Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography
The corrosion diagnosis of grounding grid can locate the corroded branches and provide guidance for the maintenance and repair of the grounding grid. This paper proposed the electrical impedance tomography (EIT) method on the corrosion diagnosis of grounding grid and described how it works. Firstly,...
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| Format: | Article |
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MDPI AG
2018-07-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/7/1739 |
| _version_ | 1798000009600303104 |
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| author | Xing Li Fan Yang Julan Ming Ammad Jadoon Sheng Han |
| author_facet | Xing Li Fan Yang Julan Ming Ammad Jadoon Sheng Han |
| author_sort | Xing Li |
| collection | DOAJ |
| description | The corrosion diagnosis of grounding grid can locate the corroded branches and provide guidance for the maintenance and repair of the grounding grid. This paper proposed the electrical impedance tomography (EIT) method on the corrosion diagnosis of grounding grid and described how it works. Firstly, the inverse problem model of the electrical impedance tomography on grounding grid is developed. Secondly, in order to weaken the ill-posedness of the inverse problem, a Newton iterative algorithm with Tikhonov regularization is proposed to solve the problem. Then, due to the high resistivity contrast between the soli and steel and the large size of imaging region, this paper presents the method of soil-separation and block-diagnosis to accomplish these problems. Finally, field experiments were carried out to verify the effectiveness of the proposed method and the results show that the location and degree of the corrosion in the grounding grid can be easily judged from the imaging results. |
| first_indexed | 2024-04-11T11:13:27Z |
| format | Article |
| id | doaj.art-ee9564e247c74b73b442cfb894dd9817 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T11:13:27Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ee9564e247c74b73b442cfb894dd98172022-12-22T04:27:19ZengMDPI AGEnergies1996-10732018-07-01117173910.3390/en11071739en11071739Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance TomographyXing Li0Fan Yang1Julan Ming2Ammad Jadoon3Sheng Han4State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaHangzhou Yineng Electric Technology Co., Ltd., Hangzhou 310014, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaThe corrosion diagnosis of grounding grid can locate the corroded branches and provide guidance for the maintenance and repair of the grounding grid. This paper proposed the electrical impedance tomography (EIT) method on the corrosion diagnosis of grounding grid and described how it works. Firstly, the inverse problem model of the electrical impedance tomography on grounding grid is developed. Secondly, in order to weaken the ill-posedness of the inverse problem, a Newton iterative algorithm with Tikhonov regularization is proposed to solve the problem. Then, due to the high resistivity contrast between the soli and steel and the large size of imaging region, this paper presents the method of soil-separation and block-diagnosis to accomplish these problems. Finally, field experiments were carried out to verify the effectiveness of the proposed method and the results show that the location and degree of the corrosion in the grounding grid can be easily judged from the imaging results.http://www.mdpi.com/1996-1073/11/7/1739corrosion diagnosisgrounding gridelectrical impedance tomographyTikhonov regularizationsoil-separation |
| spellingShingle | Xing Li Fan Yang Julan Ming Ammad Jadoon Sheng Han Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography Energies corrosion diagnosis grounding grid electrical impedance tomography Tikhonov regularization soil-separation |
| title | Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography |
| title_full | Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography |
| title_fullStr | Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography |
| title_full_unstemmed | Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography |
| title_short | Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography |
| title_sort | imaging the corrosion in grounding grid branch with inner source electrical impedance tomography |
| topic | corrosion diagnosis grounding grid electrical impedance tomography Tikhonov regularization soil-separation |
| url | http://www.mdpi.com/1996-1073/11/7/1739 |
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