Droop-based active power curtailment for overvoltage prevention in grid connected PV inverters

R. Tonkoski, L. A.C. Lopes, T. H.M. EL-Fouly

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

59 Scopus citations

Abstract

Photovoltaics (PV) is considered a non-controllable power source which can create overvoltages in distribution feeders during periods of high generation and low load. This is usually prevented by limiting the penetration level of PV to very conservative values, even if the critical periods rarely occur. This paper discusses the use of droop based active power curtailment (APC) techniques for overvoltage prevention in radial low voltage (LV) feeders as a means for increasing the installed PV capacity and energy yield. Two schemes are considered and tested in a typical 240V/75kVA Canadian suburban distribution feeder with 12 houses equipped with roof-top PV systems. In the first scheme, all PV inverters have the same droop coefficients. In the second, the droop coefficients are proposed to be different so as to share the total active power curtailed, and consequent loss of revenue, among all PV inverters/houses. Simulation results demonstrate the effectiveness of the droop based APC schemes and that the option of sharing the power curtailment among all customers comes at the cost of an overall higher amount of power curtailed.

Original languageBritish English
Title of host publicationISIE 2010 - 2010 IEEE International Symposium on Industrial Electronics
Pages2388-2393
Number of pages6
DOIs
StatePublished - 2010
Event2010 IEEE International Symposium on Industrial Electronics, ISIE 2010 - Bari, Italy
Duration: 4 Jul 20107 Jul 2010

Publication series

NameIEEE International Symposium on Industrial Electronics

Conference

Conference2010 IEEE International Symposium on Industrial Electronics, ISIE 2010
Country/TerritoryItaly
CityBari
Period4/07/107/07/10

Keywords

  • Power distribution
  • Power quality and voltage control
  • Power systems
  • Solar power generation

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