Fault accurate control positioning device of distribution line

Abstract

The invention discloses a distribution line fault accurate control positioning device, which comprises a lower main body and an upper main body which are matched with each other, a high-altitude cable is clamped by grooves in the lower main body and the upper main body, a sealing cover is arranged above the upper main body by using bolts, and a solar panel is fixedly arranged on the upper surface of the sealing cover; a current transformer used for taking electricity from a high-altitude cable is fixedly installed on the upper surface of the lower body, a storage battery and a rectifier are fixedly installed in the lower body, and the storage battery is electrically connected with the current transformer through the rectifier. And first sealing gaskets which are distributed at equal intervals are fixedly mounted in the groove in the upper surface of the lower main body. According to the accurate fault control and positioning device for the distribution line, the solar panel is arranged on the upper surface of the device, solar energy is converted into electric energy through the solar panel and stored in the storage battery through the rectifier, and when the load of a high-altitude cable is low (namely, the conveyed current is small), the storage battery is used for supplying power to the device; therefore, the normal use of the device is prevented from being influenced by unstable power supply.

Description

Technical Field

[0001] This invention relates to the field of line fault location technology, specifically to a precise fault control and location device for power distribution lines. Background Technology

[0002] Fault control and location devices for power distribution lines are a core component of modern smart power distribution networks. Their goal is to quickly and accurately detect and isolate fault points, minimize the scope of power outages, and improve power supply reliability.

[0003] In the prior art, Chinese Patent Application No. CN201720265637.2 discloses a power distribution line fault location device, including a locator body. A solar panel is sleeved on the outer surface of the locator body. A first support plate is fixedly connected to one side of the top of the locator body, and a second support plate is fixedly connected to the other side of the top of the locator body, which is flush with the installation position of the first support plate. A wire clamping post is movably connected in a U-shaped groove opened on the top of both the first and second support plates. The distance between the clamp and the wire clamping post can be flexibly adjusted to adjust the tightness of the line in the clamping plate, making it convenient to use the locator device in different types of power distribution lines such as cables.

[0004] For example, in the prior art, Chinese Patent Application No. CN201710025385.0 discloses a fault location method for power distribution lines. This method includes: if the power distribution line is normal, then when the circuit breaker is closed, collecting and recording the closing traveling wave generated by the circuit breaker from the moment of closing; if the power distribution line has a permanent fault, then when the circuit breaker trips and is reclosed, collecting and recording the reclosing traveling wave generated by the circuit breaker from the moment of reclosing; determining the superimposed traveling wave of the fault based on the closing traveling wave and the reclosing traveling wave; and calculating the distance to the fault point of the power distribution line based on the fault point reflected wave in the superimposed traveling wave of the fault and the reclosing time.

[0005] For example, in the prior art, Chinese patent application number CN201610088428.5 discloses a power distribution line fault location device, including a base and a fault monitoring module installed on the base for monitoring the operating conditions of the power distribution line. The base has an upward-opening groove for embedding cables, and a wire pressing frame for pressing the cables in the groove is pivotally installed on the base. The fault monitoring module is equipped with two through-type current transformers, one of which is connected to the power input port of the fault monitoring module, and the other is connected to the monitoring signal input port of the fault monitoring module.

[0006] Based on the above information, it can be seen that existing fault location devices generally use a device clamped outside the cable to detect the line condition, and then calculate the fault location through an algorithm. However, in actual use, such devices generally use CT power supply (i.e., using current transformers to generate current). This method is greatly affected by the power of the transmission line, and under low load or no load conditions, there may be insufficient power supply for normal operation. Summary of the Invention

[0007] The purpose of this invention is to provide a precise fault control and location device for power distribution lines to solve the problem of unstable power supply mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a precise fault control and location device for power distribution lines, comprising a lower body and an upper body that cooperate with each other. The lower and upper bodies have internal grooves that hold overhead cables. A sealing cover is bolted to the top of the upper body, and a solar panel is fixedly mounted on the upper surface of the sealing cover. A current transformer for drawing power from the overhead cable is fixedly mounted on the upper surface of the lower body, and a battery and a rectifier are fixedly mounted inside the lower body. The battery is electrically connected to the current transformer through the rectifier. A first sealing gasket with equal spacing is fixedly mounted inside the groove on the upper surface of the lower body, and a second sealing gasket with equal spacing is fixedly mounted inside the groove on the lower surface of the upper body. The second sealing gasket is made of hollow rubber. Drainage holes with equal spacing are opened in the middle of the lower body, and a through hole corresponding to the drainage hole is opened in the middle of the upper body. Ventilation holes are opened on the side of the upper body, and a drying mechanism is provided inside the upper body.

