Survey on power system stabilizers control and their prospective applications for power system damping using Synchrophasor-based wide-area systems

摘要

Power system oscillation damping remains as one of the major concerns for secure and reliable operation ofnlarge power systems, and is of great current interest to both industry and academia. The principal reason fornthis is that the inception of poorly-damped low-frequency inter-area oscillations (LFIOs) when powernsystems are operating under stringent conditions may lead to system-wide breakups or considerably reducenthe power transfers over critical corridors. With the availability of high-sampling rate phasor measurementnunits (PMUs), there is an increasing interest for effectively exploiting conventional damping control devices,nsuch as power system stabilizers (PSSs), by using these measurements as control input signals. In this paper,nwe provide a comprehensive overview of distinct elements (or ‘‘building blocks’’) necessary for wide-areanpower system damping using synchrophasors and PSSs. These building blocks together shape a tentativenmethodical framework, and are disposed as follows: (1) fundamental understanding of the main characteristicsnof inter-area oscillations, (2) wide-area measurement and control systems (WAMS andWACS) andnwide-area damping control (WADC), (3) advanced signal processing techniques for mode propertynidentification, (4) methods for model-based small-signal analysis, (5) control input signals selection,nand (6) methods for PSS control design. We also describe the latest developments in the implementationnof synchrophasor measurements inWAMS andWACS as well as their prospectives forWADC applications.nThis paper serves both to abridge the state-of-the-art in each of these elements, and to accentuate aspiringnideas in each building block. Copyright # 2011 John Wiley & Sons, Ltd.