Intelligent lightning protection device

A lightning protection device and intelligent technology, applied in the direction of circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problem that lightning arresters cannot effectively discharge current and cannot effectively protect , failure and other problems, to avoid major losses and casualties, discharge lightning transient overcurrent, suppress the effect of overvoltage amplitude

Pending Publication Date: 2018-12-21
JIANGSU WEIHENG INTELLIGENT TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system has certain limitations. The piezoresistor and gas discharge tube will age and fail with the increase of frequent discharge times and the influence of long-term temperature.
The failure of the lightning arrester is divided into complete failure and partial failure, but the current lightning arrester cannot automatically detect whether the damage is complete failure or partial failure. In the case of partial failure, the lightning arrester cannot effectively discharge current, so when In case of lightning strike or overvoltage, it cannot be effectively protected, causing heavy losses

Method used

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Embodiment Construction

[0020] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on the specific embodiments and in conjunction with the accompanying drawings.

[0021] This embodiment provides an intelligent lightning protection device, including a lightning protection circuit and an intelligent control module.

[0022] The lightning protection circuit includes varistor RV1, varistor RV2, varistor RV3 and gas discharge tube GT1. One end of varistor RV1 is connected to live wire L, and the other end is connected to neutral wire N; one end of varistor RV3 is connected to live wire L, the other end is connected to one end of the gas discharge tube GT1, and the other end of the gas discharge tube GT1 is grounded; one end of the varistor RV2 is connected to the neutral line N, and the other end is connected between the gas discharge tube GT1 and the varistor RV3.

[0023] The intelligent control module incl...

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PUM

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Abstract

The invention discloses an intelligent lightning protection device, which comprises a lightning protection circuit and an intelligent control module. The lightning protection circuit comprises a varistor and a gas discharge tube, the intelligent control module comprises an MCU control unit, an impedance detection unit and a failure information output unit, The input end of the impedance detectionunit is respectively connected with a varistor and a gas discharge tube, the output end of the impedance detection unit is connected with an MCU control unit, the input end of the failure informationoutput unit is connected with the MCU control unit, and the output end of the failure information output unit is connected with an end user. The invention can judge whether the impedance value of eachcomponent is in the normal impedance value, thereby judging whether the component is completely or partially invalidated, and effectively informing the end user to carry out maintenance and replacement, so as to avoid heavy loss and casualty caused by lightning strike or overvoltage.

Description

technical field [0001] The invention relates to the technical field of lightning protection, in particular to an intelligent lightning protection device. Background technique [0002] At present, the lightning protection system composed of varistors and gas discharge tubes has been widely used in power supply devices and new energy devices as the first or first two levels of protection, and plays the role of discharging lightning transient overcurrent and limiting overvoltage. It is mainly used to protect the insulation of semiconductor components such as switches, busbars, capacitors, and IGBTs in the main circuit to avoid overvoltage damage. The working principle is that when the input terminal voltage caused by lightning or other operations is higher than the nominal voltage value of the varistor, the varistor breaks down and conducts rapidly, and at the same time, the gap between the two poles of the gas discharge tube breaks down and conducts , quickly discharge the li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/06H02H9/02
CPCH02H9/02H02H9/06
Inventor 李永军钱敏华李培成黄国江
Owner JIANGSU WEIHENG INTELLIGENT TECH CO LTD
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