Hitachi Relion 670 Series Commissioning Manual page 145

1MRK506371-UUS Rev. M
•
•
•
•
•
Note that these values identify a point inside the lens characteristic in zone 1, that is close to the
boundary between zone 1 and zone 2. 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
=
ts
EQUATION14066 V1 EN-US
∠
V
ts
EQUATION14058 V1 EN-US
frequency of V
I
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
=
ts
EQUATION14066 V1 EN-US
∠
V
ts
EQUATION14058 V1 EN-US
frequency of V
I
50 s
EQUATION14059 V1 EN-US
∠I
50s
frequency of I
It
fs
EQUATION14062 V1 EN-US
∠I
tfs
frequency of I
Line distance protection REL670
Commissioning manual
VOLTAGE = 1.29 kV
CURRENT = 20918 A
R = 0.89%
X=6.42%
ROTORANG = -3.04 rad
V
VT s ,
0 9 . 0 9 1435 .
V
× × = ×
, 1
t RZ
V
VT p ,
 
ForwardX
=  =
arctan arctan

 
ForwardR
= 50 Hz
ts
= 0 A
V
VT s ,
0 9 . V 0 9 1435 .
× × = ×
t RZ , 1
V
VT p ,
 
ForwardX
=  =
arctan arctan

 
ForwardR
= 50 Hz
ts
1
I
CTs 10459
I
= × = ×
50
I 9000
CTp
= 0º
= 50 Hz
50s
I 1
CTs
I 10459
= × = ×
tf
9000
I
CTp
= 180º
= 49.5 Hz
tfs
© 2017 - 2023 Hitachi Energy. All rights reserved
0 1 .
9 36 .
V
× =
13 8 .
 
59 33 .
 =
82. . 14°

 
8 19 .
0 1 .
9 36 . V
× =
13 8 .
 
59 33 .
 =
82. . 14°

 
8 19 .
= . 1 162
A
1 162 . A
=
Section 11
Testing functionality by secondary injection
GUID-98707DB3-9A1A-4458-9704-25F8FCB94B79 v1
(Equation 51)
(Equation 52)
(Equation 53)
(Equation 54)
(Equation 55)
(Equation 56)
139