Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and Frequency
The use of capacitive dividers (CDs) in medium-voltage (MV) networks started as simple voltage detectors and as rough voltage measurement instruments for protective purposes. Now, with the spread of intelligent electronic devices and renewable energy sources at the distribution level, capacitive div...
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MDPI AG
2021-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/5/1719 |
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doaj-f7de287cc8114fa7950720e33cd0c6692021-03-03T00:02:41ZengMDPI AGSensors1424-82202021-03-01211719171910.3390/s21051719Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and FrequencyAlessandro Mingotti0Federica Costa1Gaetano Pasini2Lorenzo Peretto3Roberto Tinarelli4Department of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, ItalyDepartment of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, ItalyDepartment of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, ItalyDepartment of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, ItalyDepartment of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, ItalyThe use of capacitive dividers (CDs) in medium-voltage (MV) networks started as simple voltage detectors and as rough voltage measurement instruments for protective purposes. Now, with the spread of intelligent electronic devices and renewable energy sources at the distribution level, capacitive dividers are designed and installed to perform accurate voltage measurements. Such a requirement is mandatory when the power quality has to be assessed. Therefore, CDs are currently being used either for power frequency or for high-frequency (supraharmonic- or partial-discharge-level) measurements. In this paper, typical off-the-shelf CDs are studied and modeled to understand how they behave in a wide range of frequencies and when the temperature varies. To this purpose, specific setups and tests have been developed and performed. From the results, it is clear that with proper modeling of CDs, it is possible to exploit them for measuring phenomena in a wide range of frequencies, including the effects due to temperature variations and self-resonances.https://www.mdpi.com/1424-8220/21/5/1719capacitive dividermodelingsetupprocedurevoltage dividercapacitor |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Alessandro Mingotti Federica Costa Gaetano Pasini Lorenzo Peretto Roberto Tinarelli |
| spellingShingle |
Alessandro Mingotti Federica Costa Gaetano Pasini Lorenzo Peretto Roberto Tinarelli Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and Frequency Sensors capacitive divider modeling setup procedure voltage divider capacitor |
| author_facet |
Alessandro Mingotti Federica Costa Gaetano Pasini Lorenzo Peretto Roberto Tinarelli |
| author_sort |
Alessandro Mingotti |
| title |
Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and Frequency |
| title_short |
Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and Frequency |
| title_full |
Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and Frequency |
| title_fullStr |
Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and Frequency |
| title_full_unstemmed |
Modeling Capacitive Low-Power Voltage Transformer Behavior over Temperature and Frequency |
| title_sort |
modeling capacitive low-power voltage transformer behavior over temperature and frequency |
| publisher |
MDPI AG |
| series |
Sensors |
| issn |
1424-8220 |
| publishDate |
2021-03-01 |
| description |
The use of capacitive dividers (CDs) in medium-voltage (MV) networks started as simple voltage detectors and as rough voltage measurement instruments for protective purposes. Now, with the spread of intelligent electronic devices and renewable energy sources at the distribution level, capacitive dividers are designed and installed to perform accurate voltage measurements. Such a requirement is mandatory when the power quality has to be assessed. Therefore, CDs are currently being used either for power frequency or for high-frequency (supraharmonic- or partial-discharge-level) measurements. In this paper, typical off-the-shelf CDs are studied and modeled to understand how they behave in a wide range of frequencies and when the temperature varies. To this purpose, specific setups and tests have been developed and performed. From the results, it is clear that with proper modeling of CDs, it is possible to exploit them for measuring phenomena in a wide range of frequencies, including the effects due to temperature variations and self-resonances. |
| topic |
capacitive divider modeling setup procedure voltage divider capacitor |
| url |
https://www.mdpi.com/1424-8220/21/5/1719 |
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