A converged terminal multi-interface conductive redundancy connection device

Abstract

This invention discloses a multi-interface conductive redundancy connection device for a converged terminal, belonging to the field of conductive connections for converged terminals. The device includes a terminal housing, a main pin, and a secondary pin, both located on a protector. A main copper busbar is connected to the main pin, and a secondary copper busbar is connected to the secondary pin. A conductive rod is slidably disposed within the protector. A main conductive terminal, cooperating with the conductive rod, is disposed within the protector. A secondary conductive terminal, cooperating with the secondary copper busbar, is disposed within the secondary pin. A multimeter is mounted on a connection frame. This invention utilizes a secondary copper busbar for emergency power supply, preventing operational accidents such as tourist congestion and equipment downtime caused by power outages. This provides a buffer time for maintenance, eliminating the need for emergency repairs and allowing maintenance to be performed during off-peak hours, reducing repair costs and operational impact.

Description

Technical Field

[0001] This invention relates to the field of conductive connection technology for converged terminals, and in particular to a multi-interface conductive redundancy connection device for converged terminals. Background Technology

[0002] In power distribution scenarios, the converged terminal, also known as the "Power Distribution IoT Converged Terminal," is the intelligent core hub of the power distribution system. On one hand, it connects to devices such as smart circuit breakers and smart power protectors in the distribution box to collect data such as voltage, current, and fault signals; on the other hand, it connects to the cloud platform through a communication network and has local computing and edge control capabilities.

[0003] To meet the rapidly developing tourism industry, including scenic spots and homestays, the demand for power supply in many scenic areas has increased significantly in recent years. However, the copper busbars on the integrated terminals are subject to alternating vibration stress over long periods of use, which can lead to fatigue fracture. In addition, many scenic areas are also subject to salt spray corrosion, where chloride ions in the salt spray corrode the surface of the copper busbars, causing the material to become brittle and reducing its mechanical strength, thus creating a hidden danger for fracture. A broken copper busbar will directly cut off the circuit, causing power outages to the integrated terminals, protectors, and other equipment, and the entire power distribution system to lose its monitoring and control capabilities. The core load of the scenic area will be interrupted, affecting operations and even causing safety hazards. In view of this, this invention is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the background art, and to propose a multi-interface conductive redundancy connection device for integrated terminals.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-interface conductive redundancy connection device for a converged terminal includes a terminal housing, a connection frame inside the terminal housing, two protectors and a circuit breaker mounted on the connection frame, and further includes:

[0007] Both the main pin and the auxiliary pin are located on the protector, and the main pin is connected to a main copper busbar, while the auxiliary pin is connected to an auxiliary copper busbar.

[0008] The conductive rod is slidably mounted inside the protector.

[0009] The main conductive terminal, which cooperates with the conductive rod, is located inside the protector. When the main copper busbar is tilted toward the side of the terminal box opening, the main copper busbar abuts against the conductive rod and pushes the conductive rod to move until it is in contact with the main conductive terminal.

[0010] The secondary conductive terminal, which mates with the secondary copper busbar, is located inside the secondary plug.

[0011] The multimeter is mounted on the connector.

[0012] Preferably, the protector is provided with a first sliding groove and a second sliding groove that communicate with the main pin. The conductive rod is slidably connected in the first sliding groove, and a fixing plate is fixedly installed in the first sliding groove. A support block is connected to the fixing plate through an elastic element, and the main conductive terminal is installed on the support block.

[0013] Furthermore, a U-shaped plate is slidably connected inside the second sliding groove, a first pressure switch is provided on the inner wall of the U-shaped plate, a linkage rod is slidably connected to the U-shaped plate, a push plate is provided on one end of the linkage rod outside the second sliding groove, and the end of the linkage rod away from the push plate cooperates with the first pressure switch.

[0014] Furthermore, the protector is threaded with a threaded rod, which is rotatably connected to the U-shaped plate, and the linkage rod and conductive rod are respectively arranged on both sides of the main copper busbar.

[0015] Furthermore, a pressure plate is slidably connected inside the main pin via a connecting rod, and a pressure block is provided on the pressure plate. A second pressure switch corresponding to the pressure block is provided on the inner wall of the main pin.

