Power line sag monitoring device

Patent metadata

Field	Value
Publication number	US-11733276-B2
Application number	US-202217811482-A
Country	US
Kind code	B2
Filing date	Jul 8, 2022
Priority date	Jan 15, 2019
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

The present disclosure relates to systems and methods of sag in a power line. In an embodiment, a monitoring device may include a distance sensor and an operating parameter sensor. A processor of the monitoring device may acquire, via the distance sensor, a first distance measurement. The processor may acquire, via the operating parameter sensor, a first operating parameter measurement. The processor may provide an output signal indicating that the power line is sagging when a combination of the first distance measurement and the first operating parameter measurement exceed a first combined distance-operating parameter threshold.

First claim

What is claimed is:

1. A non-transitory, computer readable medium comprising instructions, that when executed by a processor, cause the processor to perform operations, comprising:
receive operating parameter measurements of a first operating parameter of a power line over a period of time;
determine a power line sag based on a comparison of the operating parameter measurements to an operating parameter over-time threshold;
provide an output signal indicating that the power line sag exceeds a threshold when the operating parameter measurements have exceeded the operating parameter over-time threshold for the entirety of the period of time.

2. The non-transitory, computer readable medium of claim 1 , comprising instructions that, when executed by the processor, cause the processor to:
receive first current measurements of the power line over the period of time; and
determine whether the current measurements on the power line exceed a current-over-time threshold over the period of time.

3. The non-transitory, computer readable medium of claim 1 , comprising instructions that, when executed by the processor, cause the processor to:
acquire, via an ultrasonic sensor, a first distance measurement between the power line and the ground or nearest object; and
provide the output signal when a combination of the first distance measurement and one or more of the operating parameter measurements exceed a first combined distance-operating parameter threshold.

4. The non-transitory, computer readable medium of claim 3 , comprising instructions that, when executed by the processor, cause the processor to:
compare a combination of the first distance measurement and a change in the distance over the period of time to a distance-dD/dt threshold; and
provide the output signal when the combination of the first distance measurement and the change in the distance exceeds the distance-dD/dt threshold.

5. The non-transitory, computer readable medium of claim 4 , wherein the distance-dD/dt threshold comprises a linear relationship between distance and change in distance over time.

Assignees

• Schweitzer Engineering Lab Inc

Inventors

• Manson Scott M
• Achanta Shankar V
• Zweigle Gregary C
• Edge Richard M

Classifications

• G01R19/2513 Primary

  Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging · CPC title

• G01B17/00

  Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations · CPC title

• G01P15/18

  in two or more dimensions · CPC title

• G01R19/16571

  comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current (G01R19/16514, G01R19/16519, G01R19/16528, G01R19/16533, G01R19/1659 take precedence; measuring currents by using elements sensitive to the magnetic field generated G01R15/14; measuring earth resistance G01R27/18; testing for leakage or short circuits in electrical apparatus G01R31/52) · CPC title

• G01R31/085

  in power transmission or distribution lines, e.g. overhead · CPC title