Publication detail

Voltage Sensitivity to Power Flows Related to Distributed Generation

KOLACIA, T. DRÁPELA, J.

Original Title

Voltage Sensitivity to Power Flows Related to Distributed Generation

English Title

Voltage Sensitivity to Power Flows Related to Distributed Generation

Type

conference paper

Language

en

Original Abstract

The recent development of dispersed generation leads to fact that distribution grids have to deal with the bidirectional power flow which may cause voltage rise above permissible level. Currently used voltage regulation scheme cannot completely and successfully cope with this problem. As a result of the further increasing penetration of distributed generation, the new voltage regulation system will have to be developed. Voltage in the nodes, i.e. voltage profiles, and voltage regulation capability are strongly dependent on impedance between buses, especially when indirect voltage regulating devices (using current injection) are deployed. The paper presents two variants of the medium voltage distribution grid as well as low voltage distribution grid which differ in length of power lines to simulate minimum and maximum impedance at the supply point, thus to determine marginal voltage sensitivities to distributed generation induced power flows. Voltage sensitivity, which is estimated by means of parametrical simulations, shows how much the voltage changes if active and reactive powers are injected, respectively. The results would be used for further development of voltage regulation strategy taking into account the regulation effectiveness, mainly in relation to the regulation provided by the distributed resources.

English abstract

The recent development of dispersed generation leads to fact that distribution grids have to deal with the bidirectional power flow which may cause voltage rise above permissible level. Currently used voltage regulation scheme cannot completely and successfully cope with this problem. As a result of the further increasing penetration of distributed generation, the new voltage regulation system will have to be developed. Voltage in the nodes, i.e. voltage profiles, and voltage regulation capability are strongly dependent on impedance between buses, especially when indirect voltage regulating devices (using current injection) are deployed. The paper presents two variants of the medium voltage distribution grid as well as low voltage distribution grid which differ in length of power lines to simulate minimum and maximum impedance at the supply point, thus to determine marginal voltage sensitivities to distributed generation induced power flows. Voltage sensitivity, which is estimated by means of parametrical simulations, shows how much the voltage changes if active and reactive powers are injected, respectively. The results would be used for further development of voltage regulation strategy taking into account the regulation effectiveness, mainly in relation to the regulation provided by the distributed resources.

Keywords

Power Distribution; Dispersed Generation; Voltage Control; System Impedance; Medium and Low Voltage Grids; Voltage Sensitivity

Released

16.05.2016

Publisher

Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Electrical Power Engineering

Location

Prague, Czech Republic

ISBN

978-1-5090-0907-7

Book

Proceedings of the 2016 17th International Scientific Conference on Electric Power Engineering (EPE)

Edition

první

Edition number

1

Pages from

130

Pages to

135

Pages count

6

URL

BibTex


@inproceedings{BUT125570,
  author="Tomáš {Kolacia} and Jiří {Drápela}",
  title="Voltage Sensitivity to Power Flows Related to Distributed Generation",
  annote="The recent development of dispersed generation leads to fact that distribution grids have to deal with the
bidirectional power flow which may cause voltage rise above permissible level. Currently used voltage regulation scheme cannot completely and successfully cope with this problem. As a result of the further increasing penetration of distributed generation, the new voltage regulation system will have to be
developed. Voltage in the nodes, i.e. voltage profiles, and voltage regulation capability are strongly dependent on impedance between buses, especially when indirect voltage regulating devices (using current injection) are deployed. The paper presents two variants of the medium voltage distribution grid as well as low voltage distribution grid which differ in length of power lines to simulate minimum and maximum impedance at
the supply point, thus to determine marginal voltage sensitivities to distributed generation induced power flows. Voltage sensitivity, which is estimated by means of parametrical simulations, shows how much the voltage changes if active and reactive powers are injected, respectively. The results would be used for further development of voltage regulation strategy taking into account the regulation effectiveness, mainly in relation to the regulation provided by the distributed resources.",
  address="Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Electrical Power Engineering",
  booktitle="Proceedings of the 2016 17th International Scientific Conference on Electric Power
Engineering (EPE)",
  chapter="125570",
  doi="10.1109/EPE.2016.7521809",
  edition="první",
  howpublished="online",
  institution="Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Electrical Power Engineering",
  year="2016",
  month="may",
  pages="130--135",
  publisher="Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Electrical Power Engineering",
  type="conference paper"
}