[0016] Furthermore, a square rod is rotatably connected inside the main pin, and a limiting frame is fixedly installed on the square rod. The bottom of the main copper busbar is provided with a U-shaped groove corresponding to the square rod, and the bottom of the main copper busbar is inserted into the limiting frame. The protector is also provided with a groove, and a rotating shaft is fixedly connected to both ends of the square rod. A large gear is provided on the rotating shaft, and a first small gear and a second small gear are rotatably connected in the groove. The first small gear meshes with the large gear, and the bottom and top of the second small gear are respectively meshed with a first rack plate and a second rack plate. A first shielding plate and a second shielding plate that cooperate with the main copper busbar are slidably connected on the outer wall of the protector. The first rack plate is fixedly connected to the first shielding plate, and the second rack plate is fixedly connected to the second shielding plate. Both the first rack plate and the second rack plate are slidably connected in the groove.

[0017] Furthermore, the inner wall of the secondary pin is provided with an electric telescopic rod, and the first pressure switch and the second pressure switch are both electrically connected to the electric telescopic rod through wires. The output end of the electric telescopic rod is connected to a trapezoidal block, the secondary copper busbar is provided with a trapezoidal groove corresponding to the trapezoidal block, and the inner wall of the secondary pin is provided with a spring piece that abuts against the outer wall of the secondary copper busbar.

[0018] Preferably, a first connecting copper busbar is connected to the main copper busbar, and a second connecting copper busbar is connected to the auxiliary copper busbar. The first connecting copper busbar is provided with an elongated groove, and an adjusting rod inserted into the elongated groove is provided on the inner wall of the terminal box. The adjusting rod is provided with a nut that abuts against the first connecting copper busbar.

[0019] Preferably, the voltage detection terminal of the multimeter is electrically connected to the voltage sampling terminal of the protector, and the current detection terminal of the multimeter is electrically connected to the current sampling terminal of the protector; the multimeter is used to determine whether there is an abnormal connection in the copper busbar.

[0020] Furthermore, the multimeter is configured as follows:

[0021] The current and voltage data output by the protector are collected and stored at preset time intervals.

[0022] Computation based on stored sets of data:

[0023] Current reference value ,

[0024] Voltage reference value ,

[0025] Current relative fluctuation coefficient ,

[0026] voltage relative fluctuation coefficient ;

[0027] Single set of current data deviation rate ;

[0028] Where n represents the total number of sets of current or voltage data collected. This represents the current data collected in the i-th group. This represents the voltage data collected in the i-th group. The standard deviation of the current. The standard deviation of voltage;

[0029] When the relative fluctuation coefficient of the current is greater than the preset threshold of the current, or the relative fluctuation coefficient of the voltage is greater than the preset threshold of the voltage, or the deviation rate of a single set of data is greater than the preset threshold of the data, it is determined that there is a connection abnormality in the copper busbar.

[0030] Compared with the prior art, the present invention provides a multi-interface conductive redundancy connection device for integrated terminals, which has the following advantages:

[0031] 1. The multi-interface conductive redundancy connection device of this integrated terminal, during installation, inserts the main copper busbar into the main pin and the auxiliary copper busbar into the auxiliary pin. The auxiliary copper busbar can provide emergency power supply, which can prevent operational accidents such as tourist congestion and equipment shutdown caused by power outage. At the same time, the backup operation of the auxiliary copper busbar can buy buffer time for operation and maintenance, eliminating the need for emergency repairs. Damaged main copper busbars can be replaced during off-peak hours, such as at night, reducing repair costs and impact on operations.

[0032] 2. During installation, the multi-interface conductive redundancy connection device of the fusion terminal controls the main copper busbar to push the conductive rod to move, so that the conductive rod comes into contact with the main conductive terminal and completes the electrical connection. If the main copper busbar is damaged or broken, the tilted main copper busbar can automatically reset. At this time, it will control the secondary copper busbar to achieve electrical connection with the secondary conductive terminal to facilitate the emergency operation of the secondary circuit.

[0033] 3. The multi-interface conductive redundancy connection device of this integrated terminal will press the first pressure switch and the second pressure switch when the main copper busbar breaks. When one of them is pressed, a signal will be sent to control the electric telescopic rod to work, so that the trapezoidal block moves out and cooperates with the trapezoidal slot, realizing a tight connection between the secondary copper busbar and the secondary conductive terminal, so that the secondary path can be used. The operation of the secondary path can buy buffer time for operation and maintenance, eliminating the need for emergency repairs, reducing repair costs and reducing the adverse impact on the overall operation of the power grid.

