A method for preventing incorrect connections and a fault monitoring method for a flexible voltage control device.

Abstract

This invention relates to a method for preventing incorrect connections and a fault monitoring method for a flexible voltage management device. The method comprises the following steps: S1: Collecting line data and converting it into line topology data; S2: Converting the line topology data using an A / D conversion module and inputting it to a control processing unit; S3: Determining if the temperature signal is greater than a temperature reference value; if so, controlling the alarm unit to issue an alarm and controlling the display unit to display a high temperature alarm; S4: Determining if the difference between the voltage at the beginning and the voltage at the end is greater than a voltage difference reference value; if so, controlling the alarm unit to issue an alarm and controlling the display unit to display a voltage difference abnormality alarm; S5: Determining if the current is greater than a current reference value; if so, controlling the alarm unit to issue an alarm and controlling the display unit to display a current abnormality alarm; S6: When all conditions are determined to be abnormal, the background monitoring system drives the anti-misconnection structure to disconnect, thus preventing incorrect connections in the distribution box.

Description

Technical Field

[0001] This invention relates to a method for preventing incorrect connections and a fault monitoring method for a flexible voltage management device, belonging to the field of distribution box technology. Background Technology

[0002] Flexible voltage regulation is a power system management technology aimed at achieving dynamic control and dispatch of grid voltage to improve grid stability, reliability, and efficiency. With the continuous increase in distributed energy resources, such as solar photovoltaic and wind power systems, the power grid faces even greater challenges.

[0003] A distribution box is a low-voltage power distribution device that assembles switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment in a closed or semi-closed metal cabinet or panel according to electrical wiring requirements. Existing patent CN215645626U provides a distribution box with an anti-misconnection structure, including a distribution box body. The outer wall of the distribution box body has multiple heat dissipation holes evenly distributed to dissipate heat from the electrical components inside the distribution box body, preventing overheating and damage. Multiple mounting plates are located inside the distribution box body. Each wire passes through a wire hole on a slider, maintaining a certain distance between each wire to prevent tangling. However, this method still cannot promptly prevent misconnections; it only avoids wire tangling, thus addressing the aforementioned problems. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention provides a method for preventing incorrect wiring and a fault monitoring method for a flexible voltage management device, which can prevent incorrect wiring in the distribution box.

[0005] The technical solution of the present invention is as follows:

[0006] A method for preventing incorrect connection in a flexible voltage regulation device is disclosed. The method employs an anti-misconnection structure to prevent incorrect connection. The flexible voltage regulation device includes a distribution box body. Several wiring units are arranged inside the distribution box. Each wiring unit includes two support frames, and a socket assembly is arranged between the two support frames. The socket assembly includes an interface and a push frame. Two drive racks are symmetrically welded to the tops of the two vertical support rods of the push frame. The rear ends of the two drive racks are connected to the front end of the interface via springs. The front end of the interface is rotatably connected to a vertically arranged connecting rod via two fixed rods. Two drive gears are provided at the lower ends of the two connecting rods, meshing with each other. The two drive gears mesh with the two drive racks. The anti-misconnection structure is located at the top of the connecting rods. Temperature sensors, voltage transformers, and current transformers are installed on each interface, and temperature sensors, voltage transformers, and current transformers are installed in the wiring of each socket.

[0007] S1: Collect line data and convert the line data information into line topology map data;

[0008] S2: The line topology map data is converted by the A / D conversion module and then sent to the control processing unit;

[0009] S3: Determine whether the temperature signal is greater than the temperature reference value. If so, control the alarm unit to issue an alarm and control the display unit to display a high temperature alarm.

[0010] S4: Determine whether the voltage difference between the first-end voltage and the last-end voltage is greater than the voltage difference reference value. If so, control the alarm unit to issue an alarm and control the display unit to display the voltage difference abnormality alarm.

[0011] S5: Determine whether the current is greater than the current reference value. If so, control the alarm unit to issue an alarm and control the display unit to display the current abnormality alarm.

[0012] S6: Judgment conditions include a safe value of 40mA / s for line current data, a safe value of 30V for line voltage data, and a safe value of 45℃ to 55℃ for line temperature data; when all conditions are judged to be abnormal, the anti-misconnection structure is driven by the background monitoring system to disconnect the connection.

[0013] The anti-misconnection structure includes a first bevel gear disposed on the top of one of the connecting rods, a vertical panel disposed on the top of the interface, a connecting shaft horizontally opened on the side wall of the vertical panel, a second bevel gear fixedly disposed on the connecting shaft, the first bevel gear and the second bevel gear meshing with each other; an L-shaped plate fixedly disposed on the connecting shaft, a connecting buckle disposed on the L-shaped plate, a connecting slot disposed on the top of the interface, the connecting buckle being rotated into the connecting slot by the L-shaped plate for stable connection.

