ABSTRACT
The most widespread standards for harmonic control worldwide are due to the Institute of Electrical and Electronics Engineers (IEEE) in the United States and the International Electrotechnical Commission (IEC) in the European Union. The standard contended with cumulative effects but did little to consider the strong interaction between harmonic producers and power system operation. Total and individual harmonic distortion levels were issued for customers on current and for utilities on voltage signals at the point of common coupling. The 1992 edition of the IEEE harmonic standard thus advocates the joint contribution of utilities and customers to contend with harmonic emission and control matters. Harmonic distortion limits were not specified for particular types of customers. Making customers play a part in this process ensures the direct benefit of minimizing the negative effects that harmonic currents may have at their premises. Regarding customer equipment, IEC standards specifically set harmonic levels aimed at protecting low-voltage systems at customer and utility installations.
