Design of impulse grounding resistance measurement system for distribution network based on wavelet packet optimal algorithm

被引：0
|
作者：
Wang Q. [1 ]
Yu N. [1 ]
Jin C. [1 ]
机构：
[1] Department of Electrical Engineering, Hebei Vocational University of Technology and Engineering, Xingtai
来源：
International Journal of Powertrains | 2023年 / 12卷 / 04期
关键词：
distribution network; impulse current; impulse grounding resistance; measurement system; optimal algorithm; resistance signal; wavelet packet;
D O I：
10.1504/IJPT.2023.136140
中图分类号：
学科分类号：
摘要：
Accurate measurement of distribution network grounding resistance is helpful to improve the lightning protection performance of distribution network transmission lines. However, traditional measurement methods can not completely eliminate the invalid interference information in the signal. Therefore, a measurement system for impulse grounding resistance of distribution network based on wavelet packet optimisation algorithm is designed. Compared with traditional systems, this measurement system can more effectively and orderly extracts and process information with wavelet packet optimisation algorithm. The impact current generator is used to generate the impact current. The acquisition board and the main control unit are isolated by V/F transformation module and infrared communication module. In terms of software, the initial resistance signal measurement value is calculated based on the system measurement principle, and the initial resistance signal is processed by the wavelet packet optimal algorithm to remove the interference signal and retain the effective signal reflecting the ground resistivity information. It is verified that the designed system has high measurement precision. It is a highly reliable system for measuring the impulse grounding resistance of distribution networks. Copyright © 2023 Inderscience Enterprises Ltd.
引用
收藏
页码：357 / 371
页数：14
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