Lightning current monitoring system for low-voltage electric transmission line

A current monitoring and lightning current technology, applied in the field of low-voltage transmission line lightning current monitoring system, to achieve the effect of convenient installation, convenient operation and reliable monitoring data

Inactive Publication Date: 2015-02-25
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of these methods in low-voltage transmission lines has certain limitations.

Method used

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  • Lightning current monitoring system for low-voltage electric transmission line
  • Lightning current monitoring system for low-voltage electric transmission line

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0024] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention discloses a lightning current monitoring system for a low-voltage electric transmission line. The lightning current monitoring system comprises a lightning current signal conversion module, a lightning current signal processing circuit, a GPRS receiving and transmission unit and a lightning current parameter storage and display module. The lightning current signal conversion module comprises a magnetic core induction coil, a sampling resistor, a voltage divider and an amplitude limiting circuit, wherein the magnetic core induction coil, the sampling resistor, the voltage divider and the amplitude limiting circuit are sequentially connected. The lightning current signal processing circuit comprises an A / D conversion circuit, an FPGA sampling control module and a DSP central control module, wherein the A / D conversion circuit, the FPGA sampling control module and the DSP central control module are sequentially connected. The lightning current parameter storage and display module comprises a GPRS wireless receiving module and a terminal storage and display unit which are connected. The amplitude limiting circuit is connected with the A / D conversion circuit, the DSP central control module is connected with the GPRS receiving and transmission unit, and the GPRS receiving and transmission unit is in wireless communication with the GPRS wireless receiving module. The lightning current monitoring system is used for monitoring the lightning current, generated by a direct lightning or the electrostatic induction and the electromagnetic induction of the lightning, of the low-voltage electric transmission line.

Description

technical field [0001] The invention relates to a lightning current monitoring system of a low-voltage transmission line, which belongs to the field of lightning science and technology. Background technique [0002] Lightning strikes on low-voltage transmission lines are the main cause of endangering the safe and reliable operation of low-voltage transmission lines, and are also the main cause of damage to electrical and electronic equipment. Therefore, it is very important to accurately monitor the waveform and amplitude of lightning current on low-voltage transmission lines to analyze lightning accidents and study lightning protection. [0003] At present, the magnetic copper rod method is used for the measurement of lightning current in high-voltage transmission lines, which has large measurement errors and cannot be repeatedly recorded. There are also magnetic tape method, Rogowski coil method and lightning positioning system. However, the application of these methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25
Inventor 李祥超周中山朱若虚李鹏飞
Owner NANJING UNIV OF INFORMATION SCI & TECH
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