Intelligent electric power capacitor module with digital display

Abstract

The application discloses a kind of intelligent power capacitor module with digital display, temperature sensor detects the temperature in capacitor and gives external controller, external controller controls the temperature of nixie tube display;Dial switch switches the working state of intelligent power capacitor module, and debugging state and working state are allowed to be selected by dial switch, external controller is in working state, the capacity that needs reactive power compensation in the circuit of switchboard is analyzed, to control the opening and closing of each relay to control the on-off of the A path and C path of two capacitors to compensate, to realize the switching of capacitor;Transformer converts the high voltage from miniature circuit breaker into low voltage for each relay;Indicator shows the state of capacitor switching and fault indication;Key is in working state for staff to switch the display content of nixie tube, switching display switching current, switching voltage and capacitor internal temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent power capacitor modules, and in particular to an intelligent power capacitor module with digital display. Background Art

[0002] Smart power capacitor modules transform the outdated control systems and capacitor switching technology of traditional reactive power compensation devices, which rely on mechanical contactors or mechatronic switches. This eliminates the bulky and cumbersome structure of traditional reactive power compensation devices. Currently, most smart power capacitor modules on the market lack displays, making it difficult to intuitively view the switching status (current and voltage) and internal capacitor temperature. Summary of the Invention

[0003] In view of the problems and shortcomings of the prior art, the present invention provides an intelligent power capacitor module with digital display.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides an intelligent power capacitor module with digital display, characterized in that it includes a capacitor, a lower plastic shell, a main board, a display board and an upper plastic shell, wherein the lower plastic shell is fixed on the top of the capacitor, the main board is fixed in the lower plastic shell, the display board is fixed on the inner side of the upper plastic shell, and the upper plastic shell cover is arranged on the top of the lower plastic shell;

[0006] The capacitor is provided with a first capacitor, a second capacitor and a temperature sensor; the main board is provided with a transformer, relay A1, relay A2, relay C1, relay C2, mutual inductor A, mutual inductor C, a temperature line socket, a display board socket and a miniature circuit breaker; the switch of the miniature circuit breaker is exposed from the upper plastic shell; the display board is provided with a dip switch, a button, a digital tube and an indicator light which are exposed from the upper plastic shell;

[0007] Interface A1-1 of relay A1 is connected to terminal A1 of a first capacitor, interface C1-1 of relay C1 is connected to terminal C1 of the first capacitor, interface A2-1 of relay A2 is connected to terminal A2 of a second capacitor, interface C2-1 of relay C2 is connected to terminal C2 of the second capacitor, wires connected to interface A1-2 of relay A1 and interface A2-2 of relay A2 pass through mutual inductor A and are fixed to interface A of a miniature circuit breaker, wires connected to interface C1-2 of relay C1 and interface C2-2 of relay C2 pass through mutual inductor C and are fixed to interface C of a miniature circuit breaker, terminal B1 of the first capacitor and terminal B2 of the second capacitor are connected to interface B of a miniature circuit breaker, interface T1 at one end and interface T2 at the other end of the temperature sensor are respectively plugged into temperature line sockets via temperature line terminals, and wiring harness terminals for the dip switch, button, digital tube, and indicator light are plugged into the display panel socket;

[0008] The temperature sensor is used to detect the temperature inside the capacitor and transmit it to the external controller, and the external controller is used to control the digital tube to display the temperature;

[0009] The DIP switch is used to switch the working state of the intelligent power capacitor module. The DIP switch allows selection of a debugging state and a working state. The debugging state indicates that manual switching on and off is allowed by pressing a button. The working state indicates that the intelligent power capacitor module is in an operating state controlled by an external controller. The external controller is used to analyze the capacity requiring reactive power compensation in the circuit of the power distribution cabinet in the working state to control the opening and closing of each relay, thereby controlling the on and off of the A and C paths of the two capacitors for compensation, thereby realizing the switching of the capacitors.