[0014] The fixed rod is equipped with an electric push rod inside, and the front end of the interface is provided with an inner groove. The inner groove is connected to the inside of the fixed rod. The output end of the electric push rod pushes the surface of the connecting buckle to disengage the connecting buckle from the connecting slot.

[0015] The electric push rod is connected to the background monitoring system.

[0016] The wiring unit further includes a wire-finding device; the two side walls of the interface are horizontally provided with first moving grooves, and the interior of each of the two first moving grooves is engaged and slidably connected with a first moving block; the wire-finding device includes an upper fixed plate and a lower fixed plate, the lower fixed plate is fixed between the two first moving blocks, and the two side walls of the lower fixed plate are vertically provided with second moving grooves; the outer walls of the two sides of the upper fixed plate are provided with second moving blocks, and the second moving blocks are engaged and slidably connected in the second moving grooves; the surfaces of the lower fixed plate and the upper fixed plate are symmetrically provided with fixing grooves, and several sets of fixing grooves correspond to the interface.

[0017] The fixed groove is a semi-circular groove, and ball bearings are installed inside the fixed groove.

[0018] Among them, the inner walls of the two support frames facing each other are horizontally provided with third moving grooves, and the interiors of the two third moving grooves are engaged and slidably connected with third moving blocks, and the two third moving blocks are respectively set on the two outer walls of the interface.

[0019] The push frame has a fourth moving block that is slidably connected to the first moving groove on both sides.

[0020] The process of converting information into line topology data involves forming a wireless sensor network using wireless nodes consisting of current transformers, voltage sensors, and temperature sensors. This network acquires the line topology map using information including line name, equipment model, installation location, and connection method. The connection points of the lines are used as nodes in the line topology map, which is then converted into line topology map data. During the conversion process, an OCR image conversion tool is used to convert the text and symbols in the line topology map into vector images. The data acquisition module's API interface is then used to wirelessly connect the sensor devices.

[0021] The data verification and normalization process includes checking for errors in line current, line voltage, line temperature, and line topology data based on a list created from a temporary data center. When verifying line current, line voltage, and line temperature data, if the data exceeds the sensor's measurement range, the data is considered abnormal; if the data is within the sensor's measurement range, the data is considered normal. When verifying line topology data, if errors or inconsistencies exist, the line topology data is corrected by filling missing values ​​with pre-defined data items. If no errors or inconsistencies exist, the line current, line voltage, line temperature, and line topology data are constrained using minimum-maximum normalization and mapped to the same scale, as shown below:

[0022]

[0023] Z represents the processed line temperature data, line current data, line voltage data, and line topology data; x represents the initial line current data, line voltage data, line temperature data, and line topology data. min x represents the minimum values ​​of initial line current data, line voltage data, line temperature data, and line topology data. max This represents the maximum values ​​of the initial line current data, line voltage data, line temperature data, and line topology data.

[0024] The present invention has the following beneficial effects:

[0025] This invention, by setting up a socket assembly, through the movable connection between the interface and the push frame, and by setting up an anti-misconnection structure, when a misconnection is detected, the connection is detected and judged, and the background monitoring system can push the connection buckle with an electric push rod to disengage the connection buckle from the connection slot, thereby driving the push frame away from the interface. As the push frame moves away from the interface, the push frame will drive the connector away from the interface at the same time, thus disconnecting the interface and the connector and avoiding the risks caused by misconnection.

[0026] Meanwhile, by setting up upper and lower fixing plates and designing corresponding fixing grooves and interfaces, this invention avoids cables from getting tangled together when problems occur, thereby classifying and isolating each line to prevent tangling. Its overall structure is simple and reasonable, highly practical, and easy to promote and apply. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the interface structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the upper fixing plate structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the lower fixing plate structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the installation structure of the upper and lower fixing plates of the present invention;

[0032] Figure 6 This is a schematic diagram of the interface, push frame, and line-finding structure of the present invention;

[0033] Figure 7 This is a half-sectional view of the mating of the first and second bevel gears of the present invention;

[0034] Figure 8 This is a schematic diagram of the connecting buckle structure of the present invention;

[0035] Figure 9 This is a schematic diagram of the pusher frame structure of the present invention.

