CN214176502U

CN214176502U - Low-voltage reactive power compensation cabinet

Info

Publication number: CN214176502U
Application number: CN202022625496.5U
Authority: CN
Inventors: 孙文斌
Original assignee: Yunnan Yiertai Electric Co ltd
Current assignee: Yunnan Yiertai Electric Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-09-10
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a low-voltage reactive compensation cabinet in the technical field of low-voltage reactive compensation, which comprises a shell and a first cabinet door, the upper side wall of the shell is fixedly provided with an instrument, the left side wall of the shell is fixedly provided with a hinge, an indicator light is fixedly arranged below the instrument, a knife-fuse switch is fixedly arranged on the right side wall of the first cabinet door, a handle is fixedly arranged on the right side wall of the instrument, a numerical value setting panel is fixedly arranged on the lower side wall of the first cabinet door, the left side wall of the shell is movably provided with a second cabinet door, the utility model has reasonable design, displays the equipment operation data through the instrument, thereby facilitating the real-time mastering of the operation condition of the equipment, setting the compensation value through the value setting panel, therefore, the reactive compensation controller and the microprocessor can automatically judge switching commands through a set program, and the cabinet door is additionally provided with a safety lock to prevent the cabinet door from being opened by non-working personnel.

Description

Low-voltage reactive power compensation cabinet

Technical Field

The utility model relates to a low pressure reactive compensation technical field specifically is a low pressure reactive compensation cabinet.

Background

The low-voltage reactive compensation device plays a role in an electronic power supply system in improving the power factor of a power grid, reducing the loss of a power supply transformer and a transmission line, improving the power supply efficiency and improving the power supply environment. The reactive power compensation device is in an indispensable and very important place in the power supply system. The compensation device is reasonably selected, so that the loss of the network can be reduced to the maximum extent, and the quality of the power grid is improved. Conversely, improper selection or use may cause many factors such as power supply system, voltage fluctuation, harmonic increase, and the like.

The existing low-voltage reactive power compensation device has the problems that the switching inrush current of a capacitor is large, the capacitor is high in temperature and easy to explode, the power consumption is large, the voltage-resistant current impact is low, a contactor power factor controller is easy to damage and the like, so that the low-voltage reactive power compensation device is unstable in work, frequent maintenance is frequently needed, the production progress is seriously influenced, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low pressure reactive compensation cabinet to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low pressure reactive compensation cabinet, includes casing and first cabinet door, the fixed instrument that is provided with of last lateral wall of casing, the fixed hinge that is provided with of left side wall of casing, the fixed pilot lamp that is provided with in below of instrument, the fixed sword that is provided with of right side wall of first cabinet door melts the switch, the fixed handle that is provided with of right side wall of instrument, the fixed numerical value that is provided with of lower lateral wall of first cabinet door sets up the panel, the left side wall activity of casing is provided with the second cabinet door, the fixed observation window that is provided with of last lateral wall of second cabinet door, the fixed door plant that is provided with of right side wall of second cabinet door, the fixed door handle that is provided with of right side wall of second cabinet door, the fixed louvre that is provided with of lower lateral wall of casing, the fixed base that is provided with in bottom of casing.

Preferably, the fixed support frame that is provided with of lower lateral wall of the inner chamber of casing, the fixed connecting plate that is provided with of left lateral wall of the inner chamber of casing, the left side wall and the right side wall of casing all are equipped with the support frame, with fixation nut fixed connection between connecting plate and the support frame, the right side wall fixedly connected with fixed plate of support frame, the last lateral wall of fixed plate is fixed and is provided with the screw hole, the fixed draw-in groove that is provided with of left side wall of fixed plate.

Preferably, the fixed low-voltage capacitor that is provided with of left side wall of the inner chamber of casing, the fixed current transformer that is provided with in below of low-voltage capacitor, the fixed wireless communication module that is provided with of right side wall of the inner chamber of casing, the fixed controller that is provided with in below of wireless communication module, the fixed miniature circuit breaker that is provided with in below of current transformer, the fixed low-voltage blend switch that is provided with in below of miniature circuit breaker, the fixed ac contactor that is provided with in below of low-voltage blend switch.

Preferably, a microprocessor is fixedly arranged below the alternating current contactor, a thermal relay is fixedly arranged below the microprocessor, a reactive compensation controller is fixedly arranged below the thermal relay, and an alternating current capacitor is fixedly arranged below the reactive compensation controller.

