Artificial intelligence applications to security control in power systems

Intelligent systems can play an advisory role, suggesting the necessary actions which should be taken to clear emergency or abnormal conditions in a power system. This paper outlines some experience in the development and implementation of intelligent knowledge based systems. An expert system for clearing overloads was developed using the Leonardo expert system shell. The system applies the network sensitivity factors to determine appropriate actions which include generation rescheduling, line switching and load shedding, and the amount of the required corrections, The expert system for voltage control was developed based on the VP-EXPERT shell. It detects voltage violations and provides a set of effective control actions to solve given voltage problems.