Power System Control: Fundamentals and New Perspectives

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3 Author(s)

This chapter provides an introduction on the general aspects of power system stability and control. Power system controls attempt to return the system from an off-normal operating state to a normal operating state. Fundamental concepts and definitions of angle, voltage and frequency stability, and existing controls are emphasized in the chapter. Angles of nodal voltages, nodal voltage magnitudes, and network frequency are three important quantities for power system operation and control. The chapter discusses angle and voltage stability, which can be divided into small- and large-disturbance stability. The timescales and characteristics of various power system controls are described in the chapter. The supervisory control and data acquisition (SCADA) together with security control, automatic generation control (AGC), and load management are the major units in the application layer of a modern (EMS). The chapter also presents some challenges and new research directions.