V
V
V
V
V
ts
t RvsZ
VT s
VT p
=
×
×
=
×
×
=
0 9
0 9 5899
0 1
13 8
38 47
.
.
.
.
.
,
,
,
EQUATION14067 V1 EN-US
(Equation 57)
29.60
arctan
180
arctan
180
90.56
0.29
ts
ReverseX
V
ReverseR
Ð
=
-
° =
-
° = -
°
æ
ö
æ
ö
ç
÷
ç
÷
è
ø
è
ø
EQUATION14068 V1 EN-US
(Equation 58)
frequency of V
ts
= 50 Hz
I
I
I
I
A
s
CTs
CTp
50
50
10459
1
9000
1 162
=
×
=
×
=
.
EQUATION14059 V1 EN-US
(Equation 59)
∠
I
50s
= 0º
frequency of
I
50s
= 50 Hz
It
I
I
I
A
fs
CTs
CTp
tf
=
×
=
×
=
10459
1
9000
1 162
.
EQUATION14062 V1 EN-US
(Equation 60)
∠
I
tfs
= 0º
frequency of
I
tf
= 50 Hz
•
Check that the service values (VOLTAGE, CURRENT, R(%), X(%)) are according to the
injected quantities and that ROTORANG is close to 3.14 rad. For this particular injection
the service values are:
•
VOLTAGE = 5.31 kV
•
CURRENT = 20918 A
•
R = -0.26%
•
X = -26.65%
•
ROTORANG = -3.06 rad
Note that these values identify a point inside the lens characteristic in zone 1 that is close
to the point SE. The START is issued, but no TRIP is performed.
Execution of the dynamic test
GUID-FF6DCD5B-96AA-4255-8740-B85C8C7148F5 v1
The test may be performed by using two states of a sequence tool that is a basic feature of
test sets.
•
State 1: pre-test condition.
Steady voltage and current are applied in order to get a steady high impedance, that is a
point in the plane R-X which is far away from the lens characteristic. Define the following
three-phase symmetrical quantities (the phase angle is related to phase L1):
V
V
V
V
V
ts
t RvsZ
VT s
VT p
=
×
×
=
×
×
=
0 9
0 9 5899
0 1
13 8
38 47
.
.
.
.
.
,
,
,
EQUATION14067 V1 EN-US
(Equation 61)
29.60
arctan
180
arctan
180
90.56
0.29
ts
ReverseX
V
ReverseR
Ð
=
-
° =
-
° = -
°
æ
ö
æ
ö
ç
÷
ç
÷
è
ø
è
ø
EQUATION14068 V1 EN-US
(Equation 62)
frequency of V
ts
= 50 Hz
I
50s
= 0 A
I
tfs
= 0 A
1MRK 502 067-UEN B
Section 12
Testing functionality by secondary injection
143
Commissioning manual
