What are Harmonic Studies?

Harmonic studies are performed to determine harmonic distortion levels and filtering requirements within a facility and to determine if harmonic voltages and currents are at acceptable levels. Field measurements and computer simulations are used to characterize adjustable-speed drives (ASDs) and other nonlinear loads and simulations are then performed to determine the filter specifications and effectiveness. The application of harmonic filters will significantly alter the frequency response of the power system. An evaluation of the harmonic voltage and current limits, (e.g., IEEE Std. 519) is completed to determine the effectiveness of the proposed filter installation.

Why are Harmonic Studies important?

  • Avoids damage due to excessive harmonic currents in transformers and capacitor banks.
  • Ensures sensitive electronic equipment will not malfunction due to excessive harmonic voltage distortion.    
  • Satisfies the utility's voltage and current harmonic distortion requirements.

Harmonic studies should be considered whenever there are solid state drivers or electric furnaces and capacitor banks in the power system.

Contact Us for more information on Harmonic Studies.

 
 
 

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