Harmonic suppression power capacitor equipment

Abstract

According to the harmonic suppression power capacitor equipment, an inductor is arranged in a reactor, a capacitor and a temperature sensor are arranged in a capacitor, and a main board is provided with a relay A, a relay C, a mutual inductor A, a mutual inductor C, a temperature wire socket, a key board socket and a miniature circuit breaker; an interface A-1 of the relay A is connected with an electricity inlet interface A-1 of the inductor, a wire of an interface A-2 penetrates through the mutual inductor A and then is fixed to an interface A of the miniature circuit breaker, an interface C-1 of the relay C is connected with an electricity inlet interface C-1 of the inductor, a wire of an interface C-2 penetrates through the mutual inductor C and then is fixed to an interface C of the miniature circuit breaker, and an electricity inlet interface B-1 of the inductor is connected to an interface B of the miniature circuit breaker. An interface A, an interface B and an interface C of the capacitor are respectively connected with an electricity outlet interface A-2, an electricity outlet interface B-2 and an electricity outlet interface C-2 of the inductor, interfaces T1 and T2 of the temperature sensor are respectively inserted into the temperature wire socket, and a wire harness terminal of the key board is inserted into the key board socket.

Description

Technical Field

[0001] The utility model relates to the technical field of power capacitor equipment, in particular to a harmonic suppression power capacitor equipment. Background Art

[0002] The harmonic suppression power capacitor device is a new generation of reactive power compensation equipment used in 0.4KV low-voltage distribution networks, which is energy-efficient, filters harmonics, and improves power factor. It replaces the traditional reactive power compensation equipment composed of intelligent reactive power compensation controllers, fuses, switching switches, filter reactors, power capacitors and other loose parts. The harmonic suppression power capacitor device of this utility model is mainly composed of a capacitor and a reactor. The product adopts a modular structure, low cost, simple installation, convenient maintenance, convenient heat dissipation, simple operation, and is suitable for work scenarios such as residential power distribution. Utility Model Content

[0003] The utility model aims at the problems and shortcomings of the prior art and provides a novel harmonic suppression power capacitor device.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a harmonic suppression power capacitor device, which is characterized in that it comprises a base, a capacitor, a reactor, a reactor cover, a lower plastic shell, a main board, a key board and an upper plastic shell, wherein the capacitor is fixed on one side of the base, the reactor is fixed on the other side of the base, the upper cover of the reactor is provided with a reactor cover, the lower plastic shell is fixed on the top of the capacitor and the reactor cover, the main board is fixed in the lower plastic shell, the key 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 reactor is provided with an inductor, the capacitor is provided with a capacitor and a temperature sensor, the main board is provided with a transformer, a relay A, a relay C, a mutual inductor A, a mutual inductor C, a temperature line socket, a key board socket and a miniature circuit breaker, the switch of the miniature circuit breaker is exposed from the upper plastic shell, and the key board is provided with a dial switch, a key and an indicator light which are exposed from the upper plastic shell;

[0007] The interface A-1 of the relay A is connected to the power input interface A-1 of the inductor, the interface C-1 of the relay C is connected to the power input interface C-1 of the inductor, the wire connected to the interface A-2 of the relay A passes through the mutual inductor A and is fixed to the interface A of the miniature circuit breaker, the wire connected to the interface C-2 of the relay C passes through the mutual inductor C and is fixed to the interface C of the miniature circuit breaker, the power input interface B-1 of the inductor is connected to the interface B of the miniature circuit breaker, the interface A of the capacitor is connected to the power output interface A-2 of the inductor, the interface B of the capacitor is connected to the power output interface B-2 of the inductor, and the interface C of the capacitor is connected to the power output interface C-2 of the inductor. The interface T1 at one end of the temperature sensor and the interface T2 at the other end are respectively plugged into the temperature line socket through the temperature line terminal, and the wiring harness terminals of the dip switch, button and indicator light are plugged into the key board socket.

[0008] The harmonic suppression power capacitor device of the utility model is mainly composed of a capacitor and a reactor. The product adopts a modular structure, has low cost, simple installation, convenient maintenance, convenient heat dissipation, and simple operation, and is suitable for work scenarios such as residential power distribution. The utility model can intuitively see the working status of the power capacitor module through the LED light on the keypad, and the working status of the capacitor can be switched through the dial switch. The three-phase power of the utility model is first connected to the inductor through a miniature circuit breaker, and then through two relays in the middle, and the inductor is connected in series with the capacitor to control the on and off of the A and C paths of the capacitor, thereby realizing the switching function of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural exploded view of a harmonic suppression power capacitor device according to a preferred embodiment of the utility model.

