding the insulation cable 101 .

The main body 110 has a connection chamber 111 in which the plug unit 300 is installed and a flange portion 113 for coupling the connection chamber 111 to the GIS chamber 30. The main body 110 is provided with a cable fixing table 130 and a cable guide 140 in the connection chamber 111. The flange 113 can be manufactured in various sizes depending on the shape and size of the GIS chamber 30. [ . This is to allow the main body 110 to be easily installed in the GIS chamber 30 only by replacing the flange portion 113 without replacing the connecting chamber 111.

The connection chamber 111 has a cable fixing part 130 and a cable guide part 140 coupled to the upper surface thereof and a lower end part coupled to the flange part 113 through a bolt.

The flange portion 113 includes a first fastening portion 113a and a second fastening portion 113b to be engaged with the GIS chamber 30 and the connecting chamber 111 through bolts and a through hole is formed at the center portion thereof. The flange portion 113 is formed by a fastening hole such that the first fastening portion 113a and the second fastening portion 113b pass through the bolts. The flange portion 113 is formed such that the first fastening portions 113a are formed at equal intervals along the circumferential direction at the rim portion and the second fastening portions 113b are positioned inside the first fastening portions 113a, Direction.

2, 4 and 5, the connecting portion 120 according to the present embodiment is inserted into the GIS chamber 30 and supported by the three-phase bushing 31 of the GIS chamber 30, (31) and the plug unit (300).

The connecting portion 120 includes a connecting rod 121 and a rod fixing base 123. The connecting rod 120 is connected to the connecting rod 121 in the rod fixing base 123 in accordance with the position of the three phase bushing 31 and the plug unit 300, The length and the position of the screw are adjusted. To this end, the connecting portion 120 is connected to the plug unit 300 through the connecting rod 121, and the connecting rod 121 is movably installed on the rod fixing rod 123.

The upper end of the connecting rod 121 is connected to the plug unit 300, and the lower end of the connecting rod 121 is coupled to the rod fixing base 123.

The rod fixing table 123 is used to adjust and fix the length of the connecting rod 121 as well as to support the three-phase bushing 31 by the supporting member 125, the fixing member 127 and the rod length adjusting member 129 ). The rod fixing table 123 is supported by the rod length adjusting member 129 so that the supporting member 125 is movably installed on the fixing member 127 and is coupled to the three-phase bushing 31, Respectively.

The lower end of the support member 125 is coupled to the three-phase bushing 31, and the upper end thereof is movably coupled to the fixing member 127. After the support member 125 is moved in the fixing member 127 and its position is adjusted, the support member 125 is fixed to the fixing member 127 through the tightening of the nut.

The fixing member 127 is formed with a position adjusting hole 127a into which the fixing member 127 is inserted so that the supporting member 125 is movably coupled and the rod length adjusting member 129 is coupled to the center. Further, the fixing member 127 is formed at its center with a rod through-hole through which the connecting rod 121 passes.

The rod length adjusting member 129 is coupled to the fixing member 127 through a bolt and includes a rod engaging hole portion 129a, a relief slot 129b and a fixing bolt 129c for adjusting the length of the connecting rod 121 do. The rod-length adjusting member 129 has the connecting rod 121 inserted into the rod engaging hole 129a and the connecting rod 121 is easily moved up and down in the rod engaging hole 129a by the relief slot 129b. . At this time, the relief slot 129b communicates with the rod engagement hole portion 129a.

The fixing bolt 129c is fastened to the rod length adjusting member 129 so as to compress the relief slot 129b so that the inner surface of the rod engaging hole 129a is brought into close contact with the connecting rod 121. [ As a result, the movement of the connection rod 121 can be selectively restricted in the rod engagement hole portion 129a.

2 and 7, the cable fixing table 130 fixes the plug unit 300 to the connection chamber 111 and stably supports the insulation cable 101 connected to the plug unit 300. To this end, the cable fixture 130 includes a base block 131 coupled to the connection chamber 111, a long bolt member 133 provided in the base block 131, And a cable holder 135 coupled to the bolt member 133. The cable holder 130 moves up and down in the long bolt member 133 according to the connection position of the plug unit 300 and the insulation cable 101.

