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Table 2 Decoupled parameters of each sequence impedance and admittance

From: Fault location of untransposed double-circuit transmission lines based on an improved Karrenbauer matrix and the QPSO algorithm

Line parameters

Identical α sequence components (Ω)

Identical β sequence components (Ω)

Identical 0 sequence components (Ω)

Inverse α sequence components (Ω)

Inverse β sequence components (Ω)

Inverse 0 sequence components (Ω)

Impedance (\({10}^{ - 2}\))

0.2665 + j2.5809

9.6843 + j30.599

0.4118 + 3.2193j

− 0.7019 + 1.4024j

− 1.8141 + 3.7724j

0.4123 + 2.9974j

Admittance (\({10}^{ - 5}\))

0.0177 + j4.4509

0.0117 + j1.0028

0.0090 + 3.4694j

4.0357 + 6.1075j

1.6139 + 2.4050j

0.0090 + 3.7764j