CN101262125A

CN101262125A - Method for removing ice of power transmission line

Info

Publication number: CN101262125A
Application number: CNA2008100496177A
Authority: CN
Inventors: 赵根田
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-24
Filing date: 2008-04-24
Publication date: 2008-09-10
Anticipated expiration: 2028-04-24
Also published as: CN101262125B

Abstract

A deicing method for transmission lines is disclosed, which matches frozen transmission lines with a deicing power and a deicing device. After the frozen lines are not in operation, the output end of the deicing power and the conducting wire of the frozen lines are connected and the conducting wire of the frozen lines and the power line of the deicing device are connected, thus the deicing device is connected with the deicing power by the frozen lines, which is convenient for operators to operate the deicing device to deice the conducting wires of the frozen lines, insulators and towers.

Description

The method of removing ice of power transmission line

Affiliated technical field

The present invention relates in the electric power system, be used to avoid or reduce transmission line causes power outage owing to natural calamity method.

Background technology

Transmission line runs into the sleet freezing weather, will freeze on the lead.When freezing to certain thickness, the accident of falling the bar will take place, to such an extent as to cause very big economic loss to the whole society.

The report that adopts big electric current that the circuit that freezes is carried out ice-melt was at home and abroad arranged, I submitted 200810049329.1 in proposed to adopt big electric current to carry out the scheme of ice-melt, but it is also just effective to the ice of tying on the lead to adopt big electric current to carry out ice-melt, and the ice that remove on insulator and the shaft tower must rely on other deicer.The deicer of any kind all needs the engine or the electric energy that can use for a long time.And when carrying out deicing on a circuit, a lot of staff will carry out the work simultaneously, and the job site spreads all over the whole piece circuit, and required fuel or electric energy can be more.Especially in the world of ice and snow, also there is not the method practicable, that a large amount of fuel or electric energy are provided for deicer at present.

Summary of the invention

Purpose of the present invention is exactly the method that a kind of removing ice of power transmission line will be provided, and it can be for deicer provides electric energy, so that the staff implements the deicing operation to the lead that freezes, insulator, shaft tower.

The object of the present invention is achieved like this: the transmission line that freezes is matched with deicing power supply, deicer, after the circuit that freezes is out of service, the output of deicing power supply is connected with lead on the icing circuit, lead on the icing circuit is connected with the power line of deicer, can make deicer pass through freeze circuit and deicing power connection like this, lead, insulator and shaft tower on the circuit that freezes be implemented the deicing operation so that the staff operates deicer.

The present invention need increase by a station power distribution transformer or adopt the dislocation generation car as the deicing power supply in part transformer station, purchase the deicer of some in addition again, overall cost is not high, but the more important thing is to have solved lead is especially carried out this difficult problem of deicing to insulator and shaft tower.

Description of drawings

The concrete grammar of invention is provided by following examples.

Fig. 1 is the wiring schematic diagram that distribution transformer is connected with icing lead on the 110kv circuit as the deicing power supply.

Fig. 2 is the wiring schematic diagram that distribution transformer is connected with icing lead on the 220kv circuit as the deicing power supply.

Fig. 3 is a work schematic diagram corresponding with Fig. 1, that adopt hair drier insulator to be carried out deicing.

Fig. 4 is a work schematic diagram corresponding with Fig. 2, that adopt hair drier insulator to be carried out deicing.

Fig. 5 is a work schematic diagram corresponding with Fig. 2, that adopt circuit dolly and hair drier bundle conductor to be carried out deicing.

1. generator outlets among the figure, the 2.110kv step-up transformer 3. goes out wiretap, 4. lead, 5. service entrance switch, 6.110kv step-down transformer, 7. lead-in wire, 8. isolating switch, 9. distribution transformer output, 10. earth connection, 11. distribution transformers, 12. outlets, 13. generator outlet, the 14.220kv step-up transformer, 15. go out wiretap, 16. bundle conductors, 17. bundle conductor, 18. service entrance switchs, 19.220kv step-down transformer, 20. lead-in wires, 21. lead-in wire, 22. isolating switches, 23. distribution transformer outputs, 24. distribution transformer outputs, 25. earth connection, 26. distribution transformers, 27. outlets, 28. insulator, 29. cross-arms, 30. hair driers, 31. hook, 32. electric poles, 33. fans, 34. electrothermal tube, 35. can be arbitrarily crooked tube connector, 36. ajutages, 37. the hair-dryer power line, 38. hair-dryer power lines, 39. insulators, 40. cross-arm, 41. electric poles, 42. pulleys, 43. brush, 44. brushes, 45. arms, 46. screw, 47. engines, 48. dollies.

