Harmonic filter design using actual recorded data

The authors present a study of harmonic filter design to minimize harmonic distortion caused by a harmonic source such as drives. Several types of shunt harmonic filters are presented. The analysis includes the basic principles, the application of the Z-bus method, and the economic aspects for harmonic filter design. Offline steady-state simulation programs were used to model loads, to study variation of the harmonics, and to evaluate the effect of harmonic filters at various buses in the system. The performance of each filter design was tested using data recorded in local utility systems. A method of reducing resonance that may occur due to the presence of the filter is also suggested. The transient analysis of harmonic filters using the electromagnetic transients program (EMTP) is reported