A study on voltage and reactive power control methodology using integer programming and local subsystem

Tae Kyun Kim, Yun Hyuk Choi, Sang Soo Seo, Byong Jun Lee

Research output: Contribution to journalArticle

14 Citations (Scopus)


This paper proposes an voltage and reactive power control methodology, which is motivated towards implementation in the korea power system. The main voltage control devices are capacitor banks, reactor banks and LTC transformers. Effects of control devices are evaluated by local subsystem's cost computations. This local subsystem is decided by 'Tier' and 'Electrical distance' in the whole system. The control objective at present is to keep the voltage profile within constraints with minimum switching cost. A robust control strategy is proposed to make the control feasible and optimal for a set of power-flow cases that may occur important event from system. This studies conducted for IEEE 39-bus low and high voltage contingency cases indicate that the proposed control methodology is much more effective than PSS/E simulation tool in deciding switching of capacitor and reactor banks.

Original languageEnglish
Pages (from-to)543-550
Number of pages8
JournalTransactions of the Korean Institute of Electrical Engineers
Issue number4
Publication statusPublished - 2008 Apr 1



  • Integer programming
  • Local subsystem
  • Optimization
  • Voltage control

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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