Multifunctional power distribution network line loss detection device

Abstract

The invention discloses a multifunctional power distribution network line loss detection device, and relates to the technical field of power detection, the multifunctional power distribution network line loss detection device comprises a multifunctional detection device body, and a voltage transformer is arranged on the inner wall of the multifunctional detection device body close to the top. According to the multifunctional power distribution network line loss detection device, when the multifunctional power distribution network line loss detection device needs to be used for measuring the variable electric quantity of a cable, firstly, the multifunctional detection device body is installed at the intersection node of a main line and a plurality of important branch lines; then, the clamping tool is moved to the connecting position of each cable and the connector lug body and the external cable, the cables are clamped, whether wiring between the multiple external cable UI connector lug bodies is accurate or not is detected, and the situation of cable wiring errors is prevented; the problem that the fault position cannot be judged due to the fact that a power distribution network line loss detection device in the prior art is prone to wiring errors is solved.

Description

Technical Field

[0001] The invention relates to the technical field of power detection, and in particular to a multifunctional distribution network line loss detection device. Background Art

[0002] The multifunctional distribution network line loss detection device is a device used to monitor and evaluate the power loss in the distribution network. This device helps power companies identify the location and extent of line loss in the distribution network by real-time monitoring of electrical variables, voltage and other related parameters. Line loss refers to the power loss caused by the resistance of the wire, poor contact and transformer loss during the power transmission process. In the modern smart power system, the line loss detection device is an important part of achieving efficient management.

[0003] Existing, multifunctional distribution network line loss detection devices are mostly installed at the intersection of the main line and the important branch line when measuring the cable transformer quantity. This can grasp the line loss situation of each line and facilitate the location of the problem. In the process of connecting the distribution network line loss detection device with multiple cables, since the detection device is connected to a large number of cables, when multiple cables are connected, since most of the existing distribution network line loss detection devices do not have different cable joint identification detection devices, workers are prone to wiring errors in the process of connecting the cables to the detection device, which leads to signal confusion. When a cable fails at a certain point, the multifunctional distribution network line loss detection device is prone to read erroneous data, which leads to the data monitored in real time by the multifunctional distribution network line loss detection device being inconsistent with the actual situation, and the location of the fault cannot be accurately determined.

[0004] Therefore, we propose a multifunctional distribution network line loss detection device to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a multifunctional power distribution network line loss detection device to solve the problem that the power distribution network line loss detection device proposed in the above background technology is prone to wiring errors, resulting in the inability to determine the fault location.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional distribution network line loss detection device, comprising a multifunctional detection device body, a voltage transformer is arranged near the top of the inner wall of the multifunctional detection device body, a current transformer is arranged near the top of the inner wall of the multifunctional detection device body, a plurality of terminal bodies are arranged near the center of the outer surface of the multifunctional detection device body, a clamping detection component is arranged near the bottom of the outer surface of the multifunctional detection device body, a positioning component is arranged on the outer surface of the clamping detection component, the positioning component comprises a mounting plate and a lifting block, a sliding groove is provided near the center of the top of the mounting plate, support blocks are fixedly installed by screws near the edges of both sides of the top of the mounting plate, the clamping detection component comprises two tooth rows, one end of the two tooth rows is fixedly connected with a clamping block, a generator body for detecting whether the contact of the line speed detection device and the cable joint are correctly connected is arranged near the top of the outer surface of the lifting block, and a clamping tool for connecting the generator body and the cable is arranged at the output end of the generator body through a wire.

[0007] Preferably, a first forward and reverse motor is fixed to the outer surface of one of the support blocks by screws, a ball screw is fixedly connected to the output end of the first forward and reverse motor, a sliding frame is fixedly connected to the outer surface of the ball screw, a second forward and reverse motor is fixedly connected to the top of the sliding frame by screws, and a threaded rod is fixedly connected to the output end of the second forward and reverse motor.

[0008] Preferably, the outer surface of the threaded rod is threadedly connected to the inner wall of the lifting block, an input shaft is fixed to the bottom end of the threaded rod, a reducer is arranged at the bottom end of the input shaft, and an output shaft is fixedly connected to the output end of the reducer.