[0010] The transformer is used to convert the high voltage transmitted from the miniature circuit breaker into a low voltage for use by each relay;

[0011] The indicator light is used to display the capacitor switching status and fault indication;

[0012] The button is used for allowing the staff to switch the display content of the digital tube in the working state, switching the display of the switching current, switching voltage and the internal temperature of the capacitor.

[0013] The positive progress effect of the present invention is:

[0014] The present invention analyzes the capacity of the circuit of the power distribution cabinet that requires reactive power compensation to control the opening and closing of each relay, thereby controlling the on and off of the A and C paths of the two capacitors for compensation, thereby realizing the switching of the capacitors.

[0015] The low-voltage power capacitor module with digital display of the present invention adopts a modular structure, is small in size, easy to maintain, and simple to operate. The product switching status (switching current, voltage) and the temperature inside the capacitor can be intuitively viewed, making the working condition of the product more intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the intelligent power capacitor module according to a preferred embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the structure of a capacitor according to a preferred embodiment of the present invention.

[0018] Figure 3 and Figure 4 Schematic diagram of the structure of the motherboard of a preferred embodiment of the present invention.

[0019] Figure 5 FIG. 1 is a schematic structural diagram of a display panel according to a preferred embodiment of the present invention.

[0020] Figure 6 Schematic diagram of guide rail installation according to a preferred embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of the installation of a miniature circuit breaker according to a preferred embodiment of the present invention.

[0022] Figure 8 Schematic diagram of the miniature circuit breaker interface according to a preferred embodiment of the present invention.

[0023] Figure 9 This is a schematic diagram of the installation of the lower plastic case and capacitor in a preferred embodiment of the present invention.

[0024] Figure 10 This is a schematic diagram of the installation of a display panel on an upper plastic shell according to a preferred embodiment of the present invention.

[0025] Figure 11 This is a schematic diagram showing the effect of the display panel being installed on the upper plastic shell according to a preferred embodiment of the present invention.

[0026] Figure 12 This is a schematic diagram of the installation of the upper and lower plastic shells of a preferred embodiment of the present invention.

[0027] Figure 13 A three-dimensional diagram of an intelligent power capacitor module according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0029] As shown in Figures 1-13 The present embodiment provides a smart power capacitor module with digital display, which comprises a capacitor 10, a lower plastic shell 20, a main board 30, a display board 40 and an upper plastic shell 50.

[0030] The capacitor 10 is provided with a first capacitor, a second capacitor and a temperature sensor. The first capacitor has a terminal A1, a terminal B1 and a terminal C1. The second capacitor has a terminal A2, a terminal B2 and a terminal C2. The temperature sensor has an interface T1 and an interface T2 at two ends respectively.

[0031] The main board 30 is provided with a transformer 301, a relay A1 302, a relay A2 303, a relay C1 304, a relay C2 305, a mutual inductor A 306, a mutual inductor C 307, a temperature line socket 308, a display board socket 309, a miniature circuit breaker 310, an RJ45 interface 311 and a 3P terminal 312. The relay A1 302 has an interface A1-1 and an interface A1-2. The relay A2 303 has an interface A2-1 and an interface A2-2. The relay C1 304 has an interface C1-1 and an interface C1-2. The relay C2 305 has an interface C2-1 and an interface C2-2.

[0032] The display board 40 is provided with a code switch 41, a button 42, a digital tube 43 and an indicator light 44.

[0033] The capacitor 10 is provided with a first capacitor, a second capacitor and a temperature sensor. The first capacitor has a terminal A1, a terminal B1 and a terminal C1. The second capacitor has a terminal A2, a terminal B2 and a terminal C2. The temperature sensor has an interface T1 and an interface T2 at two ends respectively.

[0034] The installation steps of the smart power capacitor module are as follows:

[0035] Step 1: as shown in Figure 6The mainboard 30 is provided with a guide rail 313, and two screws 314 are sequentially passed through the guide rail 313 and the mainboard 30 and fixed to the inner bottom of the lower plastic shell 20. Among them, a long hole is opened at the bottom of the lower plastic shell 20 to facilitate the connection between the capacitor 10 and the mainboard 30.

