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In the relay, the voltage is compensated independently for resistance and reactance
components as shown in equation (2.10-33) instead of equation (2.10-32).
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where,
Kxs: compensation factor (Kxs = X0/X1 × 100)
Krs: compensation factor (Krs = R0/R1 × 100)
Kxm: compensation factor (Kxm = Xom/X1 × 100)
Krm: compensation factor (Krm = Rom/R1 × 100)
X: imaginary part of the measured impedance
R: real part of the measured impedance
VaX: imaginary part of phase “a” voltage
VaR: real part of phase “a” voltage
IaX: imaginary part of phase “a” current
IaR: real part of phase “a” current
I
0X
: imaginary part of zero-sequence current of the protected line
I
0R
: real part of zero-sequence current of the protected line
I
omX
: imaginary part of zero-sequence current of the adjacent line
I
omR
: real part of zero-sequence current of the adjacent line
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