Sensing technology-based power transmission line stretching and paying-off process monitoring method, storage medium and sensing technology-based power transmission line stretching and paying-off process monitoring equipment

Abstract

The invention discloses a sensing technology-based power transmission line tension pay-off process monitoring method, a storage medium and equipment. The method comprises the following steps of: acquiring real-time tension of a traction rope in a power transmission line tension pay-off process through a fiber bragg grating tension sensor; the real-time pose of the paying-off tackle in the stretching paying-off process of the power transmission line is collected through a 3D MEMS attitude sensor; and if the real-time tension suddenly changes or the real-time pose offset exceeds the threshold value, it is indicated that abnormity exists in the tension pay-off process of the power transmission line, and shutdown inspection is needed. The optical fiber Bragg grating tension sensor and the 3D MEMS attitude sensor are adopted, electromagnetic interference can be avoided, the monitoring precision is improved, and the transmission line tension pay-off construction is developed towards informatization and intellectualization.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission line tensioning and paying-out, and in particular to a method, storage medium and equipment for monitoring the transmission line tensioning and paying-out process based on sensing technology. Background Art

[0002] During the transmission line tensioning and laying process, real-time monitoring of the line status can promptly discover problems in the transmission line tensioning and laying process, ensure the safety of the transmission line tensioning and laying process, and ensure the stable operation of the power system.

[0003] Currently, researchers monitor the tensioning and releasing process of transmission lines by deploying tension sensors and inclination sensors. However, these sensors require a stable power supply to function. Currently, the power supply problem is mainly solved by solar power supply, but this method is easily affected by weather changes. In addition, due to the strong electromagnetic field around the transmission lines, these sensors are prone to electromagnetic interference, which affects the accuracy of monitoring data. Furthermore, the durability and reliability of the sensor are also an important consideration. Long-term exposure to harsh environments will cause the performance of the sensor to gradually decline, thereby affecting the measurement accuracy. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a method, storage medium and equipment for monitoring the tensioning and paying-out process of a transmission line based on sensing technology, which adopts a fiber Bragg grating tension sensor and a 3D MEMS attitude sensor to avoid electromagnetic interference and improve monitoring accuracy.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a method for monitoring the tensioning and releasing process of a transmission line based on sensing technology, specifically comprising the following steps:

[0006] Step 1: Using a fiber Bragg grating tension sensor to collect the real-time tension of the traction rope during the tensioning and releasing process of the transmission line;

[0007] Step 2: Using a 3D MEMS attitude sensor to collect the real-time posture of the wire-laying pulley during the transmission line tensioning and laying process;

[0008] Step 3: If the real-time tension changes suddenly or the real-time posture deviation exceeds the threshold, it indicates that there is an abnormality in the transmission line tensioning and wire-laying process, and the work needs to be stopped for inspection.

[0009] Furthermore, there are three fiber Bragg grating tension sensors used in step 1, among which one fiber Bragg grating tension sensor is detachably mounted on the ball head hanging ring rod of the wire-laying pulley, and the other two fiber Bragg grating tension sensors are respectively arranged on the two side wing plates of the wire-laying pulley.

[0010] Furthermore, during the transmission line tensioning and paying out process, the two side wing plates of the pay-out pulley will produce a pair of tensile and compressive strains. By measuring the wavelength change of the fiber Bragg grating tension sensor on the two side wing plates, temperature-compensated strain calculation is performed, and the wavelength offset of the fiber Bragg grating tension sensor on the ball head hanging ring rod is calculated based on the temperature-compensated strain.

[0011] Furthermore, the temperature-compensated strain calculation process is:

[0012]

[0013] Where Δε represents the temperature compensated strain, Δλ1 represents the wavelength change of a fiber Bragg grating tension sensor on the wing plate, Δλ2 represents the wavelength change of another fiber Bragg grating tension sensor on the wing plate, and K ε represents the axial strain sensitivity of the fiber Bragg grating tension sensor, K T1 represents the thermo-optical effect on a fiber Bragg grating tension sensor, K T2 Represents the thermo-optical effect of another fiber Bragg grating tension sensor.

