DISTRIBUTED GENERATION UNDERFREQUENCY PROTECTION

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• DISTRIBUTED GENERATION UNDERFREQUENCY PROTECTION
• SYSTEM IMPACTS
• Mr. JAMES INGLESON Dr. ERIC ALLEN
• New York ISO New York ISO
• ingleson_at_nyiso.org
  eallen_at_nyiso.com

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MECHANICAL RESONANCES
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MACHINE SPECIFICATIONS
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MACHINE UNDERFREQUENCY PROTECTION
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INTERCONNECTION FREQUENCY RANGE
Nominal System Frequency 60.000
Hertz Possible Deviation for Large
Contingency 59.950 Hertz Extreme
Deviation 59.900 Hertz First Step
UFLS 59.300 Hertz Second Step UFLS 58.800
Hertz Machine Resonances begin to appear
-58.000 Hertz
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INTERCONNECTION FREQUENCY RANGE
Nominal System Frequency 60.000
Hertz Possible Deviation for Large
Contingency 59.950 Hertz Extreme
Deviation 59.900 Hertz First Step
UFLS 59.300 Hertz Second Step UFLS 58.800
Hertz Machine Resonances begin to appear
-58.000 Hertz
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• DISTRIBUTED GENERATION UNDERFREQUENCY PROTECTION
• SYSTEM IMPACTS
• Mr. JAMES INGLESON Dr. ERIC ALLEN
• New York ISO New York ISO
• ingleson_at_nyiso.org
  eallen_at_nyiso.com