US 12,130,322 B2
Traveling wave analysis and fault locating for electric power systems
Ellery A. Blood, West Lafayette, IN (US); Gregory R. Smelich, Butte, MT (US); and Riley Grant Huddleston, Moscow, ID (US)
Assigned to Schweitzer Engineering Laboratories, Inc., Pullman, WA (US)
Filed by Schweitzer Engineering Laboratories, Inc., Pullman, WA (US)
Filed on Dec. 2, 2022, as Appl. No. 18/061,118.
Prior Publication US 2024/0183893 A1, Jun. 6, 2024
Int. Cl. G01R 31/08 (2020.01)
CPC G01R 31/088 (2013.01) [G01R 31/085 (2013.01); G01R 31/086 (2013.01)] 18 Claims
OG exemplary drawing
 
8. A system configured to determine a fault location in an electric power delivery system, comprising:
a first data acquisition subsystem configured to generate a measurement corresponding to a traveling wave arrival and a first plurality of measurements corresponding to arrival times of the traveling wave at a local terminal;
a second data acquisition subsystem configured to generate a measurement corresponding to the traveling wave and a second plurality of measurements corresponding to arrival times of the traveling wave at a remote terminal; and
a traveling wave analysis subsystem configured to:
analyze measured traveling wave data from the first data acquisition subsystem and the second data acquisition subsystem;
receive user input to correlate at least one of the first plurality of measurements and the second plurality of measurements to a Bewley lattice diagram; and
adjust a parameter related to the fault based on the user input;
wherein the traveling wave analysis subsystem is configured to generate a representation of a traveling wave signal received at the local terminal and a traveling wave signal received at the remote terminal on the Bewley lattice diagram; and
wherein user input comprises adjustment of at least one cursor to align at least one peak of the measured traveling wave signal at the local terminal or the measured traveling wave signal at the remote terminal to traveling waves that arrive at the respective line terminal according to the Bewley lattice diagram.