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Table 3 Actual vs. Estimated Thevenin impedances at Terminal G for the three-terminal line test scenario

From: Estimating zero-sequence impedance of three-terminal transmission line and Thevenin impedance using relay measurement data

 

Source impedance (Ω)

Magnitude error (%)

Phase angle error (degrees)

 

Actual

Estimated

  

Z G1

3.75 ∠86°

3.78 ∠89.2°

0.80

3.2

Z G2

3.75 ∠86°

3.75 ∠86°

0.00

0.00

Z G0

11.25 ∠86°

11.25 ∠86°

0.00

0.00