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Extra-high-voltage DC disc-type suspension insulator capable of suppressing metal electrode corrosion

An ultra-high voltage DC, suspension insulator technology, applied in suspension/strain insulators, insulators, circuits, etc., can solve problems such as threats to the safe and stable operation of power systems, dropped lines, and the impact of insulator mechanical strength. Construction, increase the effect of natural cleaning ability

Pending Publication Date: 2018-08-10
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In any case, the electrode corrosion will have a great impact on the mechanical strength of the insulator, and serious accidents such as disconnection will seriously threaten the safe and stable operation of the power system.

Method used

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  • Extra-high-voltage DC disc-type suspension insulator capable of suppressing metal electrode corrosion
  • Extra-high-voltage DC disc-type suspension insulator capable of suppressing metal electrode corrosion
  • Extra-high-voltage DC disc-type suspension insulator capable of suppressing metal electrode corrosion

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Embodiment Construction

[0031] The present invention aims to provide an UHV DC disk-type suspension insulator capable of suppressing corrosion of metal electrodes. A separate iron cap attachment system is provided at the iron cap electrode of the insulator, and a steel foot attachment system is provided at the steel foot electrode.

[0032] The present invention will be described in detail below with reference to the accompanying drawings.

[0033] refer to figure 1 , The separate iron cap accessory system 1 is set at the iron cap 3 of the UHV DC disc suspension insulator, and the insulator does not need to be disassembled when the accessory system 1 is installed on site, which is convenient for assembly and construction.

[0034] Iron cap attachment system 1. The lower eaves of the iron cap are in close contact, which effectively weakens the generation of electrochemical corrosion.

[0035] The iron cap attachment system 1 is in close contact with the lower eaves of the iron cap, effectively weake...

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Abstract

The invention relates to an extra-high-voltage DC disc-type suspension insulator capable of suppressing metal electrode corrosion. An iron cap electrode of the insulator is provided with a separate iron cap accessory system; a steel pin electrode is provided with a steel pin accessory system; and the iron cap accessory system and the steel pin accessory system are closely contacted with the lowereave of an iron cap and the part, exposed to the air, of a steel pin respectively. The separate iron cap accessory system is formed by connecting left and right two parts through a concavo-convex combination mode; and an inclined-plane-shape upper surface is transited from a sine curve to an arc-shaped curve, and then, the arc-shaped curve is transited to a taper groove and an arc-shaped groove ofthe lower surface. A smooth surface of the upper surface of the steel pin accessory system is transited to an elbow; and the elbow is transited to a lower arc, a circular protruding head, an equipotential surface shape and an upper arc. The extra-high-voltage DC disc-type suspension insulator can reduce the possibility of generating leakage current, effectively improves external insulation strength of the insulator, can effectively weaken oxidation effect of ozone and effectively limits metal electrode corrosion, is convenient to assemble and convenient to construct.

Description

technical field [0001] The invention relates to an insulator used in a power system, in particular to an UHV DC disk-type suspension insulator capable of inhibiting corrosion of metal electrodes. Background technique [0002] my country has a vast territory, and the establishment of UHV transmission lines to safely and reliably transmit electric energy from power plants to load centers plays an important role in the sustainable development of my country's power resources and rapid economic development. UHV DC transmission has the advantages of long-distance, large-capacity transmission of electric energy, flexible adjustment, and low power loss. It is of decisive significance in promoting technological upgrading and sustainable development of the power industry, improving the utilization rate of transmission corridors, and solving the short-circuit current level of the power grid. [0003] my country's UHV DC transmission project began in 2010 from the line from Chuxiong, Yu...

Claims

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Application Information

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IPC IPC(8): H01B17/10H01B17/46H01B17/52
CPCH01B17/10H01B17/46H01B17/525H01B17/04
Inventor 程绳尹洪魏国强金哲张德赛吴启进石毅吴向东胡伟刘晓华刘琴
Owner STATE GRID CORP OF CHINA
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