Toshiba GR200 Series - (iii)-1 Impedance setting in Matrix components; (iii)-2 Impedance setting in Symmetrical components

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 399 -
Impedance setting in Matrix components
Matrix setting is required to set numerical values for both self-impedance (Z
aa
, Z
bb
and Z
cc
)
and mutual-impedance (Z
ab
, Z
bc
and Z
ca
).
As shown in Figure 2.32-8, when we consider the three-terminal application, user should
key values for each Line_Element. When we consider the two-terminal application, as shown
in Figure 2.32-1, user just keys values for Line1_Element setting.
⚫ Setting for Line GJ (Line1_Element)
For instance, consider setting impedance values with respect to the local line (line GJ) in
Figure 2.32-8, setting targets are represented as the Line1_Element. The self-impedances are
one of the subjects in the matrix setting; hence, user should set the self-impedance values for
setting items—that are designated [FL_1Raa] to [FL_1Rcc] and [FL_1Xaa] to [FL_1Xcc].
Likewise, the mutual-impedances values are set for the settings [FL_1Rab] to [FL_1Rca] and
[FL_1Xab] to [FL_1Xca].
⚫ Setting for Line JH (Line2_Element)
On the other hand, considering setting impedance value of line JH, setting targets are
represented as the Line2_Element. In a manner similar to that of Setting of Line GJ, user
should set the self-impedance values for setting items—that are designated [FL_2Raa] to
[FL_2Rcc] and [FL_2Xaa] to [FL_2Xcc]. Likewise, the mutual-impedances values are set for
the settings [FL_2Rab] to [FL_2Rca] and [FL_2Xab] to [FL_2Xca].
⚫ Setting for Line JS (Line3_Element)
For impedance values of line JH, setting targets are represented as the Line3_Element. In a
manner similar to that of Setting of Line GJ, user should set the self-impedance values for
setting items—that are designated [FL_3Raa] to [FL_3Rcc] and [FL_3Xaa] to [FL_3Xcc].
Likewise, the mutual-impedances values are set for the settings [FL_3Rab] to [FL_3Rca] and
[FL_3Xab] to [FL_3Xca].
Impedance setting in Symmetrical components
Symmetrical setting is available when each self-impedance is identical to the other
(Z
aa
=Z
bb
=Z
cc
) and each mutual-impedance is identical to the other (Z
ab
=Z
bc
=Z
ca
); and then,
set Symmetrical for the scheme switch [FL_ImpSet]. The method of how to obtain the
symmetrical values is discussed earlier with Equations (2.32-10) to (2.32-12).
⚫ Impedance for Line GJ (Line1_Element setting)