A fuse included jumper cable for indirect wire and the method of using it

Abstract

The present invention relates to a fuse-embedded jumper cable for indirect live-line use and a method for replacing a COS using the same, and more specifically, to a fuse-embedded jumper cable for indirect live-line use and a method for replacing a COS using the same, which enables the indirect live-line uninterrupted replacement of a COS for a distribution line or a pole-mounted transformer and the uninterrupted transmission of a pole-mounted transformer within a bypass cable construction section. In an indirect live-line jumper cable for replacing a defective COS, the invention comprises: a secondary side clamp part (211) fixed to a transformer primary bushing rapid part (112) provided in a transformer (111); an insulating stick part (210) connected to the secondary side clamp part (211); and a fuse link holder part (212) connected between the secondary side clamp part (211) and the insulating stick part (210). A jumper cable (213) having one end connected to the fuse link holder (212) and the other end connected to a branch ring (118) provided in a distribution line (117) mounted on a utility pole (110); is included in a jumper cable for indirect live-line with a built-in fuse, which overcomes the difficulty of indirect live-line work using an indirect stick and provides the advantage of making it easy to replace the COS through indirect live-line work.

Description

Technology Field

[0001] The present invention relates to a fuse-embedded jumper cable for indirect live-line use and a method for replacing a COS using the same. More specifically, the invention relates to a fuse-embedded jumper cable for indirect live-line use and a method for replacing a COS using the same, which enables the uninterrupted replacement of a COS for distribution lines or pole-mounted transformers for indirect live-line use and uninterrupted power transmission of pole-mounted transformers within a bypass cable construction section. Background Technology

[0003] Direct live-line work is a method in which workers directly handle live wires carrying current with their hands while carrying out power distribution work.

[0004] Because direct live-line work poses risks such as electric shock and burns even when wearing insulating gloves and flame-retardant clothing, it is recently recommended to proceed with indirect live-line work.

[0005] Indirect live-line work can significantly reduce the risk of safety accidents by having workers use tools (such as smart sticks) from a distance of 2 to 3 meters instead of handling wires with their hands, and bypassing the section where electricity is being worked so that it does not flow (bypass cable method).

[0006] In other words, the 'indirect live-line method' is a technique in which a distribution uninterrupted (live-line) technician boards a live-line work vehicle and uses an insulating stick and tip tool to perform tasks such as cutting / compressing power lines, installing insulating covers, and protecting energized parts without contact.

[0007] However, the indirect live-line method has the problem of increasing labor costs because it takes longer to complete than the direct live-line method.

[0008] A cut-out switch (COS; hereinafter COS) used for power distribution refers to a fuse support device and may include a fuse link.

[0009] Distribution COS are classified into expulsion type and liquid-filled type, and currently, KEPCO uses expulsion-type open COS for 22.9kV lines.

[0010] In a discharge-type COS, when a fault current flows, the material on the inner wall of the fuse housing decomposes due to the arc heat generated as the fuse melts, thereby generating insulating gas. This gas suppresses the continuation of the arc and expands due to the heat to release ionized gas to the outside, extinguishing the arc and interrupting the current.

[0011] The conventional direct live-line COS uninterruptible replacement operation is as shown in Fig. 1.

[0012] First, the jumper cable support (10) is installed on the crossbar for the track.

[0013] Next, remove the branch ring cover (20) and install a temporary COS clamp on the branch ring compression part.

[0014] Next, the temporary COS lower stud bolt and the primary clamp of the jumper cable (30) are connected to each other.

[0015] Next, the secondary clamp of the jumper cable (30) is installed on the primary bushing metal part (40) of the pole transformer.

[0016] Next, the COS replacement work is performed.

[0017] As such, in the case of conventional technology, there are difficulties in indirect live-line work using indirect sticks because the total weight of the equipment required for replacement work is substantial.

[0018] Furthermore, such conventional technology had the disadvantage of requiring complex equipment and structures for uninterrupted operation, and due to the resulting difficulty of the work, there were also problems where worker safety was threatened and work efficiency was reduced.

[0019] Meanwhile, there was a disadvantage that an uninterruptible transformer was required when replacing the three-phase COS for such conventional transformers.

