Operation and maintenance auxiliary device and system of power transmission line

Abstract

The invention provides an operation and maintenance auxiliary device and system for a power transmission line, and relates to the technical field of electricity testing of the power transmission line and erection of a grounding wire, and the device comprises an iron tower end grounding device, a wire end grounding device, the grounding wire and an electricity testing monitoring module. Under the loading action of the unmanned aerial vehicle, driving the operation and maintenance auxiliary device of the power transmission line to fly into a first preset range of the target power transmission line; the electricity verification monitoring module carries out electricity verification processing on the target power transmission line; under the condition that the target power transmission line is not electrified, the iron tower end grounding device is moved from the unmanned aerial vehicle to the first iron tower or the second iron tower to be hung so that the iron tower end grounding device can be grounded, and the wire end grounding device is moved from the unmanned aerial vehicle to the target power transmission line to be hung so that the wire end grounding device can be grounded. The target power transmission line between the iron towers is short-circuited under the action of the grounding wire; electricity testing and grounding wire erecting structures are integrated, a to-be-operated and to-be-maintained power transmission line is grounded and short-circuited, and electricity testing and grounding wire erecting are achieved through one-time flight of the unmanned aerial vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of power testing and grounding wire installation of power transmission lines, and in particular to an operation and maintenance auxiliary device and system for power transmission lines. Background Art

[0002] During the operation, maintenance and overhaul of the transmission line, according to safety regulations, the operator needs to first test the power of the line to be overhauled, confirm that the line has been powered off, and then install the grounding wire. The purpose of installing the grounding wire is to ensure personal safety and the normal operation of electrical equipment. The overhaul line is connected to the ground or between the ground wires through the grounding copper wire, and the current caused by accidental power transmission on the overhaul transmission line is directly short-circuited to the ground, protecting on-site operators and operating instruments and equipment, preventing electric shock accidents caused by touching the live high-voltage lines, and ensuring personal safety.

[0003] The inventors have found that, firstly, the existing electricity testing method and grounding method generally require the drones to be controlled separately and independently. The process of electricity testing and grounding requires controlling the drone to take off and land back and forth many times, which is time-consuming and labor-intensive. Secondly, current drones generally use non-contact electricity testing, which is not very reliable and is prone to false alarms due to signal interference. In addition, when grounding the transmission line through a drone, additional operators are required to connect the grounding wire, traction rope and transmission line, which is further time-consuming and labor-intensive, and it is difficult to ensure operational safety. Summary of the invention

[0004] The purpose of the present invention is to provide an auxiliary device and system for operation and maintenance of power transmission lines. By integrating the structures for testing electricity and setting grounding wires, the power transmission line to be operated and maintained is grounded and short-circuited, and power testing and grounding wire setting can be achieved in one UAV flight, so as to alleviate the technical problem in the prior art that UAVs need to take off and land multiple times, which is time-consuming and labor-intensive.

[0005] In a first aspect, an embodiment of the present invention provides an operation and maintenance auxiliary device for a power transmission line, which is applied to a target power transmission line between a first tower and a second tower before operation and maintenance, and comprises: a tower end grounding device, a conductor end grounding device, a grounding wire and an electric detection monitoring module; The tower end grounding device is connected to one end of the grounding wire, and the other end of the grounding wire is connected to the conductor end grounding device; the electrical inspection monitoring module is arranged inside the conductor end grounding device; Under the loading effect of the UAV, the operation and maintenance auxiliary device of the power transmission line is driven to fly to a first preset range of the target power transmission line; The power inspection monitoring module performs power inspection on the target power transmission line; When the target transmission line is not energized, the tower-end grounding device is moved from the drone to the first tower or the second tower and hung on it to ground the tower-end grounding device, the wire-end grounding device is moved from the drone to the target transmission line and hung on it to ground the wire-end grounding device, and the target transmission line between the towers is short-circuited under the action of the grounding wire.

[0006] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation method of the first aspect, wherein the electrical testing monitoring module, under the loading action of the drone, performs electrical testing on the target transmission line within a second preset range; when it is detected that the target transmission line has power, an alarm operation is executed; when it is detected that the target transmission line has no power, a contact electrical testing operation is executed; wherein the second preset range is smaller than the first preset range.

