Edge IoT agent device and online monitoring system for power transmission lines

Abstract

The present invention discloses an edge IoT proxy device and an online monitoring system for power transmission lines. The edge IoT proxy device includes: an interface unit, a protocol conversion module and an edge computing module. The interface unit includes multiple interfaces that comply with at least two protocols. The interfaces are used to connect to sensors provided on the corresponding power transmission lines to receive data transmitted by the corresponding sensors. The protocol conversion module is connected to multiple interfaces to convert the data received by the interfaces into data that complies with the target protocol. The edge computing module is connected to the protocol conversion module to perform edge computing on the data that complies with the target protocol. The edge computing module is also used to connect to the platform server to transmit the calculation results obtained by the edge computing to the platform server. The edge IoT proxy device of the present invention is compatible with various types of sensors, and can perform local edge computing on the access data of various types of sensors, thereby reducing the computing pressure of the platform server.

Description

Technical Field

[0001] The present invention relates to the technical field of online power monitoring, and in particular to an edge IoT agent device and an online monitoring system for a power transmission line. Background Art

[0002] At present, the data from the online monitoring sensors of the transmission lines needs to be transmitted to the corresponding data aggregation terminal, and then forwarded by the data aggregation terminal to the platform server, which parses and processes the data.

[0003] As the demand for online monitoring of the status of power transmission line equipment increases, the types of monitoring increase. For each additional type of online monitoring sensor, the corresponding data aggregation terminal needs to be added simultaneously. The data aggregation terminal is generally installed on the transmission tower, resulting in redundant installation of equipment on the transmission tower and waste of resources. In addition, as the amount of terminal data increases, the data forwarded to the platform server will also cause computing pressure on the platform server. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art to at least some extent. To this end, the first object of the present invention is to provide an edge IoT proxy device that is compatible with various types of sensors and can perform local edge computing on access data of various types of sensors, thereby reducing the computing pressure of the platform server.

[0005] A second object of the present invention is to provide an online monitoring system for a power transmission line.

[0006] To achieve the above-mentioned objectives, the first aspect of the present invention provides an edge IoT agent device for online monitoring of power transmission lines, the device comprising: an interface unit, the interface unit comprising multiple interfaces conforming to at least two protocols, the interfaces being used to connect to sensors arranged corresponding to the power transmission lines to receive data transmitted by the corresponding sensors; a protocol conversion module, the protocol conversion module being connected to the multiple interfaces to convert the data received by the interfaces into data conforming to a target protocol; an edge computing module, the edge computing module being connected to the protocol conversion module to perform edge computing on the data conforming to the target protocol, the edge computing module being also used to connect to a platform server to transmit the calculation results obtained by edge computing to the platform server.

[0007] According to the edge IoT agent device of an embodiment of the present invention, the data transmitted by multiple sensors connected to the interface unit are converted into data that conforms to the target protocol through a protocol conversion module, and local edge computing is performed on the data that conforms to the target protocol, and the calculation results obtained by the local edge computing are transmitted to the platform server, thereby improving the compatibility with various sensors and reducing the computing pressure of the platform server.

[0008] To achieve the above-mentioned objectives, the second aspect of the present invention provides an online monitoring system for a power transmission line, comprising: a plurality of sensors arranged corresponding to the power transmission line; a platform server; an edge IoT agent device as described above, wherein the edge IoT agent device is connected to the sensors and the platform server respectively.

[0009] According to the online monitoring system of the power transmission line according to the embodiment of the present invention, the compatibility with various sensors can be improved through the above-mentioned edge IoT agent device, and the computing pressure of the platform server can be reduced.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural block diagram of an edge IoT proxy device according to an embodiment of the present invention;

[0012] Figure 2 A schematic diagram of multiple interface structures of an interface unit according to an embodiment of the present invention;

[0013] Figure 3 A schematic diagram of a tower tilt monitoring model according to an embodiment of the present invention;

[0014] Figure 4 A schematic diagram of windage monitoring of jumper wires according to an embodiment of the present invention;

