A fully automatic arc detection device and detection method thereof

Abstract

The present application relates to a fully automatic arc detection device, including a host computer, several network simulators, the network simulator is used to simulate the line physical characteristics of the inverter; an arc component is used to generate the arc required for the test; an oscilloscope reads the current and voltage; several DC simulation power supplies are used to power on the arc component; a control touch screen is used to manually or automatically control and adjust the relevant parameters of the arc component; a terminal block is used to connect the products that need to be tested. Advantages: By setting a network simulator for simulating the line physical characteristics of the inverter, and configuring a DC simulation power supply, an oscilloscope, etc. to obtain test parameters, the working state of the power grid simulation AC conversion device is controlled according to the test parameters, and the power grid energy supply during the working process of the photovoltaic inverter under test is simulated. Without the participation of staff, the test conditions can be automatically switched, which is conducive to improving the working efficiency of the photovoltaic inverter test process.

Description

Technical Field

[0001] The present application belongs to the technical field of arc detection, and in particular, relates to a fully automatic arc detection device and a detection method thereof. Background Art

[0002] In the traditional photovoltaic inverter testing process, the staff needs to connect the corresponding test equipment, such as the power grid simulation AC conversion device, AC / DC conversion device, transformer device, etc., according to the steps specified in the corresponding test method, and test them one by one. Since the photovoltaic inverter testing process involves a variety of test conditions, the staff needs to frequently perform wiring according to the test requirements of different test conditions. The test operation is complicated, and the DC arc generator that generates the arc also requires additional equipment. Summary of the invention

[0003] The technical problem to be solved by the present invention is: to solve the problem of complicated testing in the prior art, thereby providing a fully automatic arc detection device and a detection method thereof to improve the detection efficiency.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a fully automatic arc detection device, comprising a frame, a host computer with a display screen is arranged in the frame, and the host computer is located at the front end of the outer side of the frame;

[0005] Several network simulators, which are used to simulate the physical characteristics of the inverter lines;

[0006] The arc drawing assembly is used to generate the arc required for the test, including a fixed plate and a linear slide mounted on the fixed plate.

[0007] The slider of the linear slide is provided with a slider connecting plate, and a left pole frame and a mounting frame are detachably provided on the front of the slider connecting plate. A plurality of movable holes are opened on the mounting frame, and a fixing rod that can move up and down is provided in the movable hole. A right pole column cover is provided at one end of the fixing rod close to the left pole frame, and a left pole flange is provided below the left pole frame and at a position corresponding to the right pole column cover. A left pole column ring that matches the shape of the right pole column cover is provided below the left pole flange, and a spring is sleeved on one end of the fixing rod away from the left pole frame and a spring stopper that prevents the spring from detaching is provided;

[0008] An electric cylinder for driving the movement of the fixed rod is provided under the fixed plate. The electric cylinder is installed under the fixed plate through a bracket. A conductive head for connecting the right pole cover to the power supply is provided at one end of the electric cylinder close to the spring stopper. A plurality of position sensors for detecting the position of the slider are provided on the fixed plate. The right pole cover and the left pole ring are provided with a plurality of groups. The electric cylinder drives the right pole cover and the left pole ring to produce an arc. When the left pole ring is damaged, the linear slide is driven to drive the slider connecting plate to move. Then, the left pole ring is replaced, which can extend the service life of the arcing component and improve the test efficiency.

[0009] Oscilloscope, read the current and voltage of arc-drawing components and network simulator;

[0010] Several DC simulation power supplies, the simulation power supplies are used to power up the arc drawing components;

[0011] Control the touch screen to manually or automatically adjust the relevant parameters of the arc drawing component;

[0012] The joystick is manually operated to control the moving position;

[0013] Terminal blocks, used to connect products that need to be tested;

[0014] The electrical components include PLC, temperature sensor, relay, switching power supply, filter, AC contactor to separator;

[0015] Wiring terminals connect the terminal blocks, DC simulation power supply, oscilloscope, arc drawing assembly, network simulator, host computer, control touch screen, electrical components layout, and control the product to be tested to be connected to the electrical components layout.