The base block 131 is coupled to the connection chamber 111 through a bolt, and simultaneously fixes the plug unit 300 to the connection chamber 111.

A plurality of long bolt members 133 are provided at equal intervals in the base block 131 so as to stably support the cable holder 135. [

The cable holder 135 is coupled to the upper end of the elongated bolt member 133 and fixes the insulated cable 101 to prevent the insulated cable 101 from being separated from the plug unit 300. The cable holder 135 is fixed to the long bolt member 133 by the nut fastened to the long bolt member 133 and the coupling position in the long bolt member 133 is adjusted.

Referring to FIGS. 2, 8 and 9, the cable guide 140 according to the present embodiment can reduce the load applied to the connecting portion of the insulating cable 101 connected to the plug unit 300, The cable 101 is guided to the cable car 200 side. The cable guide 140 includes a fixing block 141 coupled to the connecting chamber 111, a mounting member 143 connected to the fixing block 141 to receive the insulating cable 101, 101 for preventing the deformation of the fixing member 143 by the weight of the reinforcing plate 145. [

The fixing block 141 is divided into two blocks so as to be easily installed in the connecting chamber 111, and the two blocks are coupled to each other by the extension bolts.

The stationary member 143 is joined to the stationary block 141, and the upper end of the stationary block 141 is curved so that the insulated cable 101 is mounted with a gentle curvature. In addition, the mounting member 143 is formed with a mounting groove such that the insulating cable 101 is stably guided.

The reinforcing plate 145 has one end and the other end bonded to the fixing block 141 and the mounting member 143, respectively.

Meanwhile, the insulating cable 101 guided by the cable guide portion 140 is wound around the cable car 200.

A cable car 200 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1, 10 to 14.

FIG. 10 is a perspective view illustrating a cable car according to an embodiment of the present invention, FIG. 11 is a side view of FIG. 10, FIG. 12 is a plan view of FIG. 10, Fig. 2 is an enlarged view of a main part showing a terminal unit.

FIG. 14 is a view illustrating a state in which the external connection terminal unit according to the embodiment of the present invention is rotated, and FIG. 15 is a cross-sectional view illustrating a plug unit according to an embodiment of the present invention.

1, 10 to 14, a cable bogie 200 according to an embodiment of the present invention includes an insulation cable 101 wound around a transmission line 100, The length of the insulation cable 101 connected to the connection device 100 is adjusted.

The cable bundle 200 according to the present embodiment includes a base portion 210 installed on the ground and a cable winding portion 220 rotatably installed on the base portion 210 and wound around the insulation cable 101 And a driving unit 230 for rotating the cable winding unit 220 so that the length of the insulating cable 101 can be adjusted. The cable bogie 200 further includes an external connection terminal unit 240 for stably connecting the insulation cable 101 and the divider 40.

The base portion 210 is provided with a lifting ring for lifting by using heavy equipment such as a crane.

The cable winding unit 220 includes a winding drum 221 connected to the driving unit 230 and wound around the insulating cable 101 and a winding drum 221 provided in the base unit 210 and rotated by the driving unit 230, And a roller member 223 for supporting the roller 223. The cable winding unit 220 further includes a cable seating bracket 225 provided on the winding drum 221 so as to stably support the insulating cable 101 wound on the winding drum 221.

The winding drum 221 is opened at the upper end, the lower surface is sealed, and the cable seating bracket 225 is rotatably installed at the upper end. The winding drum 221 is supported by the roller member 223 so that the winding drum 221 can rotate smoothly by the driving unit 230.

The cable seating bracket 225 is provided so as to be spaced apart from the outer surface of the winding drum 221 so as to wind the insulating cable 101 wound around the winding drum 221 in a line. The cable seating bracket 225 supports the insulating cable 101 wound on the winding drum 221 to prevent the insulating cable 101 from being stacked only on the lower side of the winding drum 221 due to its own weight. The cable seating bracket 225 according to the present embodiment is formed in a "C" shape.

