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Local Voltage Control in Distribution Networks using PI Control of Active and Reactive Power

Lundberg, Martin LU ; Samuelsson, Olof LU and Hillberg, Emil (2022) Power Systems Computation Conference
Abstract
Overvoltage is becoming increasingly prevalent in distribution networks with high penetration of renewable distributed energy sources (DERs). Local control of converter-based resources is a flexible and scalable method to prevent this growing issue. Reactive power is used for voltage control in many local control schemes. However, the typical range of R/X ratios for distribution power lines indicates that mitigation of overvoltage often requires excessive amounts of reactive power. Complete reliance on reactive power thus limits the effectiveness of local control strategies. In this work we instead propose a method that combines enhanced power factor voltage control with upper voltage limit tracking using PI control. We develop a modelling... (More)
Overvoltage is becoming increasingly prevalent in distribution networks with high penetration of renewable distributed energy sources (DERs). Local control of converter-based resources is a flexible and scalable method to prevent this growing issue. Reactive power is used for voltage control in many local control schemes. However, the typical range of R/X ratios for distribution power lines indicates that mitigation of overvoltage often requires excessive amounts of reactive power. Complete reliance on reactive power thus limits the effectiveness of local control strategies. In this work we instead propose a method that combines enhanced power factor voltage control with upper voltage limit tracking using PI control. We develop a modelling framework and demonstrate the stability of the proposed method. We then simulate the nonlinear operation of two parallel PI controllers in a medium voltage test system. (Less)
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author
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publishing date
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Contribution to conference
publication status
published
subject
conference name
Power Systems Computation Conference
conference location
Porto
conference dates
2022-06-27
language
English
LU publication?
yes
id
77849fd7-bf05-4a37-be51-4b8bc2887a39
alternative location
https://pscc-central.epfl.ch/repo/papers/2022/20300.pdf
date added to LUP
2022-09-15 11:20:51
date last changed
2022-09-23 12:46:57
@misc{77849fd7-bf05-4a37-be51-4b8bc2887a39,
  abstract     = {{Overvoltage is becoming increasingly prevalent in distribution networks with high penetration of renewable distributed energy sources (DERs). Local control of converter-based resources is a flexible and scalable method to prevent this growing issue. Reactive power is used for voltage control in many local control schemes. However, the typical range of R/X ratios for distribution power lines indicates that mitigation of overvoltage often requires excessive amounts of reactive power. Complete reliance on reactive power thus limits the effectiveness of local control strategies. In this work we instead propose a method that combines enhanced power factor voltage control with upper voltage limit tracking using PI control. We develop a modelling framework and demonstrate the stability of the proposed method. We then simulate the nonlinear operation of two parallel PI controllers in a medium voltage test system.}},
  author       = {{Lundberg, Martin and Samuelsson, Olof and Hillberg, Emil}},
  language     = {{eng}},
  title        = {{Local Voltage Control in Distribution Networks using PI Control of Active and Reactive Power}},
  url          = {{https://pscc-central.epfl.ch/repo/papers/2022/20300.pdf}},
  year         = {{2022}},
}