Test Of The Boundary Between Zone 1 And Zone 2, Which Is Defined By The Parameter Reachz1 - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
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
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
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
• 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.
146
= 49.5 Hz
tfs
ReachZ1
V
VT s ,
1 1 . 1 1 1435 .
V
= × × = ×
t RZ , 1
V
,
VT p
 
ForwardX
=  =
arctan

ts
 
ForwardR
= 50 Hz
ts
I 1
CTs
I 10459
= × = ×
50
I 9000
CTp
= 0º
= 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
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0 1 .
11 44 .
V
× =
13 8 .
 
59 33 .
 =
arctan 82. . 14°

 
8 19 .
= . 1 162 A
1 162 . A
=
1MRK 505 378-UEN Rev. H
GUID-BE180E07-7D4B-4842-81FB-244DE8897430 v1
GUID-17F6AC8D-1F57-4245-A61D-776D469DD153 v1
GUID-3D42E43D-873E-4271-9AAF-3B2789FF3B17 v1
(Equation 40)
(Equation 41)
(Equation 42)
(Equation 43)
GUID-53964189-42E4-4C4B-BFCD-64888BA938EF v1
Line differential protection RED670
Commissioning manual