A Particle swarm optimization for reactive power and voltage control considering voltage security assessment

Hirotaka Yoshida, Kenichi Kawata, Yoshikazu Fukuyama, Shinichi Takayama, Yosuke Nakanishi

Research output: Contribution to journalArticle

1077 Citations (Scopus)


This paper presents a particle swarm optimization (PSO) for reactive power and voltage control (Volt/Var Control: VVC) considering voltage security assessment (VSA). VVC can be formulated as a mixed-integer nonlinear optimization problem (MINLP). The proposed method expands the original PSO to handle a MINLP and determines an on-line VVC strategy with continuous and discrete control variables such as automatic voltage regulator (AVR) operating values of generators, tap positions of on-load tap changer (OLTC) of transformers, and the number of reactive power compensation equipment. The method considers voltage security using a continuation power flow and a contingency analysis technique. The feasibility of the proposed method is demonstrated and compared with reactive tabu search (RTS) and the enumeration method on practical power system models with promising results.

Original languageEnglish
Pages (from-to)1232-1239
Number of pages8
JournalIEEE Transactions on Power Systems
Issue number4
Publication statusPublished - 2000 Dec 1



  • Continuation power flow
  • Evolutionary computation
  • Mixed-integer nonlinear optimization problem
  • Particle swarm optimization
  • Reactive power and voltage control
  • Voltage security assessment

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this