弹性波PSO OMP的时间频率分析,用于下导体平钢缺陷
Jing Zhang1, Wei Liu2, Minghui Bao2
1State Key Laboratory of Power Transmission Equipment and System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing, 400044, China.
Scientific reports
|May 20, 2025
概括
这项研究引入了一种新的弹性波方法,用于精确定位接地网的缺陷. 该技术使用粒子集群优化直角匹配追求 (PSO-OMP) 进行信号无声化,以低于10%的误差实现准确的缺陷定位.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 信号处理 信号处理
背景情况:
- 接地网中的缺陷定位对于电力基础设施的完整性至关重要.
- 信号采集通常因环境因素和干扰的噪音而受损.
- 现有的方法难以准确检测早期缺陷.
研究的目的:
- 提出和验证一个强大的方法,用于缺陷定位在接地网下载导体平钢接地电网.
- 通过先进的消噪和重建技术来提高信号质量.
- 为传统的检查方法提供成本效益高效的替代方案.
主要方法:
- 利用粒子群集优化直角匹配追求 (PSO-OMP) 进行信号重建和无声化.
- 分析了计算成本,并将PSO-OMP与传统和AI拒绝算法进行统计比较.
- 使用平滑的伪维格纳维尔分布来分析重建信号的时间频率.
- 结合时间延迟和传感器距离,以准确计算缺陷位置.
主要成果:
- 与其他方法相比,PSO-OMP显著降低了噪音和提高了信号质量.
- 通过详细分析确定了PSO-OMP算法的最佳参数.
- 提出的方法在缺陷位置上实现了不到10%的相对误差.
- 在接地系统中成功识别了早期阶段的裂 (10-25毫米).
结论:
- 以弹性波为基础的方法与PSO-OMP无声化为接地系统缺陷检测提供了具有成本效益的解决方案.
- 这种方法大大降低了维护成本 (超过90%) 和尽量减少停机时间与挖掘相比.
- 该方法在电力基础设施的早期裂检测方面表现出高精度和效率.
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