[0009] Preferably, a driving gear is fixedly installed on the bottom end of the output shaft, and fixing rods are fixedly installed on the outer surface of the lifting block near the two side edges, and driven gears are rotatably sleeved on the outer surfaces of the two fixing rods near the bottom ends.

[0010] Preferably, the outer surface of the mounting plate is fixedly connected to the outer surface of the multifunctional detection device body by screws, the two ends of the ball screw are respectively movable through the outside of the two support blocks, and the two ends of the threaded rod are respectively movable through the opposite outsides of the sliding frame.

[0011] Preferably, the outer surface of the sliding frame is slidably connected to the inside of the sliding groove, the outer surface of the lifting block is slidably connected to the inner wall of the sliding frame, the outer surface of the reducer is fixedly connected to the inner wall of the lifting block through an auxiliary plate, and the outer surfaces of the two driven gears are meshingly connected to the outer surface of the driving gear.

[0012] Preferably, outer surfaces of the two driven gears are meshedly connected with outer surfaces of the two tooth rows respectively, and the outer surfaces of the two tooth rows are slidably connected with relative inner walls of the lifting block respectively, and rolling balls are arranged on the relative inner walls of the lifting block.

[0013] Preferably, the outer surfaces of the two balls slide respectively with the inner walls of the two tooth rows, the outer surface of the clamping tool is fixedly connected to the outer surface of the lifting block by screws, and the clamping tool is arranged between the outer surfaces of the two clamping blocks.

[0014] Preferably, a fixing component for fixing the cable is provided near the bottom of the outer surface of the multifunctional detection device body, and the fixing component includes a pressure-resistant plate, the outer surface of the pressure-resistant plate is fixedly connected to the outer surface of the multifunctional detection device body by a plurality of screws, and a plurality of supporting blocks are fixed on the top of the pressure-resistant plate, and springs are provided on the outer surfaces of the plurality of supporting blocks.

[0015] Preferably, one end of each of the multiple springs is provided with a positioning block for clamping the cable, one end of each of the multiple springs is fixedly connected to the outer surface of each of the multiple bearing blocks, and the other end of each of the multiple springs is fixedly connected to the outer surface of each of the multiple positioning blocks.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When it is necessary to use a multifunctional distribution network line loss detection device to measure the variable quantity of the cable, first install the multifunctional detection device body at the node where the main line and multiple important branches intersect, then move the clamping tool to the connection between each cable and the terminal head body and the external cable, and clamp the cable to detect whether the wiring between multiple external cable UI terminal head bodies is accurate, to prevent cable wiring errors, and solve the problem that the distribution network line loss detection device in the prior art is prone to wiring errors and cannot determine the fault location.

[0017] 2. In the process of connecting multiple external cables to the terminal block body, in order to prevent the cable connection from loosening and causing inaccurate cable line loss detection, before the multiple external cables are respectively inserted into the interior of the terminal block body, they are first inserted between the two positioning blocks corresponding to the terminal block body. When the cables are inserted into the interior of the terminal block body, the two positioning blocks can squeeze and fix the cables, ensuring the stability of the cable connection, thereby further improving the accuracy of the multifunctional detection device body in detecting cable line loss.

[0018] 3. When all external cables in the multifunctional detection device are connected, start the voltage transformer and current transformer first. The current transformer can monitor the change of current in real time. When the current changes, the line loss detection device can combine the data of the voltage transformer to analyze the impact of the current change on the line loss. The real-time current monitoring data provided by the current transformer helps to understand the dynamic changes of the line loss in time, so as to better manage the operation and loss of the distribution network. Through the cooperation of the voltage transformer and the current transformer, the accurate measurement of the power of the distribution network can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front perspective view of a multifunctional power distribution network line loss detection device of the present invention; Figure 2 It is a three-dimensional diagram of the main body of a multifunctional detection device of a multifunctional distribution network line loss detection device of the present invention; Figure 3 It is a partial three-dimensional diagram of a positioning component of a multifunctional power distribution network line loss detection device of the present invention; Figure 4 It is a three-dimensional diagram of the unfolded structure of the sliding frame part of a multifunctional power distribution network line loss detection device of the present invention; Figure 5 It is a three-dimensional diagram of a lifting block part of a multifunctional power distribution network line loss detection device of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 It is a partial three-dimensional diagram of a clamping detection component of a multifunctional power distribution network line loss detection device of the present invention; Figure 8 It is a three-dimensional diagram of the fixed component part of a multifunctional power distribution network line loss detection device of the present invention.

