CN103001141A - Method for mounting anti-waving spacers on 66-kilovolt power transmission hot-line - Google Patents

Abstract

The invention relates to the field of live work on transmission lines, in particular to a live installation method for anti-galling spacers on a 66 kV transmission line, which is characterized in that the operator first uses an equipotential operation method to fix one end of the anti-galling spacer on the transmission line On the lower wire, and then use the intermediate potential operation method to connect and fix the other end of the anti-galling spacer with the middle wire. Compared with the prior art, the beneficial effects of the present invention are: 1) This operation method is safer than the common live work method, especially the use of the intermediate potential operation of the middle conductor instead of the equipotential operation of the middle conductor, the method can better protect the live workers, and It is of great significance to prevent icing, strong wind and dancing disasters, and ensure the safe and stable operation of transmission lines. 2) It is not subject to power outage time, and the operation is convenient and quick. 3) It can reduce 70% of the power outage installation time, increase the electricity sales of power supply enterprises, improve the reliability of power supply, and improve the service quality of power supply enterprises. The social benefits are very significant.

Description

Live installation method of anti-galling spacer on 66 kV transmission line

technical field

The invention relates to the field of live work on transmission lines, in particular to a live installation method for anti-galling spacers on a 66 kV transmission line.

Background technique

Since the beginning of winter in 2009, affected by severe weather such as strong winds, rain, snow and freezing, the transmission lines in the power supply area of the State Grid Corporation of China have experienced seven large-scale dances, causing huge economic losses. Through the theoretical calculation and statistical analysis of line galloping, it is proved that the key link of "the center line must move" of the 66 kV double-circuit line on the same tower, and the principle of "controlling the middle and lower line galloping" is established. The best way is to install anti-galling spacers to thoroughly Cut off the dancing tripping path.

In the past, the method of installing anti-galling spacers, one is power-off installation. With the development of society and the company's own requirements, improving the reliability of power supply has attracted more and more attention from the society and power supply companies. Power-off installation is not completely applicable: another The second is live work, using the equipotential method to install anti-galling spacers. However, due to the short distance between the 66kV phases, the distance between the neutral line and the downline does not meet the requirements of the "State Grid Corporation Electricity Safety Work Regulations", and the equipotential of the spacers cannot be carried out. Install.

Contents of the invention

The object of the present invention is to provide a live installation method for anti-galling spacers on a 66 kV transmission line. Equipotential and intermediate potential methods are used to install anti-galling spacers between the center line and the downline of the transmission line to avoid damage caused by conductor galloping. It can reduce the loss of power supply caused by installing anti-galling devices due to power failures, and improve the reliability of power supply.

To achieve the above object, the present invention is achieved through the following technical solutions:

The live installation method of the anti-galling spacer on the 66 kV transmission line, the operator first adopts the equipotential operation method to fix one end of the anti-galling spacer on the lower conductor of the transmission line, and then uses the intermediate potential operation method to install the anti-galling spacer The other end of the rod is connected and fixed with the middle wire, and the specific operation steps are as follows:

1) At the beginning of the operation, the ground operator carefully checks the insulation rope to confirm that there is no damage or deformation; use a 2500kV and above insulation shaker to conduct insulation tests on the insulation rope, insulation operating rod, insulation ladder and protection rope, and the resistance value should not be lower than 700MΩ, clean and dry gloves should be worn when inspecting and operating insulating tools;

2) The operators on the tower carry insulating ropes and pulleys to climb to the overhead lightning protection wire at the top of the tower; the ground operators fix the protective rope on the upper end of the insulating ladder, check that the conductors of the tower at both ends of the working span are well grounded, and pass the insulating ladder and walking Line pulley to the overhead lightning line;

3) The operator on the tower hangs the insulating ladder and the cable trolley on the overhead lightning protection wire, and then the ground operator moves the insulating ladder and the cable trolley to the working position of the wire;

4) The live operator carries the pulley to climb the insulating soft ladder. At this time, the ground operator pulls the protective rope to assist and protect the live operator. After the live operator enters the electric field and reaches the working position, fasten the double safety belt and hang the tackle on the upper wire. superior;

5) After entering the electric field, carry out equipotential work. The ground operator will use the pulley to transfer the connecting wire clamp 1 and the insulating operating rod 1 to the working part. Pass the anti-galling spacer bar, and the live working personnel will firmly connect one end of the anti-galling spacer bar to the connecting wire clamp;

6) To carry out intermediate potential work, the live operator uses the insulating operating rod 1 to connect the connecting wire clamp 2 to the middle conductor, and then connects the other end of the anti-galling spacer to the connecting wire clamp 2. After checking that all connections are firm, live work The personnel carry the pulley and return to the ground along the insulating ladder, the ground operator pulls the insulating ladder back to the pole tower, and the operator on the tower uses the insulating operating rod 2 to remove the insulating ladder, passes it down the tower, removes the pulley, and returns to the ground, the operation is completed .

Compared with the prior art, the beneficial effects of the present invention are: 1) This operation method is safer than the common live working method, and greatly reduces the risk of equipotential work, especially the use of middle conductor intermediate potential work instead of medium conductor equipotential work , the method can better protect live workers and realize safe production, which is of great significance to prevent and control icing, strong wind and dancing disasters, and ensure the safe and stable operation of transmission lines. 2) It is not limited by power failure time, working environment, workers and tools, the method is simple, the application range is wide, and the operation is convenient and quick. 3) After the promotion, it can reduce 70% of the power outage installation time, increase the electricity sales of power supply enterprises, improve the reliability of power supply, and improve the service quality of power supply enterprises. The indirect social benefits are very significant.

