Comprehensive Harmonics Analysis
Harmonic distortions are one of the most common and irritating problems in industrial environment. We need to identify the source of harmonics and suppress them for a better power quality supply. Harmonics are integer multiple of fundamental frequency. The frequency of each harmonic component is known as harmonic frequency. Power system harmonics are low-frequency phenomena. Voltage and current harmonics have undesirable effects on power system operation and power system components. The distorted voltage waveform can affect equipment performance. Such distorted voltages and currents can result into overheating of cables, transformers etc. and can also cause excessive voltage drops. If large amount of harmonic currents are demanded by load and are required to be supplied by utility company, the utility company equipment is also subjected to ill effects of these power quality disturbances.
In view of limiting commercial impact of this demand raised by consumer, normally utility companies bind consumer into legal compliance requirements related to power quality. Such requirements usually are based on some international standards. One such standard related to harmonic compliance applicable at “Point of common coupling” or PCC is IEEE 519 2014. We use this IEEE-519 standards for harmonic analysis studies.Harmonic analysis is the process of identifying the harmonic distortions occur in the electrical distribution system. These studies are conducted considering the worst case of operation which gives the high amount of harmonic distortions exceeding the standards.