基于多重分形谱的交流输电线路运行故障识别方法  

Operation Fault Identification Method of AC Transmission Line Based on Multifractal Spectrum

作　　者：朱凌 李国强 刘琦 周华敏 ZHU Ling;LI Guo-qiang;LIU Qi;ZHOU Hua-min(Guangdong Power Grid Co.,Ltd.,Guangzhou 510000 China;Machine Patrol Management Center of Guangdong Power Grid Co.,Ltd.,Guangzhou 510000 China)

机构地区：[1]广东电网有限责任公司,广东广州510000 [2]广东电网有限责任公司机巡管理中心,广东广州510000

出　　处：《自动化技术与应用》2025年第2期44-47,51,共5页Techniques of Automation and Applications

摘　　要：人工方法在检查输电线路是否存在运行故障时工作量极大,且极易造成人员伤亡,因此基于多重分形谱设计交流输电线路运行故障识别方法。通过均值滤波算法处理像素值,去除交流输电线路图像中的噪声:采用多重分形理论提取去噪后的交流输电线路图像特征:最后,根据图像特征提取结果,计算故障节点之间的欧氏距离,通过最小距离判别函数判断节点是否发生故障,建立交流输电线路运行故障分类识别模型。实验结果表示,该方法可以完成交流输电线路运行故障的识别工作,与其他方法相比,故障节点吻合,能够准确识别交流输电线路中的故障节点。The manual method has a huge workload when checking whether the transmission line has operational faults,and it is very easy to cause casualties.Therefore,based on the multifractal spectrum,the operation fault identification method of the AC transmission line is designed.The pixel value is processed by the mean filtering algorithm,and the noise in the AC transmission line image is removed.The multifractal theory is used to extract the denoised AC Transmission line image features.According to the results of image feature extraction,the Euclidean distance between faulty nodes is calculated,the minimum distance discriminant function is used to determine whether the node is faulty,and the AC transmission line operation fault classification and recognition model is established.The results show that this method can complete the operation fault identification of AC transmission lines.Compared with others,the fault nodes are consistent,so this method can accurately identify the fault nodes in AC transmission lines.

关 键 词：多重分形谱 交流输电线路 故障识别 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置] TM85[自动化与计算机技术—控制科学与工程]