[0020] In other words, the inconvenience and uneconomical nature of requiring a separate uninterruptible power transformer vehicle for uninterruptible operation resulted. Prior art literature

[0022] (Patent Document 0001) KR 2249164 B1 The problem to be solved

[0023] The present invention, aimed at overcoming the problems of the conventional technology described above, is intended to provide a fuse-embedded jumper cable for indirect live-line operation and a method for replacing a COS using the same, which overcomes the difficulties of indirect live-line operation using an indirect stick and enables uninterruptible COS replacement operation without requiring a separate uninterruptible transformer vehicle. means of solving the problem

[0025] A jumper cable for indirect live-line replacement for a defective COS includes: a secondary side clamp part (211) fixed to a transformer primary bushing rapid part (112) provided in a transformer (111); an insulating stick part (210) connected to the secondary side clamp part (211); a fuse link holder part (212) connected between the secondary side clamp part (211) and the insulating stick part (210); and a jumper cable (213) having one end connected to the fuse link holder part (212) and the other end connected to a branch ring part (118) provided in a distribution line part (117) mounted on a utility pole (110).

[0026] Additionally, the jumper cable (213) includes a fuse-embedded indirect live-line jumper cable characterized by being temporarily installed on a support member (116) provided on the utility pole (110).

[0027] Additionally, the fuse link holder portion (212) includes a fuse-embedded indirect live-line jumper cable characterized by having an end formed extending upward so as to be parallel to the longitudinal direction of the utility pole (110).

[0028] In addition, the insulation stick portion (210) includes a fuse-embedded indirect live-line jumper cable characterized by having a length of at least 1.5 meters.

[0029] Additionally, the fuse link holder part (212) includes a fuse-embedded indirect live-line jumper cable characterized by having a fuse installed according to the capacity of the transformer (111).

[0030] In addition, the method includes a preparation step in which the insulation stick part (210), the secondary side clamp part (211), the fuse link holder part (212), and the jumper cable (213) are prepared in a pre-assembled state on the ground; an assembly step in which the secondary side clamp part (211) is assembled to the transformer primary bushing rapid part (112) using the insulation stick part (210); and a replacement step for replacing the defective COS using a fuse-embedded indirect live-line jumper cable.

[0031] Additionally, in an indirect live-line jumper cable for replacing a faulty COS without interruption, the fuse-embedded indirect live-line jumper cable comprises: a secondary side clamp portion (221) fixed to a transformer primary bushing rapid portion (122) provided in a transformer (121); an insulating stick portion (220) connected to the secondary side clamp portion (221); a fuse link holder portion (222) connected between the secondary side clamp portion (221) and the insulating stick portion (220); and a jumper cable (223) having one end connected to the fuse link holder portion (222) and the other end connected to a T-shaped connector portion (300).

[0032] Additionally, the T-shaped connector (300) includes a fuse-embedded indirect live-line jumper cable characterized by being directly connected to the transformer (121) to transmit power.

[0033] In addition, the fuse link holder part (222) includes a fuse-embedded indirect live-line jumper cable characterized by having a fuse installed according to the capacity of the transformer (121).

[0034] In addition, the insulation stick portion (220) includes a fuse-embedded indirect live-line jumper cable characterized by having a length of at least 1.5 meters.

[0035] In addition, the method includes a preparation step in which the insulation stick part (220), the secondary side clamp part (221), the fuse link holder part (222), and the jumper cable (223) are prepared in a pre-assembled state on the ground; an assembly step in which the secondary side clamp part (221) is assembled to the transformer primary bushing rapid part (122) using the insulation stick part (220); and a replacement step for replacing the defective COS using a fuse-embedded indirect live-line jumper cable. Effects of the invention

[0037] According to the present invention as described above, the following effects are achieved.

[0038] First, it overcomes the difficulties of indirect live-line work using indirect sticks, offering the advantage of facilitating COS replacement through indirect live-line work.

[0039] Second, according to the second preferred embodiment of the present invention, the bypass bank transmission offers the advantage of enabling easy operation without requiring a separate uninterruptible transformer vehicle like the existing one.

[0040] Third, it reduces working time compared to installing uninterruptible power transformer vehicles and resolves the problem of excessive working time, which is a disadvantage of existing indirect live-line systems, thereby increasing the application rate of indirect live-line systems and ultimately leading to improved construction quality.

[0041] Fourth, the uninterruptible power supply equipment is simplified and can be applied to indirect live lines, thereby simplifying the overall operation.

[0042] Fifth, it provides the benefits of budget savings, reduced worker fatigue, and the prevention of safety accidents through indirect live-line work.

