Unified modeling method of same-tower multi-loop electric transmission line based on pole and tower structures and wire parameters

The invention discloses a unified modeling method of a same-tower multi-loop electric transmission line based on pole and tower structures and wire parameters. The method includes the steps of collecting required basic information in the modeling process, calculating an impedance/admittance matrix of the corresponding unit length of each pole and tower structure after ground electrode influences are eliminated, and conducting replacing operation on the impedance/admittance matrixes for the pole and tower structure for erecting a different-wire same-tower multi-loop part to obtain a corresponding impedance/admittance matrix. On the basis, positive sequence impedance and zero sequence impedance of each loop are calculated and compared with the measured value corresponding to the loop, and soil resistance is adjusted according error magnitudes till errors meet requirements. The same-tower multi-loop electric transmission system is segmented, a line model is matched for each segment with the line length of each s