High-efficiency energy-saving low-voltage reactive power compensation device

Abstract

The utility model discloses a high-efficiency energy-saving low-voltage reactive power compensation device which comprises a protection unit which comprises a protection box and a box door which is fixedly connected to one side of the protection box through a hinge, a bunching unit which comprises a bunching plate which is fixedly connected to one side of the inner wall of the protection box, and a plurality of parallel capacitors which are fixedly arranged at the bottom of the inner wall of the protection box, a plurality of bunching grooves which are uniformly distributed are formed in one side of the bunching plate, a movable plate is jointly arranged on the two sides of the inner wall of the protection box in a sliding mode, and an adjusting rod penetrating through the movable plate is rotationally connected to one side of the bunching plate. According to the utility model, the plurality of buses of the parallel capacitor can be separated from each other independently through the bunching grooves, and the U-shaped shell can be used for bending and guiding the buses, so that the buses are prevented from generating serious creases, and the low-voltage dynamic reactive power compensation device is ensured not to be influenced by the creases so as not to increase the energy consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of low-voltage reactive power compensation devices, and in particular to a high-efficiency and energy-saving low-voltage reactive power compensation device. Background Technology

[0002] The low-voltage dynamic reactive power compensation device is suitable for automatic reactive power compensation in urban distribution networks with a frequency of 50Hz and a voltage of 0.4kV. It adopts a series of domestically leading technologies and the latest components, integrating reactive power compensation and power grid monitoring. It can not only compensate for reactive power losses in the power grid, improve the power factor, and reduce line losses, thereby improving the load capacity and power supply quality of the power grid, but also monitor the three-phase voltage, current, power factor and other operating data of the power grid in real time. It can complete the comprehensive management of the entire low-voltage distribution line, including monitoring, analysis and processing, and report output, providing first-hand data for the scientific management of low-voltage distribution lines.

[0003] Low-voltage dynamic reactive power compensation devices are typically connected to low-voltage busbars or other load lines to compensate for reactive power in the entire low-voltage power distribution system, improve the power factor, reduce line losses, and improve power quality. However, existing low-voltage dynamic reactive power compensation device cabinets lack cable management structures. When multiple busbars are intertwined within the cabinet, they not only tend to clump together but may also bend, increasing their resistance. This can lead to insufficient compensation by the low-voltage dynamic reactive power compensation device, preventing the power factor from reaching the expected target and increasing reactive power losses in the power grid. Therefore, a high-efficiency, energy-saving low-voltage reactive power compensation device is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current high-efficiency energy-saving low-voltage reactive power compensation device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a high-efficiency and energy-saving low-voltage reactive power compensation device, which is suitable for solving the problem that when multiple busbars are intertwined in the cabinet, the busbars may bend, which will increase the resistance of the bent busbars, resulting in insufficient compensation by the low-voltage dynamic reactive power compensation device, the power factor cannot reach the expected target, and thus increase the reactive power loss of the power grid.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-efficiency and energy-saving low-voltage reactive power compensation device, comprising:

[0008] The protective unit includes a protective box and a door fixedly connected to one side of the protective box by a hinge. Multiple parallel capacitors are fixedly installed on the bottom of the inner wall of the protective box.

[0009] The cable management unit includes a cable management plate fixedly connected to one side of the inner wall of a protective box. Multiple evenly distributed cable management slots are provided on one side of the cable management plate. Movable plates are slidably arranged on both sides of the inner wall of the protective box. An adjusting rod is rotatably connected to one side of the cable management plate, passing through the movable plate. The adjusting rod is threadedly connected to the movable plate. A cable outlet is provided on one side of the protective box. Multiple evenly distributed U-shaped shells are fixedly connected to the top of the cable management plate, and all of the U-shaped shells pass through the cable outlet of the protective box.

[0010] As a preferred embodiment of the high-efficiency and energy-saving low-voltage reactive power compensation device of this utility model, each of the wire harness grooves has two elastic sheets fixedly connected to its inner wall, and there is a gap between two adjacent elastic sheets and they are staggered.

[0011] As a preferred embodiment of the high-efficiency and energy-saving low-voltage reactive power compensation device of this utility model, the movable plate has multiple rectangular slots on the side facing the cable tray, and an I-beam plate is slidably provided through one side of the inner wall of each rectangular slot. A spring is sleeved on the outer wall of each I-beam plate, and a rubber block is fixedly connected to the side of each I-beam plate facing the cable tray.