[0020] In the figure: 1. Multifunctional detection device body; 2. Voltage transformer; 3. Current transformer; 4. Positioning assembly; 401. Mounting plate; 402. Slide; 403. Support block; 404. First forward and reverse motor; 405. Ball screw; 406. Sliding frame; 407. Second forward and reverse motor; 408. Threaded rod; 409. Lifting block; 410. Input shaft; 411. Reducer; 412. Output shaft; 413. Driving gear; 414. Fixed rod; 415. Driven gear; 5. Clamping detection assembly; 501. Gear row; 502. Ball; 503. Clamping block; 504. Generator body; 505. Clamping tool; 6. Terminal block body; 7. Fixed assembly; 701. Pressure plate; 702. Bearing block; 703. Spring; 704. Positioning block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-8The present invention provides a technical solution: a multifunctional distribution network line loss detection device, comprising a multifunctional detection device body 1, a voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, a current transformer 3 is arranged near the top of the inner wall of the multifunctional detection device body 1, a plurality of terminal bodies 6 are arranged near the center of the outer surface of the multifunctional detection device body 1, a clamping detection component 5 is arranged near the bottom of the outer surface of the multifunctional detection device body 1, a positioning component 4 is arranged on the outer surface of the clamping detection component 5, the positioning component 4 includes a mounting plate 401 and a lifting block 409, a slide groove 402 is opened near the center of the top of the mounting plate 401, and the mounting plate 40 1 is fixedly installed with support blocks 403 by screws near the edges of both sides, a first forward and reverse motor 404 is fixedly fixedly installed on the outer surface of one of the support blocks 403 by screws, and a ball screw 405 is fixedly connected to the output end of the first forward and reverse motor 404, the clamping detection component 5 includes two tooth rows 501, one end of the two tooth rows 501 is fixedly connected to the clamping block 503, the outer surface of the lifting block 409 is provided with a generator body 504 near the top for detecting whether the contact of the line speed detection device and the cable joint are correctly connected, and the output end of the generator body 504 is provided with a clamping tool 505 for connecting the generator body 504 to the cable through a wire. The outer surface of the ball screw 405 is fixedly connected to a sliding frame 406, and the top of the sliding frame 406 is fixedly connected to a second forward and reverse motor 407 by screws. The output end of the second forward and reverse motor 407 is fixedly connected to a threaded rod 408, and the outer surface of the threaded rod 408 is threadedly connected to the inner wall of the lifting block 409. The bottom end of the threaded rod 408 is fixed with an input shaft 410, and a reducer 411 is arranged at the bottom end of the input shaft 410. The output end of the reducer 411 is fixedly connected to an output shaft 412, and a driving gear 413 is fixedly installed at the bottom end of the output shaft 412. Fixed rods 414 are fixedly installed on the outer surface of the lifting block 409 near the edges on both sides. The two fixed rods 414 are A driven gear 415 is rotatably sleeved on the outer surface near the bottom end, the outer surface of the mounting plate 401 is fixedly connected to the outer surface of the multifunctional detection device body 1 by screws, the two ends of the ball screw 405 are respectively movable and penetrate to the outside of the two support blocks 403, the two ends of the threaded rod 408 are respectively movable and penetrate to the opposite outside of the sliding frame 406, the outer surface of the sliding frame 406 is slidably connected to the inside of the slide groove 402, the outer surface of the lifting block 409 is slidably connected to the inner wall of the sliding frame 406, the outer surface of the reducer 411 is fixedly connected to the inner wall of the lifting block 409 through an auxiliary plate, and the outer surfaces of the two driven gears 415 are meshed with the outer surface of the driving gear 413.

