Power Quality Analysing

There are quite a few reasons for measuring and analysing power quality nowadays. Potential interactions between end use equipment and electric distribution system, external electromagnetic interferences, resonant states between electrical circuits and some other factors call for a need to be analysed in order that harmful consequences can be omitted or prevented. Power quality analysing includes measurements of:

  • Phase to ground voltages;
  • Phase to neutral voltages;
  • Neutral to ground voltages;
  • Phase to phase voltages in three phase systems;
  • Phase currents;
  • Current in a neutral conductor;
  • Frequency;
  • Power Factor, cos φ;
  • Harmonic components of current and voltage and their direction;
  • Waveform of current and voltage at specific circumstances (peak magnitude, primary frequency, time of occurrence, rising rate);
  • Transients.