A Parameter Measuring Method of Coupling Transmission Lines Based on the Distributed Parameter Model of Power Transmission Lines

摘要

In view of the present common transmission line parameters online measurement methods having shortcomings of being unable to measure the self-admittance and mutual admittance, this paper presents a line parameters online measurement method based on transmission line equation. This method considers transmission line equation as the theoretical basis, building a symmetrical three-phase distributed parameter line model and using the synchronous data of both ends of transmission line to derive the parameter calculating formulas, the simulation result proves the correctness of this method, which provides a theoretical basis for the online measurement method of transmission lines.