CN101692541B - Overhauling and hooking method for earthing lines of power transmission lines - Google Patents

Abstract

The invention provides a power transmission line maintenance grounding wire and its hooking method, including a wire end clip that can be hooked and removed from the power transmission line, a grounding end fixing clip that can be firmly connected with the grounding end, and a grounding short connecting the two. route, the wire end clamp is also connected with an insulating rope for the hooking and removal of the wire end clamp, wherein a GPS information transceiver device is also installed on the ground terminal clamp, and the wire end clamp is also equipped with an upside-down hook and magnets. The present invention realizes accurate GPS positioning of the construction site for transmission line inspection and maintenance, avoids the danger of accidental hanging and dismantling and maintenance personnel going to the wrong position in the process of hanging the ground wire, reduces the difficulty of operation, and can be widely used in the inspection and maintenance of high-voltage transmission lines Ground protection.

Description

A method for connecting and disconnecting grounding wires for inspection and maintenance of power transmission lines

technical field

The invention relates to the field of grounding protection tools during maintenance of power transmission lines, in particular to a grounding wire for maintenance of power transmission lines and a mounting method thereof. the

Background technique

The grounding wire is a safety tool often used in electric power safety production. Power outage, power inspection, and grounding wire are important technical measures to ensure the safety of transmission line power outage maintenance. An important guarantee for safety and equipment security. Since the grounding wire is installed to protect the safety of the electrical maintenance personnel during operation, if the grounding wire is installed in the wrong position, it will not be able to protect the personnel; at the same time, if the grounding wire is not removed in time after the transmission line maintenance is completed, it will Causing vicious accidents of power transmission with ground wires, so preventing the occurrence of live wires hanging on ground wires and power transmission with ground wires is the key to the "five preventions" of transmission line electrical. the

The function of the grounding wire commonly used in grounding tools in existing transmission lines is relatively single. In actual maintenance and line reconstruction construction, when different lines on the same tower, different professions, and multiple working groups work, each grounding wire at multiple grounding points Because there is no collection and control of information sources, there is a lack of necessary information to ensure security. Especially when a number of co-managed high-voltage, long-distance lines cross provinces, networks, bureaus and other temporary operations, since there are many branch grounding points of distribution lines, involving multiple units such as power supply and users, comprehensive grounding information is required. However, existing grounding tools cannot provide such an information source, so it is easy for maintenance personnel to mistakenly board live poles and towers. the

According to the requirements of grounding tools, operation types, maintenance planning of the entire power grid, and specific implementation of operation standards, the existing main grounding wire safety protection methods are usually based on dispatching plans and unified power outage arrangements, and the number of grounding wire groups listed by the operating unit according to the work ticket Compared with the pole tower, after the whole line is powered off, a work order is issued; the staff handles the work ticket and explains the safety measures and dangerous points; On both sides of the section, multiple working groups need to take good grounding protection measures. When working at high altitude on poles, the higher the voltage level, the greater the distance between the grounding point and the wire, the larger the angle of rotation of the line pole tower, the longer the grounding wire is required, and the less easy it is for personnel to hang up when working; sometimes when there is wind, The hang time required for the job is just longer. During the operation process, the labor intensity of the personnel on and off the pole is high, which may easily cause muscle fatigue and cause danger. Especially the tower operators are prone to high-altitude fall accidents; due to the long suspension time of the ground wire, the working section is not protected, and other working groups cannot start working, which will affect the work progress and delay the work time. the

Contents of the invention

The technical problem to be solved by the present invention is: it is difficult to repair the grounding wire of the transmission line with the existing structure, the operation time is long, and due to the lack of the work permit person's command line information and the tower positioning information source, the maintenance personnel are prone to mistakenly board the live pole tower accident question. the

The technical solution of the present invention is: a transmission line inspection and maintenance grounding wire, including a wire end clip that can be connected to and removed from the transmission line, a grounding terminal fixing clip that can be tightly connected to the grounding terminal, and a grounding short-circuit wire connecting the two , the wire end clamp is also connected with an insulating rope for hooking and removing the wire end clamp, and it is characterized in that a GPS information sending and receiving device is also installed on the grounding terminal clamp. the