[0034] 4. The multi-interface conductive redundancy connection device of the fusion terminal can block the opening at the main plug through the first and second shielding plates, preventing dust and impurities from entering, and further improving the performance of the main copper busbar.

[0035] 5. The multi-interface conductive redundancy connection device of this fusion terminal can be used with a multimeter to determine whether there is a connection abnormality in the copper busbar. If the relative current fluctuation coefficient is greater than the current preset threshold, or the relative voltage fluctuation coefficient is greater than the voltage preset threshold, or the deviation rate of a single set of data is greater than the data preset threshold, then it is determined that there is a connection abnormality in the copper busbar. Since there is a connection path for the auxiliary copper busbar for emergency use, staff can replace and repair it during off-peak hours, such as at night, reducing emergency repair costs and the impact on operations. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a multi-interface conductive redundancy connection device for a fusion terminal proposed in this invention;

[0037] Figure 2 This is a front view of a multi-interface conductive redundancy connection device for a fusion terminal proposed in this invention;

[0038] Figure 3 This is a schematic diagram of the internal structure of the terminal housing in a multi-interface conductive redundancy connection device for a fusion terminal proposed in this invention.

[0039] Figure 4 This invention proposes a multi-interface conductive redundancy connection device for a fusion terminal. Figure 3 An enlarged schematic diagram of part A in the middle;

[0040] Figure 5 This is a cross-sectional view of a protector in a multi-interface conductive redundancy connection device for a fusion terminal proposed in this invention;

[0041] Figure 6 This invention proposes a multi-interface conductive redundancy connection device for a fusion terminal. Figure 5 Enlarged view of section B;

[0042] Figure 7 This is a partial cross-sectional view of the protector in a multi-interface conductive redundancy connection device for a fusion terminal proposed in this invention. Figure 1 ;

[0043] Figure 8 This is a partial cross-sectional view of the protector in a multi-interface conductive redundancy connection device for a fusion terminal proposed in this invention. Figure 2 ;

[0044] Figure 9 This is a schematic diagram of the structure of the square rod and the limiting frame in a multi-interface conductive redundancy connection device for a fusion terminal proposed in this invention.

[0045] In the diagram: 1. Terminal housing; 101. Connecting frame; 102. Protector; 103. Circuit breaker; 104. Multimeter; 2. Main pin; 201. Square rod; 202. Limiting frame; 203. Main copper busbar; 204. Rotating shaft; 205. First connecting copper busbar; 206. Adjusting rod; 207. Long slot; 208. Nut; 3. Secondary pin; 301. Spring; 302. Secondary conductive terminal; 303. Electric telescopic rod; 304. Trapezoidal block; 305. Secondary copper busbar; 306. Trapezoidal slot; 307. Secondary connecting copper busbar; 4. First sliding groove; 401. Fixing plate; 402. Support block; 403. Main conductive terminal; 404. Conductive rod; 5. Second sliding groove; 501. U-shaped plate; 502. First pressure switch; 503. Linkage rod; 504. Push plate; 505. Threaded rod; 6. Pressure plate; 601. Pressure block; 602. Second pressure switch; 7. Large gear; 701. First small gear; 702. Second small gear; 703. First rack plate; 704. Second rack plate; 705. First shielding plate; 706. Second shielding plate. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Example 1:

[0049] Reference Figures 1-9 A multi-interface conductive redundancy connection device for a fusion terminal includes a terminal housing 1, a connecting frame 101 inside the terminal housing 1, two protectors 102 and a circuit breaker 103 on the connecting frame 101, a main pin 2 and a secondary pin 3, both located on the protectors 102, with a main copper busbar 203 connected to the main pin 2 and a secondary copper busbar 305 connected to the secondary pin 3; a conductive rod 404 is slidably disposed inside the protector 102, and a main conductive terminal 403 cooperating with the conductive rod 404 and a secondary conductive terminal 302 cooperating with the secondary copper busbar 305 are also included. The main conductive terminal 403 is disposed inside the protector 102, and the secondary conductive terminal 302 is disposed inside the secondary pin 3. When the main copper busbar 203 is tilted toward the opening of the terminal housing 1, the main copper busbar 203 abuts against the conductive rod 404 and pushes the conductive rod 404 to move until it is in contact with the main conductive terminal 403. A multimeter 104 is disposed on the connecting frame 101.

