Modelling and analysis of resource scheduling in restructured power systems considering wind energy uncertainty

K. Srikanth Reddy, Lokesh Panwar, B. K. Panigrahi, Rajesh Kumar

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Concerns over rapid transformation of global climate patterns resulted in wide deployment of renewable energy sources especially wind energy. However, intermittent nature of wind energy makes resource scheduling aspect of system operator more complex. The emerging deregulation policies have added to the complexity of scheduling problem. Therefore, treating and scheduling of wind energy on deterministic basis would result in non-optimal energy dispatch and increased operation cost over scheduling horizon. This paper focuses on optimal scheduling methodology of wind energy in day ahead market (DAM) considering expected costs due to wind uncertainty in real time (RT) spot market under deregulated market structure. This paper introduces various possible costs, namely, spot market compensation cost, additional reserve cost and rescheduling cost applicable to deviation in scheduled power from DAM to spot market. The costs can be derived from front-end information of DAM, historical and statistical estimate of RT market conditions. The effectiveness of proposed methodology is examined using IEEE 30 bus system with thermal and wind energy generators. In addition, sensitivity analysis is performed to examine the effect of incentive margin on DAM scheduling. Simulation results are presented, discussed and affirmed the effectiveness of proposed scheduling methodology.

Original languageEnglish
Pages (from-to)736-760
Number of pages25
JournalInternational Journal of Sustainable Energy
Volume37
Issue number8
DOIs
Publication statusPublished - 14 Sept 2018
Externally publishedYes

Keywords

  • day ahead market
  • Independent system operator
  • market clearing price
  • spot market
  • spot market price
  • wind energy schedule
  • wind uncertainty handling

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • General Energy
  • Process Chemistry and Technology
  • Fluid Flow and Transfer Processes

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