Optimal shunt compensation for improving voltage stability and transfer capability in Metropolitan area of the Korean power system

Yunhyuk Choi, Byong Jun Lee, Taekyun Kim

Research output: Contribution to journalArticle


This paper deals with shunt compensation to eliminate voltage violation and enhance transfer capability, which is motivated towards implementation in the Korean power system. The optimal shunt compensation algorithm has demonstrated its effectiveness in terms of voltage accuracy and reducing the number of actions of reactive power compensating devices. The main shunt compensation devices are capacitor and reactor. Effects of control devices are evaluated by cost computations. The control objective at present is to keep the voltage profile of a key bus 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 occurs important event from system. Case studies with metropolitan area of the Korean power system are presented to illustrate the method.

Original languageEnglish
Pages (from-to)1503-1508
Number of pages6
JournalJournal of Electrical Engineering and Technology
Issue number4
Publication statusPublished - 2015 Jul 1



  • Key bus
  • Optimization
  • Shunt compensation
  • Transfer capability
  • Voltage stability

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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