Lightning protection active interception device for high-voltage overhead insulated line

A high-voltage overhead and interception device technology, which is applied in the installation of corona discharge devices, circuits, cables, etc., can solve problems such as difficulty in ensuring stable power supply of the power grid, high calculation variables, and complex data samples, so as to avoid high-voltage emptying, The effect of prolonging the service life and increasing the contact area

Pending Publication Date: 2022-03-25
STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 112467740 B refers to the data model of multi-meteorological factors. Methods such as power failure in advance and sensitivity detection can be used to avoid lightning strikes. However, the system relies on complex data samples and high calculation variables. It is very difficult to collect extreme data in the region, and it does not have the conditions for comprehensive popularization. At the same time, it is difficult to ensure the stable power supply of the power grid

Method used

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  • Lightning protection active interception device for high-voltage overhead insulated line
  • Lightning protection active interception device for high-voltage overhead insulated line
  • Lightning protection active interception device for high-voltage overhead insulated line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to Figure 1-4 , an active interception device for lightning protection of high-voltage overhead insulated lines, including a lightning rod, a conductive lead 5 connected to the lightning rod, and a grounding device connected to the conductive lead 5, and the lightning rod is installed on an independent insulating support rod 4 , the lightning rod includes a lightning receptor 1, a fixed insulating sleeve 2 for installing the lightning receptor 1, the insulating support rod 4 is fixed on the spacer bar in the high-voltage overhead line, and the conductive lead 5 is arranged on the The lightning rod on the spacer bar is connected.

[0041] A fastening joint 7 is provided between the lightning receptor 1 and the fixed insulating sleeve 2, and the fastening joint 7 includes a ceramic shell and a metal inner shell arranged in the ceramic shell, and the fastening joint 7 A rubber sealing ring is provided, and a ferrite porcelain interlayer is provided inside the fixed...

Embodiment 2

[0054] One end of the conductive lead wire 5 connected to the lightning receptor 1 is provided with a copper nose, and the copper nose includes a fixed coil 8 and a pressed copper ring 9, and the distance between the fixed coil 8 and the pressed copper ring 9 is 90°. degrees at right angles.

[0055] The lower end of the lightning receptor 1 is provided with connecting bolts, and the nuts installed on the connecting bolts are tightened.

[0056] The inner side of the fastening joint 7 and the upper end of the fixed insulating sleeve 2 are provided with threads.

[0057] A diode structure unidirectional current module is arranged between the conductive lead 5 and the grounding device, and the diode structure unidirectional current module includes a larger PN junction and leads at both ends, and the diode structure unidirectional current module is a surface contact type diode.

[0058] The connection mode between the lightning receptor 1 and the conductive lead 5 is optimized,...

Embodiment 3

[0062] The conductive lead 5 is connected to the lightning counter.

[0063] It is convenient to count the number of lightning strikes on a specific line, and provide more accurate data for establishing relevant mathematical models of lightning strike lines.

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Abstract

The invention provides a lightning protection active interception device for a high-voltage overhead insulated line, and belongs to the technical field of lightning monitoring and protection. A lightning protection active interception device for a high-voltage overhead insulation line comprises a lightning rod, a conductive lead connected with the lightning rod and a grounding device connected with the conductive lead, the lightning rod is installed on an independent insulation supporting rod, and the lightning rod comprises a lightning arrester and a fixed insulation sleeve for installing the lightning arrester. The insulating support rod is fixed on a spacer in a high-voltage overhead line, and the conductive lead is connected with the lightning rod arranged on the spacer. The lightning arrester is arranged on a traditional high-voltage overhead insulation line and connected with the grounding device, the situation that the insulation line is damaged due to the fact that thunder and lightning directly hits the insulation line is avoided, the insulation conductive interlayer is additionally arranged to conduct grounding transfer on the possibly generated strong electromagnetic effect, and the safety of the line is protected to the maximum degree.

Description

technical field [0001] The invention belongs to the technical field of lightning strike monitoring and protection, and in particular relates to an active interception device for lightning strike protection of high-voltage overhead insulated lines. Background technique [0002] At present, my country's 10kV lines are dominated by overhead lines. Especially in more developed cities, l0kV overhead lines have changed from bare wires to insulated wires. Overhead insulated conductors have many advantages such as good insulation performance, reduced distance between lines, anti-corrosion, simplified structure, deep load center, conducive to urban greening, reduced line corridors, and extended maintenance cycles. This has significantly improved the safety of overhead lines, but at the same time how to prevent lightning breakage of overhead insulated conductors has become a new research direction. [0003] Lightning is a common and complex phenomenon in nature, which may bring many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G13/00H01T19/04H01R4/66
CPCH02G13/20H02G13/40H01T19/04H01R4/66
Inventor 李德栓施学昭郭威付四喜张兰云贵童史红伟汪卫疆徐嘉明袁航
Owner STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY
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