[0007] In combination with the first aspect, an embodiment of the present invention provides a second possible implementation of the first aspect, wherein the tower-end grounding device, under the loading action of the drone, is moved from the drone to the first tower or the second tower for hanging, and under the action of the grounding of the first tower or the second tower, the tower-end grounding device is grounded.

[0008] In combination with the first aspect, an embodiment of the present invention provides a third possible implementation of the first aspect, wherein the probe in the electrical testing monitoring module, under the loading action of the drone, contacts the target insulator at a preset position on the target transmission line for electrical testing, so that the electrical testing monitoring module performs an alarm operation when it detects that the target transmission line has electricity.

[0009] In combination with the first aspect, an embodiment of the present invention provides a fourth possible implementation of the first aspect, wherein the wire end grounding device is moved from the drone to the target transmission line and connected thereto under the loading action of the drone when the electrical testing monitoring module detects that the target transmission line has no power.

[0010] In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein the grounding wire includes a signal grounding wire, one end of the signal grounding wire is connected to the signal ground of the electrical testing monitoring module, and the other end of the signal grounding wire is grounded under the action of grounding the first tower or the second tower.

[0011] In combination with the first aspect, the embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein the grounding wire further includes a short-circuit grounding wire; The short-circuit grounding wire is used to short-circuit the target power transmission line to the first iron tower or the second iron tower when the target power transmission line is free of electricity after contact verification.

[0012] In combination with the first aspect, an embodiment of the present invention provides a seventh possible implementation method of the first aspect, wherein the electrical testing monitoring module is also used to monitor in real time whether the grounding resistance value between the first hanging point of the wire-end grounding device on the target transmission line and the second hanging point of the tower-end grounding device on the first tower or the second tower exceeds a preset resistance threshold, and if so, an alarm operation is performed.

[0013] In combination with the first aspect, an embodiment of the present invention provides an eighth possible implementation of the first aspect, which also includes a transmission module and a positioning module; the transmission module is used to, in the event of an alarm, send the voltage data or grounding resistance data that generates the alarm, and the position data of the first tower or the second tower detected by the positioning module to the intelligent control device.

[0014] In a second aspect, an embodiment of the present invention further provides an operation and maintenance assistance system for a power transmission line, comprising the operation and maintenance assistance device for a power transmission line as described above, and also comprising a device for loading the drone and an intelligent control device connected thereto.

[0015] The embodiment of the present invention provides an operation and maintenance auxiliary device and system for a power transmission line, which integrates the devices for testing electricity and setting up grounding wires. The drone only needs to fly once to complete the operation of testing electricity and setting up grounding wires, thus saving the time and steps of landing and taking off again by the drone. The target power transmission line is first tested by the power testing monitoring module. If it is verified that the target transmission line is not energized, the drone is equipped with a tower-end grounding device and is hung on the tower at either end of the target transmission line. Since the tower itself is grounded, the tower-end grounding device is also grounded. Then, the drone is equipped with a conductor-end grounding device and is hung on the target transmission line to set up the grounding wire. At this time, under the action of the grounding wire between the tower-end grounding device and the conductor-end grounding device, the grounding wire short-circuits the target transmission line. At this point, the staff can perform operation and maintenance and repair operations on the transmission line again, thereby ensuring the safety of the staff.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A structural block diagram of an operation and maintenance auxiliary device for a power transmission line provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure and application of an operation and maintenance auxiliary device for a power transmission line provided by an embodiment of the present invention; Figure 3 A schematic diagram of an application scenario of an operation and maintenance auxiliary device for a power transmission line provided by an embodiment of the present invention; Figure 4 A flow chart of an application method of an operation and maintenance auxiliary device for a power transmission line provided in an embodiment of the present invention.

[0020] Icons: 001-transmission line; 002-insulator string; 003-pole tower; 005-tower end grounding device; 004-drone; 300-conductor end grounding device; 006-grounding wire; 007-electricity testing monitoring module; 008-alarm device; 009-probe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The testing of power transmission lines and the installation of grounding wires are two crucial operation links. They each play a key role in ensuring the safety of power transmission and the safety of maintenance personnel and equipment. However, these two steps traditionally require the use of different tools and equipment to complete them separately. The testing of power is mainly implemented through the testing monitoring device, which can detect whether the transmission line carries high voltage. The installation of grounding wires is an important means to ensure the safety of operators and the reliable operation of equipment in power operations. It forms a safe and reliable grounding system by establishing a low-resistance loop between the transmission wire and the earth, preventing large currents from flowing through the operator's body, effectively preventing electric shock accidents caused by abnormal power transmission of the line, and also protecting the instruments and equipment being repaired on the line. In actual operation, the installation of testing and grounding wires must strictly comply with safety regulations to ensure that the grounding resistance is within the specified range to achieve a safe and effective grounding effect.

