Patent ID: 6691051
Filing Date: 2004-02-10
Classification: H04B

Abstract:
A method of determining distance to fault of a transient event in a transmission system while perturbing the system comprising the steps of:at each frequency over a range of discrete frequencies acquiring an initial set of I and Q data representing voltage and phase information of a reflected signal in the frequency domain from the transmission system and storing the initial set as a reference set; acquiring subsequent sets of I and Q data at each frequency as a current set; between each acquisition of I and Q data sets for the current set comparing each entry of the current set with a corresponding entry of the reference set; for each comparison updating with the entry from the current set a corresponding entry of a result set when the comparison exceeds a specified tolerance value, the result set being initially set to all zeros; and converting the result set from the frequency domain to the time domain to display the distance to fault of the transient event.