[0036] Step 2: Attach the miniature circuit breaker 310 to the guide rail 313. The installation is complete. Figure 7 .

[0037] Step 3: Connect the relays on the mainboard 30 to the capacitors on the capacitor 10 and the miniature circuit breaker 310 through cables, and connect the temperature sensor to the mainboard 30. The wiring method is as follows: the interface A1-1 of relay A1 is connected to the terminal A1 of the first capacitor, the interface C1-1 of relay C1 is connected to the terminal C1 of the first capacitor, the interface A2-1 of relay A2 is connected to the terminal A2 of the second capacitor, and the interface C2-1 of relay C2 is connected to the terminal C2 of the second capacitor. The wires connecting the interface A1-2 of relay A1 and the interface A2-2 of relay A2 pass through the mutual inductor A and are fixed to the interface A of the miniature circuit breaker. The wires connecting the interface C1-2 of relay C1 and the interface C2-2 of relay C2 pass through the mutual inductor C and are fixed to the interface C of the miniature circuit breaker. The terminal B1 of the first capacitor and the terminal B2 of the second capacitor are connected to the interface B of the miniature circuit breaker. The interface T1 at one end and the interface T2 at the other end of the temperature sensor are respectively plugged into the temperature line socket 308 through the temperature line terminals. Miniature circuit breaker interface diagram Figure 8 After the cables are connected, Figure 9 shown.

[0038] Step 4: If Figure 10 , screw the display panel 40 to the inner side of the upper plastic shell 50 with two screws, and expose the DIP switch 41, button 42, digital tube 43 and indicator light 44 to the upper plastic shell 50. Connect the wiring harness terminals of the DIP switch 41, button 42, digital tube 43 and indicator light 44 to the display panel socket 309. Figure 11 .

[0039] Step 5: Figure 12 , fix the components of step 3 and step 4 with 3 screws, the switch of miniature circuit breaker 310 is exposed from the upper plastic shell, RJ45 interface 311 and 3P terminal 312 are exposed from the upper plastic shell, and since there are grooves on the upper plastic shell 50 corresponding to the exposed positions of the dial switch 41, button 42, digital tube 43 and indicator light 44, then stick the panel 51 into the groove of the upper plastic shell 50. The effect after completion is as follows Figure 13 .

[0040] The temperature sensor is used to detect the temperature inside the capacitor 10 and transmit it to the external controller. The external controller connected to the mainboard 30 via the RJ45 interface 311 is used to control the digital tube 43 to display the temperature.

[0041] The dip switch 41 is used to switch the working state of the intelligent power capacitor module. The debugging state and the working state can be selected through the dip switch 41. The debugging state indicates that it can be manually switched on and off through the button 42. The working state indicates that the intelligent power capacitor module is in an operating state controlled by an external controller. The external controller is used to analyze the capacity of the circuit of the distribution cabinet that requires reactive compensation when in the working state, to control the opening and closing of each relay, thereby controlling the on and off of the A and C paths of the two capacitors (these two capacitors can be compensated separately) for compensation, thereby realizing the switching of the capacitor 10.

[0042] The transformer 301 is used to convert the high voltage transmitted from the miniature circuit breaker 310 into a low voltage for use by each relay. The input voltage is 380V and the operating voltage of the relay is 9V.

[0043] The indicator light 44 is used to display the capacitor switching status and fault indication.

[0044] The button 42 is used for the staff to switch the display content of the digital tube in the working state, switching the display of the switching current, switching voltage and the internal temperature of the capacitor.

[0045] In this solution, the three-phase electricity is first connected to the two capacitors through miniature circuit breakers, and then four relays are used in the middle to control the on and off of the A and C paths of the two capacitors, thereby realizing the switching function of the capacitors.