[0015] Figure 5 A schematic diagram of a circuit with equal heights of jumper suspension points according to an embodiment of the present invention;

[0016] Figure 6 A schematic diagram of windage measurement of jumper wires according to an embodiment of the present invention;

[0017] Figure 7 This is a schematic diagram of a circuit in which the jumper suspension points are at different heights according to an embodiment of the present invention;

[0018] Figure 8 A schematic diagram of the location of the tension sensor according to an embodiment of the present invention;

[0019] Fig. 9 The structure block diagram of the online monitoring system of the power transmission line according to the embodiment of the present invention. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] Please refer to the following Figure 1-9 The invention describes an edge IoT agent device and an online monitoring system for power transmission lines according to an embodiment of the invention.

[0022] refer to Figure 1 As shown, the edge IoT proxy device 100 of the embodiment of the present invention may include an interface unit 10, a protocol conversion module 20 and an edge computing module 30. Among them, the interface unit 10 may include multiple interfaces that comply with at least two protocols, and the interfaces are used to connect with sensors provided on the corresponding power transmission lines to receive data transmitted by the corresponding sensors; the protocol conversion module 20 is connected to the multiple interfaces to convert the data received by the interfaces into data that complies with the target protocol; the edge computing module 30 is connected to the protocol conversion module 20 to perform edge computing on the data that complies with the target protocol, and the edge computing module 30 is also used to connect to the platform server to transmit the calculation results obtained by the edge computing to the platform server.

[0023] Specifically, multiple sensors arranged on the power transmission line can be connected to multiple interfaces with different communication protocols in the interface unit 10 on the edge IoT agent device 100 to transmit the collected data to the edge IoT agent device 100. The protocol conversion module 20 is respectively connected to multiple interfaces with different communication protocols to convert the data of different communication protocols received by each interface into data of the set target protocol, and then send the converted data conforming to the target protocol to the edge computing module 30. After the edge computing module 30 performs local edge computing, the computing result is sent to the platform server, thereby reducing the computing pressure of the platform server.

[0024] In this embodiment, if Figure 2As shown, the multiple interfaces in the interface unit 10 may include wireless interfaces and / or wired interfaces, the wireless interface may include at least one of a WIFI interface, a 4G interface, a 5G interface, a GPS positioning interface, a Beidou positioning interface, and a micro-power interface, and the wired interface may include at least one of a LAN interface and a 485 interface. Among them, the LAN interface and the 485 interface are both equipped with independent power output control, and the micro-power interface may include at least one of a 2.4G SmartMesh interface, a 433M wireless interface based on the IEEE802.15.4 standard, and a 2.4Glora interface. As a result, the edge IoT proxy device 100 in this embodiment can maximize compatibility with data transmission of sensors with various communication methods, thereby improving the compatibility of the edge IoT proxy device 100 with various types of sensors.

[0025] In one embodiment of the present invention, the protocol conversion module 20 may include at least two protocol conversion units, at least two protocol conversion units correspond one-to-one to at least two protocols, the protocol conversion units are connected to the corresponding interfaces, and the protocol conversion units are also connected to the edge computing module.

[0026] Specifically, the protocol conversion module 20 may include several protocol conversion units, such as two protocol conversion units, one protocol conversion unit corresponds to the serial communication protocol of the 485 interface, and the other protocol conversion unit corresponds to the wireless communication protocol of the WIFI interface. Among them, the protocol conversion unit corresponding to the serial communication protocol of the 485 interface is connected to the 485 interface, and the protocol conversion unit corresponding to the wireless communication protocol of the WIFI interface is connected to the WIFI interface. After performing protocol conversion on the data, the several protocol conversion units can transmit the data converted into the target protocol to the edge computing module 30 for local edge computing.

[0027] like Figure 3 As shown, the edge computing module 30 may include a first communication unit 31, a second communication unit 32 and at least two monitoring units 33. The first communication unit 31 is connected to the protocol conversion module 20, the second communication unit 32 is used to connect to the platform server, and the monitoring unit 33 is connected to the first communication unit 31 and the second communication unit 32 respectively.

