REAL-TIME MONITORING OF ELECTRIC POWER SYSTEM VOLTAGE STABILITY MARGINS
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United States of America Patent
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Issued Date -
Mar 14, 2013
app pub date -
Sep 7, 2012
filing date -
Sep 7, 2011
priority date (Note) -
Abandoned
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Abstract
The disclosure relates to a method of detecting and managing voltage instability in power systems operations. The disclosed method identifies and follows Thevenin and load impedance values as they fluctuate in a power system using synchrophasor measurements. The values are recursively estimated and entered into calculations to identify stability margins through a simple P-Q plane representation to determine if load shedding is necessary.
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