[0023] The existing UAV electrical inspection technology is actually based on the non-contact electrical inspection principle because it cannot form a ground loop. Compared with the traditional contact electrical inspection monitoring device, it has higher safety and convenience. It does not require the operator to hold the insulating rod and directly contact the high-voltage line to form a loop. The UAV carries the electrical inspection monitoring device close to the transmission line and conducts electrical inspection through electric field induction technology, which solves the risk of electric shock to the operator. At the same time, the non-contact electrical inspection monitoring device can also quickly and accurately determine whether the line is energized, thereby improving work efficiency. However, due to the limitations of its working principle, the electrical inspection accuracy of the non-contact electrical inspection monitoring device is not as good as that of the traditional contact electrical inspection monitoring device. Especially in dual-circuit or multi-circuit transmission lines, when the power outage only stops one of the circuits and the other transmission circuits are powered normally, the non-contact electrical inspection monitoring device is difficult to accurately judge the energized state due to the interference of the adjacent energized lines, resulting in misjudgment or missed judgment; at the same time, the performance of the non-contact electrical inspection monitoring device is greatly affected by environmental factors. For example, in a strong electromagnetic field environment, the electrical detection monitoring device may be disturbed, which may lead to misjudgment or missed judgment. Therefore, the safety regulations clearly stipulate that at least two indications of different principles or sources should change to determine whether the device is energized. A single non-contact electrical detection method does not meet the safety regulations.

[0024] In the existing drone grounding wire hanging and removing method, the grounding wire hanging device is hung to the transmission line by the drone, and the hanging device is controlled to drop the grounding wire traction rope, one end of the traction rope is connected to the grounding wire, and the grounding wire is pulled to the joint end of the joint device through the other end of the traction rope for docking, thereby achieving grounding. The whole process is relatively time-consuming. At the same time, when the operator pulls the traction rope to pull the grounding wire to the grounding wire hanging device in the air, because the grounding wire has not yet been connected to the transmission line, the operator first touches the high-voltage transmission line through the traction rope, and there is a risk of electric shock.

[0025] Based on this, an operation and maintenance auxiliary device and system for a transmission line provided by an embodiment of the present invention can integrate the structures of electricity testing and grounding wire installation, short-circuit the transmission line to be operated and maintained, and realize electricity testing and grounding wire installation in one drone flight. It can also combine non-contact electricity testing and contact electricity testing to jointly determine the electricity testing results to ensure the accuracy of the electricity testing, so that the staff can perform operation and maintenance inspection and repair of the transmission line more safely and efficiently.

[0026] The following is a detailed description through examples.

[0027] Figure 1 A structural block diagram of an operation and maintenance auxiliary device for a power transmission line provided in an embodiment of the present invention.

[0028] The embodiment of the present invention provides an operation and maintenance auxiliary device for a power transmission line, which is applied to a target power transmission line between a first iron tower and a second iron tower before operation and maintenance and repair. Figure 1 , including: tower end grounding device, conductor end grounding device, grounding wire and electrical inspection monitoring module; The tower end grounding device is connected to one end of the grounding wire, and the other end of the grounding wire is connected to the conductor end grounding device; the electric detection monitoring module is arranged inside the conductor end grounding device; Under the loading effect of the UAV, the operation and maintenance auxiliary device of the power transmission line is driven to fly to a first preset range of the target power transmission line; The power inspection monitoring module performs power inspection on the target transmission line; When the target transmission line is not energized, the tower-end grounding device is moved from the drone to the first tower or the second tower and hung on it to ground the tower-end grounding device, the wire-end grounding device is moved from the drone to the target transmission line and hung on it to ground the wire-end grounding device, and the target transmission line between the towers is short-circuited under the action of the grounding wire.