[0036] The reference numerals in the figure are as follows:

[0037] 1. Support frame; 2. Interface; 3. First bevel gear; 4. First moving block; 11. Third moving block; 21. Push frame; 22. Spring; 23. Fixing rod; 24. Drive rack; 25. Drive gear; 26. Vertical panel; 27. First moving groove; 28. Connecting rod; 261. Connecting shaft; 262. L-shaped plate; 263. Connecting buckle; 264. Connecting slot; 31. Second bevel gear; 41. Upper fixing plate; 42. Lower fixing plate; 43. Second moving groove; 44. Second moving block; 45. Fixing groove. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0039] Please see Figures 1 to 9 The invention provides a technical solution:

[0040] A method for preventing incorrect connection of a flexible voltage management device is disclosed. The method employs an anti-misconnection structure to prevent incorrect connection. The flexible voltage management device includes a distribution box body, and the distribution box is equipped with several sets of wiring units. The remaining structure inside the distribution box is not described in this application, but is the same as that of the distribution box in the prior art.

[0041] The wiring unit includes two support frames 1, and a socket assembly is provided between the two support frames 1 for the insertion of connectors;

[0042] The plug assembly includes an interface 2 and a push frame 21. Two drive racks 24 are symmetrically welded to the top of the two vertical support rods of the push frame 21. The rear ends of the two drive racks 24 are connected to the front end of the interface 2 through springs 22. By pushing the front end of the push frame 21 to make the push frame 21 close to the interface 2, a complete plug interface can be formed. That is, when the plug is inserted, the plug will drive the push frame 21 to move toward the interface 2. Then, the push frame 21 is fixed to the interface 2 through the anti-misconnection structure, thus completing the conventional plug-in.

[0043] The front end of interface 2 is rotatably connected to a vertically arranged connecting rod 28 via two fixed rods 23. The lower ends of the two connecting rods 28 are provided with two meshing drive gears 25, which mesh with two drive racks 24. An anti-misconnection structure is located at the top of the connecting rods 28. Specifically, when the plug is inserted into the push frame 21, it pushes the push frame 21 towards interface 2. This movement of the push frame 21 drives the two drive gears 25 to rotate, which in turn causes the connecting rods 28 to operate the anti-misconnection structure at the top. The anti-misconnection structure ensures that the push frame 21 and the interface 2 are properly connected. Interface 2 is fixed, and the anti-misconnection structure also has the function of detaching the push frame 21 from interface 2. When the push frame 21 is detached from interface 2, the push frame 21 moves away from the front end of interface 2 due to the action of spring 22, which can drive the connector to detach from interface 2, thus realizing the connection between interface 2 and connector; each interface 2 is equipped with a temperature sensor, voltage transformer and current transformer, and each socket circuit is equipped with a temperature sensor, voltage transformer and current transformer; the temperature sensor, voltage transformer and current transformer are used to measure the circuit current, voltage and temperature values ​​for detection;

[0044] S1: Collect line data and convert the line data information into line topology map data;

[0045] S2: The line topology map data is converted by the A / D conversion module and then sent to the control processing unit;

[0046] S3: Determine whether the temperature signal is greater than the temperature reference value. If so, control the alarm unit to issue an alarm and control the display unit to display a high temperature alarm.

[0047] S4: Determine whether the voltage difference between the first-end voltage and the last-end voltage is greater than the voltage difference reference value. If so, control the alarm unit to issue an alarm and control the display unit to display the voltage difference abnormality alarm.

[0048] S5: Determine whether the current is greater than the current reference value. If so, control the alarm unit to issue an alarm and control the display unit to display the current abnormality alarm.

[0049] S6: Judgment conditions include a safe value of 40mA / s for line current data, a safe value of 30V for line voltage data, and a safe value of 45℃ to 55℃ for line temperature data; when all conditions are judged to be abnormal, the anti-misconnection structure is driven by the background monitoring system to disconnect the connection.

[0050] The electric push rod is connected to the background monitoring system. By judging the situation, the background monitoring system can drive the electric push rod to achieve disconnection.

[0051] The anti-misconnection structure includes a first bevel gear 3 disposed on the top of one of the connecting rods 28, a vertical panel 26 disposed on the top of the interface 2, a connecting shaft 261 horizontally opened on the side wall of the vertical panel 26, a second bevel gear 31 fixedly disposed on the connecting shaft 261, the first bevel gear 3 and the second bevel gear 31 meshing with each other; an L-shaped plate 262 fixedly disposed on the connecting shaft 261, a connecting buckle 263 disposed on the L-shaped plate 262, a connecting slot 264 disposed on the top of the interface 2, the connecting buckle 263 being rotated into the connecting slot 264 by the L-shaped plate 262 for stable connection.

