Quantification and Mitigation of Unfairness in Active Power Curtailment of Rooftop Photovoltaic Systems Using Sensitivity Based Coordinated Control

Aadil Latif, Wolfgang Gawlik, Peter Palensky

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Abstract

With increasing photovoltaic (PV) penetration in low voltage networks (LVNs), voltage regulation is a challenge. Active power curtailment (APC) is one possible solution for mitigating over voltages resulting from active power injection in LVNs. There is an inherent unfairness in the APC scheme. When generation is high and consumption is low, the voltages at the end of the feeder tend to be the highest. This results in high curtailment of active power output of the inverters located at the end of the feeder and low or even no curtailment for the inverts located closer to the transformer. A secondary voltage controller has been implemented to mitigate this unfairness in APC based voltage support schemes. The focus of this work is to quantify this unfairness and develop
methods that enable residential PV owners serviced by the same feeder to participate equally in voltage regulation in the LVN.
Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalEnergies
Volume9
Issue number6
DOIs
Publication statusPublished - 2016

Bibliographical note

This article belongs to the Special Issue Distributed Renewable Generation.

Keywords

  • over-voltage
  • active power curtailment (APC)
  • coordinated control
  • sensitivity based control

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