NYISO logoThe project investigated the feasibility of separating bulk power systems in a controlled manner for the purpose of maintaining stability in individual electric islands. A complex East Interconnection bulk power system model in PSS®E was studied in terms of different dispatch patterns. A broad range of disturbances was investigated for system dynamics.

The outcomes of the project included:

  • Identification of coherent groups of generators in the bulk power system
  • Construction of time-domain indicators for system instability
  • Determination of separation timing during a catastrophic event
  • Coordination of under-frequency load shedding and out-of-step tripping protection with the controlled separation scheme

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