[0028] Specifically, after the protocol conversion module 20 converts the data that conforms to the target protocol, it sends the converted data to the edge computing module 30 through the first communication unit 31. The edge computing module 30 performs local edge computing on the data through the monitoring unit 33, and transmits the calculation results to the platform server through the second communication unit 32 to reduce the computing pressure of the platform server.

[0029] In one embodiment of the present invention, at least two monitoring units 33 may include at least two of a tower tilt monitoring unit, a jumper windage monitoring unit, a sag monitoring unit and an icing monitoring unit, and the tower tilt monitoring unit, the jumper windage monitoring unit, the sag monitoring unit and the icing monitoring unit are all connected to the first communication unit 31 and the second communication unit 32, wherein the tower tilt monitoring unit is used to perform edge calculation on the tower tilt data that conforms to the target protocol to obtain the tilt condition of the tower; the jumper windage monitoring unit is used to perform edge calculation on the jumper windage data that conforms to the target protocol to obtain the windage condition of the jumper; the sag monitoring unit is used to perform edge calculation on the tilt data of the conductor suspension point that conforms to the target protocol to obtain the sag condition of the conductor suspension point; the icing monitoring unit is used to perform edge calculation on the tension data at the connection point between the insulator string and the crossarm that conforms to the target protocol to obtain the icing condition of the conductor.

[0030] In one embodiment of the present invention, the above-mentioned sensor may include a tilt sensor, which is arranged on a pole tower in a power transmission line to detect the inline tilt angle and lateral tilt angle of the pole tower. The edge computing module 30 is specifically used to: receive the inline tilt angle and lateral tilt angle that comply with the target protocol; calculate the comprehensive tilt angle based on the inline tilt angle and the lateral tilt angle; calculate the inclination value of the pole tower at a unit height in the inline direction, perpendicular to the conductor direction, and deviating from the center line direction based on the inline tilt angle, the lateral tilt angle and the comprehensive tilt angle.

[0031] Figure 3 FIG. 2 shows a tower tilt monitoring model according to an embodiment of the present invention. Figure 3 As shown in the figure, in the tower tilt monitoring model, the OX direction is the line direction, the OY direction is perpendicular to the conductor direction, and the OZ direction is the plumb bob direction. Figure 3 Where OA is the projection of OB on plane YOZ, OC is the projection of OB on plane XOZ, OB1 is the projection of OB on plane XOY, and OD is the height of the monitoring point from the ground. In this embodiment, the inclination sensor is arranged in the plumb direction to detect the inline inclination angle in the OX direction and the lateral inclination angle in the OY direction. The edge computing module 30 can calculate the comprehensive inclination angle according to the inline inclination angle and the lateral inclination angle detected by the inclination sensor according to the following formulas (1)-(5):

[0032]

[0033]

[0034]

[0035]

[0036]

[0037] Among them, θ1 is the angle between OD and OC, which is the inline tilt angle, θ2 is the angle between OD and OC, which is the lateral tilt angle, and θ3 is the angle between OB and OD, which is the comprehensive tilt angle.

[0038] Further, let Gx = tanθ1·1000, Gy = tanθ2·1000, Gs = tanθ3·1000. Among them, Gx is the inline inclination, Gy is the lateral inclination, and Gs is the comprehensive inclination. According to formula (5), the comprehensive inclination can be obtained

[0039] In this embodiment, the in-line inclination is the inclination value of the tower per unit height in the in-line direction, the lateral inclination is the inclination value of the tower per unit height in the direction perpendicular to the conductor, and the comprehensive inclination is the inclination value of the tower per unit height in the direction deviating from the centerline.

[0040] In one embodiment of the present invention, the sensor may also include a wind deviation sensor, which is arranged on a jumper in a power transmission line to detect the wind deviation angle of the jumper. The edge computing module 30 is specifically used to: receive a wind deviation angle that conforms to a target protocol; determine the maximum sag of the jumper and the distance between the connection point of the jumper and the tower; and calculate the electrical clearance of the jumper based on the maximum sag, the distance and the wind deviation angle.

