Hitachi Relion 670 Series Commissioning Manual page 142

Section 11
Testing functionality by secondary injection
V
=
ts
EQUATION14063 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
Expected result: start of the protection function and trip in zone 2, when trip conditions are fulfilled.
11.4.12.3 Test of the boundary between zone 1 and zone 2, which is defined by the
parameter ReachZ1
The trajectory of the impedance traverses the lens characteristic in zone 2
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
=
ts
EQUATION14065 V1 EN-US
∠
V
ts
EQUATION14058 V1 EN-US
frequency of V
I
50 s
EQUATION14059 V1 EN-US
∠I
50s
136
V
VT s ,
0 9 . V 0 9 11931 .
× × = ×
t FwdZ
,
V
VT p ,
 
ForwardX
=  =
arctan arctan

 
ForwardR
= 50 Hz
ts
1
I
CTs
I 10459
= × = ×
50
9000
I
CTp
= 0º
= 50 Hz
50s
I 1
CTs
I 10459
= tf × = ×
I 9000
CTp
= 180º
= 49.5 Hz
tfs
V
VT s ,
1 1 . 1 1 1435 .
V
× × = ×
t RZ , 1
V
,
VT p
 
ForwardX
=  =
arctan  arctan
 
ForwardR
= 50 Hz
ts
I 1
CTs
I 10459
= × = ×
50
I 9000
CTp
= 0º
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0 1 .
77 81 . V
× =
13 8 .
 
59 33 .
 =
82. . 14°

 
8 19 .
= . 1 162 A
1 162 . A
=
0 1 .
11 44 .
V
× =
13 8 .
 
59 33 .
 =
 82. . 14°
 
8 19 .
= . 1 162 A
1MRK506371-UUS Rev. M
(Equation 33)
(Equation 34)
(Equation 35)
(Equation 36)
GUID-BE180E07-7D4B-4842-81FB-244DE8897430 v1
GUID-17F6AC8D-1F57-4245-A61D-776D469DD153 v1
GUID-3D42E43D-873E-4271-9AAF-3B2789FF3B17 v1
(Equation 37)
(Equation 38)
(Equation 39)
Line distance protection REL670
Commissioning manual