Further, the wire end clamp is also equipped with an upside-down hook and a magnet piece. the

A method for connecting a ground wire for transmission line maintenance, characterized in that it includes a work process for connecting a ground wire and a work process for removing a ground wire, wherein the work process for connecting a ground wire includes the following steps:

Step 1: Send and receive information, and confirm the command to suspend the grounding wire;

Step 2: The operator arrives at the command work site, receives GPS positioning information and sends it to the control center;

Step 3: Determine the location according to the work ticket and GPS positioning information, if it is correct, go to step 4, otherwise, go back to step 2;

Step 4: Hang the grounding wire, first ground the grounding end clamp, then put the insulating rope into the hook, use the insulating rope to hang the wire end clamp upside down on the wire, and loosen the insulating rope to separate it from the hook after completion;

Step 5: Send and receive information, and confirm that the operation of connecting the ground wire is completed;

The workflow of removing the ground wire includes the following steps:

Step 1: Send and receive information and confirm the command to remove the grounding wire;

Step 2: Receive GPS positioning information and send it to the control center;

Step 3: Determine the location according to the work ticket and GPS positioning information, if you agree, go to step 4, otherwise, go back to step 3;

Step 4: Remove the grounding wire, first remove the clamp at the end of the wire with an insulating rope, and then separate the fixing clip of the grounding end from the grounding point;

Step 5: Send and receive information, confirm the end of the ground wire removal, and withdraw the whole set of ground wire devices. the

Compared with the prior art, the present invention has the following advantages:

1. In the present invention, since a GPS information transceiver is installed on the grounding terminal clamp, the grounding tool information source is added, and the grounding information of the GPS fixed-point tower and the command line information of the work permitter can be provided. The work permitter can target multiple different locations. And the working group, issue instructions and obtain the grounding information of the line, ensure the correct location of the grounding wire suspension and the sharing of grounding information, avoid the danger of mistakenly hanging and dismantling and maintenance personnel going to the wrong position during the process of hanging the ground wire, and ensure maintenance Personnel safety. the

2. Since the present invention adopts an upside-down hook at the wire end clamp, and the upside-down method is adopted for the grounding clamp at the wire end, it solves problems such as excessively large line corner outside, large distance between UHV line conductors to the ground, long grounding wire, and swaying due to strong winds, etc. Difficult to solve, ensuring the suspension of the grounding clamp under various tower angles and certain wind deflection. the

3. The present invention achieves the purpose of attracting the steel core of the wire due to the addition of a magnet piece to the wire end clamp. The suction of the magnetic material makes the suspension ground wire more convenient to operate, especially not easy to be blown and displaced by strong winds. Increased the stability of the ground point adsorption and also improved the operational efficiency of the ground point. the

4. The grounding clip of the present invention adopts the structure of an upside-down hook and a magnet sheet, which reduces the difficulty of operation. The original work requires 2 people on the pole, but only 1 person is required to work on the pole in the present invention. The personnel can simply adjust the length and distance of the suspension point on the pole to optimize the length and distance, which saves labor and time, and reduces the working distance caused by excessive working distance. The sway caused by it ensures the stability of the center of gravity of the operator on the pole, which is easy to grasp and realizes safe and reliable operation.

5. Compared with traditional grounding tools, the present invention greatly reduces the difficulty of operation, reduces the labor intensity and working time of workers, indirectly ensures safe production, and improves labor efficiency. the

Description of drawings

Fig. 1 is the structural principle schematic diagram of transmission line overhaul grounding wire of the present invention;

In the figure: 1-GPS information sending and receiving device, 2-grounding terminal fixing clip, 3-grounding short circuit, 4-insulating rope, 5-upside-down hook, 6-lead wire end clamp, 7-magnet sheet. the

Fig. 2 is the electrical principle schematic diagram of GPS information transceiving device of the present invention;

In the figure: 10-microprocessor unit, 11-GPS module, 12-wireless data transmission module. the

Fig. 3 is a schematic diagram of the work flow of the connection method of the transmission line maintenance ground wire according to the present invention. the

Fig. 4 is a schematic diagram of the work flow of removing the ground wire of the method for connecting the ground wire for maintenance of the transmission line according to the present invention. the