[0041] Figure 4 FIG. 1 is a schematic diagram of windage monitoring for jumper wires according to an embodiment of the present invention. Figure 4 As shown, the edge computing module 30 in this embodiment can calculate the electrical clearance of the jumper according to the wind deviation angle detected by the wind deviation sensor, the distance between the connection point of the jumper and the tower, and the maximum sag, so as to realize wind deviation detection of the jumper.

[0042] like Figure 5 As shown in the figure, when the two suspension points of the jumper are at the same height, the maximum sag of the jumper can be calculated according to the following formula (6):

[0043]

[0044] Among them, f is the maximum sag, l is the distance between the two suspension points, g is the conductor load, and σ0 is the stress at the lowest point of the horizontal conductor.

[0045] like Figure 6 As shown, the windage angle of the jumper can be detected by the windage sensor, and the distance between the connection point of the jumper and the tower can be determined. Then, the electrical clearance of the jumper can be calculated according to the following formula (7):

[0046]

[0047] Among them, R is the electrical clearance of the jumper, L is the distance between the connection point of the jumper and the tower, f is the maximum sag, The wind angle that meets the target agreement.

[0048] In one embodiment of the present invention, the sensor may also include a sag sensor, which is arranged at the conductor suspension point in the power transmission line to detect the inclination angle of the conductor suspension point. The edge computing module 30 is specifically used to: receive the inclination angle of the conductor suspension point that complies with the target protocol; determine the span and height difference corresponding to the conductor suspension point; and calculate the sag of the conductor corresponding to the conductor suspension point based on the span, height difference and inclination angle of the conductor suspension point.

[0049] Figure 7 This is a schematic diagram of a circuit in which the jumper suspension points are at different heights according to an embodiment of the present invention. Figure 7 As shown, suspension point A and suspension point B are not at the same height. At this time, the inclination angle of suspension point A and the inclination angle of suspension point B can be detected by sag sensors installed at suspension point A and suspension point B respectively, and then the span and height difference between the two suspension points can be determined, and the maximum sag of the conductor corresponding to the conductor suspension point can be calculated based on the span and height difference and the inclination angle of the suspension point.

[0050] Specifically, calculating the sag of the conductor corresponding to the conductor hanging point according to the span, height difference and the inclination angle of the conductor hanging point may include: calculating the ratio between the height difference and the span, and performing a tangent operation on the inclination angle to obtain a tangent value; calculating the sum of the ratio and the tangent value; and calculating the sag of the conductor corresponding to the conductor hanging point according to the sum and the span.

[0051] As an example, the sag of the wire corresponding to the wire suspension point can be calculated by the following formula:

[0052]

[0053] Among them, l is the gear distance, h is the height difference, θ h is the inclination angle of the wire suspension point. When the wire suspension point is lower than another suspension point corresponding to the wire suspension point, h is a positive value. When the wire suspension point is higher than another suspension point corresponding to the wire suspension point, h is a negative value.

[0054] Specifically, see Figure 7 , the wire suspension point A is lower than the other suspension point B corresponding to the wire suspension point, then the formula Calculate the sag of the conductor corresponding to the conductor suspension point, where l is the span, h is the height difference, which is a positive value, and θ A is the inclination angle of the wire suspension point A; the wire suspension point B is higher than the other suspension point A corresponding to the wire suspension point, then the formula Calculate the sag of the conductor corresponding to the conductor suspension point, where l is the span, h is the height difference, which is a positive value, and θB is the inclination angle of the wire suspension point B.

[0055] In this embodiment, the maximum sag of the conductor can also be calculated by the following formula (8):

[0056]

[0057] Among them, f is the maximum sag of the conductor, w is the unit weight of the conductor, l is the span, H is the horizontal stress at any point of the conductor, and δ is the angle between the suspension point B and the horizontal direction.

