一种供电网络跳闸故障定位方法及系统

By combining discrete wavelet transform and neural networks, the problems of accuracy and real-time performance in fault location in complex power grid environments have been solved, achieving high-precision and fast-response fault location and improving the reliability and efficiency of power grid operation and maintenance.

CN120559386BActive Publication Date: 2026-07-17NANJING QIANGZE ELECTRIC CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING QIANGZE ELECTRIC CO LTD
Filing Date
2025-06-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing fault location technologies lack accuracy and real-time performance in complex power grid environments, and have excessively high requirements for time synchronization and data quality, making it difficult to achieve efficient fault location in high-noise and asynchronous data environments.

Method used

Discrete wavelet transform is used to extract high-frequency transient components, combined with cubic spline interpolation to calibrate timestamps, and fused with traveling wave analysis and fully connected neural networks. Through wavelet packet decomposition and least squares optimization methods, a comprehensive fault location report is generated and scheduling instructions are generated.

Benefits of technology

It significantly improves the accuracy and robustness of fault location, enabling rapid response and high-precision fault location in high-noise, multi-branch power grid environments, meeting the reliability and efficiency requirements of modern smart grids.

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Abstract

本发明公开了一种供电网络跳闸故障定位方法及系统,涉及供电网络管理技术领域,包括,将特征向量输入全连接神经网络模型输出模型特征向量,将校准后的时间序列中电流应用电流叠加积分法计算电流变化量,基于电流变化量计算时间窗内积分值,基于积分结果构造行波特征向量,并将行波特征向量与模型特征向量进行融合。通过离散小波变换提取高频暂态分量计算特征能量,有效捕捉故障引发的瞬态特征,通过融合行波特征向量与全连接神经网络模型特征向量,结合物理约束与数据驱动预测,显著提高定位的实时性和准确性,能够在多分支电网环境中实现高精度、快速响应的故障定位,满足现代智能电网对可靠性和效率的高要求。
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