Abstract
In view of the strong coupling between the parallel transmission lines of different voltage levels and different towers running in the common corridor, in order to study the electrical imbalance between the 750kV transmission line and the 330kV transmission line erected in the common corridor, the simulation analysis of the common corridor transmission and distribution Causes and influencing factors of induced voltage in electric lines. The system equivalent model is established by using ATP-EMTP. The results show that the 750kV transmission line has obvious electrostatic induction voltage to the 330kV transmission line parallel to the corridor, and the electromagnetic induction voltage between them is not obvious. The influence of 750kV transmission lines on 330kV distribution lines is related to the transmission power. The greater the line power, the more severe the three-phase voltage imbalance of 330kV distribution lines, and vice versa.
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