Optimizing Primary Response in Preventive Security-Constrained Optimal Power Flow

Yury Dvorkin, Pierre Henneaux, Daniel S. Kirschen, Hrvoje Pandzic

Research output: Contribution to journalArticlepeer-review


Preventive security-constrained optimal power flow (PSCOPF) dispatches controllable generators at minimum cost while ensuring that the system adheres to all operating constraints. All the transmission and generation limits are respected during both the pre- and post-contingency states without relying on post-contingency redispatch. Therefore, all credible generation contingencies should be modeled in PSCOPF and the system-wide automatic primary response should be allocated accordingly among synchronized generators by adjusting their droop coefficients. This paper proposes a new PSCOPF model that optimizes the droop coefficients of the synchronized generators. The cost savings attained with the proposed approach and its computational performance are evaluated. Different wind penetration levels and reserve policies are tested using annual simulations on the one- and three-area IEEE Reliability Test System.

Original languageEnglish (US)
Pages (from-to)414-423
Number of pages10
JournalIEEE Systems Journal
Issue number1
StatePublished - Mar 2018


  • Optimal power flow
  • power system economics
  • power system security
  • primary frequency regulation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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