Power-Quality Improvement Using Wiener Filters Based On a Modular Compensating Strategy

This paper introduces a new modeless modular compensating strategy to extract and mitigate power-quality (PQ) disturbances. The main advantage of this strategy is that it does not require any model or state-space formulation to extract the disturbances, such as the other commonly used state-space techniques. In addition, it is very simple for practical implementation compared to the time-domain and frequency-domain methods. The proposed strategy depends on recursive implementation of the Wiener filtering theory. The suggested strategy is validated by digital simulation results on the most common stationary and transient PQ problems.