Induced voltage at two poles of 10kV parallel distribution line caused by direct lightning strike on the phase wire of adjacent line

Triggered lightning was used to strike different phase wires of a 10 kV double circuit distribution line in 2018. The induced voltage on two poles of the other circuit is analyzed. When it struck on phase A, for the pole close to the strike point, the induced voltage of the lowest phase C is different from that of the two phases, with three obvious negative pulses and one prominent positive pulse. The negative peak of three-phase overvoltage ranges from -11.7 kV to -65.2 kV corresponding to lightning current from -8.3 kA to -18.1 kA. For the three-phase voltage on the pole far away from the strike point, its negative peak is between -10.5 kV and -42.8 kV corresponding to lightning current from -8.3 kA to -26.7 kA. The test method and results proposed in this paper will be helpful to the research on the lightning overvoltage response of parallel power distribution lines.