[0010] Figure 2 The figure is a schematic diagram of the structure of a keypad according to a preferred embodiment of the present invention.

[0011] Figure 3 This is a front perspective view of a mainboard of a preferred embodiment of the present invention.

[0012] Figure 4 This is a wiring diagram of the mainboard of a preferred embodiment of the utility model.

[0013] Figure 5 This is a wiring point diagram of a capacitor according to a preferred embodiment of the present invention.

[0014] Figure 6 This is a wiring point diagram of a miniature circuit breaker according to a preferred embodiment of the present invention.

[0015] Figure 7 This is a wiring point diagram of the reactor of a preferred embodiment of the utility model.

[0016] Figure 8This is a schematic diagram of the installation of a capacitor according to a preferred embodiment of the utility model.

[0017] Fig. 9 This is a schematic diagram of the installation of a reactor according to a preferred embodiment of the utility model.

[0018] Fig.10 This is a schematic diagram of the installation of the mainboard of a preferred embodiment of the utility model.

[0019] Fig.11 This is a schematic diagram of the installation of a miniature circuit breaker according to a preferred embodiment of the utility model.

[0020] Fig.12 This is a schematic diagram of the installation of the lower plastic shell of a preferred embodiment of the utility model.

[0021] Fig.13 This is a schematic diagram of the installation of a keypad according to a preferred embodiment of the utility model.

[0022] Fig.14 This is a schematic diagram of the effect after the keypad of a preferred embodiment of the utility model is installed.

[0023] Fig.15 This is a schematic diagram of the installation of the upper plastic shell of a preferred embodiment of the utility model.

[0024] Fig.16 This is a three-dimensional diagram of a harmonic suppression power capacitor device according to a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] like Figure 1-16 As shown, the present embodiment provides a harmonic suppression power capacitor device, which includes a base 10, a capacitor 20, a reactor 30, a reactor cover 40, a lower molded case 50, a main board 60, a key board 70, an upper molded case 80 and a panel 90. The capacitor 20 is fixed on the left side of the base 10, the reactor 30 is fixed on the right side of the base 10, the upper cover of the reactor 30 is provided with a reactor cover 40, the lower molded case 50 is fixed on the top of the capacitor 20 and the reactor cover 40, the main board 60 is fixed in the lower molded case 50, the key board 70 is fixed on the inner side of the upper molded case 80, and the upper molded case 80 is covered on the top of the lower molded case 50.

[0027] like Figure 2 As shown, the keypad 70 is provided with a dial switch 71 , a key 72 and an indicator light 73 which are exposed from the upper plastic shell 80 .

[0028] like Figure 3 As shown, the mainboard 60 is provided with a transformer 601, a relay A 602, a relay C 603, a mutual inductor A 604, a mutual inductor C 605, a temperature line socket 606, a keypad socket 607, a miniature circuit breaker 608, an RJ45 interface 609 and a 3P terminal 610. The miniature circuit breaker 608 is fixed to the mainboard 60 through a guide rail 611, the guide rail 611 is fixed to the mainboard 60, the miniature circuit breaker 608 is clamped on the guide rail 611, the switch of the miniature circuit breaker 608 is exposed from the upper plastic shell 80; the RJ45 interface 609 and the 3P terminal 610 are exposed from the upper plastic shell 80, and the external controller is connected to the mainboard 60 through the RJ45 interface 609.

[0029] like Figure 4 As shown, relay A 602 has interface A-1 and interface A-2, and relay C 603 has interface C-1 and interface C-2.

[0030] like Figure 5 As shown, capacitor 20 is provided with a capacitor and a temperature sensor, the capacitor has ports A, B and C, and the temperature sensor has ports T1 and T2.

[0031] like Figure 6 As shown, the miniature circuit breaker 608 has an interface A, an interface B and an interface C.

[0032] like Figure 7 As shown, an inductor is provided inside the reactor 30, and the inductor has an input power interface A-1, an input power interface B-1 and an input power interface C-1, and the inductor has an output power interface A-2, an output power interface B-2 and an output power interface C-2.

[0033] Specific installation steps:

[0034] Step 1: If Figure 8 Two clamps 11 are fixed on the left side of the base 10 by four screws, and a capacitor 20 is clamped between the two clamps 11.

