Research on Wave Trapping Method for Incentive De icing of Power Transmission Lines
High frequency high voltage excitation de icing is a kind of methods of realizing the transmission line on line power de icing,using this de icing technology on transmission line,the excitation device produces both a higher fequency harmonic wave for deicing and a low harmonic waves because of the internal excitation power electronics. This paper designs a set of line resistance wave method for 18 kV /40 kHz high frequency high voltage de icing technology,the high frequency wave traps access at the transmission line ends,using the principle of single frequency allowing only 40 kHz high frequency signal through in the line of de icing to ensure the high frequency de icing. The active power filter is used to suppress the low order harmonics because of the internal excitation power electronics to ensure the quality of power transmission. By simulation,the correctness of preventing wave method for high frequency high voltage de ice lines was verified.