Hitachi Relion 670 Series Commissioning Manual page 100
Line distance protection
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Also See for Relion 670 Series:
- Applications manual (438 pages) ,
- Commissioning manual (242 pages) ,
- Product manual (192 pages)
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Section 11
Testing functionality by secondary injection
Table 22:
Test point
1
2
3
4
5
6
7
8
9
10
11
12
13
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
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 table 21.
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 to find the operating value for the phase-to-ground fault C-E according to figure
24
94
Test points for phase-to-earth L3-E (Ohm/Loop)
Reach
Value
X
(2 x X1
+X0
set
R
0
X
(2 x X1
+ X0
set
R
(2 x R1
+ R0
set
X
0.8 x (2 x X1
R
0.8 x (2 x R1
X
0.5 x (2 x X1
R
0.5 x (2 x R1
X
RFPE
x tan(LdAngle)
set
R
RFPE
X
RLdFw x tan(LdAngle)
R
RLdFw
X
0
R
RLdFw
set
X
–0.8 x RLdFw x tan(AngDir)
R
0.8 x RLdFw
X
–0.4 x RLdFw x tan(AngDir)
R
0.4 x RLdFw
X
0.5 x (2 x X1
R
0.5 x (2 x X1
tan(AngNegRes))
X
0.8 x (2 x X1
R
0.8 x (2 x X1
tan(AngNegRes))
X
0.5 x (2 x X1
R
0.5 x (2 x R1
X
0
R
RFPE
and table 22.
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Comments
)/3
set
)/3
set
)/3
set
+ X0
)/3
set
set
+ R0
)/3 +RFPE
set
set
set
+ R0
)/3
set
set
+ R0
)/3 + RFPE
set
set
+ X0
)/3
set
set
+ X0
)/ (3 x
set
set
+X0
)/3
set
set
+ X0
)/ (3 x
set
set
+ X0
)/3
set
set
+ R0
)/3
set
set
Only used when RLdFw > RFPE
1MRK506371-UUS Rev. M
M14944-126 v8
23
and table 21. Compare
Line distance protection REL670
Commissioning manual
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