The driving unit 230 is installed on the base unit 210 to be connected to the winding drum 221 to rotate the winding drum 221 in the forward and reverse directions. The driving unit 230 includes a connecting disc 231 to be coupled to the winding drum 221, a speed reducer 233 coupled to the connecting disc 231, a driving motor 235 for driving the speed reducer 233, .

The connecting disc 231 is joined to the inner surface of the winding drum 221 and the center portion thereof is coupled to the rotating shaft of the speed reducer 233.

The speed reducer 233 is provided in the base 210 and is connected to the driving motor 235 through the power transmitting member 237.

The driving motor 235 is provided on the base 210 so as to be spaced apart from the speed reducer 233 and is connected to the speed reducer through the power transmitting member 237.

As the power transmitting member 237 according to the present embodiment, a chain method may be used, and a gear method or a belt method may be used according to the user's need.

Referring again to Figs. 10 to 14, the external connection terminal unit 240 is rotatably installed on the upper end of the winding drum 221, and stands up on the winding drum 221 in the withstand voltage test. The external connection terminal unit 240 includes a terminal support 241 rotatably installed on the winding drum 221 and an insulation terminal member 243 for connecting the lead wire of the divider 40 and the insulation cable 101. [ . The external connection terminal unit 240 further includes a buffer support member 125 for facilitating rotation of the terminal support 241 and a cable guide plate 247 for guiding the insulation cable 101.

The terminal support 241 is hinged to the winding drum 221, and the insulation terminal member 243 and the cable guide plate 247 are coupled and rotated together. In addition, the impact generated when the terminal support 241 rotates is absorbed by the buffer support member 125.

The insulation terminal member 243 is coupled to the terminal support 241 and rotates together with the terminal support 241 and is insulated by the polymer electrolyte and insulation gas filled in the polymer electrolyte. The insulation terminal member 243 has a plug unit 300 connected to the insulation cable 101 at one end and a lead wire of the divider 40 at the other end.

The buffer support member 125 is hinged to the terminal support 241 and the winding drum 221 at one end and the other end and connected to the external connection terminal unit 240 as the external connection terminal unit 240 rotates Absorbs shocks to absorb shock.

The cable guide plate 247 is provided on the inner side of the winding drum 221 while reducing the load acting on the connection portion between the plug unit 300 and the insulation cable 101 provided in the insulation terminal member 243, . One end of the cable guide plate 247 is joined to the terminal support 241, and the distal end of the cable guide plate 247 is curved.

The insulated terminal member 243 and the plug unit 300 provided in the connection chamber 111 are connected to the socket unit 310 so that the insulated cable 101 can be connected safely and easily, A conductor sleeve 320, a stress cone 330, a cone compression section 340, and a cable coupling section 350.

The socket portion 310 is formed by an insulator and is provided in the connection chamber 111 and the insulation terminal member 243, respectively.

The conductor sleeve 320 is provided inside the socket 310 to be connected to the insulated cable 101 and is stably fixed to the socket portion 310 by the stress cone 330 and the cone compressing portion 340. Further, the state of the conductor sleeve 320 connected to the insulating cable 101 is stably maintained through the cable connecting portion 350.

The stress cone 330 is provided inside the socket portion 310 so that the conductor sleeve 320 penetrates and is in intimate contact with the conductive sleeve 320 by the cone compressing portion 340 so that the flow of the conductive sleeve 320 .

The cone compression unit 340 is coupled to the socket unit 310 so that the conductor sleeve 320 is fixed by the stress cone 330 to closely contact the stress cone 330 with the conductive sleeve 320. The cone compression unit 340 includes a contact member 341 inserted into the socket unit 310 to be in contact with the stress cone 330 and a socket unit 310 to prevent the contact member 341 from being separated from the contact member 341. [ And a resilient support member 345 provided between the contact member 341 and the cover member 343 and elastically supporting the contact member 341 to the stress cone 330. [

The contact member 341 has an inclined surface at a portion contacting the stress cone 330 so that the stress cone 330 can be closely contacted.

