Siemens 6MD85, Manual

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[dwklatve-120124-01.tif, 1, en_US]
Figure 9-6 Representation of the Total Vector Error
The TVE is defined as follows:
[fo_utcphi-111011-01.tif, 1, --_--]
where:
•
X
r(n)
= Real part of measured signal
•
X
i(n)
= Imaginary part of measured signal
•
X
r
= Real part of input signal
•
X
i
= Imaginary part of input signal
Variables that influence the TVE are:
•
Amplitude errors
•
Phase errors
•
Synchronization accuracy (deviation from the UTC)
Synchronization accuracy is affected by a GPS timer and the precise correction of the time delay within the
GPS receiver module, as well as by the optimal setup of the GPS antenna.
Measured Values, Energy Values, and Supervision of the Primary System
9.5 Phasor Measurement Unit (PMU)
1004 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017