Global positioning system (GPS) time-synchronized phasor measurement units (PMUs) were introduced in the 1980s and have been gradually deployed throughout the electric power system. At present, almost all the major countries in the world have ambitious PMU deployment plans. The applications of a PMU-based wide-area monitoring system (WAMS) in electric transmission grid management have attracted continuous interest as a result. In this chapter, after a brief introduction of its principles and development history, the architecture of WAMS is introduced and its many applications in smart transmission are summarized. Furthermore, FNET/GridEye, which is a pioneering WAMS system, is also introduced in this chapter as an example of WAMS.

Chapter Contents:

• 5.1 Introduction
• 5.2 Architecture of WAMS
• 5.2.1 PMU installation
• 5.2.2 Synchrophasor data management
• 5.2.3 Synchrophasor standards
• 5.3 Synchrophasor applications
• 5.4 Case study - FNET/GridEye
• 5.4.1 Sensor design
• 5.4.2 Server framework
• 5.4.3 Real-time applications
• 5.4.3.1 Real-time visualization of measurement data
• 5.4.3.2 Disturbance recognition and location
• 5.4.3.3 Inter-area oscillation detection and modal analysis
• 5.4.3.4 Ambient data-based oscillation mode frequency and damping ratio estimation
• 5.4.3.5 Islanding and off-grid detection
• 5.4.3.6 Measurement-based model construction
• 5.4.4 Non-real-time applications
• 5.4.4.1 Event replay and post-event analysis
• 5.4.4.2 Measurement-aided model validation
• 5.4.4.3 Electromechanical speed map development
• 5.4.4.4 Historic data statistical analysis
• 5.5 Conclusions
• References

Inspec keywords: power grids; phasor measurement; power transmission; power system management

Other keywords: wide-area monitoring system; FNET-GridEye; GPS PMUs; electric transmission grid management; smart transmission; Global Positioning System time-synchronized phasor measurement units; electric power system; WAMS system

Subjects: Power transmission, distribution and supply; Power system measurement and metering; Power system management, operation and economics