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The new P847 Phasor Measurement Unit forms part of Alstom Grid's system monitoring and control. The devices is used to measure power system data in real time and report to the PDC (Phasor Data Concentrator) for visualisation, data storage and most importantly for running a variety of ‘on line’ and ‘off line’ applications in systems analysis and control. The ultimate goal is to run the system economically and preserve system stability following major disturbances. The list of applications based on P847 PMU is long. Listed here are just a few of the possible applications of the P847 by system operators:
- Monitoring angular instability
- Monitoring frequency/rate of change of frequency
- Monitoring for impending voltage instability
- State estimation (based on time-synchronised, measured data)
- Detecting inter-area oscillations and system dumping factors
- Islanding
- System recording/analysis
- System restoration
- Adaptive protection