[0009] Preferably, a connecting bolt that is threadedly engaged with the lower body is rotatably mounted on the lower surface of the upper body, and a limiting guide rod that slides through the lower body is fixedly mounted on the lower surface of the upper body, and an operating ring is fixedly mounted on the lower end of the connecting bolt.

[0010] Preferably, a lower contact piece communicating with the rectifier is fixedly installed on the upper surface of the lower body, and an upper contact piece corresponding to the lower contact piece is provided on the lower surface of the upper body, and the upper contact piece is electrically connected to the solar panel.

[0011] Preferably, a compression airbag is fixedly installed between the upper contact piece and the upper body, and the compression airbag is connected to the second sealing gasket through a connecting pipe, and the second sealing gasket is aligned vertically with the first sealing gasket.

[0012] Preferably, a guide plate and heat dissipation fins are fixedly installed inside the upper body, and the through hole communicates with the interior of the upper body.

[0013] Preferably, the drying mechanism includes a mesh-like storage roller rotatably mounted inside the upper body, and the storage roller stores granular desiccant inside.

[0014] Preferably, the storage roller shaft is fixedly mounted with wind turbine blades located outside the upper body, and an auxiliary motor for assisting in driving the storage roller to rotate is fixedly mounted inside the upper body, and a reflector for repelling birds is fixedly mounted on the outer surface of the wind turbine blades.

[0015] Preferably, a deflector fan blade is rotatably mounted on the lower inner surface of the upper body, and the position of the deflector fan blade corresponds to the position of the through hole.

[0016] Preferably, a driven worm gear for driving its rotation is fixedly installed on the upper surface of the turbulence fan blade, and a driving worm is meshed with the side of the driven worm gear, and the driving worm is rotatably connected to the interior of the upper body.

[0017] Preferably, the active worm gear rotates synchronously with the storage roller via a synchronous belt.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the fault precise control and location device for the power distribution line adopts a novel structural design, the specific details of which are as follows: 1. Solar panels are installed on the upper surface of the device. The solar panels convert solar energy into electrical energy, which is then rectified and stored in the battery. When the load of the high-altitude cable is low (i.e., the current transmitted is small), the battery is used to power the device, thereby avoiding the impact of unstable power supply on the normal use of the device. Furthermore, by rotating the connecting bolts, the upper and lower main bodies are clamped and fixed to the outside of the high-altitude cable. At this time, the cooperation between the first and second sealing gaskets is used to achieve a seal, preventing external rainwater from entering the device through the groove gaps and causing water accumulation that could damage the cable. When the upper and lower contact pieces come into contact, they are squeezed. Under the action of the squeezing force, the air in the squeezing airbag is transported to the inside of the second sealing gasket through the connecting pipe, causing the second sealing gasket to expand and improve the overall sealing effect.

[0019] 2. Ventilation holes are opened on the left and right sides of the upper body to keep the air flowing inside the upper body. Combined with the guide plate and heat dissipation fins inside the upper body, heat dissipation is achieved, thereby quickly dissipating the heat of the high-altitude cable and avoiding damage to the cable due to prolonged heat accumulation. Furthermore, when air enters the upper body, it passes through the storage roller. At this time, the granular desiccant inside the storage roller absorbs the moisture in the air to achieve the purpose of drying, preventing rainwater from entering and forming water accumulation on rainy days. In addition, the external wind drives the wind turbine blades to rotate, which in turn drives the storage roller to rotate, so that the storage roller comes into even contact with the incoming air and achieves a better drying effect. At the same time, when the wind turbine blades rotate, the externally fixed reflectors are used to repel birds. Furthermore, the air velocity difference created when it flows inside the upper body allows air to enter the upper body through the drain holes and through holes, thereby achieving the purpose of heat dissipation at the location of the high-altitude cable. The hot air carried out during heat dissipation can also dry the desiccant inside the storage roller, ensuring the desiccant's subsequent water absorption effect. At the same time, during the rotation of the storage roller, the synchronous belt drives the active worm gear to rotate, which in turn drives the turbulence fan blades to rotate, allowing the hot air to contact the storage roller more evenly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the lower body and the upper body of the present invention in a separated state; Figure 3 This is a schematic diagram of the internal structure of the main body of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the lower surface structure of the upper body of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the connection relationship between the compression airbag and the second sealing gasket of the present invention; Figure 8 This is a schematic diagram of the internal structure of the main body of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C; Figure 10 This is a schematic diagram of the turbulence-causing fan blade structure of the present invention; Figure 11 This is a schematic diagram of the reflector structure of the present invention.

