Harmonic Analysis Studies are required to insure that problems will not be introduced into the electrical distribution system due to non-linear loads. Loads which draw a non-sinusoidal current when a sinusoidal voltage is applied is defined as non-linear. The increased use of electronic power devices, which chop or abruptly switch power, introduces harmonics to the power system.
Harmonic currents can increase the heating of conductors and transformers to detrimental levels, as well as causing performance interference with some load devices. IEEE Standard 519 defines the characteristics of the harmonic distortion that is allowed at the interface point with the utility. A Harmonic Analysis Study will indicate if the power distribution system is in compliance with IEEE Standard 519.
Harmonic Analysis Studies are a prime aid in designing and implementing corrective filter systems for harmonic effect minimization. Study considerations include harmonic effects from power factor correction capacitors, resonance conditions, THD (Total Harmonic Distortion) percentage per IEEE 519, K-Factor calculations to meet UL Standards and ANSI C57.110 procedures.
For all Harmonic Investigation and Filter Design Studies each regional office of PAA uses the latest SKM HI_WAVE software package equipped for 2000 buses. SKM is an international leader in Electrical Systems Analysis software. All PAA Engineers are graduates of SKM training.