[0014] Furthermore, the calculation process of the wavelength offset Δλ of the fiber Bragg grating tension sensor of the ball head hanging ring rod is:

[0015] Δλ=K ε ·Δε+K T ΔT

[0016] Among them, K T It represents the thermo-optical effect of the fiber Bragg grating tension sensor on the rod of the ball head hanging ring, and ΔT represents the difference between the actual temperature and the standard operating temperature of the fiber Bragg grating tension sensor.

[0017] Furthermore, the wavelength offset of the fiber Bragg grating tension sensor is demodulated into tension through a demodulation system, and the demodulation system is composed of a broadband light source, a coupler, a demodulator and a host computer.

[0018] Furthermore, each fiber Bragg grating tension sensor is wrapped with a protective film.

[0019] Furthermore, the 3D MEMS attitude sensor used in step 2 is arranged at the center of the connecting plate of the wire-paying pulley, and the connecting plate is located on the lower side of the ball head hanging ring rod; when the 3D MEMS attitude sensor detects that the horizontal deviation angle of the wire-paying pulley exceeds 7° or the elevation angle exceeds 25°, the posture of the wire-paying pulley is abnormal.

[0020] Furthermore, the present invention also provides a computer-readable storage medium storing a computer program, wherein the computer program enables a computer to execute the method for monitoring the tensioning and paying-out process of a transmission line based on sensing technology.

[0021] Furthermore, the present invention also provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for monitoring the tensioning and releasing process of a transmission line based on sensing technology is implemented.

[0022] Compared with the prior art, the present invention has the following beneficial effects: the transmission line tensioning and releasing process monitoring method based on the sensing technology of the present invention realizes the real-time tension detection of the traction rope during the tensioning and releasing process of the power line through the fiber Bragg grating tension sensor, and has excellent anti-electromagnetic interference ability, especially in the environment with serious electromagnetic interference such as high-voltage transmission lines, it can realize accurate tension measurement, and the fiber Bragg grating tension sensor does not need power supply, and can be applied to the transmission line in the harsh environment, thereby improving the monitoring efficiency of the transmission line tensioning and releasing process; in addition, the real-time posture of the wire-releasing pulley during the tensioning and releasing process of the transmission line is collected through the 3D MEMS posture sensor, so as to improve the posture detection accuracy of the wire-releasing pulley. The transmission line tensioning and releasing process monitoring method of the present invention makes the transmission line tensioning and releasing construction develop in the direction of informatization and intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a flow chart of the method for monitoring the tensioning and paying-out process of a transmission line based on the sensing technology of the present invention;

[0024] Figure 2 It is a schematic diagram of the wire-laying block in the present invention;

[0025] Figure 3 is a schematic diagram of a demodulation system in the present invention;

[0026] Among them, 1-fiber Bragg grating tension sensor, 2-3D MEMS attitude sensor, 3-wing plate, 4-connecting plate, 5-ball head hanging ring, 6-traction rope. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings.

[0028] like Figure 1 The present invention is a flow chart of a method for monitoring the tensioning and releasing process of a power transmission line based on sensing technology, and the method for monitoring the tensioning and releasing process of a power transmission line specifically comprises the following steps:

[0029] Step 1: The real-time tension of the traction rope 6 during the tensioning and releasing process of the transmission line is collected by the fiber Bragg grating tension sensor 1. The fiber Bragg grating tension sensor 1 has excellent anti-electromagnetic interference capability, especially in an environment with severe electromagnetic interference such as a high-voltage transmission line, and can achieve accurate tension measurement. Moreover, the fiber Bragg grating tension sensor 1 does not require power supply and can be applied to transmission lines in harsh environments, thereby improving the monitoring efficiency of the transmission line tensioning and releasing process.