[0023] In this embodiment, when it is necessary to use the multifunctional distribution network line loss detection device to measure the variable quantity of the cable, firstly, the multifunctional detection device body 1 is installed at the node where the main line and multiple important branches meet, and then one end of the multiple external cables is connected to the multiple terminal head bodies 6, and it is necessary to ensure that each cable corresponds to each terminal head body 6 one by one, so that the multifunctional detection device body 1 can accurately measure the line loss of multiple cables at the same time. In the process of connecting the cables to the terminal head bodies 6, in order to prevent the connection errors between multiple cables and multiple terminal head bodies 6, when one of the cables is connected to one of the terminal head bodies 6, the first forward and reverse motor 404 is started first to drive the ball screw 405 to rotate, wherein the ball screw 405 is composed of a screw, a nut, a ball and a reverse device. The screw is a slender shaft with a spiral groove, and the thread on its surface is precisely machined with high precision requirements. The nut is The component that cooperates with the screw also has a corresponding spiral groove inside for accommodating balls. The balls are the key transmission elements in the ball screw 405 and are spherical. They are located between the spiral grooves of the screw and the nut to reduce friction. The reversing device is mainly used to guide the balls to circulate and roll between the screw and the nut. When the screw rotates, due to the spiral grooves between the screw and the nut and the presence of the balls, the balls will roll in the spiral grooves. When the screw rotates clockwise, the balls will roll along the spiral grooves into the spiral grooves of the nut under the push of the spiral grooves of the screw. Due to the rolling of the balls, the nut will produce a linear motion relative to the screw. This mode of movement converts the rotational motion of the screw into the linear motion of the nut, thereby driving the sliding frame 406 to move along the ball screw 405. The movement of the sliding frame 406 drives the clamping tool 505 to move to just above the connection between the cable and the terminal head body 6, thereby realizing the precise movement of the positioning component 4.

[0024] like Figure 2-Figure 8 As shown, the outer surface of one of the support blocks 403 is fixed with a first forward and reverse motor 404 by screws, the output end of the first forward and reverse motor 404 is fixedly connected to a ball screw 405, the outer surface of the ball screw 405 is fixedly connected to a sliding frame 406, the top of the sliding frame 406 is fixedly connected to a second forward and reverse motor 407 by screws, the output end of the second forward and reverse motor 407 is fixedly connected to a threaded rod 408, the outer surface of the threaded rod 408 is threadedly connected to the inner wall of a lifting block 409, the bottom end of the threaded rod 408 is fixed with an input shaft 410, a reducer 411 is arranged at the bottom end of the input shaft 410, the output end of the reducer 411 is fixedly connected to an output shaft 412, the bottom end of the output shaft 412 is fixedly installed with a driving gear 413, the outer surface of the lifting block 409 is fixedly installed with fixed rods 414 near the edges on both sides, and the outer surfaces of the two fixed rods 414 are rotatably sleeved with driven gears 415 near the bottom.

[0025] In this embodiment, when the clamping tool 505 moves to the top of the connection between the cable and the terminal head body 6, the second forward and reverse motor 407 is started to drive the threaded rod 408 to rotate, thereby driving the lifting block 409 to move downward. Figure 3 As shown, the rectangular groove on the surface of the sliding frame 406 has a limiting effect on the sliding frame 406, so that it can only move vertically downward along the direction of the threaded rod 408. The movement of the lifting block 409 drives the clamping tool 505 to move downward to the surface of the external cable. In addition, the rotation of the threaded rod 408 also drives the input shaft 410 to rotate. The rotation of the input shaft 410 is adjusted to a speed matching the opening and closing speed of the clamping tool 505 by the reducer 411, and then outputted through the output shaft 412. The rotation of the output shaft 412 drives the driving gear 413 to rotate, and then drives the two driven gears 415 to rotate, so that the two gear rows 501 slide along the inner wall of the lifting block 409 respectively, wherein, in combination with Figure 3 and Figure 7 As shown, in order to further increase the speed at which the two tooth rows 501 slide along the inner wall of the lifting block 409, the two rolling balls 502 are provided to make the two tooth rows 501 smoother during the movement, thereby further increasing the sliding speed of the two clamping blocks 503, so that the two clamping blocks 503 rotate in opposite directions, thereby separating from the opposite outer surfaces of the upper part of the opened clamping tool 505, wherein, as Figure 7 As shown, the clamping tool 505 is composed of two inclined clamping teeth, a lever and a spiral elastic device, which is an existing mature technology and will not be introduced in detail here. Under the action of the lever principle, the lower part of the clamping tool 505 rotates towards each other, so that the bottom of the clamping tool 505 slowly closes during the downward movement. When the clamping tool 505 is completely closed, the two clamping pieces at the bottom of the clamping tool 505 just completely clamp the cable, thereby indirectly realizing the connection between the cable and the generator body 504. At this time, the generator body 504 can be started. When the generator body 504 generates a high-frequency detection signal, the signal can be accurately transmitted to the cable connector through the clamping tool 505. In this way, the signal can smoothly enter the cable system. And detect whether the cable connector connection is correct, the transmission characteristics of the signal in the cable, etc., when the cable wiring is correctly detected, start the second forward and reverse motor 407 again, drive the threaded rod 408 to rotate in the opposite direction, and then drive the lifting block 409 to move vertically upward, so that the two clamping blocks 503 move toward each other, so that the clamping tool 505 is opened, separated from the external cable and moves upward until it is completely separated from the outer surface of the cable body. Through the action of the clamping detection component 5, it can be detected whether the wiring between multiple external cable UI terminal heads 6 is accurate, so as to prevent the occurrence of cable wiring errors, thereby solving the problem that the distribution network line loss detection device in the prior art is prone to wiring errors and cannot determine the fault location.