[0058] In one embodiment of the present invention, the sensor may also include a tension sensor, which is arranged at the connection point between the insulator string and the cross arm in the power transmission line to detect the tension generated by the insulator string and the wire connected to the insulator string. The edge computing module 30 is specifically used to: receive the tension that meets the target protocol; determine the self-weight of the insulator string and the wire connected to the insulator string, the angle force generated by the non-vertical state of the insulator string, and the force generated by the wind load; calculate the gravity of the ice on the wire connected to the insulator string in the ice-covered state according to the tension, self-weight, angle force and wind load. The edge computing module 30 is also specifically used to: calculate the ice-covered volume and / or ice-covered thickness of the wire connected to the insulator string according to the gravity of the ice.

[0059] like Figure 8 As shown, the tension sensor can be arranged at the connection point between the insulator string and the cross arm in the power transmission line. The tension detected by the tension sensor in this embodiment may include the self-weight of the insulator string and the wire connected to the insulator string, the angle force generated by the non-vertical state of the insulator string, the gravity of ice in the wire connected to the insulator string in the ice-covered state, and the force generated by the wind load, that is:

[0060] f=f1+f2+f3+f4 (9)

[0061] Among them, f is the tension detected by the tension sensor, f1 is the self-weight of the insulator string and the wire connected to the insulator string, f2 is the angular force generated by the non-vertical state of the insulator string, f3 is the gravity of the ice on the wire connected to the insulator string in the ice-covered state, and f4 is the force generated by the wind load.

[0062] Furthermore, according to formula (9), the gravity of ice on the conductor connected to the insulator string in the ice-covered state can be obtained:

[0063] f3=f-f1-f2-f4 (10)

[0064] In this embodiment, the self-weight of the insulator string and the conductor connected to the insulator string can be obtained by the following formula:

[0065] f1=l straight ·gwire +g insulator (11)

[0066] Among them, l straight is the vertical span, i.e. the product of the vertical mass per unit length of the wire and the horizontal distance between the lowest points of the wires on both sides of the tower, g wire is the weight per unit length of the wire, g insulator is the weight of the insulator string.

[0067] In this embodiment, the angular force generated by the non-vertical state of the insulator string can be obtained by the following formula:

[0068] f2=fcosα (12)

[0069] Where α is the angle between the insulator string and the vertical direction.

[0070] In this embodiment, the lateral wind load generated by the wind acting on the wire is not the product of the theoretical wind pressure and the wind-receiving area of ​​the wire, but also needs to consider the wire body coefficient, the wind pressure unevenness coefficient related to the wind speed, the wind load adjustment coefficient related to the voltage level and wind speed, the wind speed height variation coefficient related to the average height of the wire, and the angle between the wind direction and the axial direction of the wire. Therefore, the force generated by the wind load in this embodiment can be obtained by the following formula:

[0071] f4=a·W0·u z ·u sc β c ·d·L p ·sin 2 θ (13)

[0072] Among them, a is the wind pressure unevenness coefficient, β c is the wind load adjustment factor for line conductors and ground wires, u z is the wind pressure height variation coefficient, u sc is the body coefficient of the conductor or ground wire, d is the outer diameter of the conductor or ground wire or the calculated outer diameter when covered with ice, L p is the horizontal spacing of the tower, θ is the angle between the wind direction and the conductor or ground wire direction, and W0 is the standard value of the benchmark wind pressure.

[0073] After the ice gravity f3 of the conductor connected to the insulator string in the ice-covered state is calculated according to formula (10), the ice-covered volume of the conductor connected to the insulator string can be calculated by the following formula:

[0074]

[0075] Where Vice is the ice volume of the conductor, Mice is the equivalent ice mass of the conductor, pice is the density of the ice, and g is the gravitational acceleration.

[0076] Furthermore, the equivalent ice thickness of the conductor can be calculated according to the following formula:

[0077]

[0078] Where κ is the equivalent ice thickness of the conductor, r wire is the wire radius.

