High level control of security and optimizing functions

A three-level approach to the security and optimization of a power system is suggested involving existing techniques such as the optimal power flow and optimizing switching, rule-based techniques (expert systems), and decision support systems. Based on a very comprehensive definition of the security problem, the functions of the various techniques are derived. Examples are given where expert systems or the interaction of the operator become indispensable. A graph-based approach is worked out in which the methods are integrated. Additional rules are given for the control of the scheme. Further experience is extractable from the models and methods used in the scheme, which still must be complemented by the experience of the system operator.<>