[0012] As a preferred embodiment of the high-efficiency and energy-saving low-voltage reactive power compensation device of this utility model, a limiting groove is provided on one side of the protective box, and a limiting plate is slidably provided on the inner side of the limiting groove.

[0013] As a preferred embodiment of the high-efficiency and energy-saving low-voltage reactive power compensation device of this utility model, the bottom of the limiting plate is provided with multiple semi-circular notches, and a rubber pad is fixedly connected to the inner wall of each semi-circular notch.

[0014] As a preferred embodiment of the high-efficiency and energy-saving low-voltage reactive power compensation device of this utility model, wherein: a protective cover is fixedly connected to one side of the protective box by a hinge, a threaded rod is slidably passed through one side of the protective cover, and a threaded hole that fits the threaded rod is opened on one side of the protective box.

[0015] The beneficial effects of this utility model are as follows: the wire harness groove allows multiple busbars of the parallel capacitor to be separated independently, and the movable plate can be used to seal the wire harness groove so that the multiple busbars will not be tangled together. The U-shaped shell can bend and guide the busbars, thereby avoiding serious creases in the busbars, and thus ensuring that the low-voltage dynamic reactive power compensation device will not be affected by creases and increase energy consumption. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of the high-efficiency energy-saving low-voltage reactive power compensation device proposed in this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the protective box proposed in this utility model;

[0019] Figure 3 This is a schematic diagram showing the positional relationship between the movable plate and the wire harness plate proposed in this utility model;

[0020] Figure 4 This is a schematic diagram showing the unfolded position of the protective cover proposed in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100. Protective unit; 101. Protective box; 102. Box door; 103. Parallel capacitor; 104. Protective cover; 105. Threaded rod; 200. Cable management unit; 201. Cable management plate; 202. Cable management groove; 203. Movable plate; 204. Adjusting rod; 205. U-shaped shell; 206. Elastic sheet; 207. Rectangular groove; 208. I-beam plate; 209. Spring; 210. Rubber block; 211. Limiting groove; 212. Limiting plate; 213. Rubber pad. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Example

[0028] Reference Figures 1-4 As an embodiment of the present invention, a high-efficiency and energy-saving low-voltage reactive power compensation device is provided, comprising: a protection unit 100 and a wire harness unit 200;

[0029] The protective unit 100 includes a protective box 101 and a door 102 that is fixedly connected to one side of the protective box 101 by a hinge. Multiple parallel capacitors 103 are fixedly installed on the bottom of the inner wall of the protective box 101.

[0030] The cable management unit 200 includes a cable management plate 201 fixedly connected to one side of the inner wall of the protective box 101. A plurality of evenly distributed cable management slots 202 are provided on one side of the cable management plate 201. Movable plates 203 are slidably provided on both sides of the inner wall of the protective box 101. An adjusting rod 204 passing through the movable plate 203 is rotatably connected to one side of the cable management plate 201. The adjusting rod 204 is threadedly connected to the movable plate 203. A cable outlet is provided on one side of the protective box 101. A plurality of evenly distributed U-shaped shells 205 are fixedly connected to the top of the cable management plate 201. All of the U-shaped shells 205 pass through the cable outlet of the protective box 101.

[0031] The door 102 on one side of the protective box 101 can be opened and closed via a hinge. The parallel capacitor 103 is mainly used to compensate for the reactive power of the inductive load in the power system, so as to improve the power factor, improve voltage quality, and reduce line losses. The technology of the parallel capacitor 103 is very mature and will not be described in detail here. The top of the parallel capacitor 103 is provided with an interface for connecting busbars. When wiring, multiple busbars are extended from the outlet of the protective box 101 into the protective box 101. The U-shaped shell 205 is in the shape of an inverted U. The U-shaped housing 205 is formed by half-section of a U-shaped tube. Each busbar is placed inside the U-shaped housing 205. The U-shaped housing 205 can smoothly guide and support the busbar to prevent the busbar from directly contacting the outlet of the protective box 101, thus preventing the busbar from creased. Then, multiple busbars are passed down one by one between the cable tray 201 and the movable plate 203. Then, the busbars are connected to the parallel capacitor 103. After the connection is completed, each busbar is moved to the corresponding cable tray 202 in sequence.

