Power

Quality

Power quality is any power problem manifested in voltage, current, or frequency deviations that result in failure or mis operation of end users loads and equipment connected to the power system.

Power Quality Effects

Grid Operators

  • Failure of capacitor banks
  • Trip of protective devices
  • Overstressing insulation equipment
  • Increased system losses
  • Resonance problems
  • Poor supply voltage quality (EN50160)

End-Users

  • Process interruption/slowdown
  • Equipment damage
  • Failure of computer and network systems
  • Data Loss
  • Noise interference in telecommunication lines
  • Failure of household appliances

Products

Parameters

Transients

Impulsive
Oscillatory

Short Duration Variations

Interruption
Sag&swell

Long Duration Variations

Undervoltage
Overvoltage

Voltage Unbalance

Waveform Distortion

Harmonics
Notches

Power Frequency

Variations

Application Areas

Industry

Elimination of current and voltage harmonics, avoiding reactive energy penalties and smoothing voltage variations

Utilities

Voltage regulation on lines and cables, increasing system efficiency with less reactive power and harmonics, complying with regulations

Renewables

Complying with grid codes for continuous and efficient operation, smoothing voltage to increase production