Data processing: generic control systems or specific application – Specific application – apparatus or process – Electrical power generation or distribution system
Reexamination Certificate
2006-10-09
2009-10-13
DeCady, Albert (Department: 2121)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Electrical power generation or distribution system
C700S292000, C700S294000
Reexamination Certificate
active
07603203
ABSTRACT:
A method of voltage instability load shedding, that includes the steps of measuring current and voltage waveforms of an electrical system at a local bus estimating the Thevenin equivalent admittance based on Kalman Filter techniques, then a voltage stability margin index is calculated using the voltage magnitude. The determined Thevenin admittance and the load at the local system bus and the calculated voltage stability margin index is compared with a predetermined threshold value to determine whether to initiate a load shedding action.
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Min Liang
Zhang Nan
Zhang Pei
DeCady Albert
Dunn Darrin
Electric Power Research Institute Inc.
Trego, Hines & Ladenheim PLLC
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