Power system restoration by joint usage of expert system and mathematical programming approach

This paper aims to develop a suitable restoration method by a joint usage of an expert system (ES) and a mathematical programming (MP) approach. Under this devise, the optimal target system for restoration is formulated as an MP problem and solved efficiently by the decomposition-coordination strategy; that is the whole problem is decomposed into subproblems according to the generic knowledge of experts. The introduction of a new concept “restorative operation cost” that reflects the various restoration strategies has decreased the number of rules in the knowledge-base to one third that of typical existing ES´s. The validity and effectiveness of the combined method have been demonstrated by its application to a practical size restoration problem