Reactive Compensation Planning in Unbalanced Electrical Power Systems

This research focuses on finding the optimal location of reactive compensation in an unbalanced electrical power system (EPS). An EPS is named unbalanced when there is uncertainty in the behaviour of the power demand, which causes changes in the voltage profile and angle of each of the electrical po...

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Main Authors: Jair Salazar, Diego Carrión, Manuel Jaramillo
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/21/8048
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author Jair Salazar
Diego Carrión
Manuel Jaramillo
author_facet Jair Salazar
Diego Carrión
Manuel Jaramillo
author_sort Jair Salazar
collection DOAJ
description This research focuses on finding the optimal location of reactive compensation in an unbalanced electrical power system (EPS). An EPS is named unbalanced when there is uncertainty in the behaviour of the power demand, which causes changes in the voltage profile and angle of each of the electrical power phases. For this reason, using reactive compensation will improve the voltage profiles and the magnitudes of reactive power in the transmission lines. The proposed methodology uses the optimal AC power flows as a basis, which is applied to each power phase and, through this methodology, the operating conditions of the EPS are determined. Then, based on the voltage profiles of each power phase, it was possible to determine the critical nodes of the system, so that afterwards, through heuristics, it was possible to find the optimal location of the reactive compensation that independently meets the needs of each phase. To evaluate the proposed methodology, the IEEE test systems of 9, 14, 30 and 118 bus bars were used, as well as the 230 kV ring of the Ecuadorian transmission system. Finally, using the proposed methodology, it was possible to independently compensate for each of the power phases, rectifying the unbalanced voltage profiles that appeared in the EPS.
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spelling doaj.art-e9315b1f94734eef9f7ad682ccf36d862023-11-24T04:31:02ZengMDPI AGEnergies1996-10732022-10-011521804810.3390/en15218048Reactive Compensation Planning in Unbalanced Electrical Power SystemsJair Salazar0Diego Carrión1Manuel Jaramillo2Master’s Program in Electricity, Salesian Polytechnic University, Quito EC170702, EcuadorSmart Grid Research Group—GIREI (Spanish Acronym), Salesian Polytechnic University, Quito EC170702, EcuadorSmart Grid Research Group—GIREI (Spanish Acronym), Salesian Polytechnic University, Quito EC170702, EcuadorThis research focuses on finding the optimal location of reactive compensation in an unbalanced electrical power system (EPS). An EPS is named unbalanced when there is uncertainty in the behaviour of the power demand, which causes changes in the voltage profile and angle of each of the electrical power phases. For this reason, using reactive compensation will improve the voltage profiles and the magnitudes of reactive power in the transmission lines. The proposed methodology uses the optimal AC power flows as a basis, which is applied to each power phase and, through this methodology, the operating conditions of the EPS are determined. Then, based on the voltage profiles of each power phase, it was possible to determine the critical nodes of the system, so that afterwards, through heuristics, it was possible to find the optimal location of the reactive compensation that independently meets the needs of each phase. To evaluate the proposed methodology, the IEEE test systems of 9, 14, 30 and 118 bus bars were used, as well as the 230 kV ring of the Ecuadorian transmission system. Finally, using the proposed methodology, it was possible to independently compensate for each of the power phases, rectifying the unbalanced voltage profiles that appeared in the EPS.https://www.mdpi.com/1996-1073/15/21/8048reactive compensationoptimal power flowelectrical power-system planingunbalanced systemsoptimal location
spellingShingle Jair Salazar
Diego Carrión
Manuel Jaramillo
Reactive Compensation Planning in Unbalanced Electrical Power Systems
Energies
reactive compensation
optimal power flow
electrical power-system planing
unbalanced systems
optimal location
title Reactive Compensation Planning in Unbalanced Electrical Power Systems
title_full Reactive Compensation Planning in Unbalanced Electrical Power Systems
title_fullStr Reactive Compensation Planning in Unbalanced Electrical Power Systems
title_full_unstemmed Reactive Compensation Planning in Unbalanced Electrical Power Systems
title_short Reactive Compensation Planning in Unbalanced Electrical Power Systems
title_sort reactive compensation planning in unbalanced electrical power systems
topic reactive compensation
optimal power flow
electrical power-system planing
unbalanced systems
optimal location
url https://www.mdpi.com/1996-1073/15/21/8048
work_keys_str_mv AT jairsalazar reactivecompensationplanninginunbalancedelectricalpowersystems
AT diegocarrion reactivecompensationplanninginunbalancedelectricalpowersystems
AT manueljaramillo reactivecompensationplanninginunbalancedelectricalpowersystems