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Your search keyword '"Chow, Joe H."' showing total 18 results
Start Over Author "Chow, Joe H." Topic voltage stability
18 results on '"Chow, Joe H."'

1. An Optimal Thévenin Equivalent Estimation Method and its Application to the Voltage Stability Analysis of a Wind Hub.

Author

Burchett, Stephen M., Douglas, Daniel, Ghiocel, Scott G., Liehr, Maximilian W. A., Chow, Joe H., Kosterev, Dmitry, Faris, Anthony, Heredia, Eric, and Matthews, Gordon H.

Subjects
EQUIVALENT electric circuits, DIRECT currents, ELECTRIC potential, ELECTRIC power systems, DATA analysis
Abstract

A simplified voltage stability analysis method is to use a static Thévenin equivalent to represent the electrical connection to a load center. Assuming fixed values of the Thévenin voltage and reactance, a power-voltage ( $PV$ ) curve analysis can be performed to find the voltage collapse point and stability margin. This paper proposes a method to compute the static Thévenin equivalent voltage and reactance of a power system using measured data. The method is validated with simulated PMU data and with 24-hour SCADA data at a wind hub on a medium voltage transmission system in the US western system. For the wind hub, the Thévenin equivalent parameters are used to compute the maximum power transfer capability of the wind hub as constrained by voltage stability. Then the method is extended to online application by using short data windows and forgetting factors. [ABSTRACT FROM AUTHOR]

Published
2018
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2. A Dispatch Strategy for a Unified Power-Flow Controller to Maximize Voltage-Stability-Limited Power Transfer.

Author

Wei, Xuan, Chow, Joe H., Fardanesh, B., and Edris, Abdel-Aty

Subjects
*SHUNT electric reactors, *ALGORITHMS, *CASCADE converters, *MATHEMATICAL optimization, *ELECTRIC circuits, *ELECTRIC lines
Abstract

For a system with a unified power-flow controller (UPFC), maximum power transfer capability is often achieved when the UPFC is operated at its rated capacity and conventional voltage and line-flow setpoint regulation is no longer possible. This paper uses injected voltage sources to directly model a UPFC and impose the rating limits in a Newton-Raphson load-flow algorithm. A dispatch strategy is proposed for a UPFC operating., at rated capacity in which the power circulation between the shunt and series converters is used as the parameter to optimize the power transfer. Voltage-stability curves for two test systems are shown to illustrate the effectiveness of this proposed strategy. [ABSTRACT FROM AUTHOR]

Published
2005
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