董亮,姚知林,葛彩刚,石超杰,陈金泽.地铁杂散电流干扰下管地电位波动特征的傅里叶分析[J].表面技术,2021,50(2):294-303.
DONG Liang,YAO Zhi-lin,GE Cai-gang,SHI Chao-jie,CHEN Jin-ze.Fourier Analysis of the Fluctuation Characteristics of Pipe-to-Soil Potential under Metro Stray Current Interference[J].Surface Technology,2021,50(2):294-303 |
| 地铁杂散电流干扰下管地电位波动特征的傅里叶分析 |
| Fourier Analysis of the Fluctuation Characteristics of Pipe-to-Soil Potential under Metro Stray Current Interference |
| 投稿时间：2020-07-05 修订日期：2020-09-14 |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.02.031 |
| 中文关键词: 埋地管道 地铁 杂散电流 管地电位 快速傅里叶变换 干扰频率 |
| 英文关键词:buried pipeline, metro, stray current, pipe-to-soil potential, fast Fourier transform, interference frequency |
| 基金项目:国家自然科学基金项目(51401017);江苏省研究生科研与实践创新计划项目(SJCX19_0671);2018年江苏省油气储运技术重点实验室开放课题 |
|
|
| Author | Institution |
| DONG Liang | Jiangsu Key Laboratory of Oil & Gas Storage and Transportation Technology, Changzhou University, Changzhou 213164, China |
| YAO Zhi-lin | Jiangsu Key Laboratory of Oil & Gas Storage and Transportation Technology, Changzhou University, Changzhou 213164, China |
| GE Cai-gang | Beijing Cathtop Technology Co., Ltd, Beijing 100028, China |
| SHI Chao-jie | Jiangsu Key Laboratory of Oil & Gas Storage and Transportation Technology, Changzhou University, Changzhou 213164, China |
| CHEN Jin-ze | Jiangsu Key Laboratory of Oil & Gas Storage and Transportation Technology, Changzhou University, Changzhou 213164, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 辨识埋地管道受到地铁杂散电流干扰时管地电位的波动特征。方法 对上海、广州、深圳、武汉等4个城市中与地铁轨道邻近而受干扰的埋地管道进行24 h管地电位测试，并利用ORIGIN软件对管地电位数据分别进行快速傅里叶变换处理，统计分析不同城市埋地管道中地铁杂散电流干扰频率的分布特征。结果 管地通电电位对杂散电流干扰的响应快，傅里叶变换后具有明显的幅值和频率分布特征，统计发现同一测试点在干扰的不同时段内，幅值较大即占主导的干扰频率范围接近，最大幅值对应的干扰主频率一致。上海、广州、深圳、武汉等4个城市测试点地铁杂散电流干扰中占主导的干扰频率范围分别为6~33、5~37、6~18、4~36 mHz，干扰主频率分别为9、7、7、5 mHz，对应的地铁杂散电流干扰周期范围和主周期均与附近地铁线的站间行车间隔范围和主要站间行车间隔吻合，这表明测试点附近地铁线的站间行车间隔决定了地铁杂散电流的干扰周期。结论 地铁杂散电流干扰下管地电位经傅里叶变换后能够得到其干扰频率范围及分布特征，结合地铁线的站间行车间隔可以辨识出地铁杂散电流的具体干扰来源，并为管道防腐或杂散电流腐蚀实验研究提供参考。 |
| 英文摘要: |
| In order to identify the fluctuation characteristics of pipe-to-soil potentials on buried pipelines with metro stray current interference, 24-hour pipe-to-soil potentials were tested on interfered buried pipelines which were close to the metro system in four cities including Shanghai, Guangzhou, Shenzhen and Wuhan. Then, fast Fourier transform (FFT) on those pipeline potential data was conducted by ORIGIN software, and the interference frequency was analyzed in different cities. The results showed that the pipe-to-soil potential responds quickly to stray current interference, and obvious amplitude and frequency distribution characteristics was found based on the on potential of buried pipeline after Fourier transform. The ranges of frequency with larger amplitude are close to each other, and the main interference frequencies with the largest amplitude are the same during different periods of interference. The ranges of dominant interference frequency of metro stray current in Shanghai, Guangzhou, Shenzhen and Wuhan test locations are 6~33 mHz, 5~37 mHz, 6~18 mHz and 4~36 mHz, respectively, and the main interference frequencies of metro stray current in four cities are 9 mHz, 7 mHz, 7 mHz, and 5 mHz, respectively, which are consistent with the main locomotive driving intervals between the stations of the nearby metro. Therefore, the interference cycles of metro stray current are determined by the locomotive driving intervals between metro stations. It can be concluded that the interference frequency range and distribution characteristics of the pipe-to-soil potential under the interference of metro stray current can be obtained after Fourier transform, and the interference source of metro stray current can be identified based on the correlation between the range of frequency characteristics obtained by FFT method and the locomotive driving intervals of metro system, which can provide reference for pipeline protection and experimental research on stray current corrosion. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号