[0021] In the diagram: 1. Lower main body; 2. Upper main body; 3. High-altitude cable; 4. Sealing cover; 5. Solar panel; 6. Battery; 7. Rectifier; 8. Lower contact piece; 9. Upper contact piece; 10. First sealing gasket; 11. Second sealing gasket; 12. Compression airbag; 13. Connecting pipe; 14. Drain hole; 15. Connecting bolt; 16. Limiting guide rod; 17. Operating ring; 18. Current transformer; 19. Through hole; 20. Ventilation hole; 21. Guide plate; 22. Heat dissipation fins; 23. Storage roller; 24. Wind turbine blade; 2401. Reflector; 25. Auxiliary motor; 26. Turbine fan blade; 27. Driven worm gear; 28. Driving worm gear; 29. ​​Synchronous belt. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1-7 To locate faults in power distribution lines, this embodiment provides the following technical solution, specifically: a lower body 1 and an upper body 2 that cooperate with each other. The upper body 1 and upper body 2 have internal grooves that hold a high-altitude cable 3. A sealing cover 4 is bolted to the top of the upper body 2, and a solar panel 5 is fixedly installed on the upper surface of the sealing cover 4. A current transformer 18 for drawing power from the high-altitude cable 3 is fixedly installed on the upper surface of the lower body 1. A battery 6 and a rectifier 7 are fixedly installed inside the lower body 1. The battery 6 is electrically connected to the current transformer 18 through the rectifier 7. A first sealing gasket 10 with equal spacing is fixedly installed inside the groove on the upper surface of the lower body 1, and a second sealing gasket 10 with equal spacing is fixedly installed inside the groove on the lower surface of the upper body 2. 1. The second sealing gasket 11 is made of hollow rubber. The lower surface of the upper body 2 is rotatably installed with the connecting bolt 15 that is threaded to the lower body 1. The lower surface of the upper body 2 is fixedly installed with the limiting guide rod 16 that slides through the lower body 1. The lower end of the connecting bolt 15 is fixedly installed with the operating ring 17. The upper surface of the lower body 1 is fixedly installed with the lower contact piece 8 that communicates with the rectifier 7. The lower surface of the upper body 2 is provided with the upper contact piece 9 that contacts the lower contact piece 8. The upper contact piece 9 is electrically connected to the solar panel 5. The upper contact piece 9 and the upper body 2 are fixedly installed with the compression airbag 12. The compression airbag 12 is connected to the second sealing gasket 11 through the connecting pipe 13. The second sealing gasket 11 and the first sealing gasket 10 are aligned vertically.

[0024] When using the device, the operator first uses a rod-shaped tool to lift the device to the position of the high-altitude cable 3 (at this time, the upper body 2 and the lower body 1 are separated). Then, the device is secured to the outside of the high-altitude cable 3 through the gap. Subsequently, the operator rotates the operating ring 17 with the tool, causing the operating ring 17 to drive the connecting bolt 15 to rotate. During the rotation of the connecting bolt 15, under the guidance of the limiting guide rod 16, the upper body 2 moves downward to a position where it merges with the lower body 1. At this time, the upper contact piece 9 on the lower surface of the upper body 2 contacts and presses against the lower contact piece 8 on the upper surface of the lower body 1. Under the pressure, the compression airbag 12 is compressed. Air from the airbag 12 enters the second sealing gasket 11 through the connecting pipe 13, causing the second sealing gasket 11 to expand and improve the sealing effect when the second sealing gasket 11 and the first sealing gasket 10 are in contact. This prevents external rainwater from entering through the groove gap and forming water accumulation between the upper body 2 and the lower body 1. When the device is working, it is powered by the induced current generated between the current transformer 18 and the high-altitude cable 3. At the same time, the solar panel 5 above the sealing cover 4 converts solar energy into electrical energy, which is then rectified by the rectifier 7 and stored in the battery 6. When the load on the high-altitude cable 3 is low (i.e., the induced current generated is small), the battery 6 is used to power the device, thereby ensuring normal operation of the device.

