山东电力技术2025，Vol.52Issue(9)：23-31,9.DOI:10.20097/j.cnki.issn1007-9904.2025.09.003
基于相电压模变换和混沌振子的配电网故障选线方法研究
Research on Fault Line Selection Method for Distribution Networks Based on Phase Voltage Modal Transformation and Chaotic Oscillator
摘要
Abstract
To address the issue of low accuracy in identifying single-phase grounding faults and selecting fault lines in distribution networks,an innovative method based on phase voltage modal transformation and chaotic oscillators is proposed.First,modal transformation technique is employed to obtain the modal components of the voltage signals.Next,an optimized noise reduction and smoothing model is established to effectively balance the trade-off between waveform similarity and smoothness.This process not only reduces the impact of noise on the signals but also enhances the discernibility of fault features.Finally,the processed voltage modal components are input into a chaotic oscillator system to obtain the phase diagram trajectories for each line.The chaotic oscillator system captures the complex dynamic characteristics of the signals.By analyzing the texture parameters of the phase diagrams and utilizing the Euclidean distance method to assess the chaotic state of the trajectories,accurate fault line selection is achieved.Simulation results indicate that this method demonstrates strong robustness against factors such as transition resistance,fault closing angle,and noise interference,effectively improving the accuracy of fault line selection.关键词
故障选线/内禀模态函数/优良降噪/混沌振子/纹理参数Key words
fault line selection/intrinsic mode function/excellent noise reduction/chaotic oscillator/texture parameters分类
信息技术与安全科学引用本文复制引用
吕东飞,马涛,郭艳,刘广,孔雪城..基于相电压模变换和混沌振子的配电网故障选线方法研究[J].山东电力技术,2025,52(9):23-31,9.基金项目
国网山东省电力公司科技项目"10kV小电流接地系统单相接地故障精准判别处置技术研究"(520603240009). Science and Technology Project of State Grid Shandong Electric Power Company"Research on Precise Identification and Handling Technology for Single-phase Grounding Faults in 10 kV Low Current Grounding Systems"(520603240009). （520603240009）
