Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic Measurement
The measurement of Power Quality (PQ), generally performed at Low Voltage (LV) level, is gaining more and more importance also at the Medium Voltage (MV) level, due to the increasing presence of switching power converters (both loads or generators) directly connected to MV grids. In this case, the u...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Open Journal of Instrumentation and Measurement |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9857960/ |
| _version_ | 1827276345287114752 |
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| author | Gabriella Crotti Giovanni D'Avanzo Carmine Landi Palma Sara Letizia Mario Luiso |
| author_facet | Gabriella Crotti Giovanni D'Avanzo Carmine Landi Palma Sara Letizia Mario Luiso |
| author_sort | Gabriella Crotti |
| collection | DOAJ |
| description | The measurement of Power Quality (PQ), generally performed at Low Voltage (LV) level, is gaining more and more importance also at the Medium Voltage (MV) level, due to the increasing presence of switching power converters (both loads or generators) directly connected to MV grids. In this case, the use of Voltage Transformers (VTs) is unavoidable to scale voltage down to amplitudes compatible with the input ranges of PQ instruments. However, the current absence of an international standard dealing with VTs used for PQ measurements leaves the manufacturers and the users in a situation of complete uncertainty, since different products can have performance specifications tested and stated in completely different ways. This paper aims at defining an integrated approach for the evaluation of VTs accuracy used for PQ measurements, focusing on harmonics and interharmonics. The paper provides experimental results of the tests performed on a MV inductive VT according to the proposed procedure. As a result, it is demonstrated that VT accuracy in the measurement of a specific phenomenon should be evaluated with complex waveforms including the contemporary presence of different PQ phenomena. |
| first_indexed | 2024-04-24T06:43:46Z |
| format | Article |
| id | doaj.art-e106841d7e6349d3a70c92fcc5e8d56e |
| institution | Directory Open Access Journal |
| issn | 2768-7236 |
| language | English |
| last_indexed | 2024-04-24T06:43:46Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Instrumentation and Measurement |
| spelling | doaj.art-e106841d7e6349d3a70c92fcc5e8d56e2024-04-22T20:23:45ZengIEEEIEEE Open Journal of Instrumentation and Measurement2768-72362022-01-01111010.1109/OJIM.2022.31984739857960Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic MeasurementGabriella Crotti0https://orcid.org/0000-0001-7563-396XGiovanni D'Avanzo1https://orcid.org/0000-0001-9361-8309Carmine Landi2https://orcid.org/0000-0003-0922-883XPalma Sara Letizia3https://orcid.org/0000-0002-9251-3123Mario Luiso4https://orcid.org/0000-0003-1311-9791Metrologia dei materiali innovativi e scienze della vita, Istituto Nazionale di Ricerca Metrologica, Turin, ItalyDipartimento di Ingegneria, Università degli Studi della Campania “Luigi Vanvitelli,”, Aversa, ItalyDipartimento di Ingegneria, Università degli Studi della Campania “Luigi Vanvitelli,”, Aversa, ItalyMetrologia dei materiali innovativi e scienze della vita, Istituto Nazionale di Ricerca Metrologica, Turin, ItalyDipartimento di Ingegneria, Università degli Studi della Campania “Luigi Vanvitelli,”, Aversa, ItalyThe measurement of Power Quality (PQ), generally performed at Low Voltage (LV) level, is gaining more and more importance also at the Medium Voltage (MV) level, due to the increasing presence of switching power converters (both loads or generators) directly connected to MV grids. In this case, the use of Voltage Transformers (VTs) is unavoidable to scale voltage down to amplitudes compatible with the input ranges of PQ instruments. However, the current absence of an international standard dealing with VTs used for PQ measurements leaves the manufacturers and the users in a situation of complete uncertainty, since different products can have performance specifications tested and stated in completely different ways. This paper aims at defining an integrated approach for the evaluation of VTs accuracy used for PQ measurements, focusing on harmonics and interharmonics. The paper provides experimental results of the tests performed on a MV inductive VT according to the proposed procedure. As a result, it is demonstrated that VT accuracy in the measurement of a specific phenomenon should be evaluated with complex waveforms including the contemporary presence of different PQ phenomena.https://ieeexplore.ieee.org/document/9857960/Instrument transformersvoltage transformersharmonicsinterharmonicspower system measurementspower quality |
| spellingShingle | Gabriella Crotti Giovanni D'Avanzo Carmine Landi Palma Sara Letizia Mario Luiso Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic Measurement IEEE Open Journal of Instrumentation and Measurement Instrument transformers voltage transformers harmonics interharmonics power system measurements power quality |
| title | Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic Measurement |
| title_full | Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic Measurement |
| title_fullStr | Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic Measurement |
| title_full_unstemmed | Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic Measurement |
| title_short | Evaluation of Voltage Transformers’ Accuracy in Harmonic and Interharmonic Measurement |
| title_sort | evaluation of voltage transformers x2019 accuracy in harmonic and interharmonic measurement |
| topic | Instrument transformers voltage transformers harmonics interharmonics power system measurements power quality |
| url | https://ieeexplore.ieee.org/document/9857960/ |
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