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments. the

Referring to Fig. 1, the grounding wire for maintenance of transmission lines of the present invention includes a wire end clip 6 that can be hooked and removed from the transmission line, a grounding terminal fixing clip 2 that can be firmly connected with the grounding terminal, and a grounding short-circuit wire 3 that connects the two , the wire end clamp 6 is also connected with a high-strength insulating rope 4 for hooking and removing the wire end clamp, wherein, a GPS information transceiver 1 is also installed on the ground terminal clamp 2 . the

The wire terminal clamp 6 can adopt the grounding clamp structure of the prior art. Two symmetrically arranged clamping blocks are H-shaped butt joint, and a connecting hole is symmetrically arranged on the two clamping blocks respectively, and bolts are used to pass through the connecting holes at the intersections to form a joint. One body, a tension spring is set on the bolt, and the two legs of the spring respectively withstand the two clamping blocks to make them open at the force end, and the clamp at the other end is naturally closed. The clamp tail of the wire clamp is connected with an insulating rope 4 and a grounding short-circuit wire 3; an upside-down hook 5 is provided at the clamp on the same side connected to the insulating rope 4, and the up and down connection direction of the wire clamp can be changed by cooperating with the insulating rope; the grounding short Route 3 uses multi-strand annealed copper wires whose material and cross-sectional area meet the designed grounding short-circuit current capacity. The length is set according to different voltage levels. Various poles and towers with large rotation angles can be used conveniently. When connecting, use the same copper cable nose at both ends. After pressing with the soft copper wire pliers, fasten and crimp the copper nose with the ground terminal clamp 2 and the wire end clamp 6 with bolts respectively. The chuck of the wire end clamp 6 is provided with a shrapnel so that it will not automatically close when the hooking operation is opened. At the same time, the inner side of the hooking wire of the two clamps is designed to be semicircular, so that it can adapt to and clamp the wire when closing , the outer side of which is equipped with a magnet sheet 7 of high magnetic material, which can also be temporarily installed temporarily, so that when the wire end clamp 6 is close to the wire, because the wire has a ferrous steel core, the magnet sheet 7 can play a role in attracting and helping to hang. This speeds up the hookup. When specifically hooking up, open the chucks of the wire end wire clamp 6 and support them with shrapnel so that it will not automatically close. Hang upside down to approach the wire, and use the adsorption effect of the magnet sheet 7 to hook the wire. When the wire touches the supporting shrapnel, the shrapnel bounces off, and the wire clamp closes to clamp the wire and connect closely with the wire. Re-hang insulating rope 4 and loosen, make it disengage from barb. When dismantling, pull it down directly to disengage the wire, and realize the removal of the ground wire. the

The clamp body of the grounding terminal clamp 2 is [shaped, the left end is connected to the short-circuit wire, the upper end is opened with a hole, and the screw with the rotating handle is inserted, and the clamp block at the lower end is formed by screwing in and out of the screw to form a plane with the inner end of the clamp. The clamping surface is firmly connected with the ground terminal or ground electrode of the transmission line tower. the

A GPS information transceiving device 1 is installed on the ground terminal fixing clip 2 to obtain GPS fixed-point information and the instruction information issued by the work permit person for multiple different locations and work groups. It can track and obtain the grounding position and the grounding information of the line. the

GPS information transceiving device 1 comprises at least one global longitude and latitude receiving positioner GPS module 11, a wireless data transmission module 12 and a microprocessor unit 10 with memory, and above-mentioned equipment all adopts prior art and product and adopts battery power supply (in the figure not shown). Wherein the microprocessor unit 10 is respectively connected with the GPS module 11 and the wireless transmission module 12, and the microprocessor unit 10 usually adopts a single-chip microcomputer, and its main function is to control the GPS module 11 to collect and receive the ground point latitude and longitude and time data, and perform corresponding operations and processing Then control the wireless data transmission module 12 to send to the outside. The main function of the GPS module 11 is to collect and receive the longitude and latitude data of the tower where the maintenance is being carried out. The wireless data transmission module 12 can use GPRS technology, and its main function is to complete the remote wireless data transmission and reception of the device and realize the communication function of the device. the

