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Anti-icing lightning arrester for preventing multiple lightning strokes of 10kv distribution line

A technology of distribution lines and lightning arresters, which is applied in the field of overvoltage protection products, can solve problems such as not meeting the operating conditions of distribution network lines, insufficient multiple lightning strike capability of lightning arresters, and thermal collapse of lightning arresters, so as to prevent long-term exposure to power frequency voltage and protect Peripheral equipment and personnel safety, effect of reducing disconnection phenomenon

Active Publication Date: 2021-01-12
NANYANG JINNIU ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, arresters use square waves to measure the flow capacity of arresters, which does not meet the actual operating conditions of distribution network lines.
In thunderstorm weather, the lightning arrester has insufficient ability to withstand multiple lightning strikes, and the damage is more, and after the lightning strike, the voltage changes by about 7 to 10%, and cannot withstand the next lightning strike; some even voltage is lower than the line operating voltage, and the arrester will soon Will thermally collapse and explode

Method used

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  • Anti-icing lightning arrester for preventing multiple lightning strokes of 10kv distribution line

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Experimental program
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Effect test

Embodiment 1

[0032] An anti-icing lightning arrester for 10kv distribution lines against multiple lightning strikes, such as figure 1 As shown, including the core body and the silicone rubber jacket 7;

[0033] The core body includes a drawing rod 12, an upper fitting 10, a lower fitting 2, a lower winding electrode 4, a zinc oxide resistance sheet 5, an upper winding electrode 9 and a grid winding skeleton 6; The lower winding electrode 4, the zinc oxide resistance sheet 5 and the upper winding electrode 9 of the ring, the center lines of the lower winding electrode 4, the zinc oxide resistance sheet 5, the upper winding electrode 9 and the drawing rod 12 are located on the same straight line; the epoxy resin The grid winding skeleton 6 of glass fiber filament composite material is wound around the outer surface of the lower winding electrode 4, the zinc oxide resistance sheet 5 and the upper winding electrode 9 along the circumferential direction of the drawing rod 12;

[0034] The top ...

Embodiment 2

[0050] An anti-icing lightning arrester for 10kv distribution lines against multiple lightning strikes, the silicone rubber jacket 7 also includes N small protective umbrellas, and N is a natural number ≧2; the difference from Embodiment 1 is that the large protective umbrella 8 and all the small protective umbrellas The included angle between the common tangent line of the umbrella and the 12 axes of the drawing rod is an acute angle.

[0051] The present invention adopts the shape design in which the lower end is an insulating section and the upper end is a lightning protection section, which makes the whole compact, easy to manufacture, and light in weight; if the insulating section is placed on the upper end, the internal resistance sheet will be at the maximum bearing point of the lightning arrester bending load. In the tuyere or bad weather environment, the swing strength of the line increases, the bending load borne by the arrester increases, and the cycle of bending-rec...

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Abstract

The invention relates to the field of overvoltage protection products, in particular to an anti-icing lightning arrester for preventing multiple lightning strokes of a 10kv distribution line. The anti-icing lightning arrester comprises a core body, wherein the core body of the anti-icing lightning arrester comprises a drawing rod, an upper hardware fitting, a lower hardware fitting, a lower winding electrode, a zinc oxide resistor disc and an upper winding electrode, a lower winding electrode, a zinc oxide resistor disc and an upper winding electrode are sequentially arranged on the drawing rod; the top end of the drawing rod is fixedly connected with the upper hardware fitting, and the bottom end of the drawing rod is fixedly connected with the lower hardware fitting; annular discharge rings are respectively arranged on the lower fitting and the silicone rubber jacket. By adopting the inverted pagoda-shaped silicon rubber jacket design, the antifouling property of the lightning arrester is improved; the semi-conical arc-shaped reinforcing ribs are additionally arranged on the back surface of the large protective umbrella, so that the bearing capacity of the lightning arrester is enhanced, and the anti-icing, rainproof and snow-proof capacities of the lightning arrester can be improved. According to the lightning arrester, the appearance design that the lower end is the insulating section and the upper end is the lightning protection section is adopted, the internal zinc oxide resistor disc can be better protected against damage, and the whole lightning arrester is small and exquisite and convenient to manufacture.

Description

technical field [0001] The invention relates to the field of overvoltage protection products, in particular to an anti-icing lightning arrester for 10kv power distribution lines against multiple lightning strikes. Background technique [0002] In recent years, with the transmission lines of the high-voltage distribution network, more and more transmission lines have been erected to plateau mountainous areas with complex terrain and complex micro-topography and micro-climate. In these areas with special geographical environment, there are thousands of faults and defects of distribution network lightning arresters every year, and most of them are caused by lightning strike faults. Lightning accidents on distribution lines account for 70-80% of lightning accidents in the entire power system. , of which more than 75% are caused by induction lightning, and about 25% are caused by direct lightning. [0003] Surge arresters are commonly used overvoltage protection products in powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/12H01C1/012H01C1/02H01C1/16H01C17/02H01T4/10H01T4/02
CPCH01C7/12H01C1/012H01C1/02H01C1/16H01C17/02H01T4/10H01T4/02
Inventor 靳国青黄海张玉李明双黄阳胡伟伟
Owner NANYANG JINNIU ELECTRIC
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