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Power Quality Analysis

Electric power quality study is a systematic analysis to identify power qualities issues, look for the root causes and recommendations for improvement in an electrical system. Those issues are such as surges,harmonics, high frequency noise,transient voltages, wave distortion, interruptions, frequency variations, etc. Power quality studies are also meant a focused and systematic approach to solve complex problems in a power system. Power qualities analysis is for new builds and for existing plants.

The sensitivity of today’s electronic equipment makes it susceptible to power disturbance. For some devices, a momentary disturbance can cause scramble data, interrupted communication, a frozen mouse & system crashes or equipment failure. Monitor the quality of power routed from source to the plant/facility to identify the pollution in the electrical network related to power.

We can make electrical system and loads operation run smooth and more efficient by conducting detailed Power Quality Analysis.

Source of poor power quality

  • Nonlinear loads
  • Arcing loads
  • Switching operation
  • Reactive loads
  • Unstable loads

Typical Power Quality Problem

  • Voltage sags: A reduction in RMS Voltage or current at the power frequency.Voltage Surge: Voltage surge can be positive (higher than normal) or negative (Lower than normal).
  • Transient: it manifest only as short duration change in voltage due to switching ON and OFF the loads.
  • Harmonics: it is an integer multiple of fundamental frequency in the sine wave of power supply or simply distortion of waveform.

Impact of poor power quality

Benefit to the client