Preferably, transparent glass is arranged on the inner side wall of the observation window, safety locks are arranged on the door handle, three instruments are arranged, and universal change-over switches are fixedly arranged below the indicating lamps.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has reasonable design, displays the equipment operation data through the instrument, thereby conveniently mastering the equipment operation condition in real time, sets the compensation value through the value setting panel, thereby realizing that the reactive compensation controller and the microprocessor automatically judge the switching command through the set program, adds a safety lock through the cabinet door to prevent the opening by non-workers, thereby avoiding the occurrence of accidental electric shock hazard conditions, connects the external receiving equipment through adding a wireless communication module, thereby conveniently operating the monitoring data remote transmission background management system and carrying out control, carries out three-phase common compensation and single-phase separate compensation through a low-voltage capacitor to improve the power factor, thereby realizing that the power supply quality is improved and the electric energy loss is reduced, forms a loop through the closed disconnection of a thermal relay and the low-voltage electric melter, thereby realizing that each phase of active current reaches balance, carries out internal temperature heat dissipation through the heat dissipation holes arranged at the bottom of the equipment, thereby effectively reducing the internal working temperature of the equipment.

Drawings

Fig. 1 is a schematic front structural view of a low-voltage reactive compensation cabinet of the present invention;

fig. 2 is a schematic view of the internal structure of a low-voltage reactive compensation cabinet of the present invention;

fig. 3 is a schematic structural view of a fixing plate of the low-voltage reactive compensation cabinet of the present invention;

fig. 4 is a side structural view of the low-voltage reactive power compensation cabinet of the present invention.

In the figure: 1. a housing; 2. a first cabinet door; 3. a meter; 4. a hinge; 5. an indicator light; 6. a knife-shaped fuse switch; 7. a handle; 8. a value setting panel; 9. a second cabinet door; 10. an observation window; 11. fixing the door plate; 12. a door handle; 13. heat dissipation holes; 14. a base; 15. a support frame; 16. a connecting plate; 17. a fixing plate; 18. a low-voltage capacitor; 19. a current transformer; 20. a wireless communication module; 21. a controller; 22. a low-voltage combination switch; 23. an AC contactor; 24. a microprocessor; 25. a thermal relay; 26. A reactive compensation controller; 27. an alternating current capacitor; 28. a miniature circuit breaker; 29. a card slot; 30. a screw hole; 31. fixing a nut; 32. a universal change-over switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a low pressure reactive power compensator cabinet as shown in fig. 1-4, including casing 1 and first cabinet door 2, casing 1's the fixed instrument 3 that is provided with of last lateral wall, casing 1's the fixed hinge 4 that is provided with of left side wall, the fixed pilot lamp 5 that is provided with in below of instrument 3, the fixed sword of being provided with of right side wall of first cabinet door 2 melts switch 6, the fixed handle 7 that is provided with of right side wall of instrument 3, the fixed numerical value that is provided with of lower lateral wall of first cabinet door 2 sets up panel 8, casing 1's left side wall activity is provided with second cabinet door 9, the fixed observation window 10 that is provided with of last lateral wall of second cabinet door 9, the fixed door plant 11 that is provided with of right side wall of second cabinet door 9, the fixed door handle 12 that is provided with of right side wall of second cabinet door 9, the fixed louvre 13 that is provided with of lower lateral wall of casing 1, casing 1's bottom is fixed and is provided with base 14, equipment operating temperature is discharged through louvre 13.

A support frame 15 is fixedly arranged on the lower side wall of the inner cavity of the shell 1, a connecting plate 16 is fixedly arranged on the left side wall of the inner cavity of the shell 1, the support frames 15 are arranged on the left side wall and the right side wall of the shell 1, the connecting plate 16 and the support frame 15 are fixedly connected through a fixing nut 31, a fixing plate 17 is fixedly connected to the right side wall of the support frame 15, a screw hole 30 is fixedly arranged on the upper side wall of the fixing plate 17, a clamping groove 29 is fixedly arranged on the left side wall of the fixing plate 17, and the position of each electrical equipment is fixed through the fixing plate 17;

a low-voltage capacitor 18 is fixedly arranged on the left side wall of the inner cavity of the shell 1, a current transformer 19 is fixedly arranged below the low-voltage capacitor 18, a wireless communication module 20 is fixedly arranged on the right side wall of the inner cavity of the shell 1, a controller 21 is fixedly arranged below the wireless communication module 20, a miniature circuit breaker 28 is fixedly arranged below the current transformer 19, a low-voltage compound switch 22 is fixedly arranged below the miniature circuit breaker 28, an alternating current contactor 23 is fixedly arranged below the low-voltage compound switch 22, and monitoring data are transmitted through the wireless communication module 20;

