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Lightning stroke overvoltage protection device suitable for current collection line insulator in high wind speed environment

A lightning strike overvoltage and collector line technology, applied in circuits, insulators, wind power generation, etc., can solve problems such as heating and aging of resistors, power outage accidents, permanent short circuit of insulation performance system, etc.

Pending Publication Date: 2022-06-07
华能新能源股份有限公司云南分公司 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this kind of arrester has some disadvantages. The gapless arrester has been subjected to the system voltage for a long time, and the non-linear resistor will generate leakage current under the action of the voltage. The long-term circulation of the leakage current will cause the resistor to heat and age, and the insulation performance of the aging resistor will be seriously reduced. Form a permanent short circuit in the system, and then cause a serious power outage. Therefore, a lightning overvoltage protection device for collector line insulators suitable for high wind speed environments is proposed to solve the above problems

Method used

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  • Lightning stroke overvoltage protection device suitable for current collection line insulator in high wind speed environment
  • Lightning stroke overvoltage protection device suitable for current collection line insulator in high wind speed environment
  • Lightning stroke overvoltage protection device suitable for current collection line insulator in high wind speed environment

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Experimental program
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Effect test

Embodiment 1

[0028] like figure 1 , figure 2 and image 3 As shown in the figure, a lightning overvoltage protection device suitable for collecting line insulators in a high wind speed environment includes an insulator 1. Both conductive ends of the insulator 1 are provided with a voltage limiting mechanism 2, and the voltage limiting mechanism 2 on both sides forms a parallel connection with the insulator 1. structure, a wind-proof and anti-bending mechanism 3 is arranged between the voltage limiting mechanisms 2 on both sides;

[0029] Further, the two voltage-limiting mechanisms 2 are symmetrically arranged at both ends of the wind-proof and anti-bending mechanism 3, which are symmetrically designed in form and beautiful in appearance. Mechanism 3 is balanced under the action of external force, improving stability;

[0030] The voltage limiting mechanism 2 includes a silicone rubber shed 21 and a plurality of stacked annular resistor sheets 22. The annular resistor sheet 22 is made ...

Embodiment 2

[0035] like figure 1 and image 3 As shown, the windproof and anti-bending mechanism 3 includes a connecting plate 31 and a support rod 32, a connecting plate 31 is provided on one end of the voltage limiting mechanism 2 on both sides, and a support rod 32 is arranged between the connecting plates 31 on both sides;

[0036] The radius of the connecting plate 31 is between 25-35cm, and the height of the support rod 32 is between 35-45cm;

[0037] The number of the support rods 32 is four, and the four support rods 32 between the connecting plates 31 on both sides form a cube-shaped structure. It is a square-shaped support structure composed of epoxy resin material, which has high flexural strength and is suitable for high wind speed environments, and the windproof and anti-bending mechanism 3 composed of epoxy resin material is molded at one time, which is conducive to modular production. The investment cost is reduced, and the maintenance is free in the later period.

Embodiment 3

[0039] like figure 1 As shown, it also includes a conductive member 4, a first connecting member 5 and a second connecting member 6. The two ends of the insulator 1 and the opposite ends of the voltage limiting mechanism 2 on both sides are respectively provided with a first connecting member 5 and a second connecting member. 6, the first connecting piece 5 and the second connecting piece 6 on the same side are respectively connected with the adjacent conductive pieces 4;

[0040] Among them, the conductive member 4 is a cross arm angle steel, the first connecting member 5 is a cap socket, and the second connecting member 6 is a ball head. The ball head constitutes the connection between the insulator 1 , the voltage limiting mechanism 2 and the conductive member 4 , and the other end of the voltage limiting mechanism 2 is connected to the grounding with the external installation components through the cross arm angle steel.

[0041] Working principle: Under normal conditions...

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Abstract

The invention relates to high-voltage insulation, in particular to a current collection line insulator lightning stroke overvoltage protection device suitable for a high wind speed environment, which comprises an insulator, voltage limiting mechanisms are arranged at two conductive ends of the insulator, the voltage limiting mechanisms on two sides and the insulator form a parallel structure, and a windproof bending-resistant mechanism is arranged between the voltage limiting mechanisms on two sides. The two voltage limiting mechanisms are symmetrically arranged at the two ends of the windproof bending-resistant mechanism, the two ends of the insulator and the opposite ends of the voltage limiting mechanisms on the two sides are provided with the first connecting pieces and the second connecting pieces respectively, and the first connecting pieces and the second connecting pieces on the same side are connected with the adjacent conductive pieces respectively. The voltage limiting mechanism is prevented from being dislocated due to vibration through the windproof bending-resistant mechanism, the insulation gap of the voltage limiting mechanism is increased, flashover of the insulator can be protected during lightning stroke, and the device can be widely applied to 35kV current collection lines in a high-wind-speed environment.

Description

technical field [0001] The invention relates to the technical field of high-voltage insulation, in particular to a lightning overvoltage protection device for a collector line insulator suitable for a high-wind speed environment. Background technique [0002] Lightning protection is a variety of protection measures taken to prevent the impact of lightning. This is because lightning will have serious effects on communication lines in the air and communication cables buried in the ground. Corresponding measures must be taken. Lightning protection of electric lines is a very concerned issue in the power system. my country has started research on lightning protection of 35kV collector lines since the middle of the last century, and has achieved certain results. [0003] The existing lightning protection measures mainly include erecting lightning protection lines and coupling ground wires, using line lightning arresters and parallel protection gaps, strengthening line insulation a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/42H01B17/40
CPCH01B17/42H01B17/40Y02E10/72
Inventor 邓越张时陈志才倪嘉伟曹治叶林向念文孙伟陈欣陈玉东孟鹏飞吴伯双鲍捷叶寿洪雷佳华苑乾坤潘宇峰
Owner 华能新能源股份有限公司云南分公司
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