Setting Guidelines - ABB RES670 Applications Manual

Section 8
Current protection
8.6.3
162
(reference angle set to 180) to trip if the power flow from the network to the
generator is higher than 1%.
Underpower protection
Q
Operate
Line
Margin
P
Operating point
without
turbine torque
IEC09000019 V2 EN-US
Figure 65: Reverse power protection with underpower or overpower
protection

Setting guidelines

GlobalBaseSel: Selects the global base value group used by the function to define
IBase, UBase and SBase as applicable.
Operation: With the parameter Operation the function can be set On/Off.
Mode: The voltage and current used for the power measurement. The setting
possibilities are shown in table 18.
Table 18: Complex power calculation
Mode
Set value
L1, L2, L3
Arone
PosSeq
L1L2
L2L3
Table continues on next page
Overpower protection
Q
Operate
Line
Margin
Operating point
without
turbine torque
IEC09000019-2-en.vsd
Formula used for complex power calculation
=
S U
L
EQUATION1697 V1 EN-US
=
S U
L L
EQUATION1698 V1 EN-US
= ×
S 3 U
EQUATION1699 V1 EN-US
=
S U
L L
EQUATION1700 V1 EN-US
=
S U
L L
EQUATION1701 V1 EN-US
1MRK 511 407-UEN C
P
* *
× + × + ×
I U I U I
1 L 1 L 2 L 2 L 3
* *
× - ×
I U I
1 2 L 1 L L 2 3 L 3
*
×
I
PosSeq PosSeq
* *
× -
( I I )
1 2 L 1 L 2
* *
× -
( I I )
2 3 L 2 L 3
Phasor measurement unit RES670 2.2 IEC
Application manual
SEMOD172134-4 v7
*
L 3
(Equation 56)
(Equation 57)
(Equation 58)
(Equation 59)
(Equation 60)