Anti-theft box for power transmission cables in photovoltaic power generation systems

Abstract

This device prevents theft of power transmission cables (electric wires) in ground-mounted solar power facilities. [Solution] A support pole 1 is erected around a utility pole 5, and recycled plastic panels 2 made to fit the size of each piece of equipment are screwed in between the poles with square-headed screws 3 to accommodate replacement and maintenance of the equipment. Also, in order to visually check the power meter 6, a check window 4 is opened in the installed panel 2 so that the power transmission status can be confirmed.

Description

[Technical field]

[0001] This invention relates to theft prevention for power transmission cables in ground-mounted solar power facilities. [Background technology]

[0002] As for ground-mounted solar power facilities, since there are hardly any people present day or night and they are not monitored directly with the naked eye, theft of the power transmission cables (electric wires) is frequent. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] PVeyeWEB "Good Fellows develops anti-theft cable protector" [Retrieved September 15, 2024] Internet < https: / / www.pveye.jp / inside_news / view / 5202 / > [Non-Patent Document 2] ISG Corporation "Electric wire theft prevention fence" [Retrieved September 15, 2024] Internet < https: / / www.isgnet.jp / hatsuden / cases / 2302091050.php > Summary of the Invention [Problem to be solved by the invention]

[0004] The method of stealing power transmission cables appears to be mainly to cut the power transmission cables between the current transformers installed on the utility poles and the solar power equipment's collector boxes with large scissors such as wire cutters, and steal the power transmission cables between the collector boxes and the current transformers. Regarding the locations where the power transmission cables are cut, there are many places where they can be seen with the naked eye, and as a countermeasure, mesh-like protective fences and partial covers have been installed; however, in all cases, the current transformers installed at the top of the utility poles can be seen with the naked eye (see Non-Patent Documents 1 and 2), and the power transmission cables pulled into them can be easily cut. As a countermeasure, this invention solves the above-mentioned drawbacks by covering the entire utility pole with a panel, making it impossible to see the internal structure, including the current transformer, from the outside. [Means for solving the problem]

[0005] In this device, a panel is installed to surround the entire utility pole. Also, the power meter installed on the utility pole needs to be visually checked from the outside. As a countermeasure, a check window is installed in part of the insulating panel, so that the power meter can be visually checked and the power transmission status can be confirmed. In a solar power generation system in which electricity generated by multiple solar panels is collected in a collector box, and then the transmission cable (electric wire) pulled out from the collector box is transmitted via a current transformer installed on a service pole erected on the ground.This transmission cable theft prevention box for a solar power generation system is characterized in that multiple pillars taller than the current transformers are erected on the ground so as to surround the service pole, and panels are screwed between adjacent pillars, making the current transformers invisible when viewed from the side from the outside. Other features of the device include that the panel is made of an insulating recycled plastic panel, that the screw for fastening has a rectangular recess formed in the head, and that a power meter is installed on the utility pole with an inspection window located in the area facing the power meter when viewed from the side. Effect of the Invention

[0006] As mentioned above, by covering the entire utility pole with panels higher than the current transformer, the internal structure, including the current transformer, cannot be confirmed from the outside, making it difficult to find a way to steal it. From the thief's point of view, the inability to cut the cable in a short time serves as a deterrent against theft. [Brief description of the drawings]

[0007] [Figure 1] 1(a) is an elevational view of the power transmission cable anti-theft box of the solar power generation system of the present invention, and (b) is an enlarged view of the screw. [Diagram 2] 1 is an overall view showing an overview of a solar power generation system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] As shown in Figures 1(a), 1(b) and 2, an iron support 1 is erected around a service pole 5 erected on the ground, and an insulating recycled plastic panel 2 (e.g. NF board: Trademark Registration No. 5481636) is screwed in place with screws 3 with a rectangular recessed head 3a so that it surrounds the entire service pole 5. Also, a check window 4 is provided in part of the panel 2 so that the power meter 6 installed on the service pole 5 can be visually checked from the outside, making it possible to visually check the power meter 6 and confirm the power transmission status. Also, to prevent any problems during replacement or maintenance of the power meter 6, the insulating recycled plastic panels 2 are made to fit the size of each piece of equipment (current transformers, power meters, etc.).

