Enhance Power Systems Stability
Over the past decade, the North American Electric Reliability Corporation (NERC) has observed a marked increase in frequency stability problems. Frequency response in the Eastern Interconnection, for example, has deteriorated significantly during this period, causing progressively smaller power disturbances to induce significant frequency deviations.
Frequency stability problems for islanded or large interconnected power systems are becoming a major concern, not only in North America but globally. For large power systems, stability improvement can produce an increase of hundreds of MW transmission capacity, representing millions of dollars per year.