Optimal Generation Dispatch With High Penetration of Photovoltaic Generation

Sara Eftekharnejad, Gerald Thomas Heydt, Vijay Vittal

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


Power system operation practices are changing with the addition of renewable energy resources such as photovoltaic (PV) sources. The diverse and intermittent nature of these resources demands new operation strategies to ensure system reliability. As more PV units are added to power systems, the power generated by conventional generation resources should be reduced to accommodate these new resources. The reduction in fossil-fired generation allows realization of benefits in the sustainability of the generation mix. While some of the conventional generating units are retired, some should be retained for system reliability. This paper investigates the impact of generation redispatch or generation displacement in systems with high PV penetration. Comparing various study scenarios, a method based on regression techniques and Chebyshev's inequality is introduced in this paper. This method is used to calculate the dispatch or displacement ratio of the conventional generators for optimal steady state and transient response of the system. Recommendations are formulated based on an actual large-scale power system in the western United States.

Original languageEnglish (US)
Article number6843957
Pages (from-to)1013-1020
Number of pages8
JournalIEEE Transactions on Sustainable Energy
Issue number3
StatePublished - Jul 1 2015
Externally publishedYes


  • Chebyshev inequality
  • converter
  • distributed power generation
  • generation dispatch
  • photovoltaic (PV) generation
  • power system stability

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment


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