Table of Contents
Advertisement
1MRK 506 355-UEN A
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
frequency of V
= 50 Hz
ts
I
= 0 A
50s
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
1 1
.
V
V
=
×
×
,
ts
t RvsZ
V
VT p
,
EQUATION14069 V1 EN
æ
ReverseX
Ð
=
ç
V
arctan
è
ts
ReverseR
EQUATION14068 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
= 50.5 Hz
tfs
Expected result: the protection function does not issue either start or trip.
After each test it is possible to download and study the related disturbance recording.
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
Section 10
V
ö
-
° = -
°
÷
180
90.56
ø
(Equation 73)
(Equation 74)
(Equation 75)
(Equation 76)
141
Advertisement
Table of Contents
