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Lightning-protection method and device for transmission line composite insulator

A composite insulator and lightning protection technology, applied in circuits, insulators, electrical components, etc., can solve the problems of long power outage, unsuitable on-site operation, low rigidity, etc., and achieve the effect of protection from burning.

Active Publication Date: 2010-06-30
CHINA ELECTRIC POWER RES INST +1
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AI Technical Summary

Problems solved by technology

[0005] Luo Zhenhai et al., "Research on Lightning Protection Protection of Composite Insulator Parallel Gap for 110kV and 220kV Overhead Transmission Lines" developed an I-type gap device suitable for lightning protection of 110kV and 220kV composite insulators. The discharge ball of the high-voltage side electrode is separated from the ring, and the structure It is slightly complicated, and the rigidity of the whole device is also small, so it is not suitable for field operation. If the parallel gap protection device is installed on the tension composite insulator, due to the large force of the tension string, untie the insulator string to install the parallel gap protection device. It is more difficult, and it may also cause the problem of prolonged power outage

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  • Lightning-protection method and device for transmission line composite insulator
  • Lightning-protection method and device for transmission line composite insulator
  • Lightning-protection method and device for transmission line composite insulator

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Embodiment Construction

[0030] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. In the drawings, the same reference numbers refer to the same or similar components or elements.

[0031] An embodiment of the present invention provides a voltage equalization and lightning protection device for a composite insulator of a power transmission line. The voltage equalization and lightning protection device includes a first subsection and a second subsection; wherein the first subsection is used to be installed in the composite insulator. One side of the insulator, including a first electrode with a protruding end, with voltage equalization capability; the second subsection for mounting on the other side of the composite insulator, including a second electrode with a spherical end, with voltage equalization capability; the first The electrode and the second electrode form a parallel gap....

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Abstract

The invention discloses a lightning-protection method and a voltage-sharing lightning-protection device for a transmission line composite insulator, the device comprises: a first subpart of the voltage-sharing lightning-protection device is installed at one side of the composite insulator, wherein the first subpart comprises a first electrode with a protruding end, and the first subpart has the voltage-sharing capacity; while a second subpart of the voltage-sharing lightning-protection device is installed at the other side of the composite insulator, wherein the second subpart comprises a second electrode with a spherical end, and the second subpart has the voltage-sharing capacity; wherein, the first electrode and the second electrode construct a parallel connection gap. The method and the device of the invention realize dual functions of voltage sharing and lightning-protection for the composite insulator, prevent the metal at the end of the composite insulator from being burned by electric arc and effectively prevent the composite material from burning and damaging.

Description

technical field [0001] The invention relates to lightning protection protection of power transmission lines, and more particularly, to a lightning protection protection method and a voltage equalization and lightning protection protection device of composite insulators of power transmission lines. Background technique [0002] Lightning strikes and pollution flashovers are the main failure forms of overhead transmission lines. The power frequency freewheeling arc caused by the flashover damages the insulator and its hardware, which brings great difficulties to the operation and maintenance of the line, and often causes huge economic losses and adverse social impacts. [0003] The existing lightning protection measures for overhead transmission lines include: erecting lightning protection lines, reducing the grounding resistance of towers, strengthening insulation, installing coupling grounding wires, and installing line lightning arresters. Its core idea is to improve the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/44H01B17/46
Inventor 陈维江王献丽葛栋张翠霞沈海滨颜湘莲罗瑞彬陈锡阳林建华尹创荣
Owner CHINA ELECTRIC POWER RES INST
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