Volt/VAR control

Volt/VAR control

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The term 'VVC' stands for Volt/VAR control and refers to the technique of using voltage regulating devices and reactive power controls to maintain voltage levels within the accepted ranges at all points of the distribution system under all loading conditions. Modern software techniques and the progress on communication technologies allow nowadays achieving these goals and therefore the service quality has improved remarkably in most utilities throughout the world.

Chapter Contents:

  • 7.1 Definition of voltage regulation
  • 7.2 Options to improve voltage regulation
  • 7.3 Voltage regulators
  • 7.4 Capacitor application in distribution systems
  • 7.4.1 Feeder model
  • 7.4.2 Capacitor location and sizing
  • 7.4.3 Reduction in power losses with one capacitor bank
  • 7.4.4 Reduction in power losses with two capacitor banks
  • 7.4.5 Loss reductions with three capacitor banks
  • 7.4.6 Consideration of several capacitor banks
  • 7.4.7 Capacitor sizing and location using software
  • 7.5 Modeling of distribution feeders including VVC equipment
  • 7.6 Volt/VAR control considering SCADA
  • 7.7 Requirements for Volt/VAR control
  • 7.8 Integrated Volt/VAR control
  • Proposed exercise

Inspec keywords: reactive power control; voltage control

Other keywords: Volt-VAR control; distribution system analysis; voltage regulating devices; voltage levels; service quality; distribution system; reactive power controls; software techniques; communication technologies

Subjects: Control of electric power systems; Power and energy control; Voltage control; Power system control

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