Defect identification and location method of cable cross-bonded box based on head-end circulation
It is difficult to identify and locate the defects quickly when the long cable line cross-bonded box has defects such as grounding,water inflow and three-phase sequence error. Aiming at three types of typical defects of cross-bonded box,a cross-bonded model of long cable lines is established to anal...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Power Engineering Technology
2022-05-01
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| Series: | 电力工程技术 |
| Subjects: | |
| Online Access: | https://www.epet-info.com/dlgcjs/article/abstract/210331353?st=article_issue |
| _version_ | 1811296066396487680 |
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| author | FANG Chunhua GUO Kaige FANG Wen PU Ziheng HU Dongsan TAO Yuning |
| author_facet | FANG Chunhua GUO Kaige FANG Wen PU Ziheng HU Dongsan TAO Yuning |
| author_sort | FANG Chunhua |
| collection | DOAJ |
| description | It is difficult to identify and locate the defects quickly when the long cable line cross-bonded box has defects such as grounding,water inflow and three-phase sequence error. Aiming at three types of typical defects of cross-bonded box,a cross-bonded model of long cable lines is established to analyze the amplitude and phase change rule of circulation under the defects. Then,the curve fitting of the ratio of circulation at both ends and the scatter data of defect box number are carried out to obtain the defect location formulas. Finally,it is verified by an example. The results show that the circulation amplitude of the defective phase increases and the non-defective phase is normal when the ground is grounded inside the box. When the phase sequence is wrong,the amplitude of two-phase circulation increases obviously,and the amplitude of the other phase circulation is smaller. When the tank is filled with water,the circulation amplitude of each phase increases and is basically equal. The fitting degree of the positioning formula is about 0.96,and the range of defect box number can be determined through the example verification. The proposed method is not affected by the change of wire core current and ground resistance,and can provide reference for the defect identification and location of long cable line cross-bonded box. |
| first_indexed | 2024-04-13T05:42:50Z |
| format | Article |
| id | doaj.art-3a0f01cdba664ef48561ea14c80ca01c |
| institution | Directory Open Access Journal |
| issn | 2096-3203 |
| language | zho |
| last_indexed | 2024-04-13T05:42:50Z |
| publishDate | 2022-05-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj.art-3a0f01cdba664ef48561ea14c80ca01c2022-12-22T03:00:02ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032022-05-01413647110.12158/j.2096-3203.2022.03.008Defect identification and location method of cable cross-bonded box based on head-end circulationFANG Chunhua0GUO Kaige1FANG Wen2PU Ziheng3HU Dongsan4TAO Yuning5School of Electrical and New Energy, China Three Gorges University, Yichang 443002, ChinaSchool of Electrical and New Energy, China Three Gorges University, Yichang 443002, ChinaSchool of Electrical and New Energy, China Three Gorges University, Yichang 443002, ChinaSchool of Electrical and New Energy, China Three Gorges University, Yichang 443002, ChinaSchool of Electrical and New Energy, China Three Gorges University, Yichang 443002, ChinaSchool of Electrical and New Energy, China Three Gorges University, Yichang 443002, ChinaIt is difficult to identify and locate the defects quickly when the long cable line cross-bonded box has defects such as grounding,water inflow and three-phase sequence error. Aiming at three types of typical defects of cross-bonded box,a cross-bonded model of long cable lines is established to analyze the amplitude and phase change rule of circulation under the defects. Then,the curve fitting of the ratio of circulation at both ends and the scatter data of defect box number are carried out to obtain the defect location formulas. Finally,it is verified by an example. The results show that the circulation amplitude of the defective phase increases and the non-defective phase is normal when the ground is grounded inside the box. When the phase sequence is wrong,the amplitude of two-phase circulation increases obviously,and the amplitude of the other phase circulation is smaller. When the tank is filled with water,the circulation amplitude of each phase increases and is basically equal. The fitting degree of the positioning formula is about 0.96,and the range of defect box number can be determined through the example verification. The proposed method is not affected by the change of wire core current and ground resistance,and can provide reference for the defect identification and location of long cable line cross-bonded box.https://www.epet-info.com/dlgcjs/article/abstract/210331353?st=article_issuecable linecross-bonded boxsheath circulationthe circulation ratiodefect identificationdefect location |
| spellingShingle | FANG Chunhua GUO Kaige FANG Wen PU Ziheng HU Dongsan TAO Yuning Defect identification and location method of cable cross-bonded box based on head-end circulation 电力工程技术 cable line cross-bonded box sheath circulation the circulation ratio defect identification defect location |
| title | Defect identification and location method of cable cross-bonded box based on head-end circulation |
| title_full | Defect identification and location method of cable cross-bonded box based on head-end circulation |
| title_fullStr | Defect identification and location method of cable cross-bonded box based on head-end circulation |
| title_full_unstemmed | Defect identification and location method of cable cross-bonded box based on head-end circulation |
| title_short | Defect identification and location method of cable cross-bonded box based on head-end circulation |
| title_sort | defect identification and location method of cable cross bonded box based on head end circulation |
| topic | cable line cross-bonded box sheath circulation the circulation ratio defect identification defect location |
| url | https://www.epet-info.com/dlgcjs/article/abstract/210331353?st=article_issue |
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