[0016] Furthermore, it also includes a servo driver installed in the frame, the motor in the linear slide is a servo motor, and the servo driver controls the servo motor of the linear slide.

[0017] Furthermore, a crown spring female needle fixing block is provided on the outer side of the left pole frame, and a crown spring female needle and a crown spring male needle which are matched and plugged into each other are provided in the crown spring female needle fixing block.

[0018] Furthermore, a flange fixed on the mounting frame is provided on the fixing rod and located between the right pole cover and the mounting frame.

[0019] Furthermore, the invention also includes a temperature sensor for detecting the temperature in the rack and an axial flow fan unit for cooling the rack.

[0020] Furthermore, an insulating plate is installed on the front side of the slider connecting plate, and an assembly groove is provided on the front side of the slider connecting plate. The insulating plate can be installed in the assembly groove. Positioning holes are provided on the opposite sides of the slider connecting plate, and the positioning holes extend into the insulating plate. Plunger pins are inserted between the positioning holes on one side, and two installation grooves for installing the left pole frame and the mounting frame are provided on the front side of the insulating plate.

[0021] Furthermore, the oscilloscope is located above the control touch screen and is installed on the front of the rack. The DC analog power supply and the wiring terminals are located on the bottom surface of the rack. The electrical component arrangement is vertically installed in the rack, so that the structural layout saves space.

[0022] Furthermore, side sealing plates are provided on both sides of the frame, a top sealing plate is provided on the top, a rear panel is provided on the back, the rear panel is provided with heat dissipation holes and a cooling fan, and a transparent safety protection door which can be opened for power-off protection is provided on the front of the frame, and the transparent safety protection door protects the arc pulling component.

[0023] Furthermore, the upper computer is installed outside the rack through a rotatable display bracket to change the position of the upper computer.

[0024] A detection method for a fully automatic arc detection device comprises the following steps:

[0025] F1. Power on the equipment and host computer, turn on the circuit switches in the equipment, and close the transparent safety protection door;

[0026] F2, select manual mode and automatic mode;

[0027] F3, select manual mode, open the host computer and select the test mode on the control touch screen or host computer according to the type of product to be tested, control the circuit switching of the electrical components and network simulation, and set the arc drawing component speed and distance option parameters;

[0028] F4. Insert the product connection line into the terminal block, set the power mode, and start the test;

[0029] F5, start the arc test, then the arc assembly starts, the telescopic movement of the electric cylinder drives the right pole cover and the left pole ring from contact to separation to generate an arc; at the same time, the oscilloscope runs, reads the waveform, and displays the current and voltage. The test ends and the equipment is powered off;

[0030] F6, select automatic mode;

[0031] F7, automatic mode of the host computer, select the test mode and test times according to the product type;

[0032] F8. Then the arc drawing assembly is started, and the telescopic movement of the electric cylinder drives the right pole cover and the left pole ring from contact to separation to generate an arc. At the same time, the oscilloscope runs, reads the waveform, and displays the current and voltage. The test is completed and the equipment is powered off.

[0033] The beneficial effects of the present invention are:

[0034] The product of the present invention sets a network simulator for simulating the physical characteristics of the inverter line, and configures a DC simulation power supply, an oscilloscope, etc. to obtain test parameters, controls the working state of the power grid simulation AC conversion device according to the test parameters, simulates the power grid energy supply during the working process of the tested photovoltaic inverter, and can automatically switch the test conditions without the participation of staff, which is conducive to improving the working efficiency of the photovoltaic inverter test process;

[0035] The product of the present invention is also specially provided with an arc-drawing component for realizing arc generation by multiple groups of coordinated products. The arc-drawing component is arranged in the equipment to improve the testing requirements, and this structure can prolong the service life and is also convenient for replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Figure 1 This is a schematic diagram of the explosion structure of an embodiment of a fully automatic arc detection device and a detection method thereof of the present application;