[0025] The overall fault location principle of the device is as follows: Applied to precise fault location and identification in 10kV-35kV distribution network lines, it utilizes advanced technologies such as megabit-level high-speed sampling, BeiDou high-precision time synchronization, and precise signal phase error calibration to achieve accurate fault location in the distribution network. Based on a core module of artificial intelligence deep learning algorithms, it can automatically and quickly identify fault types and assist distribution network operation and maintenance personnel in fault cause analysis and early warning of potential faults. When a fault occurs on a line, a traveling wave is generated on the conductor and propagates to both ends. By monitoring and collecting fault signals and analyzing the time difference of the traveling wave signal arriving at the device, the fault point can be accurately located. High-speed acquisition of distribution network fault traveling wave signals and fault power frequency signals is uploaded to the monitoring platform in real time. The artificial intelligence deep learning algorithm performs fault diagnosis and outputs diagnostic results. The diagnostic results are pushed to operation and maintenance personnel via alarm SMS, and relevant information can be viewed in real time via mobile SMS and a web client.

[0026] Example 2: Please refer to Figures 8-9 and Figure 11In order to achieve ventilation and air drying, this embodiment provides the following technical solution, which specifically discloses: a guide plate 21 and heat dissipation fins 22 are fixedly installed inside the upper body 2, and the through hole 19 is connected to the interior of the upper body 2; drainage holes 14 are evenly distributed in the middle position of the lower body 1; the through hole 19 corresponding to the drainage hole 14 is opened in the middle position of the upper body 2; ventilation holes 20 are opened on the side of the upper body 2; a drying mechanism is set inside the upper body 2; the drying mechanism includes a mesh-shaped storage roller 23 rotatably installed inside the upper body 2; the storage roller 23 stores granular desiccant inside; a wind turbine blade 24 is fixedly installed at the pivot position of the storage roller 23 outside the upper body 2; an auxiliary motor 25 for assisting in driving the storage roller 23 to rotate is fixedly installed inside the upper body 2; and a reflector 2401 for repelling birds is fixedly installed on the outer surface of the wind turbine blade 24.

[0027] When the device is in normal use, external air enters the upper body 2 through the ventilation hole 20 on one side and exits from the other side (because the device is installed at a high position, the wind force is relatively strong). With the help of the guide plate 21 and heat dissipation fins 22 inside the upper body 2, heat dissipation is achieved. When the air enters the upper body 2, it comes into contact with the storage roller 23. At this time, the desiccant inside the storage roller 23 absorbs the moisture in the air, reducing internal dampness on rainy days. At the same time, the external wind force drives the wind turbine blades 24 to rotate, which in turn drives the storage roller 23 to rotate (when the wind force is low, the auxiliary motor 25 drives the storage roller 23 to rotate on the moving friction roller). This makes the desiccant contact the air more evenly, achieving a better drying effect. In addition, when the wind turbine blades 24 rotate, they drive the external reflector 2401 to rotate, using the reflective effect to repel birds.

[0028] Example 3: Please refer to Figure 10 In order to achieve the purpose of drying the desiccant, this embodiment provides the following technical solution, which specifically discloses: a turbulence fan blade 26 is rotatably installed on the lower surface of the upper body 2, and the position of the turbulence fan blade 26 corresponds to the position of the through hole 19. A driven worm gear 27 for driving its rotation is fixedly installed on the upper surface of the turbulence fan blade 26, and a driving worm gear 28 is meshed with the side of the driven worm gear 27. The driving worm gear 28 is rotatably connected to the interior of the upper body 2, and the driving worm gear 28 rotates synchronously with the storage roller 23 through the synchronous belt 29.

