Reactive power compensation system

Abstract

The utility model provides a reactive power compensation system, and relates to the technical field of valves, the reactive power compensation system is an integrated module, the integrated module comprises a fuse, a fling-cut switch, a reactor and a capacitor which are electrically connected in sequence, the integrated module is arranged in a compensation cabinet, line layout and installation are facilitated, and maintenance is simple and convenient; a plurality of heat dissipation holes are formed in an outer shell of the compensation cabinet, part of the heat dissipation holes are formed in a top plate of the outer shell, at least one draught fan is arranged on the top plate, and a damping structure is arranged between a fan of the draught fan and the compensation cabinet so as to reduce heat dissipation noise.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a reactive power compensation system. Background Art

[0002] In power systems, to reduce power losses caused by the distribution network supplying large amounts of reactive current, reactive power compensation devices of appropriate voltage levels are deployed at each receiving point. This improves grid transmission capacity and conserves valuable energy. Currently, optimizing reactive power compensation in 0.4kV low-voltage distribution networks has become an essential component in ensuring the safe and economical operation of low-voltage power grids.

[0003] The primary purpose of reactive power compensation is to stabilize grid voltage, improve power factor and equipment utilization, reduce active power loss, enhance distribution capacity, balance three-phase power, provide voltage support for the system, and improve operational safety and reliability. Because the flow of reactive power in the grid causes active power losses in related transmission and transformation equipment such as lines and transformers, impacting the economic operation of the distribution system, optimizing reactive power can improve the economic operation of the distribution system, thereby increasing distribution efficiency. Traditional reactive power compensation equipment can meet reactive power compensation requirements within a certain range, but it also presents challenges such as difficult troubleshooting and high noise levels from heat dissipation devices. Utility Model Content

[0004] The purpose of the present invention is to provide a reactive power compensation system to solve the above-mentioned problems in the prior art, which adopts an integrated compensation module, improves the heat dissipation capacity and reduces the heat dissipation noise.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] The utility model provides a reactive power compensation system, which is an integrated module. The integrated module includes a fuse, a switching switch, a reactor and a capacitor that are electrically connected in sequence. The integrated module is placed in a compensation cabinet. The outer shell of the compensation cabinet is provided with a plurality of heat dissipation holes, some of which are arranged on the top plate of the outer shell. At least one fan is arranged on the top plate, and a shock-absorbing structure is provided between the fan of the fan and the compensation cabinet.

[0007] Optionally, a mounting layer is provided below the top plate and inside the outer shell, and the mounting layer is used to fix the fan; the fan is an exhaust fan, the motor of the exhaust fan is installed at the bottom of the top plate, and the shock absorbing structure is provided between the fan and the mounting layer.

[0008] Optionally, the mounting layer has a mounting hole, and the fan extracts the heat generated by the integrated module through the mounting hole to achieve heat dissipation; a mounting bracket is connected to the edge of the mounting hole and on the side away from the top plate, and the mounting bracket is a rectangular frame, and the mounting bracket extends inward from the side of the mounting hole to form a support portion with ventilation holes, and the support portion is used to support the fan to connect the air inlet of the fan with the ventilation holes; a plurality of springs are evenly connected along a ring on the inner side wall of the mounting bracket, and baffles are respectively provided at the ends of the plurality of springs, and the plurality of baffles are abutted against the outer surface of the fan to eliminate the vibration generated by the fan in the horizontal direction.

[0009] Optionally, an inclined plate is provided on the upper end of the baffle, extending obliquely upward along a side away from the fan, and the inclined plate is used to guide the fan into the mounting frame.

[0010] Optionally, a plurality of lifting plates are provided on the side of the fan facing the motor, and the lifting plates are used to remove the fan from the mounting bracket.

[0011] Optionally, a first pad is provided on the support portion and located on the outer peripheral side of the ventilation hole, and the first pad rests against the bottom of the fan; a second pad is provided on the top plate relative to the motor, and the second pad is used to rest against the bottom of the motor.

[0012] Optionally, one side of the top plate is connected to the compensation cabinet via a rotating shaft, the rotating shaft is arranged horizontally, and a clamping structure is provided on the side of the top plate opposite to the rotating shaft to fix the top plate and the compensation cabinet.

[0013] Optionally, the fan is provided with a dust filter.

[0014] Optionally, the switching switch is a fast equal zero transition switching switch.

[0015] Optionally, a human-machine interface is provided on the outer shell, and the human-machine interface is used to control and display the working status of the reactive power compensation system.