[0038] Figure 2 It is a structural schematic diagram of a left pole flange, an electric cylinder, and a flange in an embodiment of a fully automatic arc detection device and a detection method thereof of the present application;

[0039] Figure 3 It is a structural schematic diagram of a crown spring female needle, a plunger pin, and a mounting groove of an embodiment of a fully automatic arc detection device and a detection method thereof of the present application;

[0040] Figure 4 It is a structural schematic diagram of a left pole ring and a position sensor of an embodiment of a fully automatic arc detection device and a detection method thereof of the present application;

[0041] Figure 5 It is a schematic diagram of an exploded structure from another perspective of an embodiment of a fully automatic arc detection device and a detection method thereof of the present application;

[0042] Figure 6 This is a schematic diagram of the internal structure of a frame after assembly according to an embodiment of a fully automatic arc detection device and a detection method thereof of the present application;

[0043] The reference numerals in the figure are:

[0044] 1. Rack, 2. Host computer, 3. Network simulator, 4. Arc drawing assembly, 5. Fixed plate, 6. Linear slide, 7. Rocker manual operation to control the moving position, 8. Slider connecting plate, 9. Left pole rack, 10. Mounting frame, 11. Active hole, 12. Fixed rod, 13. Right pole cover, 14. Left pole flange, 15. Left pole ring, 16. Spring, 17. Spring stopper, 19. Electric cylinder, 20. Conductive head, 21. Position sensor, 22. Oscilloscope, 23. DC analog power supply, 24. Control touch screen, 25. Terminal block, 26. Electrical parts arrangement, 27. Terminal block, 29. Servo driver, 30. Crown spring female pin fixing block, 31. Crown spring female pin, 32. Crown spring male pin, 33. Flange, 34. Insulation plate, 35. Assembly slot, 36. Positioning hole, 37. Plunger pin, 38. Mounting slot, 39. Axial flow fan unit, 40. Side sealing plate, 41. Top sealing plate, 42. Rear panel, 43. Heat dissipation hole, 44. Transparent safety protection door, 45. Rotatable display stand. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0048] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Example

[0049] This embodiment provides a fully automatic arc detection device, including a frame 1 and a host computer 2, wherein the host computer 2 is located at the front end of the outer side of the frame 1;

[0050] A plurality of network simulators 3, which can be connected in series or in parallel, are used to simulate the line physical characteristics of the inverter;

[0051] The arc drawing assembly 4 is used to generate an arc required for testing, and includes a fixed plate 5 and a linear slide 6 mounted on the fixed plate 5. The linear slide 6 can be an electric slide, a belt linear module, a linear module, a KK module, or the like, which is a device for realizing linear drive.

[0052] The slider of the linear slide 6 is provided with a slider connecting plate 8, and the front of the slider connecting plate 8 is provided with an easily disassembled and opposite left pole frame 9 and a mounting frame 10, and a plurality of movable holes 11 are opened on the mounting frame 10, and a fixed rod 12 that can move up and down is inserted in the movable hole 11, and a right pole cover 13 is provided at one end of the fixed rod 12 close to the left pole frame 9, and a left pole flange 14 is provided below the left pole frame 9 and at a position corresponding to the right pole cover 13, and a left pole ring 15 adapted to the shape of the right pole cover 13 is provided below the left pole flange 14, and a spring 16 is sleeved on one end of the fixed rod 12 away from the left pole frame 9, and a spring stopper 17 is provided to prevent the spring 16 from being separated;

[0053] An electric cylinder 19 is provided under the fixed plate 5 to drive the fixed rod 12 to move toward the left pole ring 15. A conductive head 20 is provided at one end of the electric cylinder 19 close to the spring stopper 17 to connect the right pole cover 13 to the power supply. The electric cylinder 19 drives the conductive head 20 to move linearly. When moving away from the left pole ring 15, the conductive head 20 and the fixed rod 12 are separated from each other. At the same time, the fixed rod 12 lifts the right pole cover 13 and the left pole ring 15 are separated from each other to generate an arc. When the service life of one of the left pole rings 15 is exhausted, the linear slide 6 drives the slider connecting plate 8 to move, and moves the next left pole ring 15 to correspond to the right pole cover 13, and continues the arc drawing action.

