Error calculation of broadband standard current transformer based on equal-ampere-turn principle
Due to the lack of corresponding devices and traceability systems for wide-band current transformer verification, the wide-band current measurement requirements of many power systems cannot be solved. The most important problem is that the wide-band standard current transformer cannot be transmitted...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-08-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722005200 |
| _version_ | 1811268111804923904 |
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| author | Gang Liu Kun Liu Bing Ai Jiefu Zhang Lan Zeng Sujie Liu |
| author_facet | Gang Liu Kun Liu Bing Ai Jiefu Zhang Lan Zeng Sujie Liu |
| author_sort | Gang Liu |
| collection | DOAJ |
| description | Due to the lack of corresponding devices and traceability systems for wide-band current transformer verification, the wide-band current measurement requirements of many power systems cannot be solved. The most important problem is that the wide-band standard current transformer cannot be transmitted by the superior measurement agency. This article proposes a method of self-estimating errors using the principle of equal ampere-turns. The key is to use the absolute error of the 5/5 ratio to calculate the errors of other ratios. Not only does the error extrapolate to the windings with the same ampere turns, but also expands. To windings with different ampere turns, the frequency has also expanded from power frequency to broadband. Through the analysis of the circuit model of the current transformer, the rationality of the calculation process is demonstrated, and the effectiveness of the method and the accuracy of the data are verified by actual measurement. This method is of great significance to the ongoing research of new low-frequency power grids in power systems and to solve other broadband current measurement needs. |
| first_indexed | 2024-04-12T21:15:53Z |
| format | Article |
| id | doaj.art-3c16776f267a4c73a8134404869fd048 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-12T21:15:53Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-3c16776f267a4c73a8134404869fd0482022-12-22T03:16:27ZengElsevierEnergy Reports2352-48472022-08-01810431050Error calculation of broadband standard current transformer based on equal-ampere-turn principleGang Liu0Kun Liu1Bing Ai2Jiefu Zhang3Lan Zeng4Sujie Liu5Corresponding author.; State Grid Sichuan Electric Power Corporation Metering Canter, Chengdu, ChinaState Grid Sichuan Electric Power Corporation Metering Canter, Chengdu, ChinaState Grid Sichuan Electric Power Corporation Metering Canter, Chengdu, ChinaState Grid Sichuan Electric Power Corporation Metering Canter, Chengdu, ChinaState Grid Sichuan Electric Power Corporation Metering Canter, Chengdu, ChinaState Grid Sichuan Electric Power Corporation Metering Canter, Chengdu, ChinaDue to the lack of corresponding devices and traceability systems for wide-band current transformer verification, the wide-band current measurement requirements of many power systems cannot be solved. The most important problem is that the wide-band standard current transformer cannot be transmitted by the superior measurement agency. This article proposes a method of self-estimating errors using the principle of equal ampere-turns. The key is to use the absolute error of the 5/5 ratio to calculate the errors of other ratios. Not only does the error extrapolate to the windings with the same ampere turns, but also expands. To windings with different ampere turns, the frequency has also expanded from power frequency to broadband. Through the analysis of the circuit model of the current transformer, the rationality of the calculation process is demonstrated, and the effectiveness of the method and the accuracy of the data are verified by actual measurement. This method is of great significance to the ongoing research of new low-frequency power grids in power systems and to solve other broadband current measurement needs.http://www.sciencedirect.com/science/article/pii/S2352484722005200Broadband current transformerDirect measurement methodStandard transformerMeasurement traceability |
| spellingShingle | Gang Liu Kun Liu Bing Ai Jiefu Zhang Lan Zeng Sujie Liu Error calculation of broadband standard current transformer based on equal-ampere-turn principle Energy Reports Broadband current transformer Direct measurement method Standard transformer Measurement traceability |
| title | Error calculation of broadband standard current transformer based on equal-ampere-turn principle |
| title_full | Error calculation of broadband standard current transformer based on equal-ampere-turn principle |
| title_fullStr | Error calculation of broadband standard current transformer based on equal-ampere-turn principle |
| title_full_unstemmed | Error calculation of broadband standard current transformer based on equal-ampere-turn principle |
| title_short | Error calculation of broadband standard current transformer based on equal-ampere-turn principle |
| title_sort | error calculation of broadband standard current transformer based on equal ampere turn principle |
| topic | Broadband current transformer Direct measurement method Standard transformer Measurement traceability |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722005200 |
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