ABB REG670 Commissioning Manual page 181

1MRK 502 073-UUS A
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
∠I
= 0º
50s
frequency of I = 50 Hz
50s
I
It I CTs
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 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
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
VT s ,
V 0 9 . V
= × ×
ts t RvsZ ,
V
VT p ,
EQUATION14067 V1 EN-US
æ
ReverseX
Ð = ç
V arctan
è
ts
ReverseR
EQUATION14068 V1 EN-US
frequency of V = 50 Hz
ts
I = 0 A
50s
I = 0 A
tfs
• State 2: main test step.
Testing functionality by secondary injection
1
A
1 162 .
× =
9000
0 1 .
0 9 5899 . 38 47 .
= × × =
13 8 .
ö æ
29.60
÷ - ° = ç
180 arctan
ø è
0.29
Section 13
GUID-FF6DCD5B-96AA-4255-8740-B85C8C7148F5 v1
V
ö
÷ - ° = - °
180 90.56
ø
(Equation 60)
(Equation 61)
(Equation 62)
175