[0026] like Figure 2 , Figure 4 and Figure 7 As shown, a fixing component 7 for fixing the cable is arranged near the bottom of the outer surface of the multifunctional detection device body 1, and the fixing component 7 includes a pressure-resistant plate 701, and the outer surface of the pressure-resistant plate 701 is fixedly connected to the outer surface of the multifunctional detection device body 1 by a plurality of screws, and a plurality of bearing blocks 702 are fixed on the top of the pressure-resistant plate 701, and springs 703 are arranged on the outer surfaces of the plurality of bearing blocks 702, and a positioning block 704 for clamping the cable is arranged at one end of the plurality of springs 703, and one end of the plurality of springs 703 is respectively fixedly connected to the outer surfaces of the plurality of bearing blocks 702, and the other ends of the plurality of springs 703 are respectively fixedly connected to the outer surfaces of the plurality of positioning blocks 704, and the outer surfaces of the two rolling balls 502 slide respectively with the inner walls of the two tooth rows 501, and the outer surface of the clamping tool 505 is fixedly connected to the outer surface of the lifting block 409 by screws, and the clamping tool 505 is arranged between the outer surfaces of the two clamping blocks 503.

[0027] In this embodiment, in the process of connecting multiple external cables to the terminal block body 6, in order to prevent the cable connection from being loose and causing inaccurate cable line loss detection, before the multiple external cables are respectively inserted into the interior of the terminal block body 6, they are first inserted between the two positioning blocks 704 corresponding to the terminal block body 6, wherein, as Figure 8 As shown, the cross section of the positioning block 704 is arc-shaped, and each corresponding two positioning blocks 704 form an outwardly opened "eight" shape. When the cable is inserted between the outer surfaces of the two positioning blocks 704, the two positioning blocks 704 are squeezed by the cable so that they move to one side of the spring 703 connected thereto, respectively, so that the two springs 703 are squeezed and shortened, and the two springs 703 rebound under the action of their own elastic force, thereby squeezing the cable. When the cable is inserted into the interior of the terminal head body 6, the two positioning blocks 704 can squeeze and fix the cable, ensuring the stability of the cable connection, thereby further improving the accuracy of the multifunctional detection device body 1 in detecting cable line loss. Figure 3 and Figure 7 As shown, in order to further increase the speed at which the two tooth rows 501 slide along the inner wall of the lifting block 409 , two rolling balls 502 are provided to make the two tooth rows 501 move more smoothly, thereby further increasing the sliding rate of the two clamping blocks 503 .

[0028] like Figure 1As shown, a multifunctional distribution network line loss detection device comprises a multifunctional detection device body 1, a voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, a current transformer 3 is arranged near the top of the inner wall of the multifunctional detection device body 1, a plurality of terminal bodies 6 are arranged near the center of the outer surface of the multifunctional detection device body 1, a clamping detection component 5 is arranged near the bottom of the outer surface of the multifunctional detection device body 1, and the outer surface of the clamping detection component 5 is provided with a positioning component 4, and the positioning component 4 includes a mounting plate 401 and a lifting block 409 ... voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, and the voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, and the voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, and the voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, and the voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, and the voltage transformer 2 is arranged near the top of the inner wall of the multifunctional detection device body 1, and the voltage transformer A slide groove 402 is provided near the center of the top of the mounting plate 401, and support blocks 403 are fixedly installed near the edges on both sides of the top of the mounting plate 401 by screws. The clamping detection component 5 includes two tooth rows 501, and one end of the two tooth rows 501 is fixedly connected with a clamping block 503. A generator body 504 for detecting whether the contact point of the line speed detection device and the cable connector are correctly connected is provided near the top of the outer surface of the lifting block 409, and a clamping tool 505 for connecting the generator body 504 to the cable is provided at the output end of the generator body 504 through a wire.