[0029] When air flows through the upper body 2, a velocity difference is created between it and the location of the overhead cable 3. Under the action of pressure difference, the air at the bottom enters the location of the overhead cable 3 through the drain hole 14, carrying away the heat from the location of the overhead cable 3, and then enters the upper body 2 through the through hole 19. The airflow and heat are used to dry the desiccant inside the storage roller 23. At the same time, the storage roller 23 drives the drive worm gear 28 to rotate through the synchronous belt 29. The driven worm wheel 27, which is meshed with the drive worm gear 28, drives the turbulence fan blade 26 to rotate, so that the hot air contacts the desiccant inside the storage roller 23 more evenly.

[0030] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precise fault control and location device for a power distribution line, comprising a lower body (1) and an upper body (2) that cooperate with each other, wherein a high-altitude cable (3) is clamped in the internal grooves of the lower body (1) and the upper body (2), and a sealing cover (4) is installed on the upper body (2) by bolts, characterized in that, Also includes: The solar panel (5) is fixedly installed on the upper surface of the sealing cover (4); A current transformer (18) for drawing power from an overhead cable (3) is fixedly installed on the upper surface of the lower body (1), and a storage battery (6) and a rectifier (7) are fixedly installed inside the lower body (1). The storage battery (6) is electrically connected to the current transformer (18) through the rectifier (7). The first sealing gasket (10) is fixedly installed in the groove on the upper surface of the lower body (1) and the second sealing gasket (11) is fixedly installed in the groove on the lower surface of the upper body (2) and the second sealing gasket (11) is made of hollow rubber material. The lower body (1) has drainage holes (14) evenly spaced in the middle position, and the upper body (2) has a through hole (19) corresponding to the drainage holes (14) in the middle position, and the upper body (2) has ventilation holes (20) on the side, and a drying mechanism is provided inside the upper body (2).

2. The fault precise control and location device for power distribution lines according to claim 1, characterized in that: The upper body (2) is rotatably mounted with a connecting bolt (15) threadedly engaged with the lower body (1), and the lower surface of the upper body (2) is fixedly mounted with a limiting guide rod (16) that slides through the lower body (1), and the lower end of the connecting bolt (15) is fixedly mounted with an operating ring (17).

3. The fault precise control and location device for power distribution lines according to claim 2, characterized in that: The lower contact piece (8) connected to the rectifier (7) is fixedly installed on the upper surface of the lower body (1), and the upper contact piece (9) corresponding to the lower contact piece (8) is provided on the lower surface of the upper body (2), and the upper contact piece (9) is electrically connected to the solar panel (5).

4. The fault precise control and location device for power distribution lines according to claim 3, characterized in that: The upper contact piece (9) is fixedly installed between the upper body (2) and the compression airbag (12). The compression airbag (12) is connected to the second sealing gasket (11) through the connecting pipe (13), and the second sealing gasket (11) is aligned vertically with the first sealing gasket (10).

5. The fault precise control and location device for power distribution lines according to claim 1, characterized in that: The upper body (2) is fixedly installed with a flow guide plate (21) and heat dissipation fins (22), and the through hole (19) is connected to the interior of the upper body (2).

6. The fault precise control and location device for power distribution lines according to claim 1, characterized in that: The drying mechanism includes a mesh storage roller (23) rotatably mounted inside the upper body (2), and the storage roller (23) stores granular desiccant inside.

7. The fault precise control and location device for power distribution lines according to claim 6, characterized in that: The storage roller (23) has a wind turbine blade (24) fixedly installed on the outside of the upper body (2) at the pivot position, and an auxiliary motor (25) for assisting in driving the storage roller (23) to rotate is fixedly installed inside the upper body (2), and a reflector (2401) for repelling birds is fixedly installed on the outer surface of the wind turbine blade (24).

8. The fault precise control and location device for power distribution lines according to claim 7, characterized in that: The upper body (2) has a rotatable turbulence fan blade (26) mounted on its lower inner surface, and the position of the turbulence fan blade (26) corresponds to the position of the through hole (19).

9. A precise fault control and location device for power distribution lines according to claim 8, characterized in that: The upper surface of the turbulence fan blade (26) is fixedly equipped with a driven worm gear (27) for driving its rotation, and the driven worm gear (27) is meshed with a driving worm (28) on its side, and the driving worm (28) is rotatably connected to the interior of the upper body (2).

10. A precise fault control and location device for power distribution lines according to claim 9, characterized in that: The active worm gear (28) rotates synchronously with the storage roller (23) via a synchronous belt (29).

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