Determination of the Thevenin equivalent in power grids using real records based on short circuit power
Abstract In recent years, methods for loadability determination based on real‐time measurements have been proposed for long‐term voltage stability scenarios. One of these methods corresponds to the reduction of the complete system into a basic Thevenin equivalent at a load bus. This paper proposes a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | IET Generation, Transmission & Distribution |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/gtd2.12003 |
| _version_ | 1818065229937901568 |
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| author | A. Fonseca G. Salazar F. Quilumba F. Pérez‐Yauli |
| author_facet | A. Fonseca G. Salazar F. Quilumba F. Pérez‐Yauli |
| author_sort | A. Fonseca |
| collection | DOAJ |
| description | Abstract In recent years, methods for loadability determination based on real‐time measurements have been proposed for long‐term voltage stability scenarios. One of these methods corresponds to the reduction of the complete system into a basic Thevenin equivalent at a load bus. This paper proposes a method to determine the Thevenin equivalent at a load bus in power systems based on short circuit power (SSC) and its application to real records. The proposed Thevenin equivalent evaluation is performed by processing two consecutive sets of voltage magnitude and power measurements, both recorded at the same bus of a power system. This method establishes a Thevenin equivalent based on the determination of system's equivalent voltage (VS) which is obtained from SSC. This condition properly accounts for variable power factor load conditions and constant power factor alike in contrast with existing methodologies which assume constant power factor loads. The performance of this method is evaluated with real records from the Ecuadorian electric power system and contrasted by simulation. |
| first_indexed | 2024-12-10T14:48:35Z |
| format | Article |
| id | doaj.art-dbddb8e1326545bd8f3ca55856412334 |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-12-10T14:48:35Z |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-dbddb8e1326545bd8f3ca558564123342022-12-22T01:44:31ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952021-01-01151132310.1049/gtd2.12003Determination of the Thevenin equivalent in power grids using real records based on short circuit powerA. Fonseca0G. Salazar1F. Quilumba2F. Pérez‐Yauli3Departamento de Energía Eléctrica Escuela Politécnica Nacional Quito EcuadorDepartamento de Energía Eléctrica Escuela Politécnica Nacional Quito EcuadorDepartamento de Energía Eléctrica Escuela Politécnica Nacional Quito EcuadorDepartamento de Energía Eléctrica Escuela Politécnica Nacional Quito EcuadorAbstract In recent years, methods for loadability determination based on real‐time measurements have been proposed for long‐term voltage stability scenarios. One of these methods corresponds to the reduction of the complete system into a basic Thevenin equivalent at a load bus. This paper proposes a method to determine the Thevenin equivalent at a load bus in power systems based on short circuit power (SSC) and its application to real records. The proposed Thevenin equivalent evaluation is performed by processing two consecutive sets of voltage magnitude and power measurements, both recorded at the same bus of a power system. This method establishes a Thevenin equivalent based on the determination of system's equivalent voltage (VS) which is obtained from SSC. This condition properly accounts for variable power factor load conditions and constant power factor alike in contrast with existing methodologies which assume constant power factor loads. The performance of this method is evaluated with real records from the Ecuadorian electric power system and contrasted by simulation.https://doi.org/10.1049/gtd2.12003Voltage controlControl of electric power systemsPower and energy measurementPower system controlStability in control theory |
| spellingShingle | A. Fonseca G. Salazar F. Quilumba F. Pérez‐Yauli Determination of the Thevenin equivalent in power grids using real records based on short circuit power IET Generation, Transmission & Distribution Voltage control Control of electric power systems Power and energy measurement Power system control Stability in control theory |
| title | Determination of the Thevenin equivalent in power grids using real records based on short circuit power |
| title_full | Determination of the Thevenin equivalent in power grids using real records based on short circuit power |
| title_fullStr | Determination of the Thevenin equivalent in power grids using real records based on short circuit power |
| title_full_unstemmed | Determination of the Thevenin equivalent in power grids using real records based on short circuit power |
| title_short | Determination of the Thevenin equivalent in power grids using real records based on short circuit power |
| title_sort | determination of the thevenin equivalent in power grids using real records based on short circuit power |
| topic | Voltage control Control of electric power systems Power and energy measurement Power system control Stability in control theory |
| url | https://doi.org/10.1049/gtd2.12003 |
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