2.2 ACCURACY LIMITS
The Total Vector Error defined through
Represents the magnitude of the error vector, obtained by subtracting the measured synchrophasor of the
theoretical value. It is represented as a fraction of the magnitude of the theoretical value.
In the equation above,
and
are the measured values, while
and
are the theoretical values
of the input signal at the instant of measurement.
Considering acquisition modules appropriate for PMU measurement, the unit is rated as level 1 compliant
according to IEEE C37.118 under the condition below.
Out-of-band interfering signal ³
¹ Any harmonic up to 50
order
² Of input signal magnitude
³
frequency of interfering signal,
nominal frequency and
synchrophasors broadcast frequency
2.3 COMMUNICATION PORTS, TRANSMISSION RATES
Each stream of data is transmitted through a particular UDP/IP port listed in the table below:
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