[0052] Specifically, when the push frame 21 moves toward the interface 2, the drive gear 25 rotates forward, causing the first bevel gear 3 to rotate in the same direction. Then, due to meshing, the second bevel gear 31 causes the L-shaped plate 262 to rotate toward the top of the interface 2. Therefore, the connecting buckle 263 will rotate and snap into the connecting slot 264, thus locking the push frame 21 and the interface 2.

[0053] An electric push rod is provided inside the fixing rod 23, and an inner groove is provided at the front end of the interface 2. The inner groove communicates with the inside of the fixing rod 23. The output end of the electric push rod pushes the surface of the connecting buckle 263 to make the connecting buckle 263 disengage from the connecting slot 264.

[0054] Specifically, when a misconnection is detected through observation by staff, the electric push rod can be driven to push the connecting clip 263. Since the front end of the connecting clip 263 has a protrusion, and the connecting clip 263 is fastened to the inside of the connecting slot 264 through the protrusion, the protrusion is disengaged from the connecting slot 264 under the push of the electric push rod. Then, due to the action of the spring 22, the entire anti-misconnection device is reset, completing the disengagement of the joint and avoiding further damage caused by misconnection.

[0055] Incorrect wiring in the distribution box can lead to short circuits, potentially causing fires. Environmental factors such as low temperatures, high temperatures, humidity, and corrosion can damage the insulation of wires, causing wire splitting, plug oxidation, and poor contact. This can result in damage to electrical appliances or even electric shock. Furthermore, improper wiring can cause poor contact, preventing electrical equipment from functioning properly and leading to work stoppages and production interruptions. Prolonged operation of electrical equipment can also cause overheating and other safety hazards. Therefore, by monitoring and connecting the electric actuator to a backend monitoring system, overall automated operation can be achieved.

[0056] The process of converting information into line topology map data involves forming a wireless sensor network using wireless nodes consisting of current transformers, voltage sensors, and temperature sensors. This network acquires the line topology map using information including line name, equipment model, installation location, and connection method. The connection points of the lines are used as nodes in the line topology map, which is then converted into line topology map data. During the conversion process, an OCR image conversion tool is used to convert the text and symbols in the line topology map into vector images. The data acquisition module's API interface is then used to wirelessly connect to the sensor devices.

[0057] The data verification and normalization process includes checking for errors in line current, line voltage, line temperature, and line topology data based on a list created from a temporary data center. When verifying line current, line voltage, and line temperature data, if the data exceeds the sensor's measurement range, the data is considered abnormal; if the data is within the sensor's measurement range, the data is considered normal. When verifying line topology data, if errors or inconsistencies exist, the line topology data is corrected by filling missing values ​​with pre-defined data items. If no errors or inconsistencies exist, the line current, line voltage, line temperature, and line topology data are constrained using minimum-maximum normalization and mapped to the same scale, as shown below:

[0058]

[0059] Z represents the processed line temperature data, line current data, line voltage data, and line topology data; x represents the initial line current data, line voltage data, line temperature data, and line topology data. min x represents the minimum values ​​of initial line current data, line voltage data, line temperature data, and line topology data. max This represents the maximum values ​​of the initial line current data, line voltage data, line temperature data, and line topology data.