[0043] Sixth, since the T-shaped connector part (300) is used, a separate uninterruptible transformer vehicle like the conventional one is not required. Brief explanation of the drawing

[0045] Figure 1 shows the prior art FIG. 2 is a diagram showing the replacement of an indirect live-line COS according to a preferred first embodiment of the present invention. FIG. 3 is a diagram of bypass bank transmission according to a preferred second embodiment of the present invention. Specific details for implementing the invention

[0046] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0047] When describing each drawing, similar reference numerals are used for similar components.

[0048] Terms such as first, second, etc., may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another.

[0049] For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0050] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this invention pertains.

[0051] Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0053] First, an indirect live-line COS replacement according to a preferred first embodiment of the present invention will be described.

[0054] FIG. 2 is a diagram showing the replacement of an indirect live line COS according to a preferred first embodiment of the present invention.

[0055] A transformer (111) is installed on the utility pole (110).

[0056] Meanwhile, the crossarm (115) is installed on the upper side of the utility pole (110), and a replacement target COS (114) is provided in the crossarm (115).

[0057] In addition, a crossbar is provided at the top of the pole (110), and a support member (116) is provided on the crossbar.

[0058] In addition, the distribution line section (117) is supported by an insulator on the upper crossarm of the utility pole (110).

[0059] The branch ring section (118) is installed in the distribution line section (117).

[0060] At this time, the replacement target COS (114) is the COS that is to be replaced.

[0061] In this case, the insulation stick part (210), secondary side clamp part (211), fuse link holder part (212), jumper cable (213), and clamp part (214) may be used for the replacement of the COS (114) to be replaced.

[0062] The secondary clamp portion (211) is provided to extend in the longitudinal direction of the insulating stick portion (210) from the front end of the insulating stick portion (210).

[0063] The fuse link holder portion (212) may be provided to extend upward perpendicularly to the longitudinal direction of the secondary clamp portion (211) between the secondary clamp portion (211) and the insulating stick portion (210).

[0064] At this time, a fuse may be embedded in the fuse link holder part (212).

[0065] In this case, it is desirable that the fuse be replaceable to match the transformer capacity.

[0066] The secondary clamp part (211) is fixed to the transformer primary bushing rapid part (112) provided at the top of the transformer (111).

[0067] At this time, it may be preferable for the insulating stick part (210), secondary clamp part (211), fuse link holder part (212) and jumper cable (213) to be connected to each other on the ground beforehand and then raised to the working position and connected to the transformer (111).

[0068] In this case, the weight of the insulating stick part (210), secondary side clamp part (211), fuse link holder part (212), jumper cable (213), and clamp part (214) is lighter and simpler compared to replacement equipment according to the prior art, so the effect of greatly improving workability can be achieved.

[0069] Meanwhile, the secondary clamp part (211) may preferably be made of copper.

[0070] More specifically, one end of a jumper cable (213) is connected to the upper end of the fuse link holder (212), and the other end of the jumper cable (213) is provided with a clamp part (214).

[0071] The clamp portion (214) can be temporarily fixed to the branch ring portion (118).

[0072] Meanwhile, the jumper cable (213) can be mounted on the support member (116).

[0073] Meanwhile, the length of the insulating stick portion (210) may preferably be 1.5 meters or more to facilitate indirect live-line work.

[0074] The indirect live-line COS replacement operation according to the first preferred embodiment of the present invention is as follows.

[0075] First, a secondary clamp part (211) and a fuse link holder part (212) are installed on the insulating stick part (210), and a jumper cable (213) is connected to the fuse link holder part (212). Then, the secondary clamp part (211) is fixed to the transformer primary bushing rapid part (112), which is the upper part of the transformer (111) provided on the utility pole (110).

[0076] Meanwhile, the jumper cable (213) is temporarily mounted on the support member (116), and the clamp member (214) is connected to the branch ring member (118).

[0077] In this way, a separate bypass path is formed in addition to the path passing through the existing COS wiring section (113) connected to the existing branch section (118), and the supply of current to the existing COS wiring section (113) is cut off.

[0078] Next, the replacement work of the replacement target COS (114) is completed by removing the insulation stick part (210), secondary side clamp part (211), fuse link holder part (212), jumper cable (213), and clamp part (214) that carried out the replacement work of the replacement target COS (114).

[0080] Next, a bypass bank transmission diagram according to a preferred second embodiment of the present invention will be described.