Embodiment

In Fig. 1: step-up transformer (2) is three winding constructions, the generator outlet (1) that comes from the power plant (is generally 10kv, represent three-phase conducting wire with single line among the figure, below all with) connect a winding of this transformer, a secondary winding output voltage of this transformer is 110kv, send electricity (annotate: the every phase of 110kv circuit all adopts solid conductor) by going out wiretap (3) and lead (4) to the distant place, arrive step-down transformer (6) at line end by service entrance switch (5), for local user power utilization, another secondary winding output voltage of this transformer is 35kv, power to distribution transformer (11) by outlet (12), this distribution transformer output voltage is 380v, its output (9) is connected with lead (4) by isolating switch (8) and lead-in wire (7), and neutral point is by earth connection (10) ground connection.

When carrying out deicing, at first switch (5) and switch (3) are disconnected, make the circuit that freezes out of service.With isolating switch (8) closure, 380v voltage is added on the lead (4) then.Promptly to become with the earth be the three-phase low-voltage circuit of zero line to the whole piece circuit like this.The staff can be connected on a power line of deicer on the lead, and another root power line is connected on the cross-arm and gets final product.Concrete wiring can be referring to Fig. 3.

The characteristics of this embodiment are to be applicable to very much insulator and shaft tower are carried out the deicing operation.

In Fig. 2: step-up transformer (14) is three winding constructions, the generator outlet (13) that comes from the power plant connects a winding of this transformer, a secondary winding output voltage of this transformer is 220kv, by going out the bundle conductor (16) of wiretap (15) and mutually insulated, (17) (annotate: the every phase of 220kv circuit all adopts two bundle conductors to send electricity to the distant place, and mutually insulated), arrive step-down transformer (19) at line end by service entrance switch (18), for local user power utilization, another secondary winding output voltage of this transformer is 35kv, power to distribution transformer (26) by outlet (27), this distribution transformer output voltage is 380v, (annotate: wherein one is live wire for its output (23) and (24), one is zero line) respectively by isolating switch (22), lead-in wire (21), (20) being connected with (16) with bundle conductor (17), (annotate: a bundle conductor has mutually only drawn among the figure, the rest may be inferred, and the two-phase bundle conductor is connected with other output of above-mentioned distribution transformer in addition).Neutral point is by earth connection (25) ground connection.

When carrying out deicing, at first switch (18) and switch (15) are disconnected, then the two ends of lead (16) are pulled down as shown in phantom in FIG. from switch (15) and switch (18) respectively that [annotate: the two ends of bundle conductor connect together at switch, if do not pull down the output short-circuit that can make distribution transformer (26), also the two ends of lead (17) can be pulled down from above-mentioned switch], again with isolating switch (22) closure.Like this, every phase bundle conductor promptly becomes a mutually existing live wire and has again the low-voltage circuit of zero line (annotate: every phase conductor only becomes a live wire among Fig. 1), two power lines of deicer is connected on respectively on above-mentioned two bundle conductors get final product.Concrete wiring can be referring to Fig. 4, Fig. 5.

The characteristics of this embodiment are to be applicable to very much bundle conductor is carried out the deicing operation.

For the circuit of 550kv and above electric pressure, every phase circuit all is to adopt quadripartion to reach with upper conductor.When being connected with the output of distribution transformer, any two leads in every phase bundle conductor are connected with a zero line with a live wire of distribution transformer output respectively to get final product.The given 220kv circuit of the mode of connection and Fig. 2 is identical.

Be it can also be seen that by Fig. 2: bundle conductor (16) also can be used as a lead with (17) and is connected with the output of distribution transformer (26), and the mode of connection and Fig. 1 are identical.

It more than is the connected mode of output and all electric pressure circuits of distribution transformer.

In Fig. 3: cross-arm (29) is housed on the electric pole (32), insulator (28) is housed on cross-arm (29), lead (4) is housed in the lower end of insulator (28).For simplicity's sake, the two-phase bundle conductor does not draw in the drawings in addition.

