Power transmission line strain clamp temperature on-line monitoring system based on space power taking

Abstract

The invention provides a power transmission line strain clamp temperature on-line monitoring system based on space electricity taking, which comprises a temperature acquisition device arranged on a power transmission line and used for acquiring the temperature of the power transmission line, the temperature acquisition device is in communication connection with a data acquisition and forwarding device, the data acquisition and forwarding device is in communication connection with a cloud server, and the cloud server is in communication connection with the power transmission line. The cloud server is in communication connection with the monitoring host, and the data acquisition and forwarding device is connected with an induction power taking device; the temperature acquisition device acquires temperature information from temperature measurement points of the high-voltage transmission line, digitally processes the acquired temperature information, and actively sends the temperature information to the data acquisition and forwarding device through a digital wireless link, and the data acquisition and forwarding device reports the received temperature information of each temperature measurement point to the cloud server through GPRS. The measurement precision is high, real-time on-line measurement can be achieved, and the device is not prone to being blocked by external objects and being affected by the measurement position.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission line monitoring, and in particular relates to an online monitoring system for the temperature of a tension clamp of a power transmission line based on space power extraction. Background Art

[0002] Transmission line failures usually do not occur in a short period of time. There is a process from potential failure to functional failure. Effective online temperature monitoring technology for transmission lines can capture anomalies and issue early warnings.

[0003] Wires are current-induced heating devices. When current-carrying conductors are put into operation, a certain amount of electrical resistance will inevitably cause some power loss, thereby increasing the temperature of the current-carrying conductors. Among them, the parallel groove clamps used for tension jumper connections and the tension drain plates connected by bolts are parts that are more prone to heat up because poor connection of the drainage connectors causes the contact resistance to increase.

[0004] When the transmission line is carrying a heavy load, the contact resistance of the drain plate is large and it generates heat, which creates a vicious cycle. The contact resistance increases, the heating temperature increases, the oxidation contact resistance becomes larger, the heating becomes more serious, until the drain plate burns out, posing a great threat to the safe operation of the power grid. For this reason, infrared temperature measurement has become a necessary task to be carried out every year. Through temperature measurement, the overheating phenomenon can be discovered in time to facilitate further elimination and ensure the safe operation of the line. However, infrared temperature measurement requires manual on-site measurement, which has the disadvantages of poor accuracy, inability to measure online in real time, easy to be affected by obstructions, need to be aligned with the measured point, and limited in many locations.

[0005] Therefore, it is necessary to design an online temperature monitoring system for transmission line tension clamps based on space power supply, which has high measurement accuracy, can perform real-time online measurement, and is not easily affected by external objects and measurement position, in order to solve the current technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an online temperature monitoring system for transmission line tension clamps based on space power supply, which has high measurement accuracy, can perform real-time online measurement, and is not easily affected by obstruction by external objects and the measurement position.

[0007] The technical solution of the present invention is: an online monitoring system for the temperature of a tension clamp of a power transmission line based on space power extraction, comprising a temperature acquisition device arranged on the power transmission line for collecting the temperature thereof, the temperature acquisition device being communicatively connected to a data acquisition forwarding device, the data acquisition forwarding device being communicatively connected to a cloud server, the cloud server being communicatively connected to a monitoring host, and the data acquisition forwarding device being connected to an inductive power extraction device; The inductive power extraction device comprises an energy extraction module, a rectifier energy storage module is connected to the energy extraction module, a discharge control module is connected to the rectifier energy storage module, a voltage stabilizing module is connected to the discharge control module, and an output end of the voltage stabilizing module is connected to the data acquisition and forwarding device; The energy extraction module has an energy extraction electrode plate installed under the transmission line, and the energy extraction electrode plate is used to generate a spatial displacement current under the action of the alternating electric field generated by the transmission line. The energy extraction electrode plate is connected to the rectification energy storage module, and the rectification energy storage module is used to rectify the spatial displacement current into a direct current.

[0008] The energy acquisition module has an energy acquisition shell, a clamp seat is arranged on the top of the energy acquisition shell, the clamp seat and the energy acquisition shell are detachably fixedly connected, a wire groove starts from the top of the energy acquisition shell, and the energy acquisition electrode plate is arranged inside the energy acquisition shell.