[0060] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for preventing incorrect connection of a flexible voltage regulation device, comprising an anti-misconnection structure, wherein the flexible voltage regulation device includes a distribution box body, and the distribution box contains several sets of wiring units, characterized in that: The wiring unit includes two support frames (1), and a socket assembly is provided between the two support frames (1). The socket assembly includes an interface (2) and a push frame (21). Two drive racks (24) are symmetrically welded to the top of the two vertical support rods of the push frame (21). The rear ends of the two drive racks (24) are connected to the front end of the interface (2) through springs (22). The front end of the interface (2) is also rotatably connected to a vertically arranged connecting rod (28) through two fixed rods (23). The lower end of each connecting rod (28) is provided with two drive gears (25) that mesh with each other. The two drive gears (25) mesh with two drive racks (24) respectively. The anti-misconnection structure is provided on the top of the connecting rod (28). Temperature sensors, voltage transformers and current transformers are provided on each interface (2). Temperature sensors, voltage transformers and current transformers are provided in the circuit of each socket. The anti-misconnection structure includes a first bevel gear provided on the top of one of the connecting rods (28). (3) A vertical panel (26) is provided on the top of the interface (2). A connecting shaft (261) is horizontally opened on the side wall of the vertical panel (26). A second bevel gear (31) is fixedly provided on the connecting shaft (261). The first bevel gear (3) and the second bevel gear (31) mesh with each other. An L-shaped plate (262) is fixedly provided on the connecting shaft (261). A connecting buckle (263) is provided on the L-shaped plate (262). A connecting slot is provided on the top of the interface (2). 264), the connecting buckle (263) is rotated into the connecting slot (264) by the L-shaped plate (262) for stable connection; the fixing rod (23) is provided with an electric push rod inside, the front end of the interface (2) is provided with an inner groove, the inner groove is connected to the inside of the fixing rod (23), the output end of the electric push rod pushes the surface of the connecting buckle (263) to make the connecting buckle (263) disengage from the connecting slot (264), and the electric push rod is connected to the background monitoring system. S1: Collect line data and convert the line data information into line topology map data; S2: The line topology map data is converted by the A / D conversion module and then sent to the control processing unit; S3: Determine whether the temperature signal is greater than the temperature reference value. If so, control the alarm unit to issue an alarm and control the display unit to display the high temperature alarm. S4: Determine whether the voltage difference between the first end and the last end is greater than the voltage difference reference value. If so, control the alarm unit to issue an alarm and control the display unit to display the voltage difference alarm. S5: Determine if the current is greater than the current reference value. If so, control the alarm unit to issue an alarm and control the display unit to display the current abnormality alarm. S6: Judgment conditions include a safe value of 40mA / s for line current data, a safe value of 30V for line voltage data, and a safe value of 45℃ to 55℃ for line temperature data; when all conditions are judged to be abnormal, the anti-misconnection structure is driven by the background monitoring system to disconnect the connection.

2. The method for preventing incorrect connection of a flexible voltage management device as described in claim 1, characterized in that: The wiring unit also includes a wire finding device; the two side walls of the interface (2) are horizontally provided with first moving grooves (27), and the two first moving grooves (27) are slidably connected with first moving blocks (4). The wire finding device includes an upper fixed plate (41) and a lower fixed plate (42). The lower fixed plate (42) is fixed between the two first moving blocks (4). The two side walls of the lower fixed plate (42) are vertically provided with second moving grooves (43). The outer walls of the two sides of the upper fixed plate (41) are provided with second moving blocks (44), and the second moving blocks (44) are slidably connected in the second moving grooves (43). The surfaces of the lower fixed plate (42) and the upper fixed plate (41) are symmetrically provided with fixed wire grooves (45), and several sets of fixed wire grooves (45) correspond to the interface (2).

3. The method for preventing incorrect connection of a flexible voltage management device as described in claim 2, characterized in that: The fixed groove (45) is a semi-circular groove, and ball bearings are installed inside the fixed groove (45).

4. The method for preventing incorrect connection of a flexible voltage management device as described in claim 1, characterized in that: The inner walls of the two support frames (1) facing each other are provided with a third moving groove, and the two third moving grooves are each fitted with a third moving block (11). The two third moving blocks (11) are respectively set on the two outer walls of the interface (2).

5. The method for preventing incorrect connection of a flexible voltage management device as described in claim 2, characterized in that: The push frame (21) has a fourth moving block that is slidably connected to the first moving groove (27) on both sides.

6. A misconnection prevention structure implemented using the misconnection prevention method of the flexible voltage management device as described in claim 1, characterized in that: The process of converting information into line topology data involves forming a wireless sensor network using wireless nodes consisting of current transformers, voltage sensors, and temperature sensors. This network acquires the line topology map by providing information including line name, equipment model, installation location, and connection method. The connection points of the lines are used as nodes in the line topology map, which is then converted into line topology data. During the conversion process, an OCR image conversion tool is used to convert the text and symbols in the line topology map into vector images. These images are then wirelessly connected to the sensor devices via the API interface of the data acquisition module. The data verification and normalization process includes checking for errors in line current data, line voltage data, line temperature data, and line topology data based on the creation list of temporary data centers. When checking line current data, line voltage data, and line temperature data, if the data exceeds the sensor's measurement range, the data is abnormal; if the data does not exceed the sensor's measurement range, the data is normal. When verifying the line topology map data, if errors or inconsistencies are found, the data is corrected by filling in missing values ​​with pre-defined data items. If no errors or inconsistencies are found, the line current, line voltage, line temperature, and line topology map data are constrained using min-max normalization and mapped to the same scale, as shown below: This represents the processed line temperature data, line current data, line voltage data, and line topology data. This represents the initial line current data, line voltage data, line temperature data, and line topology data. This represents the minimum values ​​of the initial line current data, line voltage data, line temperature data, and line topology data. This represents the maximum values ​​of the initial line current data, line voltage data, line temperature data, and line topology data.

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