[0009] In Figure 1(a), Figure 1(b), and Figure 2, 1 is a support made of steel square timber. The support 1 is set up on a foundation made of piles or the like on the ground to prevent it from falling over. 2 is an insulating recycled plastic panel. Panel 2 is made to fit the size of each piece of equipment (current transformer, power meter, etc.) like 2a. The screw 3 has a rectangular recess on its head like the one shown in 3a. The screw 3 is used to screw the panel 2a to the support 1. In addition, a confirmation window 4 is opened in the installed recycled plastic panel 2 so that the power meter 6 attached to the lead-in utility pole 5 can be visually checked, and the power transmission status can be confirmed. This is a solar power generation system in which electricity generated by multiple solar panels 11 is collected in a collector box 12, and then a transmission cable (electric wire) pulled out from the collector box 12 is used to transmit the electricity via a current transformer 7 installed on a service pole 5 erected on the ground. In this solar power generation system, multiple pillars 1 taller than the current transformer 7 are erected on the ground so as to surround the service pole 5, and panels 2 are fastened between adjacent pillars with screws 3, making the current transformer 7 invisible when viewed from the side from the outside. This is an anti-theft box for electric wires in a solar power generation system. Further, the panel 2 is formed from an insulating recycled plastic panel, the screw 3 has a rectangular recess formed in the head 3a, and a power meter 6 is installed on the utility pole 5, with an inspection window 4 provided in a position facing the power meter 6 in a side view. The power transmission cable 9 between the current collecting box 12 and the current transformer 7 is installed in a protective tube 10 to prevent damage, and is not fixed in place. For this reason, the power transmission cable 9 has previously been stolen by cutting the cable 9 between the current collecting box 12 and the current transformer 7 and pulling it out. On the other hand, in the case of the power transmission cable theft prevention box for the solar power system according to this embodiment, the current transformer 7 provided on the service pole 5 erected on the ground is hidden from view from the side by the panel 2 arranged so as to surround the service pole 5, so that it becomes difficult to cut the power transmission cable 9 connected to the current transformer 7. This makes it possible to prevent theft of the power transmission cable 9. The power transmission cable 9 on the input side (left side of Fig. 1(a)) of the current transformer 7 and the power transmission cable 13 on the output side (right side of Fig. 1(a)) of the current transformer 7 are each fixed inside the current transformer 7. For this reason, even if the power transmission cable 13 on the output side (right side of Fig. 1(a)) of the current transformer 7 is cut and the power transmission cable 9 adjacent to the current collecting box 12 is cut, it is not possible to pull out the power transmission cable 9 between them and steal it. In addition, the power transmission cable 13 connected from the current transformer 7 to the power company utility pole 14 is installed at a high position on the power company utility pole 14, and it is considered that theft would be difficult because it would not be easy to climb the power company utility pole 14 to carry out work. Since the power transmission cable of a solar power generation system is exposed to the outside air for long periods of time, it is possible that the insulation of the power transmission cable may be damaged, resulting in an electric leakage. To prevent this, the present invention uses an insulating panel 2 for the cable theft prevention box of the solar power generation system, making it possible to prevent an electric leakage even if the power transmission cable 9 is damaged. In addition, to prevent the insulating panel 2 from being easily removed, a special screw 3 is used, which has a square recess in the head 3a and cannot be removed without a special tool. [Explanation of symbols]

[0010] 1 post 2 panels (flat plate, curved plate) 3. Vis 4 Confirmation window 5. Electric pole 6. Power Meter 7 Current Transformers 8 meter lead-in line 9 Power transmission cable (collection box to current transformer) 10 Protection tube 11. Solar Panels 12 Current collector box 13 Power transmission cable (current transformer to power company utility pole) 14 Electric power company pole

Claims

1. In a solar power generation system in which electricity generated by multiple solar panels is collected in a collector box, and then the transmission cable pulled out from the collector box is transmitted via a current transformer installed on a service pole erected on the ground. This transmission cable theft prevention box for a solar power generation system is characterized in that multiple pillars are erected on the ground surrounding the service pole, and the panels are screwed between adjacent pillars higher than the current transformers, making the current transformers invisible when viewed from the side from the outside.

2. 2. A power transmission cable theft prevention box for a photovoltaic power generation system, wherein the panel according to claim 1 is made of an insulating recycled plastic panel.

3. 2. A photovoltaic power generation system power transmission cable theft prevention box, comprising: a screw for fastening a photovoltaic power generation system, the screw having a head portion formed with a rectangular recess;

4. A photovoltaic power generation system power transmission cable theft prevention box, characterized in that a power meter is installed on the utility pole described in claim 1, and a confirmation window is provided on the panel at the position opposite the power meter so that the power meter can be confirmed from the side from the outside.

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