[0050] In this embodiment, during installation, the protector 102 and the circuit breaker 103 are first installed on the connecting frame 101. The connection method between the protector 102 and the circuit breaker 103 can adopt the connection method in the prior art, and its function is the same as that in the prior art. The circuit breaker 103, as the core protection device for the on and off control of the main circuit, has short circuit, overload and leakage protection functions, and may also integrate intelligent opening and closing, remote control and other functions.

[0051] During installation, the main copper busbar 203 is inserted into the main pin 2, and the auxiliary copper busbar 305 is inserted into the auxiliary pin 3. Then, the main copper busbar 203 is rotated to tilt it, causing it to press against the conductive rod 404 and push the conductive rod 404 to move. This moves the other end of the conductive rod 404 until it is in contact with the main conductive terminal 403, completing the electrical connection between the main conductive terminal 403 and the main copper busbar 203. Normal operation is then possible. After the auxiliary copper busbar 305 is inserted, it does not require additional fixing. If the main copper busbar 203 breaks, the tilted main copper busbar 203 will automatically reset. At this time, the auxiliary copper busbar 305 will be fixed and limited through the steps described later, while simultaneously ensuring the auxiliary copper busbar... The auxiliary conductive terminal 302 inside the auxiliary plug 305 is connected to the main copper busbar 203 and the auxiliary copper busbar 305 to achieve electrical connection. The main copper busbar 203 and the auxiliary copper busbar 305 are also connected to other electrical components inside the terminal box 1 through the first connecting copper busbar 205 and the second connecting copper busbar 307, respectively. Thus, in this application, in the event of damage or breakage of the main copper busbar 203, the auxiliary copper busbar 305 can provide emergency power supply, which can prevent operational accidents such as tourist congestion and equipment shutdown caused by power outage. At the same time, the backup operation of the auxiliary copper busbar 305 can buy buffer time for operation and maintenance, without the need for emergency repair. The damaged main copper busbar 203 can be replaced during off-peak hours, such as at night, reducing repair costs and the impact on operation.

[0052] Example 2:

[0053] Reference Figure 5 and Figure 6 A multi-interface conductive redundancy connection device for a fusion terminal is basically the same as that in Embodiment 1. Furthermore, the protector 102 is provided with a first sliding groove 4 and a second sliding groove 5 that are connected to the main pin 2. The conductive rod 404 is slidably connected in the first sliding groove 4, and a fixing plate 401 is fixedly installed in the first sliding groove 4. A support block 402 is connected to the fixing plate 401 through an elastic element, and the main conductive terminal 403 is installed on the support block 402.

[0054] A square rod 201 is rotatably connected inside the main pin 2. A limit frame 202 is fixedly installed on the square rod 201. The bottom of the main copper busbar 203 is provided with a U-shaped groove corresponding to the square rod 201. The bottom of the main copper busbar 203 is inserted into the limit frame 202. The protector 102 is also provided with a groove. The two ends of the square rod 201 are also fixedly connected with a rotating shaft 204.

[0055] In this embodiment, when the main copper busbar 203 is installed, the U-shaped groove at the bottom of the main copper busbar 203 is inserted into the square rod 201, so that the square rod 201 is placed inside the U-shaped groove. At the same time, the main copper busbar 203 is inserted into the limiting frame 202. When the main copper busbar 203 rotates, it will drive the square rod 201 to rotate. At the same time, the main copper busbar 203 will press the conductive rod 404. At this time, the conductive rod 404 will slide into the first sliding groove 4, thereby abutting against the main conductive terminal 403 on the support block 402, thus completing the circuit connection. Furthermore, an elastic element is provided between the support block 402 and the fixing plate 401, which can generate a certain buffer under the squeezing action of the conductive rod 404, preventing the conductive rod 404 from damaging the main conductive terminal 403, and facilitating use.

[0056] Secondly, refer to Figure 6 A first spring is provided between the section of the conductive rod 404 placed inside the first sliding groove 4 and the inner wall of the first sliding groove 4. When the subsequent connection of the main copper busbar 203 breaks, the conductive rod 404 will automatically reset under the action of the elastic element between the fixing plate 401 and the support block 402, as well as under the action of the first spring, so that the main copper busbar 203 can be reset, thereby enabling the auxiliary copper busbar 305 to be connected. It should also be noted that a torsion spring can be provided on the rotating shaft 204 on the outer wall of the square rod 201. When the rotating shaft 204 rotates, the torsion spring will generate a torsional force, thereby assisting the main copper busbar 203 to automatically reset.