The cable coupling portion 350 includes a connection plate 351 and a coupling band 353 so that the conductor sleeve 320 and the insulation cable 101 can be tightly coupled to each other. The connection plate 351 is inserted into the conductor sleeve 320 and the insulation cable 101 and tightly coupled to the conductor sleeve 320 and the insulation cable 101 through the coupling band 353. The binding band 353 is fastened to the connecting plate 351 to fix the connecting plate 351 to the conductor sleeve 320 and the leads of the insulating cable 101. [

The operation of the line connection equipment for withstanding voltage test according to the embodiment of the present invention constructed as above will be described.

First, a transmission line connection device 100 is installed in a GIS chamber 30 and a cable car 200 is installed at a position where it can be connected to a withstand voltage tester 10. The insulating cable 101 wound around the winding drum 221 is extended and connected to the plug unit 300 provided in the main body 110. At this time, since the insulating cable 101 having a high weight connected to the plug unit 300 is stably supported by the cable guide portion 140 and the cable guide plate 247, the plug unit 300 and the insulating cable 101 The load applied to the connecting portion can be reduced. This prevents the insulating cable 101 from being separated from the plug unit 300 by its own weight.

When the drive motor 235 is driven to extend the insulating cable 101, the driving force of the driving motor 235 is transmitted to the speed reducer 233 through the power transmitting member 237, The winding drum 221 is rotated, so that the insulating cable 101 can be easily extended or wound on the winding drum 221.

Thereafter, the lead wire of the divider 40 is connected to the external connection terminal unit 240 of the cable car 200, and the external connection terminal unit 240 is caused to stand up from the winding drum 221. At this time, the shock generated when the external connection terminal unit 240 rotates can be effectively buffered through the buffer support member 125, so that breakage of the insulation terminal member 243 can be prevented.

As described above, in the line connection equipment for withstanding voltage test according to the present embodiment, when the underground power transmission line 20 embedded in an area where the indoor or the space is narrow is subjected to withstand voltage test, the cable car 200 wound with the insulating cable 101 is connected to the GIS chamber It is possible to carry out the withstand voltage test of the underground transmission line 20 while ensuring stability even in a place where the place is narrow.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

10: Withstand voltage tester 20: Underground transmission line
100: connection line 101: insulated cable
110: main body 120: connecting part
130: Cable fixture 140: Cable guide part
200: cable car 210: base part
220: Cable winding portion 230: Driving portion
240: external connection terminal unit 300: plug unit
310: socket portion 320: conductor sleeve
330: Stress cone 340: Cone compression part
350: Cable coupling part

Claims (25)

