Modeling and harmonic suppression for distribution systems

Expansion of voltage distortions along with power distribution systems, which is referred to as the harmonic propagation, is pointed out. This is caused by the LC resonances between the distribution line inductances and the power capacitors. This paper presents a modeling and harmonic suppression procedure for power distribution systems. In our proposal, a power distribution system is analyzed using the modal analysis and is represented by a reduced order model. For the harmonic suppression, a series active filter is used and its controller is designed based on the reduced order model. Some significant characteristics are verified by using a single-phase simulated full order model.