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1MRK 506 355-UEN A
10.4.12.4
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
I
= 0 A
tfs
•
State 2: main test step.
Define the following three-phase symmetrical quantities (the phase angle is
related to phase L1):
V
VT s
,
V
0 9
.
V
=
×
×
ts
t RZ
,
1
V
VT p
,
EQUATION14066 V1 EN
ForwardX
∠
=
V
arctan
ts
ForwardR
EQUATION14058 V1 EN
frequency of V
= 50 Hz
ts
I
CTs
I
I
10459
=
×
=
50
s
50
I
CTp
EQUATION14059 V1 EN
∠I
= 0º
50s
frequency of I
= 50 Hz
50s
I
CTs
10459
It
I
=
×
=
tf
fs
I
CTp
EQUATION14062 V1 EN
∠I
= 180º
tfs
frequency of I
= 49.5 Hz
tfs
Expected result: start of the protection function and trip in zone 1 when trip
conditions are fulfilled.
Test of the point SE (R
The trajectory of the impedance traverses the lens characteristic in
zone 1
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
,
0 9
.
V
V
=
×
×
ts
t RvsZ
,
V
,
VT p
EQUATION14067 V1 EN
0 1
.
0 9 1435
.
9 36
.
V
=
×
×
=
13 8
.
59 33
.
=
=
arctan
82. . 14°
8 19
.
1
= .
1 162
A
×
9000
1
1 162
.
A
×
=
9000
, X
)
RvsR
RvsX
0 1
.
0 9 5899
.
38 47
.
=
×
×
=
13 8
.
Section 10
V
(Equation 53)
(Equation 54)
(Equation 55)
(Equation 56)
(Equation 57)
137
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