2018 Georgia Tech Protective Relaying Conference

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AEP Experience with Sub-Synchronous Oscillation Phenomena

Recent installations of renewable energy resources in combination with series capacitor bank installations on AEPs network has renewed concerns about the power system phenomenon known as subsynchronous control interaction (SSCI) and subsynchronous resonance (SSR) on the AEP electrical network. In this paper, historical events which have occurred on the AEP transmission electrical network are illustrated which demonstrate the frequency and magnitude of the subsynchronous oscillation, the network conditions, and the protection system modifications made following the events. These events are further analyzed to support the development of a generic subsynchronous oscillation (SSO) detection relay algorithm. The signal processing techniques used to do this are illustrated, analyzed and the relay detection algorithm is demonstrated through simulation.

Zachary Campbell
American Electric Power
United States

 

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