Fault Recorder, Power Quality Recorder and Phasor Measurement Unit
The experience with disturbance recording systems has shown already how valuable this information is in order to allow for a better understanding of the steady-state and dynamic behavior of the system. The complexity of electrical power systems has increased and in the actual interconnected power system influences an wide area monitoring has also become essential. Therefore, disturbance recording and wide area monitoring is about the understanding what is going on with power system considering the wide grid circumstances, where fault location, protection behavior and system stability, through phasors measurement monitoring are analyzed. Fault recorders and phasor measurement units (PMU) are devices used for this discipline.