ABB RELION 620 Series Technical Manual page 700

Section 4
Protection functions
4.5.9.9
4.5.10
4.5.10.1
4.5.10.2
4.5.10.3
694
Technical data
Table 653: LVRTPTUV Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Operate time accuracy
Suppression of harmonics
1) Tested for Number of Start phases = 1 out of 3, results based on statistical distribution of 1000
measurements
2) Includes the delay of the signal output contact
Voltage vector shift protection VVSPPAM
Identification
Function description
Voltage vector shift protection
Function block
GUID-3D6DC3BD-5E54-4062-BCB9-4CA8E60B6623 V1 EN
Figure 353: 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.
The function can be blocked with BLOCK input. Blocking resets timers and outputs.
Value
Depending on the frequency of the measured
voltage:
f ±2 Hz
n
±1.5% of the set value or ±0.002 × U
Typically 40 ms
Based on maximum value of
setting
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
IEC 61850 IEC 60617
identification identification
VVSPPAM VS
1MRS757644 F
n
Recovery time
, where n = 2, 3, 4, 5,...
n
ANSI/IEEE C37.2
device number
78V
620 series
Technical Manual