[0029] In this embodiment, when all external cables in the multifunctional detection device body 1 are connected, when it is necessary to detect the line loss of the cable, the voltage transformer 2 is first started to convert the high voltage in the distribution network into a low voltage in proportion. In this way, the measurement module in the multifunctional detection device body 1 can easily and accurately measure the converted low voltage. Since the voltage in the distribution network is not constant, it will fluctuate due to various factors such as load changes and power grid failures. The voltage transformer 2 can monitor the voltage changes in real time. When the voltage fluctuates, the multifunctional detection device body 1 can analyze the impact of the voltage fluctuation on the line loss, so as to better evaluate the operating status and line loss characteristics of the cable. In the detection of cable line loss in the distribution network, the current transformer 3 is the first The main function is to collect the current signal in the cable. The current in the distribution network cable varies depending on factors such as the load, and the current is large. It is unrealistic to directly measure these large currents. The current transformer 3 can convert the large current on the primary side into a small current on the secondary side in proportion. The current transformer 3 can monitor the change of current in real time. When the current changes, the line loss detection device can combine the data of the voltage transformer 2 to analyze the impact of the current change on the line loss. The real-time current monitoring data provided by the current transformer 3 helps to timely understand the dynamic changes of the line loss and evaluate the line loss characteristics of the cable under different load conditions, so as to better manage the operation and loss of the distribution network. Through the cooperation of the voltage transformer 2 and the current transformer 3, the accurate measurement of the power of the distribution network can be achieved.