[0054] A plurality of position sensors 21 for detecting the position of the sliders of the linear slide 6 are disposed on the fixing plate 5 , and the position sensors 21 are arranged at positions that need to be detected.

[0055] A crown spring female needle fixing block 30 is installed on the outer side of the left pole frame 9, and a crown spring female needle 31 and a crown spring male needle 32 that cooperate with each other are arranged in the crown spring female needle fixing block 30. The crown spring female needle 31 quickly plugs in and out the cable, and the crown spring male needle 32 connects the cable and quickly fixes the cable.

[0056] In order to stabilize the right pole cover 13, a flange 33 fixed to the mounting frame 10 is provided on the fixing rod 12 and located between the right pole cover 13 and the mounting frame 10;

[0057] Oscilloscope 22, reading current and voltage;

[0058] A plurality of DC analog power supplies 23 for powering the arc drawing assembly 4;

[0059] Control the touch screen 24 to manually or automatically control and adjust the relevant parameters of the arc drawing component 4;

[0060] The rocker is manually operated to control the moving position 7, and a separate mechanism can be used to control the operation of the electric cylinder of the arc drawing assembly;

[0061] Terminal block 25, used to connect the product to be tested;

[0062] The electrical components are arranged in 26, including PLC, temperature sensor, relay, switching power supply, filter, AC contactor to separator;

[0063] The wiring terminal 27 connects the wiring terminal block 25, the DC simulation power supply 23, the oscilloscope 22, the arc drawing component 4, the network simulator 3, the host computer 2, the control touch screen 24, and the electrical component arrangement component 26. The control wiring terminal 27 controls the product to be tested to be connected to the electrical component arrangement component 26.

[0064] It also includes a servo driver 29 installed in the frame 1. The motor in the linear slide 6 is a servo motor. The servo driver 29 controls the servo motor of the linear slide to achieve high-precision positioning. When the linear slide 6 drives the slider connecting plate 8 to move, the corresponding left pole ring 15 can be accurately aligned with the right pole cover 13 below.

[0065] In order to facilitate the loading and unloading of the linear slide 6, left pole frame 9 and mounting frame 10 components, an insulating plate 34 that improves safety of use is also provided on the front of the slider connecting plate 8. An assembly groove 35 is provided on the front of the slider connecting plate 8, and the insulating plate 34 can be installed in the assembly groove 35. Positioning holes 36 are provided on both sides of the slider connecting plate 8, and the positioning holes 36 are all inserted into the insulating plate 34. A plunger pin 37 is inserted between the positioning holes 36 on the same side. In order to more conveniently connect the insulating plate 34 and the slider connecting plate 8, the two opposite sides of the assembly groove 35 in the other direction where the positioning holes 36 are not provided are penetrated by the slider connecting plate 8, so that the slider connecting plate 8 is U-shaped. Two mounting grooves 38 for mounting the left pole frame 9 and the mounting frame 10 are provided on the front of the insulating plate 34. By removing the plunger pin 37, the insulating plate 34 can be removed from the slider connecting plate 8, so that the linear slide 6 can also be easily removed from the fixed plate 5.

[0066] The preferred equipment layout is that the oscilloscope 22 is located above the control touch screen 24 and both are installed on the front of the rack 1, the DC analog power supply 23 and the terminal block 27 are both located on the inner bottom surface of the rack 1, and the electrical component arrangement member 26 is vertically installed in the rack 1. These devices can also be reasonably arranged according to practical needs; it also includes a temperature sensor for detecting the temperature in the rack 1, and an axial flow fan unit 39 for cooling the rack 1. According to the temperature feedback from the temperature sensor, if the temperature exceeds the set value, the axial flow fan unit 39 is started to dissipate heat, and universal wheels and other walking equipment can also be set at the four corners of the bottom of the rack 1.