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of the working method of the present invention.

In the figure: 1-live workers 2-anti-galling spacer 3-lower wire 4-middle wire 5-upper wire 6-connection clamp 1 7-connection clamp 2 8-overhead lightning protection wire 9-insulation ladder 10-insulation joystick one

Detailed ways

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

See Fig. 1, it is the live installation method embodiment schematic diagram of anti-galling spacer bar on 66 kilovolt transmission line of the present invention, and live operator 1 adopts equipotential operation method earlier, fixes the down conductor 3 of transmission line by one end of anti-galling spacer bar 2 Then use the intermediate potential operation method to connect and fix the other end of the anti-galling spacer 2 with the middle conductor 4, so as to avoid the risk of the second equipotential operation by live workers and realize live installation. The specific operation steps are as follows:

1) At the beginning of the operation, the ground operators carefully check the insulating rope to confirm that there is no damage or deformation; the ground operators use a 2500kV and above insulation shaker to conduct insulation tests on the insulating rope, insulating operating rod, insulating soft ladder and protective rope. The resistance value should be Not less than 700MΩ, clean and dry gloves should be worn when operating and inspecting insulating tools;

2) The operators on the tower carry the insulating rope 1 and the pulley to climb to the 8 overhead lightning protection wires at the top of the tower; Insulated soft ladder 9 and cable trolley to overhead lightning conductor 8;

3) The operator on the tower hangs the insulating ladder and the wiring block on the overhead lightning protection line, and then the ground operator tightens the protection rope to move the insulating ladder and the routing block to the working position of the wire;

4) The live working personnel tie the protective rope to the portable double safety safety belt, and carry the pulley to climb the insulating ladder. At this time, the ground operator pulls the protective rope to assist and protect the live working personnel. After the live working personnel enter the electric field and arrive at the working position, Fasten the double safety belt, and hang the tackle on the upper wire 5;

5) After entering the electric field, carry out equipotential work, the ground operator will use the pulley and insulating rope 2 to transfer the connecting wire clip 16 and the insulating operating rod 10 to the working part, and the live working personnel will install and fasten the connecting wire clip 16 under the On the wire 3, then the ground operator passes the anti-galling spacer 2, and the live operator 1 firmly connects one end of the anti- galloping spacer to the connecting wire clip-6;

6) For intermediate potential work, live workers use the insulating operating rod 10 to connect the connecting wire clamp 2 7 to the middle conductor 4 firmly, and use the insulating operating rod 10 to connect the other end of the anti-galling spacer 2 to the connecting wire clamp 2 7 After checking that all the connections are firm, the live operator carries the block and returns to the ground along the insulating ladder 9. The ground operator pulls the insulating ladder 9 back to the pole tower. Go down the tower, remove the pulley, return to the ground, and the work is completed.

Claims (1)

The live installation method of the anti-galling spacer on the 1.66 kV transmission line is characterized in that the operator first adopts the equipotential operation method to fix one end of the anti- gallop spacer on the lower conductor of the transmission line, and then uses the intermediate potential operation method, Connect and fix the other end of the anti-galling spacer to the middle wire, and the specific operation steps are as follows: 1) At the beginning of the operation, the ground operator carefully checks the insulation rope to confirm that there is no damage or deformation; use a 2500kV and above insulation shaker to conduct insulation tests on the insulation rope, insulation operating rod, insulation ladder and protection rope, and the resistance value should not be lower than 700MΩ, clean and dry gloves should be worn when inspecting and operating insulating tools; 2) The operators on the tower carry insulating ropes and pulleys to climb to the overhead lightning protection wire at the top of the tower; the ground operators fix the protective rope on the upper end of the insulating ladder, check that the conductors of the tower at both ends of the working span are well grounded, and pass the insulating ladder and walking Line pulley to the overhead lightning line; 3) The operator on the tower hangs the insulating ladder and the cable trolley on the overhead lightning protection wire, and then the ground operator moves the insulating ladder and the cable trolley to the working position of the wire; 4) The live operator carries the pulley to climb the insulating soft ladder. At this time, the ground operator pulls the protective rope to assist and protect the live operator. After the live operator enters the electric field and reaches the working position, fasten the double safety belt and hang the tackle on the upper wire. superior; 5) After entering the electric field, carry out equipotential work. The ground operator will use the pulley to transfer the connecting wire clamp 1 and the insulating operating rod 1 to the working part. Pass the anti-galling spacer bar, and the live working personnel will firmly connect one end of the anti-galling spacer bar to the connecting wire clamp; 6) For intermediate potential work, the live operator uses the insulating operating rod 1 to connect the connecting wire clamp 2 to the middle conductor, and then connects the other end of the anti-galling spacer to the connecting wire clamp 2. After checking that all connections are firm, live work The personnel carry the pulley and return to the ground along the insulating ladder, the ground operator pulls the insulating ladder back to the pole tower, and the operator on the tower uses the insulating operating rod 2 to remove the insulating ladder, passes it down the tower, removes the pulley, and returns to the ground, the operation is completed .

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