[0030] like Figure 2 There are three fiber Bragg grating tension sensors 1 used in the present invention, among which one fiber Bragg grating tension sensor is detachably mounted on the rod of the ball head hanging ring 5 of the wire-laying pulley, and the traction rope 6 passes through the ball head hanging ring 5. The other two fiber Bragg grating tension sensors are respectively arranged on the two side wing plates 3 of the wire-laying pulley. Each fiber Bragg grating tension sensor is wrapped with a protective film to prevent the fiber Bragg grating from being damaged. At the same time, it effectively protects the fiber Bragg grating from being affected by external factors, thereby improving the measurement accuracy. During the process of tensioning and paying off the power transmission line, a pair of tensile and compressive strains will be generated on the two side wing plates 3 of the wire-laying pulley. By measuring the wavelength change of the fiber Bragg grating tension sensor on the two side wing plates 3, temperature-compensated strain calculation is performed. The wavelength offset of the fiber Bragg grating tension sensor on the rod of the ball head hanging ring 5 is calculated through temperature-compensated strain calculation. Through temperature compensation, the cross-sensitivity problem between temperature and strain can be effectively solved, thereby improving the measurement accuracy of the fiber Bragg grating tension sensor. The wavelength offset of the fiber Bragg grating tension sensor is demodulated into tension by a demodulation system, such as Figure 3 The demodulation system consists of a broadband light source, a coupler, a demodulator and a host computer. At the fiber Bragg grating tension sensor, the optical signal generated by the broadband light source is transmitted and reflected, wherein the reflected light returns to the coupler and is guided to the demodulator. The demodulator is connected to the host computer to calculate the tension of the traction rope 6 in the ball head hanging ring 5.

[0031] The strain calculation process of temperature compensation in the present invention is:

[0032]

[0033] Where Δε represents the temperature compensated strain, Δλ1 represents the wavelength change of a fiber Bragg grating tension sensor on the wing plate, Δλ2 represents the wavelength change of another fiber Bragg grating tension sensor on the wing plate, and K ε represents the axial strain sensitivity of the fiber Bragg grating tension sensor, K T1 represents the thermo-optical effect on a fiber Bragg grating tension sensor, K T2 Represents the thermo-optical effect of another fiber Bragg grating tension sensor.

[0034] The calculation process of the wavelength offset Δλ of the fiber Bragg grating tension sensor of the ball head hanging ring 5 is as follows:

[0035] Δλ=K ε ·Δε+K T ΔT

[0036] Among them, K T It represents the thermo-optical effect of the fiber Bragg grating tension sensor on the rod of the ball head hanging ring, and ΔT represents the difference between the actual temperature and the standard operating temperature of the fiber Bragg grating tension sensor.

[0037] Step 2: Ensuring that the pay-out pulley maintains the correct posture during the tensioning and pay-out process is particularly important for reducing the risk of conductor damage and pay-out pulley failure. Therefore, the real-time posture of the pay-out pulley during the transmission line tensioning and pay-out process is collected through the 3D MEMS posture sensor 2, such as Figure 2 The 3D MEMS attitude sensor 2 is arranged at the center of the connecting plate 4 of the wire-paying pulley, and the connecting plate 4 is located at the lower side of the rod of the ball head hanging ring 5, so that the 3D MEMS attitude sensor 2 keeps synchronous movement with the axis of the wire-paying pulley. The 3D MEMS attitude sensor 2 can capture the acceleration changes of the wire-paying pulley along three mutually perpendicular axes, and then calculate the specific attitude angle of the wire-paying pulley.

[0038] Step 3: If the real-time tension changes suddenly or the real-time posture deviation exceeds the threshold, specifically, when the 3D MEMS posture sensor 2 detects that the horizontal deflection angle of the wire-laying pulley exceeds 7° or the elevation angle exceeds 25°, it indicates that there is an abnormality in the transmission line tensioning and laying process, and it is necessary to stop work for inspection to avoid safety hazards.

[0039] The transmission line tensioning and setting-out process monitoring method based on sensing technology of the present invention not only promotes the development of overhead transmission line tensioning and setting-out construction towards informatization and intelligence, but also conforms to the current trend of technological progress in the power industry. With the help of intelligent monitoring means, it can not only improve the quality and safety of tensioning and setting-out construction, but also ensure the stability and reliability of the project, while reducing the risks and costs in the construction process.

[0040] In a technical solution of the present invention, a computer-readable storage medium is provided, which stores a computer program, and the computer program enables a computer to execute the transmission line tensioning and paying-out process monitoring method based on sensing technology.

[0041] In a technical solution of the present invention, an electronic device is also provided, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for monitoring the tensioning and releasing process of a transmission line based on sensing technology is implemented.