[0079] To sum up, the edge IoT agent device of the embodiment of the present invention can realize the monitoring of pole tower inclination, jumper wind deviation, maximum sag of conductors, and ice volume and thickness of conductors, and can convert the data transmitted by multiple sensors connected to the interface unit for monitoring the above-mentioned conditions into data that conforms to the target protocol through the protocol conversion module, and perform local edge computing on a large amount of data that conforms to the target protocol, and then transmit the calculation results obtained by the local edge computing to the platform server, thereby improving the compatibility with various sensors and reducing the computing pressure of the platform server.

[0080] Fig. 9 FIG. 1 is a structural block diagram of an online monitoring system for a power transmission line according to an embodiment of the present invention. Fig. 9 As shown, the online monitoring system 1000 for the power transmission line may include the edge IoT agent device 100 described above, a plurality of sensors 200 and a platform server 300 arranged corresponding to the power transmission line, wherein the edge IoT agent device 100 is connected to the sensors 200 and the platform server 300 respectively.

[0081] The multiple sensors 200 in this embodiment may include at least two of the following sensors: a tilt sensor, a windage sensor, a sag sensor group, and a tension sensor. The tilt sensor is arranged on a pole tower in a power transmission line to detect the inline tilt angle and the lateral tilt angle of the pole tower; the windage sensor is arranged on a jumper in a power transmission line to detect the windage angle of the jumper; the sag sensor group includes a first sag sensor and a second sag sensor, and the first sag sensor and the second sag sensor are respectively arranged at two corresponding wire suspension points in the power transmission line to detect the tilt angle of the corresponding wire suspension points; the tension sensor is arranged at the connection point between the insulator string and the cross arm in the power transmission line to detect the tension generated by the insulator string and the wire connected to the insulator string.

[0082] The online monitoring system of the power transmission line of the embodiment of the present invention can realize the monitoring of tower inclination, jumper wind deviation, maximum sag of conductors, and ice volume and thickness of conductors through the above-mentioned edge IoT agent device, and can convert the data transmitted by multiple sensors connected to the interface unit for monitoring the above-mentioned states into data that conforms to the target protocol through the protocol conversion module in the edge IoT agent device, and perform local edge computing on a large amount of data that conforms to the target protocol, and then transmit the calculation results obtained by the local edge computing to the platform server, thereby improving the compatibility with various sensors and reducing the computing pressure of the platform server.

[0083] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0085] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0086] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0087] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An edge IoT proxy device, characterized in that: For online monitoring of power transmission lines, the device comprises: An interface unit, the interface unit comprising a plurality of interfaces conforming to at least two protocols, the interfaces being used to connect to sensors arranged corresponding to the power transmission line to receive data transmitted by the corresponding sensors; A protocol conversion module, the protocol conversion module is connected to the plurality of interfaces and is used to convert data received by the interfaces into data conforming to a target protocol; An edge computing module, the edge computing module is connected to the protocol conversion module to perform edge computing on the data that conforms to the target protocol, and the edge computing module is also connected to the platform server to transmit the calculation results obtained by the edge computing to the platform server; The sensor includes a tilt sensor, which is arranged on a tower in a power transmission line to detect the inline tilt angle and lateral tilt angle of the tower, and the edge computing module is specifically used for: receiving an in-line tilt angle and a lateral tilt angle in accordance with the target protocol; Calculating a comprehensive tilt angle according to the inline tilt angle and the lateral tilt angle; The inclination values ​​of the tower at a unit height in the inline direction, in the direction perpendicular to the conductor, and in the direction deviating from the center line are calculated respectively according to the inline inclination angle, the lateral inclination angle, and the comprehensive inclination angle.

2. The edge IoT proxy device according to claim 1, wherein: The sensor includes a wind deviation sensor, which is arranged on a jumper in the power transmission line to detect the wind deviation angle of the jumper, and the edge computing module is specifically used for: receiving a wind deflection angle consistent with the target protocol; Determine the maximum sag of the jumper and the distance between the connection point of the jumper and the tower; The electrical clearance of the jumper is calculated according to the maximum sag, the distance and the wind deflection angle.

