An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical Systems
The paper deals with a novel method to measure inter-area oscillations, i.e., electromechanical oscillations involving groups of generators geographically distant from one another and ranging within the frequency interval from 0.1 Hz up to 1 Hz. The estimation of the parameters characterizing inter-...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/15/2935 |
| _version_ | 1798034594158608384 |
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| author | Francesco Bonavolontà Luigi Pio Di Noia Davide Lauria Annalisa Liccardo Salvatore Tessitore |
| author_facet | Francesco Bonavolontà Luigi Pio Di Noia Davide Lauria Annalisa Liccardo Salvatore Tessitore |
| author_sort | Francesco Bonavolontà |
| collection | DOAJ |
| description | The paper deals with a novel method to measure inter-area oscillations, i.e., electromechanical oscillations involving groups of generators geographically distant from one another and ranging within the frequency interval from 0.1 Hz up to 1 Hz. The estimation of the parameters characterizing inter-area oscillations is a crucial objective in order to take the necessary actions to avoid the instability of the transmission electrical system. The proposed approach is a signal-based method, which uses samples of electrical signals acquired by the phasor measurement unit (PMU) and processes them to extract the individual oscillations and, for each of them, determine their characteristic parameters such as frequency and damping. The method is based on Hilbert transformations, but it is optimized through further algorithms aiming at (i) improving the ability to separate different oscillatory components, even at frequencies very close to each other, (ii) enhancing the accuracy associated with the damping estimates of each oscillation, and (iii) increasing the robustness to the noise affecting the acquired signal. Results obtained in the presence of signals involving the composition of two oscillations, whose damping and frequency have been varied, are presented. Tests were conducted with signals either synthesized in simulated experiment or generated and acquired with actual laboratory instrumentation. |
| first_indexed | 2024-04-11T20:46:30Z |
| format | Article |
| id | doaj.art-9054399ec5094a618685cf32bf1f7ac9 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T20:46:30Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-9054399ec5094a618685cf32bf1f7ac92022-12-22T04:04:02ZengMDPI AGEnergies1996-10732019-07-011215293510.3390/en12152935en12152935An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical SystemsFrancesco Bonavolontà0Luigi Pio Di Noia1Davide Lauria2Annalisa Liccardo3Salvatore Tessitore4Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Napoli, ItalyDepartment of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Napoli, ItalyDepartment of Industrial Engineering, University of Naples Federico II, 80125 Napoli, ItalyDepartment of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Napoli, ItalyDepartment of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Napoli, ItalyThe paper deals with a novel method to measure inter-area oscillations, i.e., electromechanical oscillations involving groups of generators geographically distant from one another and ranging within the frequency interval from 0.1 Hz up to 1 Hz. The estimation of the parameters characterizing inter-area oscillations is a crucial objective in order to take the necessary actions to avoid the instability of the transmission electrical system. The proposed approach is a signal-based method, which uses samples of electrical signals acquired by the phasor measurement unit (PMU) and processes them to extract the individual oscillations and, for each of them, determine their characteristic parameters such as frequency and damping. The method is based on Hilbert transformations, but it is optimized through further algorithms aiming at (i) improving the ability to separate different oscillatory components, even at frequencies very close to each other, (ii) enhancing the accuracy associated with the damping estimates of each oscillation, and (iii) increasing the robustness to the noise affecting the acquired signal. Results obtained in the presence of signals involving the composition of two oscillations, whose damping and frequency have been varied, are presented. Tests were conducted with signals either synthesized in simulated experiment or generated and acquired with actual laboratory instrumentation.https://www.mdpi.com/1996-1073/12/15/2935damping estimationHilbert transformoscillations reshapingnonlinear least square approximation |
| spellingShingle | Francesco Bonavolontà Luigi Pio Di Noia Davide Lauria Annalisa Liccardo Salvatore Tessitore An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical Systems Energies damping estimation Hilbert transform oscillations reshaping nonlinear least square approximation |
| title | An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical Systems |
| title_full | An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical Systems |
| title_fullStr | An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical Systems |
| title_full_unstemmed | An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical Systems |
| title_short | An Optimized HT-Based Method for the Analysis of Inter-Area Oscillations on Electrical Systems |
| title_sort | optimized ht based method for the analysis of inter area oscillations on electrical systems |
| topic | damping estimation Hilbert transform oscillations reshaping nonlinear least square approximation |
| url | https://www.mdpi.com/1996-1073/12/15/2935 |
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