| 应用准稳态测量及小波变换的接地网腐蚀检测 |
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| 引用本文： | 杨滔,彭敏放,沈美娥,雷将锋,何怡刚. 应用准稳态测量及小波变换的接地网腐蚀检测[J]. 仪器仪表学报, 2011, 32(9) |
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| 作者姓名： | 杨滔 彭敏放 沈美娥 雷将锋 何怡刚 |
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| 作者单位： | 1. 湖南大学电气工程与信息工程学院 长沙410082
2. 北京信息科技大学 北京100101 |
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| 基金项目： | 国家自然科学基金(No.61173108,No.60673084,No.60973032); 湖南省自然科学基金重点(No.10JJ2045); 国家杰出青年科学基金(No.50925727)资助项目 |
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| 摘 要： | 基于准稳态测量技术、电路理论及小波变换,提出了一种接地网腐蚀状态检测方法.该法通过模拟接地网的腐蚀,构建其等效电路模型,采用准稳态测量来获取表征接地导体腐蚀状态的极化电阻值Rp,进一步计算得到其腐蚀速率和腐蚀深度,从而实现接地网在不同腐蚀程度下的状态检测.同时,考虑到接地网现场检测时干扰信号多而强,采用小波变换滤除了测试环境对准稳态测量响应信号的干扰.现场测试结果表明,所提方法可行且检测结果较为准确.
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| 关 键 词： | 腐蚀检测 接地网 准稳态测量 小波变换 腐蚀速率 腐蚀深度 |
Corrosion detection of grounding grids using quasi-steady-state measurement and wavelet transform |
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| Yang Tao,Peng Minfang,Shen Mei'e,Lei Jiangfeng,He Yigang. Corrosion detection of grounding grids using quasi-steady-state measurement and wavelet transform[J]. Chinese Journal of Scientific Instrument, 2011, 32(9) |
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| Authors: | Yang Tao Peng Minfang Shen Mei'e Lei Jiangfeng He Yigang |
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| Affiliation: | Yang Tao1,Peng Minfang1,Shen Mei'e2,Lei Jiangfeng1,He Yigang 1(1 College of Electrical and Information Engineering,Hunan University,Changsha 410082,China,2 Beijing University of Information Science and Technology,Beijing 100101,China) |
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| Abstract: | Based on quasi-steady-state measurement technology,circuit theory and wavelet transform,a corrosion detection method for grounding grids is presented.Equivalent circuit models are constructed through simulating the corrosion of grounding grids,and the polarization resistance RP is obtained using quasi-steady-state measurement;moreover the corrosion rate and corrosion depth of grid conductors are also calculated.Then the corrosion states of the grounding grids are recognized.Furthermore,wavelet transform is ... |
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| Keywords: | corrosion detection grounding grid quasi-steady-state measurement wavelet transform corrosion rate corrosion depth |
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