V. THE IEEE C37.118 STANDARD
The IEEE C37.118 standard [5] is currently the only
standard world-wide for measuring synchrophasors in
electrical energy systems. Throughout the following text, it
will be commonly referred as "the standard".
Basically, it defines the following:
• Time reference: UTC
• Rate of measurement
• Phase reference: co-sine
• Accuracy metrics: TVE (Total Vector Error)
• Communication model (format of telegrams)
The standard does not specify:
• Speed of measurement
• Accuracy under transient conditions
• Hardware / Software of the devices
• Measurement algorithms
The specifications allow a simple processing of the
synchrophasors from different measuring systems, in real-time
as well as off-line.