[0029] In a preferred embodiment of actual application, the devices for testing electricity and setting up grounding wires are integrated, and the UAV only needs to fly once to complete the operations of testing electricity and setting up grounding wires, thus saving the time and steps of landing and taking off again. First, the target transmission line is tested for electricity through the electricity testing monitoring module. If it is verified that the target transmission line is not energized, the UAV is equipped with a tower-end grounding device and hung on the tower at either end of the target transmission line. Since the tower itself is grounded, the tower-end grounding device is also grounded. Then, the UAV is equipped with a conductor-end grounding device and hung on the target transmission line to set up the grounding wire. At this time, under the action of the grounding wire between the tower-end grounding device and the conductor-end grounding device, the grounding wire short-circuits the target transmission line. At this point, the staff can perform operation and maintenance and repair operations on the transmission line again, thereby ensuring the safety of the staff.

[0030] In some embodiments, the tower end grounding device 005 on the right and the conductor end grounding device 300 on the left are as shown in FIG. Figure 2 As shown, the tower-end grounding device 005 and the conductor-end grounding device 300 are connected via the middle grounding wire 006; the conductor-end grounding device 300 is also integrated with an electric test monitoring module 007, and a probe 009 is also provided at the bottom of the electric test monitoring module 007; when the non-contact electric test result is no electricity, the drone 004 hangs the right-side electric test monitoring module 007 on the first tower or the second tower, i.e., the angle steel part of the pole tower 003, and the electric test monitoring module 007 performs contact electric test again. When the contact electric test result is also no electricity, the drone 004 hangs the left-side conductor-end grounding device 300 on the target transmission line 001 to realize the installation of the grounding wire 006; Specifically, the power testing monitoring module 007, under the loading action of the drone 004, performs power testing on the target power transmission line 001 within the second preset range; when it is detected that the target power transmission line 001 has power, an alarm operation is executed; when it is detected that the target power transmission line 001 has no power, a contact power testing operation is executed.

[0031] Among them, the second preset range is smaller than the first preset range; it can be understood that the drone 004 can bring the power testing monitoring module 007 to the vicinity of the target transmission line 001 (within the second preset range) for non-contact power testing; if the target transmission line 001 is energized, the sensing element in the power testing monitoring module 007 can sense the electric field generated by the energized target transmission line 001, and then send an alarm signal, so that the alarm device 008 works and issues an alarm; if the non-contact power testing does not detect that the target transmission line 001 is energized, further contact power testing is performed.

[0032] First, when the non-contact electrical test fails to detect that the target transmission line 001 is energized, the tower-end grounding device 005, under the loading action of the drone 004, is moved from the drone 004 to the first tower or the second tower and is hung on it, and under the action of the grounding of the first tower or the second tower, the tower-end grounding device 005 is grounded.

[0033] It can be understood that the tower-end grounding device 005 on the drone 004 is transferred to the first tower or the second tower, that is, the pole tower 003, and the drone 004 is also carrying the wire-end grounding device 300 at this time; Secondly, the probe 009 in the power testing monitoring module 007, under the loading action of the drone 004, contacts the target insulator at a preset position on the target transmission line 001 for power testing, so that the power testing monitoring module 007 performs an alarm operation when it detects that the target insulator (target transmission line) has electricity.

[0034] It should be noted that the conductor end grounding device 300 is still on the drone 004 at this time. Driven by the drone 004, the probe 009 contacts the target insulator on the transmission line 001 to achieve contact-type electrical testing. The preset position can be pre-set to a specific position on the insulator string 002, such as the second insulator, the third insulator, the fourth insulator and the fifth insulator in the direction of the pole tower 003 to which the tower end wiring device is mounted. In actual applications, the operator can also select the target insulator to be contacted according to actual conditions. Among them, the closer the contact is to the insulator in the direction of the pole tower 003 to which the tower end wiring device is mounted, the higher the safety.

[0035] In some embodiments, the power test application scenario of the operation and maintenance auxiliary device of the transmission line 001 can be as follows: Figure 3 As shown, the drone 004 carries a complete set of integrated operation and maintenance auxiliary equipment for the transmission line 001 and flies to the right pole tower 003. The power testing monitoring module 007 finds that the target transmission line 001 has no electricity through non-contact power testing. According to safety regulations, the drone 004 first places the tower-end grounding device 005 on the angle steel beam closest to the connection between the target insulator of the target transmission line 001 to be grounded and the pole tower 003, so as to achieve grounding of the entire device.

