Toshiba GR-200 Series Instruction Manual page 320

Impedance setting using matrix components
(ii)
With regard to Figure 2.26-1, when the voltage and current on a transmission line can
be expressed using matrix components, the user can select the following matrix setting:
where,
Z aa : Phase-'a' self-impedance on line GH (=Z bb =Z cc )
Z ab : Mutual-impedances between phase-'a' and phase-'b' on line GH (=Z bc =Z ca )
Selection of matrix setting mode
Prior to applying the matrix settings, the user should set the scheme switch
[FL_ImpSet] Matrix.
Z + Z
aa bb
− Z
2
K =
ab
Z
1
Z + Z
bb cc
− Z
2
K =
bc
Z
1
Z + Z
cc aa
− Z
2
K =
ca
Z
1
Z + Z
ab
Z −
aa
2
K =
a
Z
1
Z + Z
bc
Z −
bb
2
K =
b
Z
1
Z + Z
ca
Z −
cc
2
K =
c
Z
1
V Z Z Z
a aa ab
V Z Z Z
[ ] = [
b ba bb
V Z Z Z
c ca cb
- 301 -
ab
bc
ca
ca
ab
bc
I
ac a
I
] [ ]
bc b
I
cc c
6F2T0200 (0.15)
(2.26-12)
(2.26-13)
(2.26-14)
(2.26-15)
(2.26-16)
(2.26-17)
(2.26-18)
GRE200 (1,2)