Abstract

An optimization method for the proper selection of the LC compensator values taking into account cost constraints is described for nonlinear loads. The solution will be obtained with an optimization algorithm based on the reduced gradient technique, which will locate maximum power factors by searching along the constant–cost power factor ridges for the point where the gradient of the transmission loss is zero. It is assumed that both the equivalent source and load are considered to generate harmonics. Also, it is assumed that the load harmonics are not sufficiently serious to suggest tuned filters, but when combined with source harmonics, the use of a pure capacitive compensator would degrade power factor and overload equipment. Consequently, a LC compensator is selected.

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