[0081] FIG. 3 is a bypass bank transmission view according to a preferred second embodiment of the present invention.

[0082] As shown in FIG. 3, in a bypass bank transmission according to a preferred second embodiment of the present invention, an insulating stick part (220), a secondary side clamp part (221), a fuse link holder part (222), a jumper cable (223), a clamp part (224), and a T-shaped connector part (300) may be used.

[0083] The insulating stick part (220), secondary side clamp part (221), fuse link holder part (222), jumper cable (223), and clamp part (224) can be prepared while connected to each other on the ground.

[0084] Meanwhile, a T-shaped connector (300) for uninterrupted power supply is provided on the ground.

[0085] That is, one end of the jumper cable (223) is connected to a T-shaped connector (300) provided on the ground, and the other end can be installed so that the clamp part (224) is detachably attached to the fuse link holder part (222).

[0086] Meanwhile, the secondary clamp part (221) may preferably be made of copper.

[0087] A transformer (121) is provided in the electric pole (120).

[0088] A transformer primary bushing rapid section (122) is provided at the top of the transformer (121).

[0089] The replacement target COS (124) is provided at one end of the crossarm (125) provided at the top of the electric pole (120).

[0090] The replacement target COS (124) is the COS that is to be replaced.

[0091] Meanwhile, one end of the existing COS wiring section (123) is connected to the upper end of the transformer primary bushing rapid section (122), and the other end is connected to the branch ring cover section (127) provided on the distribution line section (126).

[0092] In this case, the replacement work of the replacement target COS (124) is explained.

[0093] First, a secondary clamp part (221) is provided on one side of the insulating stick part (220) on the ground, and a fuse link holder part (222) is provided between the secondary clamp part (221) and the insulating stick part (220).

[0094] More specifically, one end of the fuse link holder (222) is connected to the portion between the secondary clamp portion (221) and the insulating stick portion (220), and the other end is connected to the clamp portion (224) while extending toward the ground.

[0095] One end of the jumper cable (223) is connected to the fuse link holder (222) by the clamp part (224), and the other end is connected to the ground T-shaped connector part (300).

[0096] Meanwhile, the T-shaped connector (300) plays the role of transmitting power by directly connecting to the transformer side instead of the mobile vehicle transformer within the bypass section.

[0097] Therefore, since the T-type connector part (300) is used, a separate uninterruptible transformer vehicle like the conventional one is not required.

[0098] The operator can easily connect the secondary clamp part (221) to the transformer primary bushing rapid part (122) using the insulation stick part (220), secondary clamp part (221), fuse link holder part (222), jumper cable (223), and clamp part (224) that are pre-assembled on the ground.

[0099] At this time, the worker uses the insulating stick part (220) to allow the secondary clamp part (221) to be assembled to the transformer primary bushing rapid part (122).

[0100] Meanwhile, the length of the insulating stick portion (220) may preferably be 1.5 meters or more to facilitate indirect live-line work.

[0101] At this time, a fuse may be embedded in the fuse link holder part (222).

[0102] In this case, it is desirable that the fuse be replaceable to match the transformer capacity.

[0103] In this way, by using the insulating stick part (220), the secondary clamp part (221) is connected to the upper part of the transformer primary bushing rapid part (122), and the jumper cable (223) is connected between the fuse link holder part (222) and the T-shaped connector part (300), so that the replacement target COS (124) can be replaced without interruption.

[0104] After replacing the COS (124) to be replaced, the replacement work of the COS (124) to be replaced can be completed by separating the insulation stick part (220), secondary side clamp part (221), fuse link holder part (222), jumper cable (223), clamp part (224), and T-shaped connector part (300) again.

[0105] According to the bypass bank transmission according to the preferred second embodiment of the present invention, the advantage is that work can be easily performed without requiring a separate uninterruptible transformer vehicle like the existing one.

[0106] In other words, it reduces working time compared to installing uninterruptible power transformers, and by resolving the problem of excessive working time—a disadvantage of existing indirect live-line systems—it improves the application rate of indirect live-line systems, ultimately leading to improved construction quality.

[0107] In addition, the uninterruptible power supply equipment is simplified and can be applied to indirect live lines, allowing the overall operation to be streamlined.

