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A Design Method of Inductive Current-Limiting Lightning Arrester Based on Amplitude-Frequency Characteristic Analysis

A lightning rod and inductance technology, which is used in computing, electrical digital data processing, special data processing applications, etc., can solve the problems of inability to prove the lightning protection principle and lightning protection effect of inductive current lightning rods, and the lack of optimized design methods, so as to improve the Safety and reliability, increase lightning protection measures, reduce the effect of lightning current steepness and amplitude

Active Publication Date: 2018-04-13
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Therefore, the basic lightning protection principle and lightning protection effect of the inductive current lightning rod cannot be proved, and there is no optimal design method proposed.

Method used

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  • A Design Method of Inductive Current-Limiting Lightning Arrester Based on Amplitude-Frequency Characteristic Analysis
  • A Design Method of Inductive Current-Limiting Lightning Arrester Based on Amplitude-Frequency Characteristic Analysis
  • A Design Method of Inductive Current-Limiting Lightning Arrester Based on Amplitude-Frequency Characteristic Analysis

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Embodiment 1

[0027] Such as figure 1 As shown, an inductive current-limiting lightning rod design method based on analysis of amplitude-frequency characteristics includes the following steps:

[0028] S1 statistically analyzes the spectral characteristics of typical lightning current waveforms, and determines the spectrum distribution range. The typical lightning current waveforms include 2.6 / 50 double exponential wave / oblique wave, CIGRE waveform or Heidler waveform, such as Figure 2(a)-Figure 2(b) As shown; the typical lightning current waveforms in different areas are different, and reasonable lightning current waveforms can be selected according to the actual situation of the design area. This design method is used.

[0029] S2 Assuming that the LC chain equivalent circuit of a typical inductive current-limiting lightning rod is known, use circuit analysis software to build the LC chain equivalent circuit of a typical inductive current-limiting lightning rod, as shown in Figure 3(a); and an...

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Abstract

The invention discloses a design method of an inductive current-limiting lightning rod based on the analysis of amplitude-frequency characteristics, and analyzes the frequency spectrum characteristics of typical lightning current waveforms; assuming that the chain equivalent circuit of the inductive current-limiting lightning rod at high frequencies is known, the analysis The amplitude-frequency response characteristics of the equivalent circuit; assuming that the typical lightning current waveform passes through the chain equivalent circuit of the inductive current-limiting lightning rod, analyze the changes in the output lightning current spectrum characteristics, lightning current amplitude, and lightning current wave front steepness, etc. The relationship between the amplitude-frequency response characteristics of the chain-type equivalent circuit and its influencing factors; analysis of the chain-type equivalent circuit parameters that affect the input and output lightning current amplitude and wave front steepness changes, combined with the amplitude-frequency response characteristics to give a comparative Excellent parameter design range; based on the designed chain equivalent circuit parameters, combined with finite element analysis, an inductive current-limiting lightning rod design scheme with reasonable structure, size and material is designed.

Description

Technical field [0001] The invention relates to the field of lightning protection for transmission lines, in particular to a design method of an inductive current-limiting lightning rod based on analysis of amplitude-frequency characteristics. Background technique [0002] Lightning tripping is one of the main reasons for the tripping of transmission lines in my country. With the deepening of research on the lightning mechanism and protection methods of transmission lines, the lightning protection technology of transmission lines has obtained rich research results, which reduces the lightning accidents of transmission lines to a certain extent. However, with the improvement of technologies such as power equipment and protection devices, line tripping caused by lightning strikes is still the main cause of transmission line failures in my country. Improving the performance of transmission lines is of great significance to the safe and stable operation of the system. [0003] In rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 韩永霞戴栋李立浧阮耀萱张杰
Owner SOUTH CHINA UNIV OF TECH
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