The method for connecting the grounding wire for maintenance of the power transmission line includes a working process of connecting the grounding wire and a working process of removing the grounding wire. The operator uses the GPS information transceiver device of the grounding wire to receive GPS positioning information and sends it to the control center. The information is used to judge the position, and decide whether to carry out the operation of hooking the ground wire or removing the ground wire according to whether it is correct or not. the

As shown in Figure 3, the ground wire hooking work flow of the transmission line maintenance ground wire hooking method includes the following steps:

Step 1: Send and receive information, and confirm the command to suspend the grounding wire;

Step 2: The operator arrives at the command work site, receives GPS positioning information and sends it to the control center;

Step 3: Determine the location according to the work ticket and GPS positioning information, if it is correct, go to step 4, otherwise, go back to step 2;

Step 4: Hang the grounding wire, first ground the grounding end clamp, then put the insulating rope into the hook, use the insulating rope to hang the wire end clamp upside down on the wire, and loosen the insulating rope to separate it from the hook after completion;

Step 5: Send and receive information, and confirm that the operation of hooking the ground wire is completed. the

As shown in Figure 4, the method for connecting the ground wire for maintenance of the transmission line, after the maintenance work is completed, the work flow of removing the ground wire includes the following steps:

Step 1: Send and receive information and confirm the command to remove the grounding wire;

Step 2: Receive GPS positioning information and send it to the control center;

Step 3: Determine the location according to the work ticket and GPS positioning information, if you agree, go to step 4, otherwise, go back to step 3;

Step 4: Remove the grounding wire, first remove the clamp at the end of the wire with an insulating rope, and then separate the fixing clip of the grounding end from the grounding point;

Step 5: Send and receive information, confirm the end of the ground wire removal, and withdraw the whole set of ground wire devices. the

The GPS information sending and receiving device of the present invention not only realizes the GPS precise positioning of the construction site for power transmission line maintenance, but also realizes the sharing of line grounding information through wireless transmission of information. The position information of the line pole and tower is determined before the maintenance work starts, and work orders are issued to multiple different locations and working groups, which avoids the danger of mistaken hanging and dismantling and maintenance personnel going to the wrong position during the process of hanging the ground wire, ensuring Safety of line equipment and maintenance personnel. the

Claims (1)

1. an earthing lines of power transmission lines overhauling articulates and disconnects method, described earthing lines of power transmission lines overhauling comprises the conductor wire end wire clamp that can articulate and remove with transmission line, earth terminal geometrical clamp that can be fastenedly connected with earth terminal and the ground short circuit line that is connected both, described conductor wire end wire clamp also is connected with one and is used for the conductor wire end wire clamp and articulates insulation rope with dismantling operation, one GPS information transceiving device also is installed on the earth terminal geometrical clamp, described conductor wire end wire clamp is equipped with hook and flat thin magnet, it is characterized in that, comprise the hanging earthing conductor workflow and disconnect the ground wire workflow

Wherein the hanging earthing conductor workflow comprises the steps:

Step 1: receive and send messages, confirm to hang the earth connection instruction;

Step 2: the operating personnel arrives the instruction operating location, receives the GPS locating information and is sent to control centre;

Step 3: carry out location determination according to work ticket and GPS locating information, correct, enter step 4, otherwise, get back to step 2;

Step 4: hanging earthing conductor, earlier with earth terminal geometrical clamp ground connection, the rope that will insulate is again put into hook, utilizes the insulation rope that the conductor wire end wire clamp is hung upside down on the lead, and the insulation rope that comes loose after finishing breaks away from itself and hook;

Step 5: receive and send messages, confirm the hanging earthing conductor EO;

Disconnecting the ground wire workflow comprises the steps:

Step 1: receive and send messages, confirm to remove the earth connection instruction;

Step 2: receive the GPS locating information and be sent to control centre;

Step 3: carry out location determination according to work ticket and GPS locating information, agree, enter step 4, otherwise, get back to step 3;

Step 4: remove earth connection, with the insulation rope conductor wire end wire clamp is removed earlier, again earth terminal geometrical clamp and earth point are broken away from;

Step 5: receive and send messages, confirm to disconnect ground wire and finish, recall a complete set of grounding wire device.

Images