Harmographic analysis was developed by Power Quality Expert to innovate and enhance the traditional analysis of electrical harmonics. Harmographic analysis produces a unique visual “heat map” representation of an electrical systems harmonic profile.  The harmographic analysis algorithm can process power quality measurements from the commonly available power quality analysers that are used to carry out power quality surveys. We use the power quality measurements to visualise the harmonic data into separate positive, negative and zero sequence sectors in the form of a phasor style diagram.

The harmographic analysis technique can also be employed to process groups of harmonics or individual harmonic frequencies to produce a harmographic image specific to different types of connected loads or to visualise supply side harmonic compliance with unique visualisations of the harmonic components present in an electrical system.

Harmography

When looking at harmonic mitigation and solutions, harmographic analysis can be used for both pre and post harmonic surveys to help identify the harmonic frequencies and distortion present. The harmographic maps can help highlight and present the before and after results in a more recognisable and engaging manor for engineers and clients, enabling them to review the effectiveness of the power quality solutions employed