[0057] Reference Figure 5 and Figure 6 A U-shaped plate 501 is slidably connected inside the second sliding groove 5. A first pressure switch 502 is provided on the inner wall of the U-shaped plate 501. A linkage rod 503 is slidably connected on the U-shaped plate 501. A push plate 504 is provided on one end of the linkage rod 503 outside the second sliding groove 5. The end of the linkage rod 503 away from the push plate 504 cooperates with the first pressure switch 502.

[0058] The protector 102 is threaded with a threaded rod 505, which is rotatably connected to the U-shaped plate 501. The linkage rod 503 and the conductive rod 404 are respectively set on both sides of the main copper busbar 203.

[0059] In this embodiment, after the position of the main copper busbar 203 is fixed, the threaded rod 505 is rotated to make it threadedly connected to the housing of the protector 102, thereby driving the U-shaped plate 501 to move, so that the push plate 504 moves to abut against the other side of the main copper busbar 203. On the one hand, it can limit the main copper busbar 203, and on the other hand, it can better push the push plate 504 to move after the main copper busbar 203 automatically resets after breakage, thereby driving the linkage rod 503 to move. When the linkage rod 503 moves on the U-shaped plate 501, it will touch the first pressure switch 502, thereby causing the first pressure switch 502 to produce a pressing effect. At this time, the first pressure switch 502 will send a signal.

[0060] A pressure plate 6 is slidably connected inside the main pin 2 via a connecting rod. A pressure block 601 is provided on the pressure plate 6. A second pressure switch 602 corresponding to the pressure block 601 is provided on the inner wall of the main pin 2.

[0061] In this embodiment, when the main copper busbar 203 is reset, it will not only push the push plate 504 to move, causing the linkage rod 503 to press the first pressure switch 502, but also drive the bottom of the main copper busbar 203 to rotate the limit frame 202, thereby squeezing the pressure plate 6 to move, so that the pressure block 601 set on the outer wall of the pressure plate 6 presses the second pressure switch 602, at which time the first pressure switch 502 will send a signal.

[0062] It should be noted that, referring to Figure 6 A second spring is provided between the section of the linkage rod 503 inside the U-shaped plate 501 and the inner wall of the U-shaped plate 501. The second spring enables the linkage rod 503 and the push plate 504 to automatically reset. The pressure plate 6 is slidably connected to the protector 102 through a connecting rod, and a third spring is sleeved on the outer wall of the connecting rod. On the one hand, it can limit the pressure plate 6, and on the other hand, it can automatically reset the pressure plate 6 for easy reuse.

[0063] The inner wall of the auxiliary pin 3 is provided with an electric telescopic rod 303. The first pressure switch 502 and the second pressure switch 602 are both electrically connected to the electric telescopic rod 303 through wires. The output end of the electric telescopic rod 303 is connected to a trapezoidal block 304. The auxiliary copper busbar 305 is provided with a trapezoidal groove 306 corresponding to the trapezoidal block 304. The inner wall of the auxiliary pin 3 is provided with a spring piece 301 that abuts against the outer wall of the auxiliary copper busbar 305.

[0064] In this application, both the first pressure switch 502 and the second pressure switch 602 can be used with components from the prior art. Both the first pressure switch 502 and the second pressure switch 602 are electrically connected to the electric telescopic rod 303 via wires. When either the first pressure switch 502 or the second pressure switch 602 is compressed, it will send a signal, causing the electric telescopic rod 303 to operate and move the trapezoidal block 304 at its output end. After moving, the trapezoidal block 304 will insert into the trapezoidal slot 306 on the auxiliary copper busbar 305. Both block 304 and trapezoidal groove 306 are provided with mutually cooperating inclined surfaces. Therefore, during the continuous movement of trapezoidal block 304, the secondary copper busbar 305 will also move downward a certain distance, so that the bottom of the secondary copper busbar 305 is tightly abutted against the secondary conductive terminal 302, thereby realizing the connection of the secondary passage. This allows the secondary copper busbar 305 to work in case the main copper busbar 203 breaks or is damaged. In addition, multiple spring pieces 301 are provided in the secondary pin 3, which can achieve the initial positioning effect of the secondary copper busbar 305 when it is inserted.