[0030] The use method and working principle of this device: When it is necessary to use a multifunctional distribution network line loss detection device to measure the variable quantity of the cable, first install the multifunctional detection device body 1 at the node where the main line and multiple important branches intersect. In the process of connecting multiple external cables to the terminal head body 6, in order to prevent the cable connection from loosening and causing inaccurate cable line loss detection, before the multiple external cables are respectively inserted into the interior of the terminal head body 6, they are first inserted between the two positioning blocks 704 corresponding to the terminal head body 6. When the cable is inserted between the outer surfaces of the two positioning blocks 704, the two positioning blocks 704 are squeezed by the cables so that they move to one side of the spring 703 connected thereto, respectively, so that the two springs 703 are squeezed and shortened, and the two springs 703 rebound under the action of their own elastic force, thereby squeezing the cable. When the cable is inserted into the interior of the terminal head body 6, the two positioning blocks 704 can squeeze and fix the cable, ensuring the safety of the cable. The stability of the cable connection, then connect one end of the multiple external cables with the multiple terminal head bodies 6, and ensure that each cable corresponds to each terminal head body 6, so that the multi-functional detection device body 1 can accurately measure the line loss of multiple cables at the same time. In the process of connecting the cables to the terminal head bodies 6, in order to prevent the connection errors between the multiple cables and the multiple terminal head bodies 6, when one of the cables is connected to one of the terminal head bodies 6, first start the first forward and reverse motor 404 to drive the ball screw 405 to rotate, and then drive the sliding frame 406 to move along the ball screw 405. The movement of the sliding frame 406 drives the clamping tool 505 to move to the top of the connection between the cable and the terminal head body 6, that is, the precise movement of the positioning component 4 is realized. When the clamping tool 505 moves to the top of the connection between the cable and the terminal head body 6, the second forward and reverse motor 407 is started to drive the threaded rod 408 to rotate, and then drive the lifting block 409 to move downward, wherein, as Figure 3 As shown, the rectangular groove on the surface of the sliding frame 406 has a limiting effect on the sliding frame 406, so that it can only move vertically downward along the direction of the threaded rod 408. The movement of the lifting block 409 drives the clamping tool 505 to move downward to the surface of the external cable. In addition, the rotation of the threaded rod 408 also drives the input shaft 410 to rotate. The rotation of the input shaft 410 is adjusted to a speed matching the opening and closing speed of the clamping tool 505 by the reducer 411, and then outputted through the output shaft 412. The rotation of the output shaft 412 drives the driving gear 413 to rotate, and then drives the two driven gears 415 to rotate, so that the two gear rows 501 slide along the inner wall of the lifting block 409 respectively, combined with Figure 3 and Figure 7As shown, in order to further increase the speed at which the two tooth rows 501 slide along the inner wall of the lifting block 409, the two rolling balls 502 are provided to make the two tooth rows 501 smoother during movement, so that the two clamping blocks 503 rotate in opposite directions, thereby separating from the opposite outer surfaces of the upper part of the opened clamping tool 505, and under the action of the lever principle, the lower part of the clamping tool 505 rotates in opposite directions, so that the bottom of the clamping tool 505 slowly closes during the downward movement. When the clamping tool 505 is completely closed, the two clamping pieces at the bottom of the clamping tool 505 just completely clamp the cable, thereby indirectly realizing the connection between the cable and the generator body 504, and the generator can be started at this time. Generator body 504, when the generator body 504 generates a high-frequency detection signal, the signal can be accurately transmitted to the cable connector through the clamping tool 505, so that the signal can smoothly enter the cable system, so as to detect whether the cable connector is connected correctly, the transmission characteristics of the signal in the cable, etc. When the cable connection is correctly detected, the second forward and reverse motor 407 is started again to drive the threaded rod 408 to rotate in the opposite direction, thereby driving the lifting block 409 to move vertically upward, so that the two clamping blocks 503 move toward each other, so that the clamping tool 505 is opened, separated from the external cable and moves upward until it is completely separated from the outer surface of the cable body. After all external cables in the testing device body 1 are connected, when it is necessary to detect the line loss of the cable, the voltage transformer 2 is first started to convert the high voltage in the distribution network into a low voltage in proportion. In this way, the measuring module in the multifunctional testing device body 1 can conveniently and accurately measure the converted low voltage. Since the voltage in the distribution network is not constant, it will fluctuate due to various factors such as load changes and power grid failures. The voltage transformer 2 can monitor the voltage changes in real time. When the voltage fluctuates, the multifunctional testing device body 1 can analyze the impact of the voltage fluctuation on the line loss, so as to better evaluate the operating status and line loss characteristics of the cable. During the measurement, the primary function of the current transformer 3 is to collect the current signal in the cable. The current in the distribution network cable varies depending on factors such as the load, and the current is large. It is unrealistic to directly measure these large currents. The current transformer 3 can convert the large current on the primary side into a small current on the secondary side in proportion. The current transformer 3 can monitor the change of the current in real time. When the current changes, the line loss detection device can combine the data of the voltage transformer 2 to analyze the impact of the current change on the line loss. The real-time current monitoring data provided by the current transformer 3 helps to timely understand the dynamic changes of the line loss and evaluate the line loss characteristics of the cable under different load conditions, so as to better manage the operation and loss of the distribution network.

[0031] The wiring diagram of the multifunctional detection device body 1, voltage transformer 2, current transformer 3, first forward and reverse motor 404, second forward and reverse motor 407, generator body 504 and terminal head body 6 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the multifunctional detection device body 1, voltage transformer 2, current transformer 3, first forward and reverse motor 404, second forward and reverse motor 407, generator body 504 and terminal head body 6 will no longer be explained in detail.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional distribution network line loss detection device, comprising a multifunctional detection device body (1), a voltage transformer (2) is arranged near the top of the inner wall of the multifunctional detection device body (1), a current transformer (3) is arranged near the top of the inner wall of the multifunctional detection device body (1), a plurality of terminal bodies (6) are arranged near the center of the outer surface of the multifunctional detection device body (1), and a clamping detection component (5) is arranged near the bottom of the outer surface of the multifunctional detection device body (1), characterized in that: A positioning assembly (4) is arranged on the outer surface of the clamping detection assembly (5), and the positioning assembly (4) comprises a mounting plate (401) and a lifting block (409). A sliding groove (402) is provided near the center of the top of the mounting plate (401), and support blocks (403) are fixedly mounted on the top of the mounting plate (401) near both side edges by screws: The clamping detection assembly (5) comprises two tooth rows (501), one end of each of the two tooth rows (501) being fixedly connected to a clamping block (503), a generator body (504) for detecting whether a contact point of a line speed detection device and a cable joint are correctly connected is arranged near the top of the outer surface of the lifting block (409), and a clamping tool (505) for connecting the generator body (504) to a cable is arranged at the output end of the generator body (504) via a wire.

