High precision detection method for a voltage traveling wave based on L1 regularization inversion

被引：0
|
作者：
Li X. [1 ]
Deng F. [1 ]
Zhang Z. [2 ]
Jiang S. [1 ]
Bi L. [1 ]
机构：
[1] College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha
[2] Guangzhou Power Supply Bureau, CSG Guangdong Electric Power Company, Guangzhou
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2023年 / 51卷 / 22期
基金：
中国国家自然科学基金;
关键词：
high precision detection; L1; regularization; multi-scale; traveling wave sensor; waveform inversion;
D O I：
10.19783/j.cnki.pspc.230189
中图分类号：
学科分类号：
摘要：
There is a problem that the fault traveling wave signal of the secondary side of a voltage traveling wave sensor cannot truly reflect the characteristics of the primary traveling wave of the power grid. Thus this paper proposes a high-precision detection method for a voltage traveling wave based on L1 regularization inversion. First, the nonideal transmission characteristics of the traveling wave sensor are analyzed. Then a method of multi-scale decomposition of the observed signal using wavelet packet transform and inversion of the signals in each frequency band is proposed to reduce the distortion error caused by the traveling wave sensor. Second, an L1 regularization constraint is introduced into the inversion model to describe its sparsity, so that the inversion results can better reflect the characteristics of real fault waveforms. Finally, FISTA is used to solve the problem iteratively, and the fault traveling wave signal can be obtained by linear superposition of the inversion waveforms of each component. The outcome of the simulations and experiments demonstrate that, compared with direct inversion, this method can achieve high-precision real measurement of a fault traveling wave in the time and frequency domains, and can obtain more accurate inversion results even in a weak fault and noise environment. This offers value for engineering application. © 2023 Power System Protection and Control Press. All rights reserved.
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页码：167 / 176
页数：9
相关论文
共 29 条
  • [1] WANG Zengping, LIN Yifeng, WANG Tong, Et al., Challenges and countermeasures to power system relay protection and safety control, Power System Protection and Control, 51, 6, pp. 10-20, (2023)
  • [2] LEI Zhaoyu, HAO Liangshou, DAI Jiashui, Et al., A review of fault location methods in HVDC transmission lines, Power System Protection and Control, 50, 11, pp. 178-187, (2022)
  • [3] TIAN Pengfei, YU You, DONG Ming, Et al., A CNN-SVM-based fault identification method for high-voltage transmission lines, Power System Protection and Control, 50, 13, pp. 119-125, (2022)
  • [4] CHEN Xiaolong, YU Lianke, PEI Dongfeng, Et al., A new fault location method for single-circuit three-terminal transmission lines based on fault branch determination and iterative calculation, Power System Protection and Control, 50, 20, pp. 1-11, (2022)
  • [5] YANG Xihang, HUANG Chun, SHEN Yatao, Et al., Fault location method for distribution lines based on loss power matching, Electric Power, 55, 8, pp. 113-120, (2022)
  • [6] WANG Chunming, LI Jie, XU Zhengqing, Et al., Research on single-ended fault location of transmission line based on transient information fusion, Journal of Electric Power Science and Technology, 37, 2, pp. 62-71, (2022)
  • [7] DENG Feng, LI Xinran, ZENG Xiangjun, Et al., Research on single-end traveling wave based protection and fault location method based on waveform uniqueness and feature matching in the time and frequency domain, Proceedings of the CSEE, 38, 5, pp. 1475-1487, (2018)
  • [8] CHEN Tiantian, LI Yinhong, Two-section traveling wave protection for flexible DC grid based on positive and negative difference of voltage refractive wave amplitude, Automation of Electric Power Systems, 46, 3, pp. 129-136, (2022)
  • [9] HU Bingying, LI Mei, Double ended traveling wave fault location in distribution network based on the time difference of zero-mode and line-mode, Electric Power Engineering Technology, 40, 2, pp. 114-120, (2021)
  • [10] ZHU Baihan, CHEN Yu, MA Jinjie, Wavefront steepness based single-ended traveling wave fault location for transmission lines, Automation of Electric Power Systems, 45, 9, pp. 130-135, (2021)
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