[0036] The electrical test device adopts a dual test design that combines non-contact electrical test and contact electrical test. The drone 004 carries an integrated device to perform non-contact electrical test first. The non-contact electrical test can determine whether the target transmission line 001 is energized within a certain distance. If the target transmission line 001 is determined to be not energized, a contact electrical test is performed for final confirmation to ensure that the electrical test result is accurate. At the same time, a wireless sound and light alarm is integrated to give an audible and visual alarm for the electrical test result. When both electrical tests confirm that the line is not energized, the pilot can control the drone 004 to drive the conductor end grounding device 300 to install the grounding wire 006, so that the electrical test and the installation of the grounding wire 006 can be completed in one flight, which greatly improves the work efficiency while ensuring the safety of the operation.

[0037] For example, after the tower end grounding device 005 is placed on the angle steel of the pole tower 003 by the drone 004, the contact electrical test is started, that is, the probe 009 in the wire end grounding device 300 carried by the drone 004 contacts the target insulator of the target transmission line 001 to be tested for electrical grounding, and the contact electrical test is performed. At this time, the electrical test circuit of the target transmission line 001-target insulator-probe 009-pole tower 003-earth is formed. If it is determined that the target transmission line 001 is not energized, the alarm will display green.

[0038] On the basis of the above-mentioned embodiment, when the power testing monitoring module 007 detects that the target power transmission line 001 has no power, the conductor end grounding device 300 is moved from the drone 004 to the target power transmission line 001 and mounted on the drone 004 under the loading effect of the drone 004.

[0039] The conductor end grounding device 300 is mainly used to be hung on the target power transmission line 001 to be grounded, and to short-circuit the signal grounding wire carried by the conductor end 300 and the target power transmission line 001; At this time, the pilot can control the drone 004 to drive the wire end grounding device 300 to fly and hang it on the target transmission line 001, that is, the hanging point of the wire end grounding device 300 at this time, Figure 3 The position of the target insulator in becomes Figure 3 The location between the target transmission line 001 and the insulator string 002 is shown.

[0040] Here, the grounding wire 006 includes a signal grounding wire, one end of which is connected to the signal ground of the power testing monitoring module 007, and the other end of the signal grounding wire is grounded under the action of the grounding of the first tower or the second tower; the grounding wire 006 also includes a short-circuit grounding wire, which is used to short-circuit the target transmission line to the first tower or the second tower when the target transmission line is free of electricity after contact verification.

[0041] As a preferred embodiment, the electrical inspection monitoring module 007 is also used to monitor in real time whether the grounding resistance value between the first attachment point of the wire end grounding device 300 on the target transmission line 001 and the second attachment point of the tower end grounding device 005 on the first tower or the second tower exceeds a preset resistance threshold, and if so, the grounding resistance value is uploaded to the intelligent control device and an alarm operation is performed. Here, the intelligent control device may include a remote server, a host computer and other devices.

[0042] The first attachment point is Figure 3 The position between the target transmission line 001 and the insulator string 002 is shown, and the second hanging point is the position where the tower end grounding device 005 is hung on the tower 003.

[0043] The electrical testing monitoring module 007 provided in the embodiment of the present invention is installed inside the wire end grounding device 300. In addition to being used for non-contact electrical testing and contact electrical testing, it also monitors the resistance value of the grounding resistor. Once the grounding resistance value is detected to be greater than a preset resistance threshold, an abnormal alarm is issued.

[0044] The embodiment of the present invention ensures that the grounding wire 006 carried by the device and the target transmission line 001 are reliably grounded by monitoring the grounding resistance; if the target transmission line 001 is energized, the alarm will display red and sound an alarm, and the pilot will control the drone 004 to remove the tower-end grounding device 005 placed on the angle steel of the pole tower 003 and fly back to the ground, and after the power outage, the operation and maintenance auxiliary device of the transmission line 001 will be reused to perform the electricity test and set up the grounding wire 006.

