Equal-Area Criterion Applied on Power Transfer Corridors

Emil Hillberg and Trond Toftevaag


Equal-area criterion, Power system stability, Wide area monitoring, protection and control, Security assessment, Power transfer corridor


This paper presents a novel adaptation of the equal-area criterion. The adapted criterion provides a new possibility to study the stability criteria of critical power transfer corridors, supporting the specification of the secure power transfer capacity of the interconnected power system. Furthermore, the authors describe how the adapted equal-area criterion can be employed in the design of System Integrity Protection Schemes to prevent instability and mitigate consequences of extraordinary events. The concept is tested on the benchmark model IEEE Reliability Test System 1996.

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