[0067] Side sealing plates 40 are provided on both sides of the rack 1, a top sealing plate 41 is provided on the top, and a rear panel 42 is provided on the back. The side sealing plates 40, the top sealing plate 41 and the rear panel 42 close the corresponding outer side surfaces of the rack 1. The rear panel 42 is provided with heat dissipation holes 43 and a heat dissipation fan. The heat dissipation fan is installed at the position where the heat dissipation holes 43 are provided. A transparent safety protection door 44 for power-off protection is provided on the front of the rack 1. The transparent safety protection door 44 protects the arc pulling component 4, which is convenient for viewing and opening for maintenance. There is also a three-color alarm on the top of the rack 1.

[0068] For convenience and practicality and to save space occupied by the equipment, the host computer 2 is installed outside the rack 1 through a rotatable display bracket 45. The host computer 2 can be rotated to adjust the angle of the host computer 2. It can be adjusted to the surface where the touch screen 24 is located, or rotated to be parallel to the side of the rack 1 to save space.

[0069] A detection method for a fully automatic arc detection device comprises the following steps:

[0070] F1. Power on the equipment and host computer 2, turn on the circuit switches in the equipment, and close the transparent safety protection door;

[0071] F2, select manual mode and automatic mode;

[0072] F3, select manual mode, open the host computer 2 and select the test mode on the control touch screen or host computer 2 according to the type of product to be tested, control the circuit switching of the electrical components and network simulation, and set the arc drawing component speed and distance option parameters;

[0073] F4. Insert the product connection line into the terminal block, set the power mode, and start the test;

[0074] F5, start the arc test, then the arc assembly starts, the telescopic movement of the electric cylinder drives the right pole cover and the left pole ring from contact to separation to generate an arc; at the same time, the oscilloscope runs, reads the waveform, and displays the current and voltage. The test ends and the equipment is powered off;

[0075] F6, select automatic mode;

[0076] F7, automatic mode of host computer 2, select test mode and test times according to product type;

[0077] F8. Then the arc drawing assembly is started, and the telescopic movement of the electric cylinder drives the right pole cover and the left pole ring from contact to separation to generate an arc. At the same time, the oscilloscope runs, reads the waveform, and displays the current and voltage. The test is completed and the equipment is powered off.

[0078] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A fully automatic arc detection device, comprising a frame, characterized in that: It also includes the host computer; A plurality of network simulators, wherein the network simulators are used to simulate the line physical characteristics of the inverter; The arc drawing assembly is used to generate an arc required for testing, and includes a fixed plate and a linear slide mounted on the fixed plate. The slider of the linear slide is provided with a slider connecting plate, and the front of the slider connecting plate is provided with an easily disassembled and opposite left pole frame and a mounting frame, and the mounting frame is provided with a plurality of movable holes, and a fixing rod that can move up and down is provided in the movable hole, and a right pole column cover is provided at one end of the fixing rod close to the left pole frame, and a left pole flange is provided below the left pole frame and at a position corresponding to the position of the right pole column cover, and a left pole column ring adapted to the shape of the right pole column cover is provided below the left pole flange, and a spring and a spring stopper to prevent the spring from detaching are sleeved at one end of the fixing rod away from the left pole frame; an electric cylinder for driving the fixing rod to move is provided below the fixing plate, and a conductive head for realizing the right pole column cover being connected to the power supply is provided at one end of the electric cylinder close to the spring stopper, and a plurality of position sensors for detecting the position of the slider are provided on the fixing plate; An oscilloscope, which reads the current and voltage of the network simulator and the arc-drawing component; A plurality of DC simulation power supplies, wherein the DC simulation power supplies are used to power the arc drawing components; A control touch screen, wherein the control touch screen manually or automatically controls and adjusts parameters related to the arc drawing component; The rocker is manually operated to control the moving position, and the rocker is manually operated to control the moving position to control the operation of the electric cylinder; A terminal block, wherein the terminal block is used to connect the product to be tested; An electrical component arrangement, wherein the electrical component arrangement includes a PLC, a temperature sensor, a relay, a switching power supply, a filter, and an AC contactor to a separator that are connected to each other; The wiring terminals are connected to the wiring terminal block, the DC simulation power supply, the oscilloscope, the arc drawing component, the network simulator, the host computer, the control touch screen, and the electrical component arrangement component, and control the product to be tested to be connected to the electrical component arrangement component.