[0042] In the embodiments disclosed in the present application, the computer storage medium can be a tangible medium that can contain or store a program for use by or in conjunction with an instruction execution system, device or equipment. The computer storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the above. More specific examples of computer storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0043] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0044] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A method for monitoring the tensioning and paying-out process of a transmission line based on sensing technology, characterized in that: The specific steps include: Step 1: Using a fiber Bragg grating tension sensor to collect the real-time tension of the traction rope during the tensioning and releasing process of the transmission line; Step 2: Using a 3D MEMS attitude sensor to collect the real-time posture of the wire-laying pulley during the transmission line tensioning and laying process; Step 3: If the real-time tension changes suddenly or the real-time posture deviation exceeds the threshold, it indicates that there is an abnormality in the transmission line tensioning and wire-laying process, and the work needs to be stopped for inspection.

2. According to the method for monitoring the tensioning and paying-out process of a transmission line based on sensing technology in claim 1, it is characterized in that: There are three fiber Bragg grating tension sensors used in step 1, among which one fiber Bragg grating tension sensor is detachably mounted on the ball head hanging ring rod of the wire-laying pulley, and the other two fiber Bragg grating tension sensors are respectively arranged on the two side wing plates of the wire-laying pulley.

3. The method for monitoring the tensioning and paying-out process of a power transmission line based on sensing technology according to claim 2 is characterized in that: During the process of tensioning and paying out the transmission line, the two side wing plates of the pay-out pulley will produce a pair of tensile and compressive strains. By measuring the wavelength change of the fiber Bragg grating tension sensor on the two side wing plates, the temperature-compensated strain calculation is performed, and the wavelength offset of the fiber Bragg grating tension sensor on the ball head hanging ring rod is calculated based on the temperature-compensated strain.

4. The method for monitoring the tensioning and paying-out process of a power transmission line based on sensing technology according to claim 3 is characterized in that: The temperature-compensated strain calculation process is: Where Δε represents the temperature compensated strain, Δλ1 represents the wavelength change of a fiber Bragg grating tension sensor on the wing plate, Δλ2 represents the wavelength change of another fiber Bragg grating tension sensor on the wing plate, and K ε represents the axial strain sensitivity of the fiber Bragg grating tension sensor, K T1 represents the thermo-optical effect on a fiber Bragg grating tension sensor, K T2 Represents the thermo-optical effect of another fiber Bragg grating tension sensor.

5. The method for monitoring the tensioning and paying-out process of a power transmission line based on sensing technology according to claim 4 is characterized in that: The calculation process of the wavelength offset Δλ of the fiber Bragg grating tension sensor of the ball head hanging ring rod is: Δλ=K ε ·No+K T ·ΔT Among them, K T It represents the thermo-optical effect of the fiber Bragg grating tension sensor on the rod of the ball head hanging ring, and ΔT represents the difference between the actual temperature and the standard operating temperature of the fiber Bragg grating tension sensor.

6. A method for monitoring the tensioning and paying-out process of a power transmission line based on sensing technology according to claim 5, characterized in that: The wavelength offset of the fiber Bragg grating tension sensor is demodulated into tension through a demodulation system, and the demodulation system is composed of a broadband light source, a coupler, a demodulator and a host computer.

7. The method for monitoring the tensioning and paying-out process of a power transmission line based on sensing technology according to claim 2 is characterized in that: Each fiber Bragg grating tension sensor is wrapped with a protective film.

8. The method for monitoring the tensioning and paying-out process of a power transmission line based on sensing technology according to claim 2 is characterized in that: The 3D MEMS attitude sensor used in step 2 is set at the center of the connecting plate of the wire-laying pulley, and the connecting plate is located on the lower side of the ball head hanging ring rod; when the 3D MEMS attitude sensor detects that the horizontal deflection angle of the wire-laying pulley exceeds 7° or the elevation angle exceeds 25°, the posture of the wire-laying pulley is abnormal.

9. A computer-readable storage medium storing a computer program, characterized in that: The computer program enables the computer to execute the method for monitoring the tensioning and paying-out process of a transmission line based on sensing technology as described in any one of claims 1 to 8.

10. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for monitoring the tensioning and paying-out process of a transmission line based on sensing technology as described in any one of claims 1 to 8 is implemented.

Images