Wide-Area Monitoring and Control Using PMUs for Power System Stabilit

Traditional power system security assessment methods, primarily based on SCADA data and offline studies conducted well in advance of real-time operations, are increasingly inadequate for modern grid requirements, as they fail to accurately anticipate the diverse and dynamic conditions encountered by system operators. To address these limitations, advanced technologies such as Phasor Measurement Units (PMUs), which utilize synchrophasor measurements, enable precise, high-resolution, and real-time monitoring of actual system states. These technologies support enhanced operational awareness by facilitating continuous monitoring, real-time assessment, and automated control actions to prevent or mitigate system disturbances. PMU-based applications provide operators with critical tools to detect and avoid voltage and dynamic instability, as well as to monitor generator responses during significant frequency deviations. This paper highlights the benefits of PMU deployment in selected real-time applications, reviews ongoing pilot projects and global implementation experiences, and proposes both short-term and long-term roadmaps for the future development and integration of synchrophasor-based systems..