[0045] The drone 004 of the embodiment of the present invention is equipped with the integrated equipment for erecting the electrical test and grounding wire 006 of the present invention. According to safety regulations, when the drone 004 flies to the pole tower 003 (the first tower or the second tower) corresponding to the target transmission line 001 to be tested, the electrical test monitoring module 007 starts to work. If the target transmission line 001 is detected to be energized by non-contact, a line energization alarm is issued, and the alarm alerts the operator; if the non-contact electrical test module of the drone 004 does not alarm when it flies to the second preset range on the side of the pole tower 003, the tower end grounding device 005 is placed on the angle steel of the insulator string 002 close to the pole tower 003, and then the probe 009 of the conductor end grounding device 300 contacts the target insulator at the preset position in the target transmission line 001 to perform contact electrical test. If there is no alarm, it is confirmed that the target transmission line 001 is not energized, and the alarm displays the line is not energized indication. At this time, the drone 004 directly hangs the wire end grounding device 300 on the connection position of the target transmission line 001 and the insulator string 002 to achieve grounding, so as to complete the entire process of power testing and grounding wire 006 hanging. At this time, the grounding wire 006 of the device is connected to the pole tower 003. Since the bottom of the pole tower 003 is directly grounded, the line forms a grounding path, and the grounding is completed, so that the drone 004 can complete the line power testing and grounding operations in one flight.

[0046] In some embodiments, a 4G transmission module and a Beidou / GPS positioning module are also included; the transmission module is used to send the voltage data or ground resistance data that generates the alarm, as well as the position data of the first tower or the second tower detected by the positioning module to the intelligent control device when an alarm occurs.

[0047] As an optional embodiment, a video surveillance device may also be included for collecting on-site photos and on-site video data; in the event of an alarm in the aforementioned embodiment, the on-site photos and on-site video data collected by the video surveillance device may also be sent to the intelligent control device through the transmission module.

[0048] In actual applications, after the integrated device completes the installation of the grounding wire 006, the operation and maintenance time is long, which may take several days. The built-in electrical inspection monitoring module 007 monitors the grounding resistance value in real time. Once it is detected that the grounding resistance value does not meet the safety regulations and is greater than the preset resistance threshold, an abnormal alarm is issued. The grounding resistance value that generates the alarm and the position data of the tower 003 where the abnormal situation occurs are transmitted to the intelligent control device so that the intelligent control device can handle it in time to ensure the safety of the operators. The intelligent control device may include a host computer, a cloud server and other devices.

[0049] As an optional embodiment, if an alarm occurs in the power test link of the aforementioned embodiment, the voltage data that generates the alarm and the position data of the tower 003 where the abnormal alarm occurs can also be transmitted to the intelligent control device. The device for integrating power test and grounding wire erection provided by the embodiment of the present invention has high safety, high intelligence, high efficiency, easy operation and low operating cost. At the same time, the grounding quality of the grounding wire can be monitored and located. The power test and grounding data are managed uniformly.

[0050] Figure 4 A flow chart of an application method of an operation and maintenance auxiliary device for a power transmission line provided in an embodiment of the present invention.

[0051] Reference Figure 4 , the method may include: In response to the task list issued by the operator to confirm the task, the operator prepares and checks the operation and maintenance auxiliary devices of the corresponding power transmission line, and then installs them on the drone; the pilot controls the drone to take off, and determines whether there is electricity based on the electric field strength value of the target power transmission line under the action of non-contact inspection method; If there is electricity, stop the power test, fly the drone back to land, and cut off the power line according to safety regulations / confirm the power outage operation before controlling the drone to take off again; If there is no electricity, the tower end grounding device is hung on the pole tower end to ground it, and the power detection monitoring module in the conductor end grounding device performs contact power detection to determine whether voltage is detected; If there is voltage, stop the power test, fly the drone back to land, and cut off the power supply of the line according to safety regulations / confirm the power outage operation, and then control the drone to take off again; If there is no voltage, the conductor terminal connection device is hooked up to the target transmission line to achieve grounding; After the operators complete the operation and maintenance of the target transmission line, they remove the grounding devices at the conductor end and the tower end.

[0052] The embodiment of the present invention utilizes a drone or other vehicle to test electricity and install ground wires. The test electricity and the installation of ground wires are designed in an integrated manner. The drone carrying the device can complete the test electricity and the installation of ground wires at one time. Under the premise of ensuring the safety of personnel, the efficiency of the test electricity and the installation of ground wires is greatly improved. The entire operation process fully complies with the requirements of safety regulations, and the grounding resistance is monitored online at the same time. When the grounding resistance is greater than the resistance value specified by the safety regulations, an alarm is issued.