[0065] Reference Figure 8 and Figure 9 A large gear 7 is provided on the rotating shaft 204. A first small gear 701 and a second small gear 702 are rotatably connected in the groove. The first small gear 701 meshes with the large gear 7. The bottom and top of the second small gear 702 are respectively meshed with a first rack plate 703 and a second rack plate 704. A first shielding plate 705 and a second shielding plate 706 that cooperate with the main copper busbar 203 are slidably connected on the outer wall of the protector 102. The first rack plate 703 is fixedly connected to the first shielding plate 705, and the second rack plate 704 is fixedly connected to the second shielding plate 706. The first rack plate 703 and the second rack plate 704 are both slidably connected in the groove.

[0066] In this embodiment, when the main copper busbar 203 rotates, it drives the square rod 201 to rotate, which in turn drives the rotating shaft 204 fixedly connected to the square rod 201 to rotate, thereby causing the large gear 7 to rotate. The large gear 7 then drives the first small gear 701 meshing with it to rotate, which in turn drives the second small gear 702 to rotate. Then, the second small gear 702 drives the first rack plate 703 and the second rack plate 704 meshing with it at both ends to move, thereby driving the first baffle plate 705 and the second baffle plate 706 to move, thereby sealing the main pin 2, preventing dust and other contaminants from entering, and improving the performance of the main pin 2.

[0067] Reference Figures 1-4The main copper busbar 203 is connected to the first connecting copper busbar 205, and the auxiliary copper busbar 305 is connected to the second connecting copper busbar 307. The first connecting copper busbar 205 is provided with a long groove 207. The inner wall of the terminal box 1 is provided with an adjusting rod 206 that is inserted into the long groove 207. The adjusting rod 206 is provided with a nut 208 that abuts against the first connecting copper busbar 205.

[0068] In this embodiment, the main copper busbar 203 is connected to other electrical components inside the terminal housing 1 through the first connecting copper busbar 205, and the auxiliary copper busbar 305 is connected to other electrical components inside the terminal housing 1 through the second connecting copper busbar 307. Tightening the nut 208 on the adjusting rod 206 causes the nut 208 to move, thereby synchronously driving the first connecting copper busbar 205 to move, which in turn drives the main copper busbar 203 to move, thus causing the main copper busbar 203 to tilt. It should be noted that the long groove 207 is set to be relatively long, which allows the adjusting rod 206 to move within the long groove 207 without jamming.

[0069] Example 3:

[0070] Reference Figures 1-2 A multi-interface conductive redundancy connection device for a fusion terminal is basically the same as that in Embodiment 2. Furthermore, the multimeter 104 is provided with a voltage detection terminal and a current detection terminal, and the protector 102 is provided with a voltage sampling terminal and a current sampling terminal. The voltage detection terminal of the multimeter 104 is electrically connected to the voltage sampling terminal of the protector 102, and the current detection terminal of the multimeter 104 is electrically connected to the current sampling terminal of the protector 102. The multimeter 104 is used to determine whether there is a connection abnormality in the copper busbar.

[0071] Furthermore, the multimeter 104 has a recording function, capable of recording and storing multiple sets of data. The multimeter 104 is configured as follows:

[0072] The current and voltage data output by the smart power meter are collected and stored at preset time intervals.

[0073] Computation based on stored sets of data:

[0074] Current reference value ,

[0075] Voltage reference value ,

[0076] Current relative fluctuation coefficient ,

[0077] voltage relative fluctuation coefficient ;

[0078] Single set of current data deviation rate

[0079] Where n represents the total number of sets of current or voltage data collected. This represents the current data collected in the i-th group. This represents the voltage data collected in the i-th group. The standard deviation of the current. The standard deviation of voltage;

[0080] If the relative fluctuation coefficient of current is greater than the preset threshold of current, or the relative fluctuation coefficient of voltage is greater than the preset threshold of voltage, or the deviation rate of a single set of data is greater than the preset threshold of data, it is determined that there is a connection abnormality in the copper busbar.

[0081] Specifically, before performing calculations on multiple sets of current and voltage data, data preprocessing is required to remove obviously erroneous data and values ​​that far exceed the range. In this application, based on the specific circumstances of the Qiyun Mountain scenic area project, the following thresholds are set: the current preset threshold is 3%, the voltage preset threshold is 2%, and the data preset threshold is 10%.

