Economic assessment of the explicit representation of ramping requirements on conventional generators in systems with integrated intermittent resources

Yannick Degeilh, Florent Cadoux, Nivad Navid, George Gross

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As the penetration of wind and solar resources deepens, grid operators must deal with increasing levels of variability and intermittency. While it becomes necessary to increase the reserves requirements to effectively manage such a resource mix, the speed at which the reserves can respond becomes of critical importance. Renewable resource power outputs such as those of wind units can change rapidly and grid operators need to ensure that the market outcomes produce resource dispatches that not only meet the load but are capable also to respond to any changes due to such variability that may occur within the hour of the corresponding market outcomes. We study to what extent the units that are able to provide the reserves can based on their respective up-and-down ramping capabilities appropriately respond to the variability in the loads and renewable resource outputs within the specified response time. We impose these requirements on the total ramping capabilities and introduce appropriate constraints in the market clearing formulation. We investigate the impacts on the resulting market dispatch outcomes and assess the economic costs over longer periods of operation. We illustrate the proposed approach with case studies in which we quantify the impacts of the incorporation of such ramping capability constraints to markets with real-sized power systems and evaluate the economics of the changes in the market outcomes.

Original languageEnglish (US)
Title of host publication2012 IEEE Power and Energy Society General Meeting, PES 2012
DOIs
StatePublished - 2012
Event2012 IEEE Power and Energy Society General Meeting, PES 2012 - San Diego, CA, United States
Duration: Jul 22 2012Jul 26 2012

Publication series

NameIEEE Power and Energy Society General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Other

Other2012 IEEE Power and Energy Society General Meeting, PES 2012
Country/TerritoryUnited States
CitySan Diego, CA
Period7/22/127/26/12

Keywords

  • Integrated Intermittent Resources
  • Pricing
  • Probabilistic Simulation
  • Ramping Requirements
  • Transmission-constrained Day Ahead Markets
  • Wind Power

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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