[0053] In some embodiments, an embodiment of the present invention also provides an operation and maintenance assistance system for a power transmission line, including the operation and maintenance assistance device for a power transmission line as described above, and also including a drone for loading, and an intelligent control device connected thereto.

[0054] The operation and maintenance auxiliary system for a power transmission line provided in the embodiment of the present invention has the same technical features as the operation and maintenance auxiliary device for a power transmission line provided in the above embodiment, and therefore can also solve the same technical problems and achieve the same technical effects.

[0055] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0058] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0059] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0060] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed by the present invention, or can easily conceive of changes, or make equivalent replacements for some of the technical features therein. Such modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention.

Claims

1. A transmission line operation and maintenance auxiliary device, characterized in that: The application is before the target transmission line between the first tower and the second tower is operated and maintained, and includes: a tower end grounding device, a conductor end grounding device, a grounding wire and an electric detection monitoring module; The tower end grounding device is connected to one end of the grounding wire, and the other end of the grounding wire is connected to the conductor end grounding device; the electrical inspection monitoring module is arranged inside the conductor end grounding device; Under the loading effect of the UAV, the operation and maintenance auxiliary device of the power transmission line is driven to fly to a first preset range of the target power transmission line; The power inspection monitoring module performs power inspection on the target power transmission line; When the target transmission line is not energized, the tower-end grounding device is moved from the drone to the first tower or the second tower and hung on it to ground the tower-end grounding device, the wire-end grounding device is moved from the drone to the target transmission line and hung on it to ground the wire-end grounding device, and the target transmission line between the towers is short-circuited under the action of the grounding wire.

2. The operation and maintenance auxiliary device for a power transmission line according to claim 1, characterized in that: The power inspection monitoring module, when loaded by the UAV, performs power inspection on the target power transmission line within the second preset range; When it is detected that the target power transmission line has power, an alarm operation is performed; When it is detected that the target power transmission line has no power, a contact power test operation is performed; wherein the second preset range is smaller than the first preset range.

3. The operation and maintenance auxiliary device for power transmission lines according to claim 2, characterized in that: The tower-end grounding device is moved from the drone to the first tower or the second tower under the loading action of the drone, and is hung on the first tower or the second tower. The tower-end grounding device is grounded under the grounding action of the first tower or the second tower.

4. The operation and maintenance auxiliary device for power transmission lines according to claim 3, characterized in that: The probe in the power testing monitoring module, under the loading action of the drone, contacts the target insulator at a preset position on the target transmission line for power testing, so that the power testing monitoring module performs an alarm operation when it detects that the target transmission line has electricity.

5. The operation and maintenance auxiliary device for power transmission lines according to claim 4, characterized in that: The conductor end grounding device is moved from the drone to the target transmission line and connected thereto under the loading action of the drone when the power testing monitoring module detects that the target transmission line has no power.

6. The operation and maintenance auxiliary device for power transmission lines according to claim 5, characterized in that: The grounding wire comprises a signal grounding wire, one end of which is connected to the signal ground of the electrical testing monitoring module, and the other end of which is grounded under the action of the grounding of the first iron tower or the second iron tower.

7. The operation and maintenance auxiliary device for power transmission lines according to claim 6, characterized in that: The grounding wire also includes a short-circuit grounding wire; The short-circuit grounding wire is used to short-circuit the target power transmission line to the first iron tower or the second iron tower when the target power transmission line is free of electricity after contact verification.

8. The operation and maintenance auxiliary device for power transmission lines according to claim 7, characterized in that: The electrical testing monitoring module is also used to monitor in real time whether the grounding resistance value between the first hanging point of the wire end grounding device on the target transmission line and the second hanging point of the tower end grounding device on the first tower or the second tower exceeds a preset resistance threshold. If exceeded, an alarm operation is performed.

9. The operation and maintenance auxiliary device for power transmission lines according to claim 8, characterized in that: It also includes a transmission module and a positioning module; the transmission module is used to send the voltage data or grounding resistance data that generates the alarm, as well as the position data of the first tower or the second tower detected by the positioning module to the intelligent control device when an alarm occurs.

10. A transmission line operation and maintenance auxiliary system, characterized in that: The invention comprises an operation and maintenance auxiliary device for a power transmission line as described in any one of claims 1 to 9, and also comprises a device for loading the drone and an intelligent control device connected thereto.

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