Placement of static VAR compensators to minimize power system losses

Walid Hubbi, Takashi Hiyama

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A screening method to find the optimal location of static VAR compensators and other reactive elements in a power system to minimize the power loss is presented. The sensitivity of the power loss to reactive power injection at all the system buses is calculated. It is assumed that a low sensitivity at a bus indicates that adding a reactive element at that bus is not effective in reducing the power loss, Ploss. A 30-bus and a 57-bus systems are used to test the validity of this assumption. The computational requirements to calculate all the sensitivity coefficients are little more than one Newton-Raphson iteration of an ac load-flow analysis using an already factorized Jacobian.

Original languageEnglish (US)
Pages (from-to)95-99
Number of pages5
JournalElectric Power Systems Research
Issue number2
StatePublished - Oct 15 1998

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


  • Power system
  • Power system loss
  • Static VAR compensators


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