[0035] Step 2: If Fig. 9 Two L-shaped fixing plates 12 are fixed on the right side of the base 10 by four screws and nuts, and a reactor 30 is fixed between the two L-shaped fixing plates 12 by screws and nuts.

[0036] Step 3: If Fig.10 The main board 60 is installed in the lower plastic shell 50 , and a guide rail 611 is fixed on the main board 60 .

[0037] Step 4: Clip the miniature circuit breaker 608 onto the guide rail 611. The installation is complete. Fig.11 .

[0038] Step 5: The wiring method of each relay and miniature circuit breaker, capacitor, and reactor on the mainboard is as follows: interface A-1 of relay A 602 is connected to the power input interface A-1 of the inductor, interface C-1 of relay C 603 is connected to the power input interface C-1 of the inductor, the wire connected to interface A-2 of relay A 602 passes through mutual inductor A 604 and is fixed to interface A of miniature circuit breaker 608, the wire connected to interface C-2 of relay C 603 passes through mutual inductor C 605 and is fixed to interface C of miniature circuit breaker 608, the power input interface B-1 of the inductor is connected to interface B of miniature circuit breaker 608, interface A of the capacitor is connected to the power output interface A-2 of the inductor, interface B of the capacitor is connected to the power output interface B-2 of the inductor, interface C of the capacitor is connected to the power output interface C-2 of the inductor, and interface T1 at one end of the temperature sensor and interface T2 at the other end are respectively plugged into the temperature line socket 606 through the temperature line terminals. A long hole is formed at the bottom of the lower plastic shell 50 , and a notch is formed on the upper surface of the reactor cover 40 , so as to facilitate the connection between the interfaces on the capacitor 20 and the reactor 30 and the mainboard 60 .

[0039] Step 6: Fig.12 The reactor cover 40 is installed on the upper part of the reactor 30 after wiring is completed, and fixed with 4 screws on both sides.

[0040] Step 7: Fig.13 , screw the keypad 70 to the inner side of the upper plastic case 80 with two screws. Fig.14 .

[0041] Step 8: Fig.15, connect the wiring harness terminal of the keypad 70 to the keypad socket 607 of the mainboard 60, specifically plug the wiring harness terminals of the dial switch 71, the key 72 and the indicator light 73 into the keypad socket 607, and then fix the components of step 7 and step 6 with 3 screws, specifically, the top of the capacitor 20 is fixed with a hollow positioning column 21 with an internal thread, the top of the reactance cover 40 is fixed with a positioning hole 41 with an internal thread, the bottom inner side of the lower plastic shell 50 is fixed with a hollow mounting column 51 that matches the hollow positioning column 21 and the positioning hole 41 respectively, the mainboard 60 is provided with a mainboard mounting hole 612 that matches the hollow mounting column 51, and the upper plastic shell 80 is provided with an upper plastic shell mounting hole 81 that matches the bolt. , the mainboard mounting hole 612 is sleeved on the corresponding hollow mounting column 51 so that the mainboard 60 is fixed in the lower plastic shell 50, the hollow mounting column 51 matching the hollow positioning column 21 is sleeved on the corresponding hollow positioning column 21, the hollow mounting column 51 matching the positioning hole 41 is aligned with the corresponding positioning hole 41, and the upper plastic shell mounting holes 81 are sequentially penetrated from top to bottom by bolts 90 and threadedly connected to the hollow positioning column 21, and the upper plastic shell mounting holes 81 are sequentially penetrated from top to bottom by bolts 90 and threadedly connected to the positioning holes 41, so that the lower plastic shell 50 is installed on the top of the capacitor 20 and the reactor cover 40, and the upper plastic shell 80 is covered on the top of the lower plastic shell 50; then the panel 100 is attached to the groove of the upper plastic shell 80. The effect after completion is as follows Fig.16 .

[0042] In this embodiment, the temperature sensor is used to detect the temperature inside the capacitor 20 and transmit it to the external controller.

[0043] The dip switch 71 is used to switch the working state of the power capacitor module. The dip switch 71 allows selection of the debugging state and the working state. The debugging state indicates that manual switching on and off is allowed through the button 72. The working state indicates that the power capacitor module is controlled by an external controller. The external controller is used to analyze the capacity of the circuit of the distribution cabinet that requires reactive power compensation in the working state to control the opening and closing of each relay to control the on and off of the capacitor A and C circuits for compensation, thereby realizing the switching of the capacitor 20.

[0044] The indicator light 73 is used to display the capacitor switching status and fault indication.