[0046] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. An intelligent power capacitor module with digital display, characterized in that: It includes a capacitor, a lower plastic shell, a main board, a display panel and an upper plastic shell. The lower plastic shell is fixed on the top of the capacitor, the main board is fixed in the lower plastic shell, the display panel is fixed on the inner side of the upper plastic shell, and the upper plastic shell cover is arranged on the top of the lower plastic shell. The capacitor is provided with a first capacitor, a second capacitor and a temperature sensor; the main board is provided with a transformer, relay A1, relay A2, relay C1, relay C2, mutual inductor A, mutual inductor C, a temperature line socket, a display board socket and a miniature circuit breaker; the switch of the miniature circuit breaker is exposed from the upper plastic shell; the display board is provided with a dip switch, a button, a digital tube and an indicator light which are exposed from the upper plastic shell; Interface A1-1 of relay A1 is connected to terminal A1 of a first capacitor, interface C1-1 of relay C1 is connected to terminal C1 of the first capacitor, interface A2-1 of relay A2 is connected to terminal A2 of a second capacitor, interface C2-1 of relay C2 is connected to terminal C2 of the second capacitor, wires connected to interface A1-2 of relay A1 and interface A2-2 of relay A2 pass through mutual inductor A and are fixed to interface A of a miniature circuit breaker, wires connected to interface C1-2 of relay C1 and interface C2-2 of relay C2 pass through mutual inductor C and are fixed to interface C of a miniature circuit breaker, terminal B1 of the first capacitor and terminal B2 of the second capacitor are connected to interface B of a miniature circuit breaker, interface T1 at one end and interface T2 at the other end of the temperature sensor are respectively plugged into temperature line sockets via temperature line terminals, and wiring harness terminals for the dip switch, button, digital tube, and indicator light are plugged into the display panel socket; The temperature sensor is used to detect the temperature inside the capacitor and transmit it to the external controller, and the external controller is used to control the digital tube to display the temperature; The DIP switch is used to switch the working state of the intelligent power capacitor module. The DIP switch allows selection of a debugging state and a working state. The debugging state indicates that manual switching on and off is allowed by pressing a button. The working state indicates that the intelligent power capacitor module is in an operating state controlled by an external controller. The external controller is used to analyze the capacity requiring reactive power compensation in the circuit of the power distribution cabinet in the working state to control the opening and closing of each relay, thereby controlling the on and off of the A and C paths of the two capacitors for compensation, thereby realizing the switching of the capacitors. The transformer is used to convert the high voltage transmitted from the miniature circuit breaker into a low voltage for use by each relay; The indicator light is used to display the capacitor switching status and fault indication; The button is used for allowing the staff to switch the display content of the digital tube in the working state, switching the display of the switching current, switching voltage and the internal temperature of the capacitor.

2. The intelligent power capacitor module with digital display according to claim 1, characterized in that: The left and right ends of the top of the capacitor are respectively fixed with fixing columns, and the left and right ends of the inner bottom side of the lower plastic shell are respectively fixed with positioning caps matching the positioning columns, and the positioning caps are inserted on the corresponding positioning columns so that the lower plastic shell is fixed to the top of the capacitor, and the left and right ends of the main board are respectively provided with positioning holes matching the positioning caps, and the positioning holes are inserted on the corresponding positioning caps so that the main board is fixed in the lower plastic shell, the display panel is fixed to the inner side of the upper plastic shell by screws, and the upper plastic shell cover is provided on the top of the lower plastic shell and fixed by bolts.

3. The intelligent power capacitor module with digital display according to claim 1, characterized in that: A guide rail is fixed on the main board, and a miniature circuit breaker is clamped on the guide rail.

4. The intelligent power capacitor module with digital display according to claim 1, characterized in that: The bottom of the lower plastic shell is provided with a long hole for connecting the capacitor to the mainboard.

5. The intelligent power capacitor module with digital display according to claim 1, characterized in that: The mainboard is also provided with an RJ45 interface and a 3P terminal, the RJ45 interface and the 3P terminal are exposed from the upper plastic shell, and the external controller is connected to the mainboard via the RJ45 interface.

6. The intelligent power capacitor module with digital display according to claim 1, characterized in that: The upper plastic shell is provided with grooves corresponding to the exposed positions of the dial switch, the button, the digital tube and the indicator light, and a panel is attached to the groove.

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