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Wide-Area Measurement-Based Power System Control Design

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3 Author(s)

This chapter describes a method for tuning of power system stabilizer (PSS) based on wide-area phasor measurements. Some numerical analyses demonstrate the effectiveness of the method by using phasor dynamical data obtained by a power system simulation package. Many approaches for the measurement-based controller design have been investigated in the literatures. The chapter presents the concept of damping controller design based on the wide-area phasor measurements. It considers a coupled vibration model to represent the interaction of two modes. These modes are assumed to oscillate with keeping the dynamics of power swing equations. The low-order system model, which holds the characteristics of the interarea oscillation mode and the control effect, is identified by monitoring data from wide-area phasor measurements. The effectiveness of the proposed method has been demonstrated through the power system simulation. The results show that an appropriate controller can be designed by using the identified low-order model.