Vector Shift Protection Vvsppam; Identification; Function Block; Functionality - ABB RELION REX640 Technical Manual

1MRS759142 C
4.5.9
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REX640
Technical Manual

Vector shift protection VVSPPAM

Identification

Function description
Voltage vector shift protection

Function block

GUID-2DB3A1C8-221E-4F02-983A-DD76BAB577DE V1 EN
Figure 449: Function block

Functionality

The voltage vector shift protection function VVSPPAM, also known as vector surge
or delta phi function, measures continuously the duration of a voltage cycle. At the
instance of islanding, the duration of measured voltage cycle becomes shorter or
longer than the previous one, that is, the measured voltage cycle shifts with time. This
shifting of voltage is measured in terms of phase angle. VVSPPAM issues an
instantaneous trip when the shift in voltage vector exceeds the set value.
VVSPPAM can be blocked with BLOCK input. Blocking resets timers and outputs.

Analog channel configuration

VVSPPAM has one analog group input which must be properly configured.
Table 784: Analog inputs
Input
U3P
See the preprocessing function blocks in this document for the
possible signal sources.
There are a few special conditions which must be noted with the configuration.
Table 785: Special conditions
Condition
U3P connected to real measurements
Protection functions
IEC 61850 IEC 60617
identification identification
VVSPPAM VS
Description
Three-phase voltages
Description
The function can work with any two voltage
channels connected but it is recommended to
connect all three voltage channels.
Section 4
ANSI/IEEE C37.2
device number
78VS
825