TUNING OF PSS BASED ON SUB-OPTIMAL H_∞ FOR NATAL SYSTEM

摘要

PSS tuned using classical techniques often do not result in a robust or well-tuned PSS. In this paper, a tuning method is presented using sub-optimal H_∞ This method has many of the benefits of optimal H_∞ and has the advantage of keeping the PSS structure and improving the overall damping of all weakly damped modes in the power system. In this paper the method will be applied to a model of the Natal Hydro-Electric Plant in South Africa. It will be shown that the PSS tuned using this method is more robust than PSS tuned using classical techniques.