[0009] A wire clamp plate is slidably arranged above the wire groove along the vertical direction, an adjusting screw is rotatably arranged on the wire clamp plate, and the adjusting screw is threadedly connected to the clamp seat.

[0010] A locking nut is threadedly sleeved on the adjusting screw rod, and the locking nut is abutted against or separated from the top of the clamping seat.

[0011] Two sliding guide rods parallel to the adjusting screw are symmetrically arranged on the top of the wire clamp plate, and the sliding guide rods are slidably connected to the clamp seat.

[0012] The wire clamp plate has an inverted "V"-shaped plate structure.

[0013] A first shell is fixedly provided at one end of the energy collection shell, and a second shell is fixedly provided at the other end of the energy collection shell; the rectifying energy storage module, the discharge control module, and the voltage stabilizing module are all arranged inside the first shell; the data acquisition and forwarding device is arranged inside the second shell.

[0014] Connecting plates are fixedly provided on both sides of the bottom of the clamp seat and both sides of the top of the energy extraction shell. The connecting plates between the clamp seat and the energy extraction shell are detachably fixedly connected by a bolt and nut mechanism.

[0015] The temperature acquisition device is a passive wireless temperature sensor.

[0016] The data acquisition module has a data forwarding control module, and the data forwarding control module is connected to a wireless transmission module and a wireless acquisition module. The wireless acquisition module is communicatively connected to the temperature acquisition device, and the wireless transmission module is communicatively connected to the cloud server.

[0017] Beneficial effects of the present invention: (1) In the present invention, the energy extraction plate is used to generate a spatial displacement current under the action of the alternating electric field generated by the transmission line, the rectifying energy storage module is used to rectify the spatial displacement current into a direct current and store energy, the discharge control module is used to control the discharge, and the voltage stabilizing module is used to provide a stable voltage to the data acquisition and forwarding device; (2) The temperature acquisition device collects temperature information from the temperature measurement points of the high-voltage transmission line, and after digital processing, actively sends the collected temperature information to the data acquisition and forwarding device through a digital wireless link. The data acquisition and forwarding device reports the received temperature information of each temperature measurement point to the cloud server via GPRS, and then uploads it to the monitoring host via Ethernet. The measurement accuracy is high, and it can measure online in real time, and it is not easily affected by external objects and measurement position. (3) A data acquisition and forwarding device can communicate with multiple temperature acquisition devices to transmit temperature data. The data acquisition and forwarding device and the temperature acquisition device can work normally as long as the line is energized; (4) Wireless communication is adopted between the temperature collection device and the data collection and forwarding device, which is isolated by high voltage and safe and reliable, and convenient for construction and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a principle block diagram of the online temperature monitoring system of the transmission line tension clamp based on space power supply in the present invention.

[0019] Figure 2 It is a principle block diagram of the inductive power extraction device in the present invention.

[0020] Figure 3 It is a principle block diagram of the data acquisition and forwarding device in the present invention.

[0021] Figure 4 This is one of the structural schematic diagrams of the data acquisition and forwarding device in the present invention.

[0022] Figure 5 This is the second structural diagram of the data acquisition and forwarding device in the present invention.

[0023] Figure 6 This is a principle block diagram of the energy acquisition module in the present invention. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limitations.

