ABB Relion 670 Series REL670 - Measuring the Operating Limit of Set Values

Test point Reach Value Comments
4 X 0.5 x (2 x X1
set
+ R0
set
)/3
R 0.5 x (2 x R1
set
+R0
set
)/3 + RFPE
set
5 X 0.85 x RFPE
set
x tan(ArgLdset) ArgLd = angle for the maximal load
transfer.
R 0.85 x RFPE
6 X RLdFwset x tan(ArgLdSet)
R RLdFw
set
7 X 0
R RLdFw
set
8 X –02143 x RLdFw
set
Exact: 0.8 x RFPE x tan (ArgDir)
R 0.8 x RLdFw
set
9 X –0.8 x RLdFw
set
x tan(ArgDir)
R 0.8 x RLdFw
set
10 X 0.17 x (2 x X1
set
+ X0
set
) Exact: 0.5 x (2 x X1
set
X0
set
)/3
R -0.36 x (2 x X1
set
+ X0
set
) Exact: 0.5 x (2X1
set
+ X0
set
)/(3 x
tan(AgNegDir90)
11 X 0.27 x (2 x X1
set
+X0
set
) Exact: 0.8 x (2 x X1
set
+ X0
set
)/3
R –0.57 x (2 x X1
set
+ X0
set
) Exact: 0.8 x (2X1set + X0set)/(3 x
tan(AngNegDir 90))
12 X 0.5 x (2 x X1
set
+ X0
set
)/3
R 0.5 x (2 x R1
set
+ R0
set
)/3
13 X 0
R RFPE
10.4.5.1 Measuring the operating limit of set values
Procedure:
1. Subject the IED to healthy normal load conditions for at least two seconds.
2. Apply the fault condition and slowly decrease the measured impedance to find
the operating value of the phase-to-phase fault for zone 1 according to test point
1 in figure
20 and table 23. Compare the result of the measurement with the set
value.
3. Repeat steps 1 to 2 to find the operating value for test points 2, 3 in table23.
Observe that the zones that are not tested have to be blocked and the zone that is
tested has to be released.
4. Repeat steps 1 to 3 above to find the operating value for the phase-to-earth fault
L3-E according to figure 21 and table 24.
Test points 8, 9, 10 and 11 are intended to test the directional
lines of impedance protection. Since directionality is a common
function for all 5 measuring zones, it is only necessary to test
1MRK 506 355-UEN A Section 10
Testing functionality by secondary injection
Line distance protection REL670 2.1 IEC 103
Commissioning manual