ABB Relion 670 series - Test of the Boundary between Zone 1 and Zone 2, Which Is Defined by the Parameter Reachz1

V V
V
V
V
ts t FwdZ
VT s
VT p
= × × = × × =0 9 0 9 11931
0 1
13 8
77 81. .
.
.
.
,
,
,
EQUATION14063 V1 EN-US (Equation 37)
∠ =






=






=V
ForwardX
ForwardR
ts
arctan arctan
.
.
59 33
8 19
82..14°
EQUATION14058 V1 EN-US (Equation 38)
frequency of V
ts
= 50 Hz
I I
I
I
A
s
CTs
CTp
50 50
10459
1
9000
1 162= × = × = .
EQUATION14059 V1 EN-US (Equation 39)
∠I
50s
= 0º
frequency of I
50s
= 50 Hz
It I
I
I
A
fs
CTs
CTp
tf= × = × =10459
1
9000
1 162.
EQUATION14062 V1 EN-US (Equation 40)
∠I
tfs
= 180º
frequency of I
tfs
= 49.5 Hz
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
GUID-BE180E07-7D4B-4842-81FB-244DE8897430 v1
The trajectory of the impedance traverses the lens characteristic in zone 2
GUID-17F6AC8D-1F57-4245-A61D-776D469DD153 v1
Preliminary steady state test at 50 Hz
GUID-3D42E43D-873E-4271-9AAF-3B2789FF3B17 v1
• 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 V
V
V
V
ts t RZ
VT s
VT p
= × × = × × =1 1 1 1 1435
0 1
13 8
11 44
1
. .
.
.
.
,
,
,
EQUATION14065 V1 EN-US (Equation 41)
∠ =






=






=V
ForwardX
ForwardR
ts
arctan arctan
.
.
59 33
8 19
82..14°
EQUATION14058 V1 EN-US (Equation 42)
frequency of V
ts
= 50 Hz
I I
I
I
A
s
CTs
CTp
50 50
10459
1
9000
1 162= × = × = .
EQUATION14059 V1 EN-US
(Equation 43)
∠I
50s
= 0º
Section 11 1MRK 504 165-UUS Rev. J
Testing functionality by secondary injection
152 Transformer protection RET670
Commissioning manual
© 2017 - 2021 Hitachi Power Grids. All rights reserved