Identification of power system primary arcs based on pulse density
AssigneeRadar Engineers
InventorsJohn D. Sanderson, Forrest S. Seitz, Jack C. Talmadge
Life of this patent
Estimating the term…
Abstract
A diagnostic instrument distinguishes primary arcs from other electrical discharges in an electric power system based on pulse time density of radio frequency noise caused by the discharges. The instrument counts a maximum number of noise pulses in any small time window over a period, and identifies the discharges as primary arcs if the pulse time density is in a range characteristics of primary arcs.
Claims23
A method of detecting primary arcs on an electric power system, the method comprising:
- receiving a sensor signal;
- analyzing the sensor signal to detect noise pulses within the sensor signal produced by any nearby electrical discharge;
- counting the noise pulses for at least one time duration, wherein each said duration is less than one half cycle of the electric power system;
- determining a measurement related to noise pulse density based on said counting;
- and
- producing an output result based on the measurement.
A diagnostic instrument for distinguishing primary arcs from other electrical discharges in an electric power system, the diagnostic instrument comprising:
- a receiver for receiving a sensor signal;
- a detection circuit for sensing noise pulses on the sensor signal caused by electrical discharges;
- a primary arc identification circuit operating to produce a measurement value relating to time density of the noise pulses in at least one time duration wherein each said time duration being less than one half cycle of the electric power system, and to determine whether the measurement value is in a range characteristic of primary arcs;
- an output for indicating a primary arc detection result when the measurement value is determined to be in the range characteristic of primary arcs.
Dependencies are inferred from the claim text.