CN103500966B - 66kv disconnecting switch is to pipe bus charged disconnecting lead-in wire method - Google Patents

Abstract

A method for disconnecting leads from a 66kv isolating switch to a pipe bus with live power, the steps are as follows: assemble an insulation ladder; place the insulation ladder below the operating point; equipotential electricians wear protective clothing and fasten safety ropes; hang the arc suppression tackle on the pipe bus , tie one end of the traction rope to the drainage line, and transfer the other end to the hands of the ground staff, who will tighten it; the equipotential electrician removes the drainage line, and the ground staff puts down the drainage line; put the new drainage line Use the arc suppression block and traction rope to lift to the pipe bus connection; the equipotential electrician connects the new drainage line to the pipe bus; the ground staff removes the arc suppression block, and the equipotential electrician removes the safety rope and returns to the ground; disconnect the other two Drainage line of the phase tube busbar; after the work is completed, remove the insulation ladder and organize the tools. The advantages are: avoiding large-scale power outages, less prone to misoperation, high reliability of power supply, small economic loss, and ensuring the safety of equipotential electrician operations.

Description

66kv isolating switch to pipe bus live disconnection lead wire method

technical field

The invention relates to a safety rope method for disconnecting lead wires from a 66kv isolating switch to a pipe bus with live electricity.

Background technique

The general way to disconnect the 66kv isolating switch to the tube bus lead wire is as follows:

1. Hang the ladder hook on the pipe busbar, and the equipotential electrician climbs to the vicinity of the pipe busbar, and connects the safety rope tied to the body to the pipe busbar.

2. The equipotential electrician connects the new drainage wire with the pipe busbar, and removes the old drainage wire.

3. The equipotential electrician holds the drain wire tightly with one hand, releases the safety rope, and climbs up and down the hanging ladder.

At present, the soft pipe busbars in the power grid are gradually replaced by hard pipe busbars, and the hard pipe busbars have the characteristics of being unable to bear load and small spacing. Since the hard pipe busbars cannot bear load, it is impossible to use the hanging ladder hook to hang the pipe busbars , and it is impossible to use a safety rope to connect with the pipe busbar, so the operation safety of the equipotential electrician cannot be guaranteed; in addition, due to the small distance between the hard pipe busbars, it is difficult to ensure the safe operating distance of the equipotential electrician. Therefore, the above-mentioned method of disconnecting the lead wires from the 66kv isolating switch to the tube busbar cannot be applied to the new hard tube busbar. At present, when disconnecting the lead wires for such a hard pipe bus, it is often necessary to cut off all the equipment connected to the pipe bus, which greatly increases the reliability of power supply, causes great economic losses, and there are many power outage equipment, which is prone to misoperation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for disconnecting leads from a 66kv isolating switch to a pipe bus that avoids large-scale power outages, is less prone to misoperation, has high power supply reliability, and reduces economic losses, and can ensure safe operation by equipotential electricians.

The present invention is achieved like this:

A 66kv isolating switch to a pipe bus live disconnection lead wire method, which is special in that the specific steps are as follows:

1. Assembling an insulating ladder, the insulating ladder includes an insulating ladder body, a platform is provided on the top of the insulating ladder body, a limit frame is provided around the platform, and a back guard is provided on one side of the limit frame;

2. Lay the tarpaulin on the ground, pull the control ropes at the four corners of the top of the insulation ladder, and place the insulation ladder on the tarpaulin away from the operating point of the one-phase busbar of the isolating switch;

3. The equipotential electrician wears protective clothing and fastens a safety rope. The safety rope has a conductive cloth belt, and a safety belt and a conductive rope are connected to the conductive cloth belt to ensure that one hand is higher than the head and climbing insulation When reaching the platform, connect the safety belt of the safety rope to the insulating ladder limit frame or back support frame, connect the conductive rope to the pipe busbar, and touch the equipotential point of the pipe busbar with one hand when connecting the conductive rope to the pipe busbar ;

4. The ground staff hangs the arc-suppression block on the pipe bus with an insulating rod. The equipotential electrician binds one end of the traction rope to the drainage line to be replaced, and the other end is sent to the ground staff through the arc-suppression block. The ground staff will its taut;

5. The equipotential electrician removes the drain wire, and the ground staff puts down the drain wire;

6. The ground staff apply conductive paste on the connection end of the new drainage wire, and check that the isolating switch is in the open position and there is no grounding, and lift the new drainage wire to the connection of the pipe bus through the arc suppression block and the traction rope;

7. The equipotential electrician connects the new drainage line with the pipe busbar;

8. The ground staff removes the arc suppression block, and the equipotential electrician removes the safety rope and returns to the ground;

9. Repeat steps 1 to 8, and disconnect the drain wires of the other two-phase pipe busbars in the order of distance from the isolation switch;

10. After the work is completed, remove the insulation ladder and organize the tools.

The beneficial effects of the present invention are:

1. Due to the use of a special insulating ladder, the equipotential electrician can stand on the platform to operate without hanging the ladder on the pipe busbar, which is suitable for hard pipe busbars.