[0082] That is: the relative fluctuation coefficient of current And for more than two consecutive acquisition cycles or voltage relative fluctuation coefficient And the deviation rate of two or more consecutive acquisition cycles or a single set of current data If the copper busbar is found to be faulty, it indicates a connection problem, such as poor contact or breakage. In this case, staff will need to investigate and repair it.

[0083] Among them, obviously erroneous data refers to data such as a measured value of 0, which may have been obtained when the power was off; and values ​​far exceeding the range refer to data such as 500A appearing in a 100A circuit.

[0084] Secondly, if it is necessary to analyze whether the data is continuously rising or falling, such as when copper busbar corrosion causes increased resistance and a continuous decrease in current, then the slope of the linear trend can be calculated. Early identification of slowly deteriorating faults in copper busbars, among which,

[0085] linear trend slope ;

[0086] in, This represents the time sequence number of the i-th data set. Then it is the square of the time sequence number of the i-th data group.

[0087] If the current data is calculated to If the value is less than 0, it indicates that the current in the copper busbar is gradually decreasing. The corresponding problems with the copper busbar are usually: poor contact or increased corrosion. Oxidation and salt spray corrosion on the surface of the copper busbar will lead to increased contact resistance, and the current will naturally continue to decrease. Loose connection of the copper busbar. Long-term vibration will cause the bolts to loosen, reduce the contact area, increase the resistance, and the current will also gradually decrease.

[0088] If the current data is calculated to A value greater than 0 indicates that the current in the copper busbar is gradually increasing. The corresponding copper busbar problems are usually local overheating and aging. Aging leads to a decrease in insulation performance, which may cause a slight short circuit and cause the current to continue to rise. Abnormal equipment on the load side of the copper busbar can also cause the load to increase, leading to an increase in current. Long-term high current will accelerate the thermal fatigue and breakage risk of the copper busbar.

[0089] If the voltage data is calculated to A value less than 0 indicates that the voltage of the copper busbar is gradually decreasing. This is mainly due to excessive contact resistance of the copper busbar. Poor contact or corrosion of the copper busbar can lead to an increase in voltage drop and a continuous decrease in the terminal voltage, which can eventually cause undervoltage faults in the equipment.

[0090] If the voltage data is calculated to A value greater than 0 indicates an abnormally high voltage on the grid side, which indirectly increases the insulation load on the copper busbar. Long-term high voltage will accelerate the aging of the copper busbar insulation and increase the risk of electrical breakdown.

[0091] Only when When the value is approximately 0, it represents the mainstream state, which is normal. This indicates that the load on the scenic area does not fluctuate drastically, and the voltage or current will fluctuate slightly around the baseline value, with a trend slope close to 0. ≈0 is the norm for most of the time.

[0092] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A kind of fusion terminal multi-interface conductive redundant connection device, including terminal box (1), connection frame (101) is equipped in the terminal box (1), two protectors (102) and circuit breaker (103) are equipped on the connection frame (101), it is characterized by, Also include: The main bolt (2) and the secondary bolt (3) are all opened in the protector (102), and the main copper bar (203) is connected in the main bolt (2), and the secondary copper bar (305) is connected in the secondary bolt (3); The conductive rod (404) is slidably arranged in the protector (102); The main conductive terminal (403) matched with the conductive rod (404) is arranged in the protector (102), when the main copper bar (203) is inclined to the side of the terminal box (1) opening, the main copper bar (203) is abutted with the conductive rod (404) and pushes the conductive rod (404) to move to the main conductive terminal (403); The secondary conductive terminal (302) matched with the secondary copper bar (305) is arranged in the secondary bolt (3); The universal detector (104) is arranged on the connecting frame (101); The first sliding groove (4) and the second sliding groove (5) are arranged on the protector (102) and communicated with the main bolt (2); The U-shaped plate (501) is slidably connected in the second sliding groove (5), the first pressure switch (502) is arranged on the inner wall of the U-shaped plate (501), the linkage rod (503) is slidably connected on the U-shaped plate (501), the push plate (504) is arranged on the one end of the linkage rod (503) outside the second sliding groove (5), and the end of the linkage rod (503) away from the push plate (504) is matched with the first pressure switch (502); The square rod (201) is rotatably connected in the main bolt (2), the limit frame (202) is fixedly arranged on the square rod (201), the bottom of the main copper bar (203) is provided with a U-shaped groove corresponding to the square rod (201), the bottom of the main copper bar (203) is inserted into the limit frame (202), the recess is further arranged on the protector (102), the both ends of the square rod (201) are further fixedly connected with the rotating shaft (204), the large gear (7) is arranged on the rotating shaft (204), the first small gear (701) and the second small gear (702) are further rotatably connected in the recess, the first small gear (701) is engaged with the large gear (7), the first rack plate (703) and the second rack plate (704) are respectively engaged with the bottom and the top of the second small gear (702), the first shielding plate (705) and the second shielding plate (706) matched with the main copper bar (203) are slidably connected on the outer wall of the protector (102), the first rack plate (703) is fixedly connected with the first shielding plate (705), the second rack plate (704) is fixedly connected with the second shielding plate (706), and the first rack plate (703) and the second rack plate (704) are slidably connected in the recess.