[0108] Ultimately, this results in budget savings, reduced worker fatigue, and the prevention of safety accidents through indirect live-line work. Explanation of the symbols

[0110] 110 : Jeonju 111 : Transformer 112: Transformer primary bushing metal part 113: Existing COS wiring section 114: COS to be replaced 115 : Wancheolbu 116 : Support member 117 : Distribution line section 118 : Branching ring 210 : Insulating stick part 211 : Secondary side clamp part 212 : Fuse link holder section 213 : Jumper cable 214 : Clamp part 120 : Jeonju 121 : Transformer 122 : Transformer primary bushing metal part 123: Existing COS wiring section 124 : COS to be replaced 125 : Wancheolbu 126 : Distribution line section 127 : Branch ring cover 220 : Insulating stick part 221 : Secondary side clamp part 222 : Fuse link holder section 223 : Jumper cable 224 : Clamp part 300 : T-type connector

Claims

Claim 1 In an indirect live-line jumper cable for replacing a defective COS, the cable comprises: a secondary clamp portion (211) fixed to a transformer primary bushing rapid portion (112) provided in a transformer (111); an insulating stick portion (210) connected to the secondary clamp portion (211); a fuse link holder portion (212) connected between the secondary clamp portion (211) and the insulating stick portion (210); and a jumper cable (213) having one end connected to the fuse link holder portion (212) and the other end connected to a branch ring portion (118) provided in a distribution line portion (117) mounted on a utility pole (110). A fuse-embedded indirect live-line jumper cable, comprising: a secondary clamp portion (211) which is arranged to extend in the longitudinal direction of the insulating stick portion (210) from the front end of the insulating stick portion (210); a fuse link holder portion (212) which extends upward perpendicularly to the longitudinal direction of the secondary clamp portion (211) between the secondary clamp portion (211) and the insulating stick portion (210), wherein the end of the fuse link holder portion (212) is formed to extend upward parallel to the longitudinal direction of the utility pole (110); and wherein the insulating stick portion (210), the secondary clamp portion (211), the fuse link holder portion (212), and the jumper cable (213) are connected to each other on the ground and raised to a working position to be connected to the transformer (111). Claim 2 ◈Claim 2 was abandoned upon payment of the registration fee.◈ A fuse-embedded indirect live-line jumper cable according to Claim 1, characterized in that the jumper cable (213) is temporarily installed on a support member (116) provided on the utility pole (110). Claim 3 delete Claim 4 ◈Claim 4 was abandoned upon payment of the registration fee.◈ A fuse-embedded indirect live-line jumper cable according to Claim 1, characterized in that the insulating stick portion (210) has a length of at least 1.5 meters. Claim 5 ◈Claim 5 was abandoned upon payment of the registration fee.◈ A fuse-embedded indirect live-line jumper cable according to Claim 1, wherein the fuse link holder part (212) is characterized by having a fuse mounted thereon according to the capacity of the transformer (111). Claim 6 delete Claim 7 In an indirect live-line jumper cable for replacing a defective COS without interruption, the cable comprises: a secondary clamp portion (221) fixed to a transformer primary bushing rapid portion (122) provided in a transformer (121); an insulating stick portion (220) connected to the secondary clamp portion (221); a fuse link holder portion (222) connected between the secondary clamp portion (221) and the insulating stick portion (220); and a jumper cable (223) having one end connected to the fuse link holder portion (222) by a clamp portion (224) and the other end connected to a T-shaped connector portion (300). It includes, on the ground, the secondary side clamp part (221) is provided on one side of the insulating stick part (220), and the fuse link holder part (222) is provided between the secondary side clamp part (221) and the insulating stick part (220), and one end of the fuse link holder part (222) is connected to the portion between the secondary side clamp part (221) and the insulating stick part (220), and the other end is connected to the clamp part (224) while extending toward the ground, and the insulating stick part (220), the secondary side clamp part (221), the fuse link holder part (222), the jumper cable (223), and the clamp part (224) are provided in a pre-assembled state on the ground and raised to a working position so that the secondary side clamp part (221) is coupled to the transformer primary bushing rapid part (122), and the T-shaped connector part (300) is the A jumper cable for indirect live-line with a built-in fuse, characterized by being directly connected to a transformer (121) for power transmission. Claim 8 delete Claim 9 A jumper cable for indirect live-line with a built-in fuse, characterized in that, in claim 7, a fuse corresponding to the capacity of the transformer (121) is mounted in the fuse link holder part (222). Claim 10 A fuse-embedded indirect live-line jumper cable according to claim 9, characterized in that the insulating stick portion (220) has a length of at least 1.5 meters. Claim 11 delete

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