a microprocessor 24 is fixedly arranged below the alternating current contactor 23, a thermal relay 25 is fixedly arranged below the microprocessor 24, a reactive compensation controller 26 is fixedly arranged below the thermal relay 25, an alternating current capacitor 27 is fixedly arranged below the reactive compensation controller 26, and switching instructions are judged and processed through the microprocessor 24;

the inside wall of the observation window 10 is provided with transparent glass, the upper surface of the door handle 12 is provided with a safety lock, the number of the instruments 3 is three, the lower part of the indicator light 5 is fixedly provided with a universal change-over switch 32, and the running state of the equipment is displayed through the instruments 3.

The working principle is as follows: in the specific implementation process, the compensation value is set through the value setting panel 8, the switching command is intelligently and automatically judged according to program setting under the combined action of the low-voltage capacitor 18, the current transformer 19, the low-voltage compound switch 22, the alternating current contactor 23, the thermal relay 25, the microprocessor 24, the alternating current capacitor 27, the miniature circuit breaker 28 and the reactive compensation controller 26, the purpose of reactive compensation is achieved, the running state of the equipment is known through real-time observation of data through the instrument 3 and the indicator lamp 5, the equipment is adjusted in real time through the universal change-over switch 32, and the running state of the equipment and the monitoring data are remotely transmitted to the background management system through the wireless communication module 20.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low pressure reactive compensation cabinet, includes casing (1) and first cabinet door (2), its characterized in that: an instrument (3) is fixedly arranged on the upper side wall of the shell (1), a hinge (4) is fixedly arranged on the left side wall of the shell (1), an indicator lamp (5) is fixedly arranged below the instrument (3), a knife-fuse switch (6) is fixedly arranged on the right side wall of the first cabinet door (2), a handle (7) is fixedly arranged on the right side wall of the instrument (3), a numerical value setting panel (8) is fixedly arranged on the lower side wall of the first cabinet door (2), a second cabinet door (9) is movably arranged on the left side wall of the shell (1), an observation window (10) is fixedly arranged on the upper side wall of the second cabinet door (9), a fixed door panel (11) is fixedly arranged on the right side wall of the second cabinet door (9), a door handle (12) is fixedly arranged on the right side wall of the second cabinet door (9), and heat dissipation holes (13) are fixedly arranged on the lower side wall of the shell (1), the bottom of the shell (1) is fixedly provided with a base (14).

2. The low-voltage reactive power compensation cabinet according to claim 1, wherein: the fixed support frame (15) that is provided with of lower lateral wall of the inner chamber of casing (1), the fixed connecting plate (16) that is provided with of left side wall of the inner chamber of casing (1), the left side wall and the right side wall of casing (1) all are equipped with support frame (15), with fixation nut (31) fixed connection between connecting plate (16) and support frame (15), the right side wall fixedly connected with fixed plate (17) of support frame (15), the last lateral wall of fixed plate (17) is fixed and is provided with screw hole (30), the fixed draw-in groove (29) that is provided with of left side wall of fixed plate (17).

3. The low-voltage reactive power compensation cabinet according to claim 1, wherein: the fixed low-voltage capacitor (18) that is provided with of left side wall of the inner chamber of casing (1), the fixed current transformer (19) that is provided with in below of low-voltage capacitor (18), the fixed wireless communication module (20) that is provided with of right side wall of the inner chamber of casing (1), the fixed controller (21) that is provided with in below of wireless communication module (20), the fixed miniature circuit breaker (28) that is provided with in below of current transformer (19), the fixed low-voltage blend switch (22) that is provided with in below of miniature circuit breaker (28), the fixed ac contactor (23) that is provided with in below of low-voltage blend switch (22).

4. A low-voltage reactive power compensation cabinet according to claim 3, wherein: the low-voltage direct current power supply is characterized in that a microprocessor (24) is fixedly arranged below the alternating current contactor (23), a thermal relay (25) is fixedly arranged below the microprocessor (24), a reactive compensation controller (26) is fixedly arranged below the thermal relay (25), and an alternating current capacitor (27) is fixedly arranged below the reactive compensation controller (26).

5. The low-voltage reactive power compensation cabinet according to claim 1, wherein: transparent glass is arranged on the inner side wall of the observation window (10), safety locks are arranged on the door handles (12), three instruments (3) are arranged, and a universal change-over switch (32) is fixedly arranged below the indicator light (5).