Two Step Overvoltage Protection Ov2Ptov; Identification; Functionality Ov2Ptov - ABB REL650 Technical Manual

1MRK 506 382-UEN A
8.2
8.2.1
8.2.2
Line distance protection REL650 2.2 IEC
Technical manual
Function
Inverse time characteristics for step 1
and step 2, see table 683
Definite time delay, step 1 at 1.2 x U
0
Definite time delay, step 2 at 1.2 x U
0
Minimum operate time, inverse
characteristics
Operate time, start at 2 x U
set
Reset time, start at 0 to 2 x U
Operate time, start at 1.2 x U
Reset time, start at 0 to 1.2 x U
Critical impulse time
Impulse margin time

Two step overvoltage protection OV2PTOV

Identification

Function description
Two step overvoltage protection

Functionality OV2PTOV

Overvoltages may occur in the power system during abnormal conditions such as
sudden power loss, tap changer regulating failures, and open line ends on long
lines.
Two step overvoltage protection (OV2PTOV) function can be used to detect open
line ends, normally then combined with a directional reactive over-power function
to supervise the system voltage. When triggered, the function will cause an alarm,
switch in reactors, or switch out capacitor banks.
OV2PTOV has two voltage steps, each of them with inverse or definite time
delayed.
Range or value
-
to (0.00-6000.00) s
set
to (0.000-60.000) s
set
(0.000–60.000) s
to 0 Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
set
Max. = 30 ms
to 0 Min. = 5 ms
set
Max. = 25 ms
Min. = 15 ms
set
Max. = 35 ms
5 ms typically at 1.2 x U
15 ms typically
IEC 61850
identification
OV2PTOV
Section 8
Voltage protection
Accuracy
See table 683
±0.2% or ±40ms
whichever is greater
±0.2% or ±40ms
whichever is greater
±0.5% or ±40ms
whichever is greater
-
-
-
-
to 0 -
set
-
IEC 60617 identification ANSI/IEEE C37.2
device number
59
3U>
SYMBOL-C-2U-SMALLER-THAN V2 EN-US
IP14545-1 v3
M17002-1 v8
M13798-3 v15
273