Power

Quality

Any power problem manifested in voltage,
current, or frequency deviations that result
in failure ormisoperation of end users loads
and equipment connected to power system.

Failure and damage
of equipment

Additional losses

Malfunctioning of
protection devices

Process interruption
or slowdown

Penalties because of
low power quality

Production
losses

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

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

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, comlying with regulations

Renewables

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