[0025] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 6As shown, the online monitoring system of the temperature of the tension clamp of the power transmission line based on space power supply includes a temperature collection device 1 arranged on the transmission line for collecting the temperature thereof, the temperature collection device 1 is communicatively connected with a data collection and forwarding device 2, the data collection and forwarding device 2 is communicatively connected with a cloud server 4, the cloud server 4 is communicatively connected with a monitoring host 5, and the data collection and forwarding device 2 is connected with an inductive power supply device 3; the inductive power supply device 3 has an energy supply module 31, the energy supply module 31 is connected with a rectifier energy storage module 32, the rectifier energy storage module 32 is connected with a discharge control module 33, the discharge control module 33 is connected with a voltage stabilizing module 34, and the output end of the voltage stabilizing module 34 is connected with the data collection and forwarding device 2; the energy supply module 31 has an energy supply plate 311 erected under the transmission line, the energy supply plate 311 is used to generate a spatial displacement current under the action of the alternating electric field generated by the transmission line, the energy supply plate 311 is connected with the rectifier energy storage module 32, and the rectifier energy storage module 32 is used to generate a spatial displacement current. for rectifying the spatial displacement current into a direct current; in this embodiment, the energy-taking plate 311 is used to generate a spatial displacement current under the action of the alternating electric field generated by the transmission wire, the rectifying energy storage module 32 is used to rectify the spatial displacement current into a direct current and store energy, the discharge control module 33 is used to control the discharge, and the voltage stabilizing module 34 is used to provide a stable voltage to the data acquisition and forwarding device 2; the temperature acquisition device 1 collects temperature information from the temperature measuring point of the high-voltage transmission line, and after digital processing, actively sends the collected temperature information to the data acquisition and forwarding device 2 through a digital wireless link, and the data acquisition and forwarding device 2 reports the temperature information received from each temperature measuring point to the cloud server 4 through GPRS, and then uploads it to the monitoring host 5 through Ethernet; a data acquisition and forwarding device 2 can communicate with multiple temperature acquisition devices 1 to transmit temperature data, and the data acquisition and forwarding device 2 and the temperature acquisition device 1 can work normally as long as the line is energized; wireless communication is adopted between the temperature acquisition device 1 and the data acquisition and forwarding device 2, high-voltage isolation, safe and reliable, and convenient for construction and maintenance.

[0027] In some embodiments, Figure 4 and 5As shown, the energy collection module has an energy collection shell 312, and a clamp seat 313 is arranged on the top of the energy collection shell 312. The clamp seat 313 and the energy collection shell 312 are detachably fixedly connected. A wire groove 314 begins at the top of the energy collection shell 312. The energy collection electrode plate 311 is arranged inside the energy collection shell 312. The energy collection shell 312 cooperates with the clamp seat 313 and is clamped and fixed to the outside of the transmission line through the wire groove 314. The energy collection shell 312 provides stable support for the energy collection electrode plate 311, so that the energy collection electrode plate 311 is fixedly mounted under the transmission line. When the transmission line is energized, the energy collection electrode plate 311 can generate a spatial displacement current under the action of the alternating electric field generated by the transmission line.

[0028] In some embodiments, in order to improve the stability of the energy collection shell 312 when installed on the outside of the transmission line, a wire clamp plate 3131 is slidably arranged above the wire trough 314 in the vertical direction, and an adjusting screw 318 is rotatably arranged on the wire clamp plate 3131, and the adjusting screw 318 is threadedly connected to the clamp seat 313; the adjusting screw 318 is rotated, and the threaded structure between the adjusting screw 318 and the clamp seat 313 drives the wire clamp plate 3131 to move up and down, thereby clamping the transmission line inside the wire trough 314, and because the wire clamp plate 3131 can move up and down, it can achieve the clamping of transmission lines of different diameters.

[0029] In some embodiments, a locking nut 3181 is threadedly mounted on the adjusting screw 318, and the locking nut 3181 is abutted against or separated from the top of the clamp seat 313. After the position of the wire clamp 3131 is adjusted by the adjusting screw 318, the locking nut 3181 is abutted against the top of the clamp seat 313, so that the adjusting screw 318 and the clamp seat 313 can be locked, so that the position of the wire clamp 3131 remains fixed.

[0030] In some embodiments, two sliding guide rods 319 parallel to the adjusting screw 318 are symmetrically arranged on the top of the wire clamp plate 3131, and the sliding guide rods 319 are slidingly connected to the clamp seat 313. The top of the wire clamp plate 3131 is slidingly connected to the clamp seat 313 through the sliding guide rods 319, thereby improving the stability of the wire clamp plate 3131.

[0031] In some embodiments, as a specific implementation of the wire clamp plate 3131, the wire clamp plate 3131 has an inverted "V"-shaped plate structure to facilitate adaptation to power transmission wires with different outer diameters.

[0032] In some embodiments, a first shell 317 is fixedly provided at one end of the energy collection shell 312, and a second shell 24 is fixedly provided at the other end of the energy collection shell 317; the rectifying energy storage module 32, the discharge control module 33, and the voltage stabilizing module 34 are all arranged inside the first shell 317; and the data acquisition and forwarding device 2 is arranged inside the second shell 24.