[0016] The beneficial effects of the present invention include: the present invention provides a reactive power compensation system, which is an integrated module. The integrated module includes a fuse, a switching switch, a reactor and a capacitor that are electrically connected in sequence. The integrated module is placed in a compensation cabinet, which is convenient for line layout and installation, and maintenance is simple and convenient; a plurality of heat dissipation holes are opened on the outer shell of the compensation cabinet, some of the heat dissipation holes are arranged on the top plate of the outer shell, and at least one fan is arranged on the top plate, and a shock-absorbing structure is arranged between the fan of the fan and the compensation cabinet to reduce heat dissipation noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is one of the structural schematic diagrams of a compensation cabinet of a reactive power compensation system provided in an embodiment of the present application;

[0019] Figure 2 A second structural diagram of a compensation cabinet of a reactive power compensation system provided in an embodiment of the present application;

[0020] Figure 3 A schematic structural diagram of an integrated module of a reactive power compensation system provided in an embodiment of the present application.

[0021] Icons: 1. Fuse; 2. On-off switch; 3. Reactor; 4. Capacitor; 10. Outer shell; 11. Human-machine interface; 12. Top plate; 13. Heat dissipation holes; 14. Second pad; 20. Fan; 21. Motor; 22. Lifting plate; 30. Mounting layer; 31. Spring; 32. Slide; 33. Slide rod; 34. Baffle; 35. First pad; 36. Support part; 37. Ventilation hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0023] Traditional reactive power compensation equipment can meet reactive power compensation requirements within a certain range, but it suffers from drawbacks such as slow response and difficult troubleshooting. The integrated compensation module is prone to overheating, which increases the noise level of the heat sink. To address these issues, the present invention provides a reactive power compensation system that utilizes an integrated compensation module, improves heat dissipation capabilities, and reduces heat dissipation noise.

[0024] like Figure 1As shown, an embodiment of the present application provides a reactive power compensation system, which is an integrated module. The integrated module includes a fuse 1, a switching switch 2, a reactor 3 and a capacitor 4 that are electrically connected in sequence, and the integrated module is placed in a compensation cabinet; the outer shell 10 of the compensation cabinet is provided with a plurality of heat dissipation holes 13, some of the heat dissipation holes 13 are arranged on the top plate 12 of the outer shell 10, and at least one fan is provided on the top plate 12, and some of the heat dissipation holes 13 are arranged on the side panels of the outer shell 10, the axis of the fan is arranged vertically, and a shock-absorbing structure is provided between the fan 20 of the fan and the compensation cabinet. Figure 3 A schematic structural diagram of an integrated module of a reactive power compensation system provided in an embodiment of the present application.

[0025] The embodiment of the present application improves the heat dissipation capacity through forced air cooling, and adds a shock-absorbing structure between the fan 20 and the compensation cabinet to reduce noise.

[0026] Specifically, a mounting layer 30 is provided below the top plate 12 and inside the outer shell 10, and the mounting layer 30 is used to fix the fan; the fan is an exhaust fan, and the motor 21 of the exhaust fan is installed at the bottom of the top plate 12. The shock-absorbing structure is provided between the fan 20 and the mounting layer 30. The exhaust fan draws air upward to form a heat dissipation channel from bottom to top, thereby improving the heat dissipation capacity.

[0027] Further, such as Figure 2 As shown, the mounting layer 30 has a mounting hole, and the fan 20 extracts the heat generated by the integrated module through the mounting hole to achieve heat dissipation; a mounting bracket is connected to the edge of the mounting hole and on the side away from the top plate 12, and the mounting bracket is a rectangular frame. The side of the mounting bracket away from the mounting hole extends inward to form a support portion 36 with a ventilation hole 37, and the support portion 36 is used to support the fan 20 to connect the air inlet of the fan 20 with the ventilation hole 37; a plurality of springs 31 are evenly connected along the ring on the inner side wall of the mounting bracket, and baffles 34 are respectively provided at the ends of the plurality of springs 31, and the plurality of baffles 34 are abutted on the outer surface of the fan 20 to eliminate the vibration generated by the fan 20 in the horizontal direction.

[0028] Specifically, such as Figure 2 As shown, a plurality of base structures for installing springs are provided on the inner side wall of the mounting frame, a slide 32 is provided in the base structure, a spring 31 is provided in the slide 32, and the spring 31 and the baffle 34 are connected by a slide rod 33 to limit the slide rod 33 to slide along the extended square of the slide 32, that is, the slide rod 33 slides in the horizontal direction.

[0029] In order to facilitate the installation of the fan 20 , an inclined plate is provided on the upper end of the baffle 34 along a side away from the fan 20 and extends obliquely upward. The inclined plate is used to guide the fan 20 into the installation frame.

[0030] Furthermore, a plurality of lifting plates 22 are provided on the side of the fan 20 facing the motor 21 , and the lifting plates 22 are used to remove the fan 20 from the mounting bracket.

[0031] Specifically, a first pad 35 is provided on the support portion 36 and on the outer peripheral side of the ventilation hole 37, and the first pad 35 is against the bottom of the fan 20; a second pad 14 is provided on the top plate 12 relative to the motor 21, and the second pad 14 is used to abut against the bottom of the motor 21. The material of the first pad 35 and the second pad 14 is soft, which can reduce the vibration generated when the fan 20 and the motor 21 rotate.