2. The multifunctional power distribution network line loss detection device according to claim 1 is characterized in that: A first forward / reverse motor (404) is fixed to the outer surface of one of the support blocks (403) by means of screws, the output end of the first forward / reverse motor (404) is fixedly connected to a ball screw (405), the outer surface of the ball screw (405) is fixedly connected to a sliding frame (406), the top of the sliding frame (406) is fixedly connected to a second forward / reverse motor (407) by means of screws, and the output end of the second forward / reverse motor (407) is fixedly connected to a threaded rod (408).

3. The multifunctional power distribution network line loss detection device according to claim 2 is characterized in that: The outer surface of the threaded rod (408) is threadedly connected to the inner wall of the lifting block (409); an input shaft (410) is fixed to the bottom end of the threaded rod (408); a reducer (411) is arranged at the bottom end of the input shaft (410); and an output shaft (412) is fixedly connected to the output end of the reducer (411).

4. The multifunctional power distribution network line loss detection device according to claim 3 is characterized in that: A driving gear (413) is fixedly mounted on the bottom end of the output shaft (412), and fixing rods (414) are fixedly mounted on the outer surface of the lifting block (409) near both side edges, and driven gears (415) are rotatably sleeved on the outer surfaces of the two fixing rods (414) near the bottom ends.

5. The multifunctional power distribution network line loss detection device according to claim 4 is characterized in that: The outer surface of the mounting plate (401) is fixedly connected to the outer surface of the multifunctional detection device body (1) by means of screws, the two ends of the ball screw (405) are respectively movable and penetrate the outside of the two support blocks (403), and the two ends of the threaded rod (408) are respectively movable and penetrate the opposite outsides of the sliding frame (406).

6. The multifunctional power distribution network line loss detection device according to claim 5 is characterized in that: The outer surface of the sliding frame (406) is slidably connected to the inside of the sliding groove (402), the outer surface of the lifting block (409) is slidably connected to the inner wall of the sliding frame (406), the outer surface of the reducer (411) is fixedly connected to the inner wall of the lifting block (409) via an auxiliary plate, and the outer surfaces of the two driven gears (415) are meshingly connected to the outer surface of the driving gear (413).

7. The multifunctional power distribution network line loss detection device according to claim 6 is characterized in that: The outer surfaces of the two driven gears (415) are respectively meshed with the outer surfaces of the two gear rows (501), and the outer surfaces of the two gear rows (501) are respectively slidably connected with the relative inner walls of the lifting block (409), and the relative inner walls of the lifting block (409) are both provided with rolling balls (502).

8. The multifunctional power distribution network line loss detection device according to claim 7 is characterized in that: The outer surfaces of the two rolling balls (502) slide respectively with the inner walls of the two tooth rows (501); the outer surface of the clamping tool (505) is fixedly connected to the outer surface of the lifting block (409) via screws; the clamping tool (505) is arranged between the outer surfaces of the two clamping blocks (503).

9. The multifunctional power distribution network line loss detection device according to claim 8, characterized in that: A fixing component (7) for fixing the cable is arranged near the bottom of the outer surface of the multifunctional detection device body (1), and the fixing component (7) comprises a pressure-resistant plate (701). The outer surface of the pressure-resistant plate (701) is fixedly connected to the outer surface of the multifunctional detection device body (1) via a plurality of screws. A plurality of bearing blocks (702) are fixed on the top of the pressure-resistant plate (701), and springs (703) are arranged on the outer surfaces of the plurality of bearing blocks (702).

10. The multifunctional power distribution network line loss detection device according to claim 9, characterized in that: One end of each of the plurality of springs (703) is provided with a positioning block (704) for clamping the cable, one end of each of the plurality of springs (703) is fixedly connected to the outer surface of each of the plurality of bearing blocks (702), and the other end of each of the plurality of springs (703) is fixedly connected to the outer surface of each of the plurality of positioning blocks (704).

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