2. A fully automatic arc detection device according to claim 1, characterized in that: It also includes a servo driver installed in the frame, the motor in the linear slide is a servo motor, and the servo driver controls the servo motor of the linear slide.

3. A fully automatic arc detection device according to claim 2, characterized in that: It also includes a crown spring female needle fixing block provided on the outer side of the left pole frame, and a crown spring female needle and a crown spring male needle which are mutually matched and plugged are provided in the crown spring female needle fixing block.

4. The fully automatic arc detection device according to claim 3 is characterized in that: A flange fixed on the mounting frame is provided on the fixing rod and located between the right pole cover and the mounting frame.

5. The fully automatic arc detection device according to claim 1, characterized in that: The invention also includes a temperature sensor for detecting the temperature in the rack and an axial flow fan unit for cooling the rack.

6. The fully automatic arc detection device according to claim 1, characterized in that: An insulating plate is also provided on the front side of the slider connecting plate, an assembly groove is provided on the front side of the slider connecting plate, and the insulating plate can be installed in the assembly groove. A positioning hole is provided on one side of the slider connecting plate, and the positioning hole extends into the insulating plate. A plunger pin is inserted into the positioning hole. Two installation grooves for installing the left pole frame and the mounting frame are provided on the front side of the insulating plate.

7. The fully automatic arc detection device according to claim 1, characterized in that: The oscilloscope is located above the control touch screen and is installed on the front of the rack. The DC analog power supply and the wiring terminals are located on the bottom surface of the rack. The electrical component arrangement member is vertically installed in the rack.

8. The fully automatic arc detection device according to claim 7, characterized in that: The frame is provided with side sealing plates on both sides, a top sealing plate on the top, a rear panel on the back, heat dissipation holes and a heat dissipation fan on the rear panel, and a transparent safety protection door for power-off protection is provided on the front of the frame, and the transparent safety protection door protects the arc drawing component.

9. The fully automatic arc detection device according to claim 1, characterized in that: The host computer is installed outside the frame through a rotatable display bracket.

10. A detection method for a fully automatic arc detection device according to any one of claims 1 to 9, characterized in that: The following steps are included: F1. Power on the equipment and host computer, turn on the circuit switches in the equipment, and close the transparent safety protection door; F2, select manual mode and automatic mode; F3, select manual mode, open the host computer and select the test mode on the control touch screen or host computer according to the type of product to be tested, control the circuit switching of the electrical components and network simulation, and set the arc drawing component speed and distance option parameters; F4. Insert the product connection line into the terminal block, set the power mode, and start the test; F5, start the arc test, then the arc assembly starts, the telescopic movement of the electric cylinder drives the right pole cover and the left pole ring from contact to separation to generate an arc; at the same time, the oscilloscope runs, reads the waveform, displays the current and voltage, and the test ends; F6, select automatic mode; F7, automatic mode of the host computer, select the test mode and test times according to the product type; F8. Then the arc drawing assembly is started, and the telescopic movement of the electric cylinder drives the right pole cover and the left pole ring from contact to separation to generate an arc. At the same time, the oscilloscope runs, reads the waveform, displays the current and voltage, and the test ends.

Images