When carrying out deicing, the staff is suspended on hair drier (30) on the cross-arm (29) by hook (31).This hair-dryer mainly is made up of fan (33), electrothermal tube (34) and ajutage (36), and wherein adopting between ajutage (36) and the electrothermal tube (34) can crooked arbitrarily tube connector (35), can make the ajutage (36) can free activity like this.Power line (37) and (38) of hair-dryer are connected on respectively on lead (4) and the cross-arm (29).Like this, power line (37) is connected by the output (9) of lead (4) and distribution transformer (11), and power line (38) enters earth connection (10) connection (can referring to Fig. 1) of the earth and distribution transformer (11) by cross-arm (29).The cold wind that is blown out by fan (33) at first enters electrothermal tube (34), is heated the back and enters ajutage (36) and outwards blow out from the mouth of pipe by tube connector (35) in electrothermal tube (34).The staff hands ajutage (36) and makes hot blast blow to insulator to get final product.For easy to operate, the length of ajutage (36) can arbitrarily change.For the hot blast that ajutage (36) is blown out has enough temperature, the power of electrothermal tube (34) should be more than 3 kilowatts.

In Fig. 4: cross-arm (40) is housed on the electric pole (41), insulator (39) is housed on cross-arm (40), bundle conductor (16), (17) are housed in the lower end of insulator (39).For simplicity's sake, the two-phase bundle conductor does not draw in the drawings in addition.

When carrying out deicing, two power lines (37) and (38) of hair drier (30) are connected on respectively on bundle conductor (17) and (16).So, power line (37) is connected by bundle conductor (17), lead-in wire (21) and isolating switch (22) and the output (23) of distribution transformer (26); Power line (38) is connected (can referring to Fig. 2) by bundle conductor (16), lead-in wire (20) and isolating switch (22) with the output (24) of distribution transformer (26).The staff hands ajutage (36) can implement the deicing operation to insulator.

Under the situation that does not possess above-mentioned distribution transformer, can adopt the dislocation generation car to implement the deicing operation as the deicing power supply.

More than be to adopt distribution transformer, hair drier insulator to be implemented the wiring and the course of work of deicing.Meanwhile, other staff also can be sitting on the dolly that proposes in 200620030603.7, adopt above-mentioned hair drier that bundle conductor is implemented the deicing operation, as shown in Figure 5.

In Fig. 5: bundle conductor (16), (17) are for arranging that up and down dolly (48) is suspended on the above-mentioned lead by two identical arms (45) and pulley (42), and staff's (not drawing among the figure) is sitting in the dolly and operates.Engine (47) is installed in dolly (48), and engine (47) drives screw (46) rotation, travels before the thrust that relies on screw to produce makes dolly road direction along the line.Hair drier (30) is installed in the dolly (48), and two power lines (37) of hair-dryer and (38) link together with bundle conductor (17) and (16) by brush (43) and (44) respectively.All the other wiring and Fig. 2 are identical.

When carrying out deicing, the staff hands ajutage (36) allows hot blast blow to lead, allows dolly slowly get final product to overtake simultaneously.

The staff risen to from ground on the lead with dolly and can be not described in detail in this referring to above-mentioned patent specification from the operating process that lead drops to ground.

More than after all deicing ends of job, the staff at first pulls down power line (37), (38) of hair drier (30) from bundle conductor, and dolly is dropped on the ground, then isolating switch (22) is disconnected, two ends with lead (16) are connected on switch (15) and the switch (18) again again, circuit are normally sent switch (15) and switch (18) closure successively at last.

Except that above-mentioned hair drier, also can adopt the deicer of other type.The concrete structure of above-mentioned hair drier can be illustrated in " hair drier that is used for deicing " that this method is submitted simultaneously.

Do not having also can to adopt the DC power supply that matches with deicer under the situation of AC power, its wiring and working method and employing distribution transformer are basic identical.

Claims

The method of removing ice of power transmission line, it is characterized in that the transmission line that will freeze matches with deicing power supply, deicer, after the circuit that freezes is out of service, the output of deicing power supply is connected with lead on the icing circuit, lead on the icing circuit is connected with the power line of deicer, can make deicer pass through freeze circuit and deicing power connection like this, lead, insulator and shaft tower on the circuit that freezes be implemented the deicing operation so that the staff operates deicer.