[0045] The transformer 601 is used to convert the high voltage transmitted from the miniature circuit breaker 608 into a low voltage for use by each relay.

[0046] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection 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 principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A harmonic suppression power capacitor device, characterized in that: It includes a base, a capacitor, a reactor, a reactor cover, a lower plastic shell, a main board, a key board and an upper plastic shell, wherein the capacitor is fixed on one side of the base, the reactor is fixed on the other side of the base, the upper cover of the reactor is provided with a reactor cover, the lower plastic shell is fixed on the top of the capacitor and the reactor cover, the main board is fixed in the lower plastic shell, the key board is fixed on the inner side of the upper plastic shell, and the upper plastic shell cover is provided on the top of the lower plastic shell; The reactor is provided with an inductor, the capacitor is provided with a capacitor and a temperature sensor, the main board is provided with a transformer, a relay A, a relay C, a mutual inductor A, a mutual inductor C, a temperature line socket, a key board socket and a miniature circuit breaker, the switch of the miniature circuit breaker is exposed from the upper plastic shell, and the key board is provided with a dial switch, a key and an indicator light which are exposed from the upper plastic shell; The interface A-1 of the relay A is connected to the power input interface A-1 of the inductor, the interface C-1 of the relay C is connected to the power input interface C-1 of the inductor, the wire connected to the interface A-2 of the relay A passes through the mutual inductor A and is fixed to the interface A of the miniature circuit breaker, the wire connected to the interface C-2 of the relay C passes through the mutual inductor C and is fixed to the interface C of the miniature circuit breaker, the power input interface B-1 of the inductor is connected to the interface B of the miniature circuit breaker, the interface A of the capacitor is connected to the power output interface A-2 of the inductor, the interface B of the capacitor is connected to the power output interface B-2 of the inductor, and the interface C of the capacitor is connected to the power output interface C-2 of the inductor. The interface T1 at one end of the temperature sensor and the interface T2 at the other end are respectively plugged into the temperature line socket through the temperature line terminal, and the wiring harness terminals of the dip switch, button and indicator light are plugged into the key board socket.

2. The harmonic suppression power capacitor device according to claim 1, characterized in that: Two clamps are fixed on one side of the base, and a capacitor is clamped between the two clamps.

3. The harmonic suppression power capacitor device according to claim 1, characterized in that: Two L-shaped fixing plates are fixed on the other side of the base, and the reactor is fixed between the two L-shaped fixing plates by screws and nuts.

4. The harmonic suppression power capacitor device according to claim 1, characterized in that: Screws are fixed on opposite sides of the upper part of the reactor, and the reactor cover is fixed by means of screws and nuts.

5. The harmonic suppression power capacitor device according to claim 1, characterized in that: A hollow positioning column with an internal thread is fixed on the top of the capacitor, a positioning hole with an internal thread is fixed on the top of the reactance cover, a hollow mounting column matching the hollow positioning column and the positioning hole is fixed on the inner side of the bottom of the lower plastic shell, a mainboard mounting hole matching the hollow mounting column is provided on the mainboard, an upper plastic shell mounting hole matching the bolt is provided on the upper plastic shell, the mainboard mounting hole is sleeved on the corresponding hollow mounting column so that the mainboard is fixed in the lower plastic shell, the hollow mounting column matching the hollow positioning column is sleeved on the corresponding hollow positioning column, the hollow mounting column matching the positioning hole is aligned with the corresponding positioning hole, the upper plastic shell mounting holes are sequentially penetrated from top to bottom by the bolts and threadedly connected to the hollow positioning columns, and the upper plastic shell mounting holes are sequentially penetrated from top to bottom by the bolts and threadedly connected to the positioning holes, so that the lower plastic shell is installed on the top of the capacitor and the reactance cover, and the upper plastic shell cover is arranged on the top of the lower plastic shell.

6. The harmonic suppression power capacitor device according to claim 1, characterized in that: The keypad is fixed to the inner side of the upper plastic shell by screws.

7. The harmonic suppression power capacitor device 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.

8. The harmonic suppression power capacitor device according to claim 1, characterized in that: The bottom of the lower plastic shell is provided with a long hole, and the upper surface of the reactor cover is provided with a notch so as to facilitate the connection between the interfaces on the capacitor and the reactor and the mainboard.

9. The harmonic suppression power capacitor device 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.

10. The harmonic suppression power capacitor device 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 and the indicator light, and a panel is attached to the inside of the groove.

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