Data processing: structural design – modeling – simulation – and em – Simulating electronic device or electrical system – Power system
Reexamination Certificate
2007-08-21
2010-10-19
Frejd, Russell (Department: 2128)
Data processing: structural design, modeling, simulation, and em
Simulating electronic device or electrical system
Power system
C703S002000
Reexamination Certificate
active
07818159
ABSTRACT:
Disclosed herein are an intelligent system and method for monitoring a generator reactive power limit using machine model parameters. The intelligent system and method for monitoring a generator reactive power limit using machine model parameters can calculate a maximum reactive power limit corresponding to over-excitation and a generator terminal voltage corresponding to under-excitation, estimate a correct field current even when system variable are changed, and monitor the generator reactive power limit by using machine model parameters and a one-machine infinite bus, to thereby supply a maximum or minimum reactive power to a power system within an allowable generator reactive power limit and prevent a generator trip caused by the reactive power limit and a power failure over a wide area.
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Brand et al., K.P. Three-Phase Measurement Evaluation Using a High-Speed Processor with Snapshot Facility, IEEE Transactions on Power Delivery, vol. 3, Iss. 3, Jul. 1988, pp. 867-873.
Bolsens et al., B. Three-Phase Observer-based Low Distortion Grid Current Controller Using an LCL Output Filter, IEEE, Power Electronics Specialists Conference, 2005, pp. 1705-1711.
Kim Dong Joon
Moon Young Hwan
Yoon Jae Young
Frejd Russell
Korea Electrotechnology Research Institute
Thomas Kayden Horstemeyer & Risley LLP
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