[0033] In some embodiments, connecting plates 315 are fixedly provided on both sides of the bottom of the clamp seat 313 and both sides of the top of the energy collection shell 312. The connecting plates 315 between the clamp seat 313 and the energy collection shell 312 are detachably fixedly connected via a bolt and nut mechanism 3151. The clamp seat 313 and the energy collection shell 312 are connected and fixed to the outside of the transmission line via the bolt and nut mechanism 3151. By removing the bolt and nut mechanism 3151, the clamp seat 313 and the energy collection shell 312 can be disassembled.

[0034] In some embodiments, the temperature acquisition device 1 is a passive wireless temperature sensor, and the passive wireless temperature sensor is a WX-AT03 passive micro wireless temperature sensor.

[0035] In some embodiments, the data acquisition module 2 has a data forwarding control module 22, and the data forwarding control module 22 is connected to a wireless sending module 21 and a wireless acquisition module 23, the wireless acquisition module 23 is communicatively connected to the temperature acquisition device 1, and the wireless sending module 21 is communicatively connected to the cloud server 4; wherein the wireless acquisition module 23 is a 433MHz wireless communication module, and the wireless acquisition module 23 and the temperature acquisition device 1 communicate through the 433MHz wireless frequency band, and the wireless sending module 21 is a GPRS communication module, and the wireless sending module 21 communicates with the cloud server 5 through the wireless sending module 21.

[0036] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0037] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An online monitoring system for the temperature of a transmission line tension clamp based on space power extraction, characterized in that: It includes a temperature acquisition device arranged on the transmission line for collecting its temperature, the temperature acquisition device is communicatively connected with a data acquisition forwarding device, the data acquisition forwarding device is communicatively connected with a cloud server, the cloud server is communicatively connected with a monitoring host, and the data acquisition forwarding device is connected with an inductive power acquisition device; the inductive power acquisition device has an energy acquisition module, the energy acquisition module is connected with a rectifier energy storage module, the rectifier energy storage module is connected with a discharge control module, the discharge control module is connected with a voltage stabilizing module, and the output end of the voltage stabilizing module is connected with the data acquisition forwarding device; the energy acquisition module has an energy acquisition plate erected under the transmission line, the energy acquisition plate is used to generate a spatial displacement current under the action of an alternating electric field generated by the transmission line, the energy acquisition plate is connected with the rectifier energy storage module, and the rectifier energy storage module is used to rectify the spatial displacement current into a direct current.

2. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 1 is characterized in that: The energy acquisition module has an energy acquisition shell, a clamp seat is arranged on the top of the energy acquisition shell, the clamp seat and the energy acquisition shell are detachably fixedly connected, a wire groove starts from the top of the energy acquisition shell, and the energy acquisition electrode plate is arranged inside the energy acquisition shell.

3. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 2 is characterized in that: A wire clamp plate is slidably arranged above the wire groove along the vertical direction, an adjusting screw is rotatably arranged on the wire clamp plate, and the adjusting screw is threadedly connected to the clamp seat.

4. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 3 is characterized in that: A locking nut is threadedly sleeved on the adjusting screw rod, and the locking nut is abutted against or separated from the top of the clamping seat.

5. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 2 is characterized in that: Two sliding guide rods parallel to the adjusting screw are symmetrically arranged on the top of the wire clamp plate, and the sliding guide rods are slidably connected to the clamp seat.

6. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 2 is characterized in that: The wire clamp plate has an inverted "V"-shaped plate structure.

7. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 1 is characterized in that: A first shell is fixedly provided at one end of the energy collection shell, and a second shell is fixedly provided at the other end of the energy collection shell; the rectifying energy storage module, the discharge control module, and the voltage stabilizing module are all arranged inside the first shell; the data acquisition and forwarding device is arranged inside the second shell.

8. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 1 is characterized in that: Connecting plates are fixedly provided on both sides of the bottom of the clamp seat and both sides of the top of the energy extraction shell. The connecting plates between the clamp seat and the energy extraction shell are detachably fixedly connected by a bolt and nut mechanism.

9. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 1 is characterized in that: The temperature acquisition device is a passive wireless temperature sensor.

10. The online monitoring system for the temperature of the tension clamp of a power transmission line based on space power extraction according to claim 1 is characterized in that: The data acquisition module has a data forwarding control module, and the data forwarding control module is connected to a wireless transmission module and a wireless acquisition module. The wireless acquisition module is communicatively connected to the temperature acquisition device, and the wireless transmission module is communicatively connected to the cloud server.

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