A transmission line connection device installed in the GIS chamber to be connected to an underground transmission line through a GIS chamber; A cable bogie installed to be spaced apart from the transmission line connection device and connected to the transmission line connection device through an insulation cable so as to connect the withstand voltage tester and the transmission line connection device; And a plug unit provided respectively in the transmission line connection device and the cable car to connect the insulation cable,
The transmission line connection device includes:
A main body to which the plug unit is installed, the main body being detachably attached to the GIS chamber; And
A connecting unit located inside the GIS chamber to connect the plug unit and the three-phase bushing of the GIS chamber;
And the line connecting apparatus for the withstand voltage test. delete delete The method according to claim 1,
Wherein the transmission line connection device further comprises a cable fixing member coupled to the main body to fix the plug unit to the main body and to fix the insulation cable connected to the plug unit. The method according to claim 1,
Wherein the transmission line connection device further comprises a cable guide portion for guiding the insulation cable to the cable car side. The apparatus of claim 1,
A connection chamber in which the plug unit is installed; And
A flange portion having a first fastening portion and a second fastening portion to be respectively coupled to the GIS chamber and the connection chamber, and fixing the connection chamber to the GIS chamber;
And the line connecting apparatus for the withstand voltage test. [2] The apparatus of claim 1,
A connecting rod connected to the plug unit; And
A rod fixture movably fixed to the connection rod to adjust a length of the connection rod, the rod fixture being supported by the three-phase bushing;
And the line connecting apparatus for the withstand voltage test. 8. The apparatus according to claim 7, wherein the load-
A support member coupled with the three-phase bushing;
A fixing member coupled to the support member such that the engagement position of the support member is adjustable; And
A rod length adjusting member coupled to the fixing member to adjust a length of the connection rod;
And the line connecting apparatus for the withstand voltage test. The cable fixing device according to claim 4,
A base block coupled to the main body to prevent the plug unit from flowing;
A long bolt member provided on the base block; And
A cable holder coupled to the long bolt member to secure the insulated cable;
And the line connecting apparatus for the withstand voltage test. 6. The method of claim 5,
Wherein the cable guide portion reduces a load applied to a connection portion of the insulation cable connected to the plug unit. The cable guide unit according to claim 5 or 10,
A fixed block coupled to the body; And
A mounting member joined to the fixing block so that the insulating cable is mounted;
And the line connecting apparatus for the withstand voltage test. The method according to claim 1,
Wherein the length of the insulation cable is adjusted according to a distance between the cable brakes and the transmission line connection device. 13. The cable harness of claim 12,
A base portion;
A cable winding portion rotatably installed on the base portion and wound with the insulation cable; And
A driving unit provided on the base unit to rotate the cable winding unit;
And the line connecting apparatus for the withstand voltage test. 14. The method of claim 13,
Further comprising an external connection terminal unit provided in the cable winding unit for connecting the insulation cable wound to the cable winding unit and connecting the insulation cable and the withstand voltage tester. 15. The method of claim 14,
Wherein the external connection terminal unit is rotatably installed in the cable winding unit. 14. The cable lifting device according to claim 13,
A winding drum connected to the driving unit and wound with the insulating cable; And
A roller member provided on the base and supporting the winding drum rotated by the driving unit;
And the line connecting apparatus for the withstand voltage test. 17. The method of claim 16,
Wherein the cable winding portion further comprises a cable seating bracket provided on an outer surface of the winding drum so that the insulation cable wound on the winding drum is seated and supported. 14. The apparatus of claim 13,
A connecting disk connected to the cable winding portion;
A decelerator provided on the base to be coupled to the connection disc; And
A driving motor provided to the base unit to be connected to the speed reducer through a power transmitting member;
And the line connecting apparatus for the withstand voltage test. 16. The terminal according to claim 14 or 15,
A terminal support rotatably installed on the cable winding portion; And
An insulating terminal member coupled to the terminal support such that the insulating cable is connected to one end and a lead wire connected to the withstand voltage tester is connected to the other end;
And the line connecting apparatus for the withstand voltage test. 20. The method of claim 19,
Wherein the external connection terminal unit further comprises a buffer support member provided at the cable winding unit to be fixed to the terminal support or the insulation terminal member to buffer rotation of the terminal support. 20. The method of claim 19,
The external connection terminal unit further includes a cable guide plate for guiding the insulated cable to the inside of the cable winding unit while reducing a load acting on a connection site of the insulation cable connected to the insulation terminal member Line connection equipment for withstand voltage test. The plug connector according to claim 1,
A socket portion coupled to the transmission line connection device and the cable car, respectively, the socket portion being formed by an insulator;
A conductive sleeve provided inside the socket portion to be connected to the insulation cable;
A stress cone provided between the socket portion and the conductor sleeve; And
A cone compression unit for closely contacting the stress cone with the conductor sleeve so that the conductor sleeve is fixed by the stress cone;
And the line connecting apparatus for the withstand voltage test. 23. The compressor of claim 22, wherein the cone-
A contact member contacting the stress cone;
A cover member coupled to the socket portion to prevent the urging member from coming off; And
An elastic supporting member provided between the contact member and the cover member to elastically support the contact member to the stress cone;
And the line connecting apparatus for the withstand voltage test. 23. The method of claim 22,
Wherein the plug unit further comprises a cable coupling portion for coupling the conductor sleeve and the insulation cable with each other. The cable connector according to claim 24,
A connection plate coupled to the conductor sleeve and the lead; And
A coupling band for fixing the connection plate to the conductor sleeve and the conductor;
And the line connecting apparatus for the withstand voltage test.

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