3. The edge IoT proxy device according to claim 1, wherein: The sensor includes a sag sensor, which is arranged at a wire suspension point in the power transmission line to detect the inclination angle of the wire suspension point. The edge computing module is specifically used for: receiving a tilt angle of a wire suspension point that complies with the target protocol; Determine the span and height difference corresponding to the wire suspension point; The sag of the conductor corresponding to the conductor suspension point is calculated according to the span, the height difference and the inclination angle of the conductor suspension point.

4. The edge IoT proxy device as claimed in claim 3, characterized in that: The calculating the sag of the conductor corresponding to the conductor suspension point according to the span, the height difference and the inclination angle of the conductor suspension point comprises: Calculating the ratio between the height difference and the gear span, and performing a tangent operation on the inclination angle to obtain a tangent value; Calculating a sum of the ratio and the tangent value; The sag of the conductor corresponding to the conductor suspension point is calculated according to the sum value and the span.

5. The edge IoT proxy device as claimed in claim 4, characterized in that: The sag of the conductor corresponding to the conductor suspension point is calculated by the following formula: Wherein, l is the gear distance, h is the height difference, θ h is the inclination angle of the wire suspension point. When the wire suspension point is lower than another suspension point corresponding to the wire suspension point, h is a positive value. When the wire suspension point is higher than another suspension point corresponding to the wire suspension point, h is a negative value.

6. The edge IoT proxy device according to claim 1, wherein: The sensor includes a tension sensor, which is arranged at a connection point between an insulator string and a cross arm in the power transmission line to detect the tension generated by the insulator string and a wire connected to the insulator string. The edge computing module is specifically used for: receiving a pulling force in accordance with the target protocol; Determine the self-weight of the insulator string and the conductor connected to the insulator string, the angular force generated by the non-vertical state of the insulator string, and the force generated by the wind load; The gravity of ice on the conductor connected to the insulator string in an ice-covered state is calculated according to the tension, the deadweight, the angle force and the force generated by the wind load.

7. The edge IoT proxy device according to claim 6, wherein: The edge computing module is also specifically used for: The ice-coated volume and / or ice-coated thickness of the conductor connected to the insulator string is calculated according to the gravity of the ice.

8. The edge IoT proxy device according to any one of claims 1 to 7, characterized in that: The multiple interfaces include wireless interfaces and / or wired interfaces, the wireless interface includes at least one of a WIFI interface, a 4G interface, a 5G interface, a GPS positioning interface, a Beidou positioning interface, and a micro-power interface, and the wired interface includes at least one of a LAN interface and a 485 interface.

9. The edge IoT proxy device according to claim 8, wherein: The micro-power interface includes at least one of a 2.4G Smart Mesh interface, a 433M wireless interface based on the IEEE 802.15.4 standard, and a 2.4 Glora interface.

10. An online monitoring system for a power transmission line, characterized in that: include: A plurality of sensors are arranged corresponding to the power transmission line, wherein the plurality of sensors include a tilt sensor, and the tilt sensor is arranged on a tower in the power transmission line to detect an inline tilt angle and a lateral tilt angle of the tower; Platform server; The edge IoT proxy device according to any one of claims 1 to 9, wherein the edge IoT proxy device is connected to the sensor and the platform server respectively.

11. The online monitoring system for power transmission lines according to claim 10, characterized in that: The plurality of sensors further comprises at least one of the following sensors: A wind deviation sensor, the wind deviation sensor is arranged on a jumper in the power transmission line to detect a wind deviation angle of the jumper; A sag sensor group, the sag sensor group includes a first sag sensor and a second sag sensor, the first sag sensor and the second sag sensor are respectively arranged at two corresponding wire suspension points in the power transmission line to detect the inclination angle of the corresponding wire suspension points; A tension sensor is arranged at a connection point between an insulator string and a cross arm in the power transmission line to detect the tension generated by the insulator string and a conductor connected to the insulator string.

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