ABB REG670 Commissioning Manual page 170

Section 13
Testing functionality by secondary injection
164
Expected result: start of the protection function and trip in zone 1 when trip
conditions are fulfilled.
The trajectory of the impedance does not enter the lens characteristic
Preliminary steady state test at 50 Hz
• Go to Main menu/Test/Function status/Impedance protection/
OutOfStep(78,Ucos)/OOSPPAM(78,Ucos):1/Outputs to check the available
service values of the function block OOSPPAM.
• Apply the following three-phase symmetrical quantities (the phase angle is
related to phase L1):
V
VT s ,
V 1 1 . V
= × ×
ts t RvsZ ,
V
VT p ,
EQUATION14069 V1 EN-US
æ
ReverseX
Ð = ç
V arctan
è
ts
ReverseR
EQUATION14068 V1 EN-US
frequency of V = 50 Hz
ts
I
CTs
I I 10459
= × =
50 s 50
I
CTp
EQUATION14059 V1 EN-US
∠I
= 0º
50s
frequency of I = 50 Hz
50s
I
CTs
It I 10459
= × =
tf
fs
I
CTp
EQUATION14062 V1 EN-US
∠I
= 0º
tfs
frequency of I = 50 Hz
tf
• Check that the service values (VOLTAGE, CURRENT, R(%), X(%)) are
according to the injected quantities and that ROTORANG is close to 0 rad. For
this particular injection the service values are:
• VOLTAGE= 6.49 kV
• CURRENT= 20918 A
• R= –0.32%
• X=–32.57%
• ROTORANG= 0.08 rad
Note that these values identify a point outside the lens characteristic, even if it
is close to the point SE. Neither START nor TRIP is issued.
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
0 1 .
1 1 5899 . 47 02 .
= × × =
13 8 .
ö æ
29.60
÷ - ° = ç
180 arctan
ø è
0.29
1
= . 1 162 A
×
9000
1
1 162 . A
× =
9000
1MRK 502 073-UEN A
GUID-189FECED-12A7-4A41-BCCF-D93C0FF9FA41 v1
GUID-448D5357-6CC2-438E-83CA-25FD381B7DFF v1
V
ö
÷ - ° = - °
180 90.56
ø
Commissioning manual
(Equation 67)
(Equation 68)
(Equation 69)
(Equation 70)