[0032] Once all busbars are located in their corresponding cable trays 202, the adjusting rod 204 is rotated to allow the movable plate 203 to slide on the inner wall of the protective box 101. When the movable plate 203 contacts the cable tray 201, the cable tray 202 is blocked by the movable plate 203, ensuring that each busbar can only be located in its corresponding cable tray 202. The cable trays 202 allow the multiple busbars of the parallel capacitor 103 to be separated independently, and the movable plate 203 blocks the cable tray 202, ensuring that the multiple busbars are vertically distributed and do not tangle together. This prevents the busbars from tangling together and avoids creases caused by a large number of busbars tangling together, thus ensuring that the low-voltage dynamic reactive power compensation device will not increase energy consumption due to creases.

[0033] In addition, two elastic sheets 206 are fixedly connected to the inner wall of each wire harness groove 202. There is a gap between two adjacent elastic sheets 206 and they are staggered. Multiple rectangular grooves 207 are opened on the side of the movable plate 203 facing the wire harness plate 201. An I-beam plate 208 is slidably installed through one side of the inner wall of each rectangular groove 207. A spring 209 is sleeved on the outer wall of each I-beam plate 208. A rubber block 210 is fixedly connected to the side of each I-beam plate 208 facing the wire harness groove 202.

[0034] Two elastic plates 206 are arranged in an interlaced V-shape. When the busbar is pressed into the cable tray 202, the busbar will squeeze the two elastic plates 206 in sequence, causing the two elastic plates 206 to bend. Then the busbar can be completely located in the cable tray 202. When the busbar is accidentally pulled, the busbar will come into contact with the elastic plates 206, causing the two elastic plates 206 to block the busbar, so as to ensure that the busbar will not fall out of the cable tray 202. When the movable plate 203 is moved, the movable plate 203 will not squeeze the busbar. When it is necessary to remove the busbar from the cable tray 202, simply squeeze the two elastic plates 206 in sequence towards the outlet, causing the elastic plates 206 to deform, and then the busbar can be removed from the cable tray 202.

[0035] Each spring 209 is located within a rectangular groove 207. When the movable plate 203 and the cable tie plate 201 approach each other, the rubber block 210 will squeeze the two elastic sheets 206 and come into contact with the busbar. The rubber block 210 is flexible and will not damage the busbar. When the movable plate 203 continues to approach the cable tie plate 201, the rubber block 210 will push the I-beam 208 to slide on the movable plate 203. At the same time, the I-beam 208 will also compress the spring 209. Through the I-beam 208 and the spring 209, the rubber block 210 can maintain contact with busbars of different diameters. The rubber block 210 and the cable tie groove 202 clamp the busbar to ensure that the busbar is in a vertical state and will not slide at the bottom of the cable tie plate 201 due to gravity, thereby preventing excess busbar from hanging at the bottom of the cable tie plate 201 and preventing the busbar from getting tangled.

[0036] Furthermore, a limiting groove 211 is provided on one side of the protective box 101, and a limiting plate 212 is slidably provided on the inner side of the limiting groove 211. Multiple semi-circular notches are provided at the bottom of the limiting plate 212, and a rubber pad 213 is fixedly connected to the inner wall of each semi-circular notch.

[0037] The limiting groove 211 is composed of vertical and horizontal sliding grooves connected to each other. The limiting plate 212 can slide in the limiting groove 211. When the limiting plate 212 is at the bottom of the limiting groove 211, the limiting plate 212 can cover the outlet of the protective box 101 to prevent a large amount of dust from entering the protective box 101. By sliding the limiting plate 212 into the horizontal end of the limiting groove 211, the limiting plate 212 will not slide down so that the outlet is not blocked, thus making it easier for workers to organize the lines.

[0038] The multiple semi-circular notches at the bottom of the limiting plate 212 correspond one-to-one with each U-shaped shell 205. When the limiting plate 212 moves to the bottom of the limiting groove 211, the semi-circular notches and the cross-section of the U-shaped shell 205 can form a circle to limit the busbar, thereby ensuring that the busbar will not come out of the U-shaped shell 205. The rubber pad 213 can flexibly limit the busbar, so that the upper surface of the busbar is contacted by the rubber pad 213, thereby avoiding damage to the busbar caused by the limiting plate 212.

[0039] Furthermore, a protective cover 104 is fixedly connected to one side of the protective box 101 via a hinge, and a threaded rod 105 slides through one side of the protective cover 104. A threaded hole that fits the threaded rod 105 is provided on one side of the protective box 101.

