Robust low-order load frequency controller in a deregulated environment

The electric power industry is in transition from large and regulated utilities to an industry that will incorporate competitive companies selling unbundled power at lower rates. The new structure of electric power systems, which includes separate companies with an open access policy demands novel control strategies to maintain the stability and eliminates the frequency error. Under current organization several approaches have already been proposed. This paper addresses the design and introduce of reduced load frequency controller based on μ-synthesis theorem for a possible structure in the new deregulated open access environment. We used the singular values of the observability matrix of the high order μ-controller for reducing the controller order.

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