Field Testing of Synchrophasor Based Estimation of Two-terminal Transmission Line Parameters

Estimating the line parameters of a two-terminal transmission line from synchrophasor measurements is useful for accurate representation of transmission lines in power system simulation studies. This paper evaluates three such methods, namely, a pointwise method, a least-square estimation method and a new mean-filter based method for estimation of two-terminal transmission line parameters. It presents the application and test results of these methods for archived field measurements in Southern California.