2. The multi-interface conductive redundant connection device for a fusion terminal according to claim 1, wherein, The conductive rod (404) is slidably connected in the first sliding groove (4), and the fixed plate (401) is fixedly arranged in the first sliding groove (4), the supporting block (402) is connected with the fixed plate (401) through the elastic element, and the main conductive terminal (403) is arranged on the supporting block (402).

3. A multi-interface conductive redundant connection device for a fusion terminal according to claim 2, characterized in that, Threadedly connected with the protector (102) is a threaded rod (505) which is rotationally connected with a U-shaped plate (501), and the linkage rod (503) and the conductive rod (404) are respectively arranged on both sides of the main copper bar (203).

4. A multi-interface conductive redundant connection device for a fusion terminal according to claim 3, characterized in that, The main bolt (2) is slidably connected with a pressing plate (6) through a connecting rod, and the pressing plate (6) is provided with a pressing block (601), and the inner wall of the main bolt (2) is provided with a second pressure switch (602) corresponding to the pressing block (601).

5. A multi-interface conductive redundant connection device for a fusion terminal according to claim 4, characterized in that, The inner wall of the auxiliary bolt (3) is provided with an electric telescopic rod (303), and the first pressure switch (502) and the second pressure switch (602) are electrically connected with the electric telescopic rod (303) through wires, and the output end of the electric telescopic rod (303) is connected with a trapezoidal block (304), and the auxiliary copper bar (305) is provided with a trapezoidal groove (306) corresponding to the trapezoidal block (304), and the inner wall of the auxiliary bolt (3) is provided with a spring sheet (301) abutting against the outer wall of the auxiliary copper bar (305).

6. The multi-interface conductive redundant connection device for a fusion terminal according to claim 1, wherein The main copper bar (203) is connected with a first connecting copper bar (205), the auxiliary copper bar (305) is connected with a second connecting copper bar (307), the first connecting copper bar (205) is provided with a long slot (207), the inner wall of the terminal box (1) is provided with an adjusting rod (206) inserted into the long slot (207), and the adjusting rod (206) is provided with a nut (208) abutting against the first connecting copper bar (205).

7. The multi-interface conductive redundant connection device for a fusion terminal according to claim 1, wherein The voltage detection end of the universal detector (104) is electrically connected with the voltage sampling end of the protector (102), and the current detection end of the universal detector (104) is electrically connected with the current sampling end of the protector (102); the universal detector (104) is used to determine whether the copper bar has a connection abnormality.

8. A multi-interface conductive redundant connection device for a fusion terminal according to claim 7, characterized in that, The universal detector (104) is configured to: acquire and store current data and voltage data output by the protector (102) at a preset time interval; based on the stored multiple sets of data, calculate: Current reference value , Voltage reference value , Current relative fluctuation coefficient , Voltage relative fluctuation coefficient ; Single set current data bias rate ; wherein n represents the total number of sets of collected current or voltage data, represents the collected current data of the i-th set, represents the collected voltage data of the i-th set, is the current standard deviation, is the voltage standard deviation; when the current relative fluctuation coefficient is greater than a current preset threshold, or the voltage relative fluctuation coefficient is greater than a voltage preset threshold, or the single-group data deviation rate is greater than a data preset threshold, it is determined that the copper bar has a connection abnormality.

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