Influence analysis of soil resistivity to induced voltage and current for transmission systems

As UHV double-circuit and Multiple-Circuit transmission line corridor were widely set up, it made the interaction among the various systems of common corridor worse. It is a serious problem to the running stability and reliability of transmission line. The interactions include the induced voltage generated by electric field capacitive coupling, the induced electromotive force and induced current by magnetic field inductive coupling. In this paper, the software EMTP of electromagnetic transient simulation was used to analyze the induced voltage and current among transmission lines of Right-of-way. In a summary, induced electromotive force and induced current will be changed obviously in the condition of soil resistivity Within a certain range. The results provide advices for the selection and design of power transmission equipment.