Clearing overloads in power transmission systems: a knowledge-based approach

摘要

This paper describes an expert system application for clearing emer- gency overloads in a power transmission system. A method employ- ing the network sensitivity factors is used to determine appropriate control actions and the amount of correction required to clear the overloads. The expert system developed on the basis of the commer- cial package VP-EXPERT. VP-EXPERT provides interactions with a power flow analysis package to calculate network sensitivity factors and line flows, and other external programs and databases. The rules for clearing overloads are introduced and the proposed approach is demonstrated on the six-bus and AEP 57-bus power system.