[0032] In the embodiment of the present application, one side of the top plate 12 is connected to the compensation cabinet through a rotating shaft, the rotating shaft is arranged horizontally, and a clamping structure is provided on the side of the top plate 12 opposite to the rotating shaft to fix the top plate 12 and the compensation cabinet.

[0033] When installing the fan 20, the fan 20 is guided into the mounting frame through the inclined plate, the side of the frame of the fan 20 rests on the baffle 34, and the bottom of the frame of the fan 20 rests on the first pad 35. The top plate 12 is rotated to the covering position and fixed by the snap-fit structure. The second pad 14 rests on the bottom of the motor 21 to reduce vibration and noise during the operation of the fan 20.

[0034] Specifically, the fan 20 is provided with a dust filter, and the top plate 12 is easy to disassemble, so that the fan 20 is easy to inspect and replace the dust filter.

[0035] In one embodiment of the present application, the switching switch 2 is a fast zero-transition switching switch 2 .

[0036] Specifically, such as Figure 1 As shown, a human-machine interface 11 is provided on the outer shell 10 , and the human-machine interface 11 is used to control and display the working status of the reactive power compensation system.

[0037] The reactive power compensation system provided in the present application adopts an integrated compensation module, has less wiring, and is easy to install and maintain. It also has multiple protection functions, including overcurrent, overtemperature, short circuit and other protections; the embodiment of the present application adopts forced air cooling for heat dissipation, the top plate is removable for easy maintenance, and the human-machine interface 11 adopts a Chinese LCD display, which can record the number of switching times and the effective time of the capacitor; the embodiment of the present application supports RJ45 communication control (network cable) and also supports DC12V level control; the switching switch 2 supports inrush-free switching and has no impact on the system.

[0038] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A reactive power compensation system, characterized in that: The reactive power compensation system is an integrated module, comprising a fuse (1), a switching switch (2), a reactor (3) and a capacitor (4) electrically connected in sequence, and the integrated module is placed in a compensation cabinet; The outer shell (10) of the compensation cabinet is provided with a plurality of heat dissipation holes (13), some of the heat dissipation holes (13) are arranged on the top plate (12) of the outer shell (10), at least one fan is arranged on the top plate (12), and a shock-absorbing structure is provided between the fan (20) of the fan and the compensation cabinet.

2. The reactive power compensation system according to claim 1, characterized in that: A mounting layer (30) is provided below the top plate (12) and inside the outer shell (10), and the mounting layer (30) is used to fix the fan; The fan is an exhaust fan, the motor (21) of the exhaust fan is installed at the bottom of the top plate (12), and the shock absorbing structure is arranged between the fan (20) and the installation layer (30).

3. The reactive power compensation system according to claim 2, characterized in that: The mounting layer (30) has a mounting hole, and the fan (20) extracts heat generated by the integrated module through the mounting hole to achieve heat dissipation; A mounting frame is connected to the edge of the mounting hole and on a side away from the top plate (12); the mounting frame is a rectangular frame; the side of the mounting frame away from the mounting hole extends inward to form a support portion (36) having a ventilation hole (37); the support portion (36) is used to support the fan (20) so as to connect the air inlet of the fan (20) with the ventilation hole (37); A plurality of springs (31) are evenly connected in a ring shape on the inner side wall of the mounting frame, and baffles (34) are respectively provided at the ends of the plurality of springs (31). The plurality of baffles (34) are pressed against the outer surface of the fan (20) to eliminate vibrations generated by the fan (20) in the horizontal direction.

4. The reactive power compensation system according to claim 3, characterized in that: An inclined plate is provided at the upper end of the baffle (34) along a side away from the fan (20) and extending obliquely upward. The inclined plate is used to guide the fan (20) into the mounting frame.

5. The reactive power compensation system according to claim 3, characterized in that: A plurality of lifting plates (22) are provided on the side of the fan (20) facing the motor (21), and the lifting plates (22) are used to remove the fan (20) from the mounting frame.

6. The reactive power compensation system according to claim 3, characterized in that: A first cushion block (35) is provided on the support portion (36) and located on the outer peripheral side of the ventilation hole (37), and the first cushion block (35) abuts against the bottom of the fan (20); A second cushion block (14) is provided at a position of the top plate (12) relative to the motor (21), and the second cushion block (14) is used to abut against the bottom of the motor (21).

7. The reactive power compensation system according to claim 1, characterized in that: The switching switch (2) is a fast zero-transition switching switch (2).

8. The reactive power compensation system according to claim 1, characterized in that: A human-machine interface (11) is provided on the outer shell (10), and the human-machine interface (11) is used to control and display the working state of the reactive power compensation system.

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