[0040] The protective cover 104 is used to protect the busbar at the position of the U-shaped shell 205, so that the busbar at the bend will not be damaged by external force. The protective cover 104 can be deflected to one side of the protective box 101 by a hinge. The protective cover 104 is fixed to one side of the protective box 101 by a threaded rod 105. By rotating the threaded rod 105, it is no longer connected to the threaded hole of the protective box 101, and then the protective cover 104 can be deflected to tidy up the busbar on the U-shaped shell 205.

[0041] During use, open the box door 102 and the protective cover 104, and move the limiting plate 212 to the top of the limiting groove 211. When wiring, extend multiple busbars from the outlet of the protective box 101 into the protective box 101, and guide and support each busbar through the U-shaped shell 205. Then connect the busbars to the parallel capacitor 103. After the connection is completed, move each busbar to the corresponding cable tray 202 in sequence. The two elastic pieces 206 ensure that the busbars will not fall out of the cable tray 202. When all the busbars are in the corresponding cable tray 202, rotate the adjusting rod 204 to make the movable plate 203 block the cable tray 202. When the movable plate 203 and the cable tray 201 approach each other, the rubber block 210 will squeeze the two elastic pieces 206 and contact the busbars.

[0042] The busbars are clamped by rubber blocks 210 and cable trays 202 to ensure they are vertical. When the busbars need to be removed from the cable trays 202, simply squeeze the two elastic plates 206 to deform them, and then the busbars can be removed from the cable trays 202. After the movable plate 203 is in full contact with the cable tray 201, multiple busbars are individually located in each cable tray 202 to avoid a large number of busbars from getting tangled together and causing creases. Then the box door 102 is closed, and the limiting plate 212 is moved to the bottom of the limiting tray 211 to further limit the busbars using rubber pads 213. Then the protective cover 104 is deflected to protect the busbars at the position of the U-shaped shell 205. Then the threaded rod 105 is rotated to insert into the threaded hole of the protective box 101 to fix the position of the protective cover 104.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-efficiency, energy-saving low-voltage reactive power compensation device, characterized in that, include: The protective unit (100) includes a protective box (101) and a door (102) fixedly connected to one side of the protective box (101) by a hinge. Multiple parallel capacitors (103) are fixedly installed on the bottom of the inner wall of the protective box (101). The cable management unit (200) includes a cable management plate (201) fixedly connected to one side of the inner wall of the protective box (101). The cable management plate (201) has a plurality of evenly distributed cable management slots (202) on one side. The inner walls of the protective box (101) are slidably provided with movable plates (203) on both sides. The cable management plate (201) is rotatably connected to one side and an adjusting rod (204) passing through the movable plate (203). The adjusting rod (204) is threadedly connected to the movable plate (203). The protective box (101) has a cable outlet on one side. The top of the cable management plate (201) is fixedly connected with a plurality of evenly distributed U-shaped shells (205). The plurality of U-shaped shells (205) all pass through the cable outlet of the protective box (101).

2. The high-efficiency energy-saving low-voltage reactive power compensation device according to claim 1, characterized in that: Two elastic pieces (206) are fixedly connected to the inner wall of each of the wire harness grooves (202), with gaps between adjacent elastic pieces (206) and staggered distribution.

3. The high-efficiency energy-saving low-voltage reactive power compensation device according to claim 2, characterized in that: The movable plate (203) has multiple rectangular slots (207) on the side facing the wire harness plate (201). An I-beam plate (208) is slidably inserted through one side of the inner wall of each rectangular slot (207). A spring (209) is sleeved on the outer wall of each I-beam plate (208). A rubber block (210) is fixedly connected to the side of each I-beam plate (208) facing the wire harness slot (202).

4. The high-efficiency energy-saving low-voltage reactive power compensation device according to claim 1, characterized in that: A limiting groove (211) is provided on one side of the protective box (101), and a limiting plate (212) is slidably provided on the inner side of the limiting groove (211).

5. The high-efficiency energy-saving low-voltage reactive power compensation device according to claim 4, characterized in that: The bottom of the limiting plate (212) has multiple semi-circular notches, and a rubber pad (213) is fixedly connected to the inner wall of each semi-circular notch.

6. The high-efficiency energy-saving low-voltage reactive power compensation device according to claim 1, characterized in that: A protective cover (104) is fixedly connected to one side of the protective box (101) by a hinge. A threaded rod (105) slides through one side of the protective cover (104). A threaded hole that fits the threaded rod (105) is opened on one side of the protective box (101).

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