Wide-Frequency Synchrophasor Transfer Method Based on Channel TDM

Wide-frequency synchrophasor is the general term for synchrophasors of harmonics and interharmonics from low frequency to high frequency. Limited by existing transfer standard and transmission channel bandwidth, the current Wide Area Measurement System (WAMS) cannot transfer wide-frequency synchrophasors and can only transfer fundamental synchrophasors. This paper provides a wide-frequency synchrophasor transfer method from substation to master station, and focuses on the channel time division multiplexing (TDM) technology. The compatibility of the transfer method based on this technology with the existing protocol and the network characteristics are analyzed. At last, the feasibility of the method is verified by simulation experiments. Within the channel TDM method, the wide-frequency synchrophasor can be transferred from substation to master station under the existing WAMS architecture and transfer standard, and the transfer method satisfies the requirements of the existing physical channel bandwidth.