Improving Power Quality in AC Supply Grids
This paper describes a digital and actual model of the UPQC (Unified Power Quality Conditioner) integrated system for power quality improvement. The UPQC’s design and its connection to an AC supply grid, 1-phase and 3-phase alike, provide effective compensation of unwanted interferences in the wavef...
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| Format: | Article |
| Language: | English |
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ENERGA SA
2015-12-01
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| Series: | Acta Energetica |
| Subjects: | |
| Online Access: | http://actaenergetica.org/en/articles/acta-energetica-042015/improving-power-quality-in-ac-supply-grids/ |
| _version_ | 1818210567602569216 |
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| author | Piotr Fabijański |
| author_facet | Piotr Fabijański |
| author_sort | Piotr Fabijański |
| collection | DOAJ |
| description | This paper describes a digital and actual model of the UPQC (Unified Power Quality Conditioner) integrated system for power quality improvement. The UPQC’s design and its connection to an AC supply grid, 1-phase and 3-phase alike, provide effective compensation of unwanted interferences in the waveforms of load supply voltages and non-linear load currents. This article presents
an overview of topologies and control strategies. The study of the UPQC confirmed its positive impact on the power quality. The electricity parameters were significantly improved. Total
harmonic distortion in supply voltage THDu decreased six-fold to 1.89%, and total harmonic distortion in load current THDi decreased more than ten-fold to 2.38% for a non-linear load
(uncontrolled bridge rectifier with load L). Additionally, symmetrisation of supply voltages and reactive power compensation Q of linear load was obtained. The UPQC integrated system for power quality improvement can be used wherever high-quality and PN-EN 50160 standard – compliant electricity is required. |
| first_indexed | 2024-12-12T05:18:40Z |
| format | Article |
| id | doaj.art-d0d04e9c892a45878f545da54221c70e |
| institution | Directory Open Access Journal |
| issn | 2300-3022 |
| language | English |
| last_indexed | 2024-12-12T05:18:40Z |
| publishDate | 2015-12-01 |
| publisher | ENERGA SA |
| record_format | Article |
| series | Acta Energetica |
| spelling | doaj.art-d0d04e9c892a45878f545da54221c70e2022-12-22T00:36:41ZengENERGA SAActa Energetica2300-30222015-12-01254152110.12736/issn.2300-3022.2015402Improving Power Quality in AC Supply GridsPiotr Fabijański0Warsaw University of TechnologyThis paper describes a digital and actual model of the UPQC (Unified Power Quality Conditioner) integrated system for power quality improvement. The UPQC’s design and its connection to an AC supply grid, 1-phase and 3-phase alike, provide effective compensation of unwanted interferences in the waveforms of load supply voltages and non-linear load currents. This article presents an overview of topologies and control strategies. The study of the UPQC confirmed its positive impact on the power quality. The electricity parameters were significantly improved. Total harmonic distortion in supply voltage THDu decreased six-fold to 1.89%, and total harmonic distortion in load current THDi decreased more than ten-fold to 2.38% for a non-linear load (uncontrolled bridge rectifier with load L). Additionally, symmetrisation of supply voltages and reactive power compensation Q of linear load was obtained. The UPQC integrated system for power quality improvement can be used wherever high-quality and PN-EN 50160 standard – compliant electricity is required.http://actaenergetica.org/en/articles/acta-energetica-042015/improving-power-quality-in-ac-supply-grids/power qualityUPQCAPFTHD ratioHD ratio |
| spellingShingle | Piotr Fabijański Improving Power Quality in AC Supply Grids Acta Energetica power quality UPQC APF THD ratio HD ratio |
| title | Improving Power Quality in AC Supply Grids |
| title_full | Improving Power Quality in AC Supply Grids |
| title_fullStr | Improving Power Quality in AC Supply Grids |
| title_full_unstemmed | Improving Power Quality in AC Supply Grids |
| title_short | Improving Power Quality in AC Supply Grids |
| title_sort | improving power quality in ac supply grids |
| topic | power quality UPQC APF THD ratio HD ratio |
| url | http://actaenergetica.org/en/articles/acta-energetica-042015/improving-power-quality-in-ac-supply-grids/ |
| work_keys_str_mv | AT piotrfabijanski improvingpowerqualityinacsupplygrids |