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An overhead ground wire pilot lightning guide and combined electromagnetic energy dissipation device

An energy dissipation device and overhead ground wire technology, applied in circuit devices, overhead installations, emergency protection circuit devices, etc., can solve the problems of large energy during lightning strikes, threatening transformer safety, and heavy line maintenance workload, etc. The effect of improving efficiency and preventing primary side overvoltage

Active Publication Date: 2021-01-26
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problem that the maintenance workload of the overhead ground wire for lightning protection and ice melting in the prior art is large, and the energy is too large when the lightning strikes, and the overvoltage threatens the safety of the transformer; The energy device is convenient for the lightning protection and ice melting of the overhead ground wire, and can reduce the energy of lightning strike through electromagnetic energy dissipation, so as to protect the safety of the transformer

Method used

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  • An overhead ground wire pilot lightning guide and combined electromagnetic energy dissipation device
  • An overhead ground wire pilot lightning guide and combined electromagnetic energy dissipation device
  • An overhead ground wire pilot lightning guide and combined electromagnetic energy dissipation device

Examples

Experimental program
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Effect test

Embodiment 1

[0031] An overhead ground wire pilot lightning guide and combined electromagnetic energy dissipation device, such as figure 1 As shown, it includes an iron tower 1 , a cable 3 , a ground wire 2 erected on the iron tower 1 and an insulator 4 arranged between the cable 3 and the iron tower 1 . One end of the cable 3 is connected to the outer layer of the ground wire 2 , and the other end of the cable 3 is connected to the lightning induction device 5 .

[0032] The inner layer of the ground wire 2 is connected to the iron tower 1, including the communication line; the outer layer of the ground wire 2 is conductive and connected to the cable 3; an insulating layer is set between the inner layer and the outer layer of the ground wire 2, and the inner and outer layers of the partition are prevented from interfere with each other. The outer layer of the ground wire 2 passes through alternating current in winter, generates heat, and plays the role of melting ice.

[0033] The overh...

Embodiment 2

[0046] An overhead ground wire pilot lightning guide and combined electromagnetic energy dissipating device improves the energy dissipating module 7 .

[0047] Such as image 3 As shown, the energy dissipation module 7 includes an armature reactor and a torsion spring 74, and the armature reactor includes a movable iron core 72 and a fixed iron core 71 with windings. The iron core material is silicon copper sheet, and the coil withstand voltage level is 100kV.

[0048] One end of the fixed iron core 71 and one end of the movable iron core 72 are respectively provided with mounting holes, and the torsion spring 74 is arranged in the mounting holes to connect the fixed iron core 71 and the movable iron core 72; one end of the torsion spring 74 is fixed to the movable iron core 72 The other end of the torsion spring 74 is fixedly connected with the fixed iron core 71. The other end of the movable iron core 72 leans against a fixed object, such as the ground. In this embodiment...

Embodiment 3

[0053] An overhead ground wire pilot lightning guide and combined electromagnetic energy dissipating device improves the energy dissipating module 7 .

[0054] Such as Figure 4 As shown, the energy dissipation module 7 includes an armature reactor, a fixed pulley 75 and a weight 76, and the armature reactor includes a movable iron core 72 and a fixed iron core 71 with windings. The iron core material is silicon copper sheet, and the coil withstand voltage level is 100kV.

[0055] One end of the fixed iron core 71 and one end of the movable iron core 72 are connected by a rotating shaft 77, and the other end of the movable iron core 72 is provided with a small hole, and a stay rope is arranged in contact with the top of the fixed pulley 75, and one end of the stay rope is tied to the movable iron core. On the aperture of 72, the other end of stay cord is fixedly connected with weight 76.

[0056] When lightning strikes, the voltage induced by the secondary side of the pilot ...

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Abstract

The invention discloses an overhead ground wire pre-guiding lightning and combined electromagnetic energy dissipation device. The problems that in the prior art, the overhead ground wire lightning protection ice melting line maintenance workload is large, energy is too large during lightning stroke, and overvoltage is generated to threaten the safety of a transformer are solved. The device comprises an iron tower, a cable, an overhead ground wire and an insulator, wherein one end of the cable is connected with the outer layer of the ground wire; the other end of the cable is connected with a lightning guiding and energy dissipating device, the lightning guiding and energy dissipating device comprises a pilot transformer, a primary winding is connected with the cable, lightning is guided firstly, and a secondary side transmits energy to an energy dissipating module; the energy dissipation module dissipates energy of thunder and lightning in an electromagnetic conversion mode; and a lightning arrester is connected with the pilot transformer in parallel. Not only can the lightning be guided during lightning stroke in summer, but also the ice melting requirement of the ground wire in an insulating state can be met in winter, and the line maintenance workload is small; the energy dissipation module consumes thunder and lightning energy through electromagnetic conversion, which prevents overvoltage of the primary side of the pilot transformer, and protects the safety of the pilot transformer.

Description

technical field [0001] The invention relates to the field of electric power safety, in particular to an overhead ground wire pilot lightning guide and combined electromagnetic energy dissipation device. Background technique [0002] The overhead ground wire is an important part of the high-voltage transmission line, which has the functions of lightning protection, communication and maintenance lines and three-phase balance. Since the transmission line spans a vast area, it is easy to be struck by lightning in the thunderstorm season and cause power interruption, which has become one of the main reasons for power outages in the power system. Installing overhead ground wires can reduce lightning accidents and improve the safety of line operation. However, if the lightning energy is too large, an overvoltage will be generated during a lightning strike, which will cause damage to the transformer device. In addition, overhead lines will be subject to icing disasters in winter, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/16H02H9/06
CPCH02G7/16H02H9/06
Inventor 姜文东徐嘉龙崔建业方玉群赵俊杰王斌秦威南陈安
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO
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