2. The insulating ladder is equipped with a limit frame and a back frame, which limits the moving range of the equipotential electrician and avoids electric shock accidents caused by being too close to other phase lines.

3. The disconnection work is carried out in the order from far to near to the isolating switch, which greatly reduces the possibility of electric shock accidents.

4. Cooperate with the ground staff and the equipotential electrician, which is safer and faster, and the work efficiency is greatly increased.

5. Using a special safety rope, when it is applied to a hard pipe bus that cannot bear load, it can not only ensure that the equipotential electrician and the pipe bus have the same potential, but also ensure that the equipotential electrician can be pulled in time in case of a sudden fall accident. Avoid injury.

Description of drawings

Fig. 1 is a schematic view of the working state of the present invention.

In the figure: control rope 1, insulating ladder 2, insulating ladder body 201, platform 202, limit frame 203, back guard frame 204, safety rope 3, conductive cloth belt 301, safety belt 302, conductive rope 303, pipe busbar 4, Arc suppression block 5, traction rope 6, drainage line 7.

detailed description

As shown in the figure, the specific steps are as follows:

1. Assembling the insulating ladder 2, the insulating ladder 2 includes an insulating ladder body 201, a platform 202 is provided on the top of the insulating ladder body 201, a limit frame 203 is provided around the platform 202, and a back guard is provided on one side of the limit frame 203 Rack 204.

2. Lay the tarpaulin on the ground, pull the control ropes 1 at the top four corners of the insulating ladder 2, and place the insulating ladder 2 on the tarpaulin away from the working point of the one-phase busbar 4 of the disconnector.

3. The equipotential electrician wears protective clothing and fastens the safety rope 3. The safety rope 3 has a conductive cloth belt 301, and a safety belt 302 and a conductive rope 303 are connected to the conductive cloth belt 301 to ensure that the height of one hand is high. At the head, climb the insulating ladder 2, and when reaching the platform 202, connect the safety belt 302 of the safety rope 3 with the limit frame 203 or the back support frame 204 of the insulating ladder 2, connect the conductive rope 303 with the tube mother 4 wires, and connect When conducting rope 303 and pipe bus 4, one hand will touch the equipotential point of pipe bus 4.

4. The ground staff hangs the arc-suppression block 5 on the pipe bus 4 with an insulating rod, and the equipotential electrician binds one end of the traction rope 6 to the drainage line 7 to be replaced, and the other end is sent to the ground staff through the arc-suppression block 5 hands, the ground crew pulls it taut.

5. The equipotential electrician removes the drain wire 7, and the ground staff puts down the drain wire 7.

6. The ground staff apply conductive paste on the connection end of the new drainage wire 7, and check that the isolating switch is in the open position without grounding, and lift the new drainage wire 7 to the connection of the pipe busbar 4 through the arc suppression block 5 and the traction rope 6 ;

7. The equipotential electrician connects the new drain wire 7 with the tube mother wire 4;

8. The ground staff removes the arc suppression block 5, and the equipotential electrician removes the safety rope 3 and returns to the ground.

9. Repeat steps 1 to 8, and disconnect the drain wire 7 of the other two-phase tube bus 4 in the order of distance from the isolating switch.

10. After the work is completed, remove the insulation ladder 2 and organize the tools.

Claims (1)

1. A 66kv isolating switch to a pipe bus live disconnection lead wire method, characterized in that the specific steps are as follows: (1) Assembling an insulating ladder, the insulating ladder includes an insulating ladder body, a platform is provided on the top of the insulating ladder body, a limit frame is provided around the platform, and a back guard is provided on one side of the limit frame; (2) Lay the tarpaulin on the ground, pull the control ropes at the four corners of the top of the insulation ladder, and place the insulation ladder on the tarpaulin away from the operating point of the one-phase busbar of the disconnector; (3) The equipotential electrician wears protective clothing and fastens a safety rope. The safety rope has a conductive cloth belt, and a safety belt and a conductive rope are connected to the conductive cloth belt to ensure that one hand is higher than the head. When climbing the insulating ladder, connect the safety belt of the safety rope to the limit frame of the insulating ladder or the back support when reaching the platform, and connect the conductive rope to the pipe busbar. When connecting the conductive rope to the pipe busbar, one hand should touch the pipe busbar, etc. Potential point; (4) The ground staff use insulating rods to hang the arc-suppression block on the pipe bus, and the equipotential electrician binds one end of the traction rope to the drainage line to be replaced, and the other end is sent to the ground staff through the arc-suppression block. Person pulls it tight; (5) The equipotential electrician removes the drain wire, and the ground staff puts down the drain wire; (6) The ground staff apply conductive paste on the connection end of the new drainage wire, and check that the isolating switch is in the open position without grounding, and lift the new drainage wire to the connection of the pipe bus through the arc suppression block and the traction rope; (7) The equipotential electrician connects the new drainage line with the pipe busbar; (8) The ground staff removes the arc suppression block, the equipotential electrician removes the safety rope, and returns to the ground; (9) Repeat steps (1) to (8), and disconnect the drain wires of the other two-phase bus bars in the order of distance from the isolation switch; (10) After the work is completed, remove the insulation ladder and organize the tools.