Hitachi Relion 670 Series Commissioning Manual page 143

1MRK506371-UUS Rev. M
frequency of I
It
fs
EQUATION14062 V1 EN-US
∠I
tfs
frequency of I
• 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:
•
•
•
•
•
Note that these values identify a point inside the lens characteristic, in the Zone 2, 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 that is far away from the lens characteristic. Define the following three-phase symmetrical
quantities (the phase angle is related to phase L1):
V
=
ts
EQUATION14065 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
EQUATION14065 V1 EN-US
∠
V
ts
EQUATION14058 V1 EN-US
frequency of V
Line distance protection REL670
Commissioning manual
= 50 Hz
50s
I 1
CTs
I 10459
= tf × = ×
I 9000
CTp
= 0º
= 50 Hz
tfs
VOLTAGE = 1.58 kV
CURRENT = 20918 A
R = 1.08%
X = 7.85%
ROTORANG = -3.04 rad
V
,
VT s
1 1 . 1 1 1435 .
V
× × = ×
, 1
t RZ
V
VT p ,
 
ForwardX
=  =
arctan arctan

 
ForwardR
= 50 Hz.
t
= 0 A
V
VT s ,
1 1 . 1 1 1435 .
V
× × = ×
, 1
t RZ
V
VT p ,
 
ForwardX
=  =
arctan arctan

 
ForwardR
= 50 Hz
t
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1 162 . A
=
0 1 .
11 44 .
V
× =
13 8 .
 
59 33 .
 =
82. . 14°

 
8 19 .
0 1 .
11 44 .
V
× =
13 8 .
 
59 33 .
 =
82. . 14°

 
8 19 .
Section 11
Testing functionality by secondary injection
(Equation 40)
GUID-53964189-42E4-4C4B-BFCD-64888BA938EF v1
(Equation 41)
(Equation 42)
(Equation 43)
(Equation 44)
137