System and method for condition monitoring of electricity transmission structures

Patent metadata

Field	Value
Publication number	US-10209291-B2
Application number	US-201715426038-A
Country	US
Kind code	B2
Filing date	Feb 6, 2017
Priority date	Feb 4, 2016
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

System and method for monitoring the condition of electricity conductor support systems, i.e. towers, in a power network distribution system employing a tower structure integrity sensor assemblage. The system allows for identifying particular portions of a structural system for maintenance attention. The tower sensors allow identification of structural failures of electricity transmission towers.

First claim

The invention claimed is:

1. The method for detecting and generally locating incipient faults of a structural component of an electrical power delivery system exhibiting a fundamental fault indicator and located at a given position, comprising the steps:
providing a detector alert assemblage including a sensor input antenna, a computer controllable radio receiver having a data output, and a receiver providing position data;
propagating a signal through an electrically conducting element of a structural component in order to measure the impedance of a structure; determining a relative impedance of a structure by measuring current flow; monitoring a segment of electricity conductor support structures using a propagated signal and comparing said segment of support structures to signals from related structures;
determining a fault signature through a relative change in impedance; receiving and processing said fault indicator output; and detecting said signal values and classifying them as to fault probability to provide classified signal values, with position data to provide position associated fault probability values and submitting them to said fault storage function.

2. The method of claim 1 in which:
said detector alert assemblage is capable of detecting faults about a structural element capable of carrying an electrical signal.

3. The method of claim 2 further comprising a structural element that is one or more of an electricity transmission support tower, an electricity distribution conductor support pole, a power pole, a pipeline, a pipe, or a structural alloy member.

4. The method of claim 1 further comprising a fault indicator output that is one or more of impedance, resistance, load and EMF emission.

5. The method of claim 2 further comprising:
a fault data storage server configured to receive said compiled fault probability value and position data from a communications network; and a modem within said housing controllable by said control computer to communicate said compiled merit values and position data to said fault data storage server.

6. The method of claim 1 in which:
power is supplied to the detector alert assemblage by a storage battery electrical power supply that is charged by one or more of an inductive charger, a solar charger, a wired transformer, and a turbine generator.

7. The method of claim 3 in which said system further comprises: a weather sensing assemblage having an environmental status output providing ambient temperature, humidity or barometric pressure; and said control computer is responsive to submit said environmental status output to said storage facility in conjunction with the submittal of said compiled merit values and position data.

8. A system for detecting and generally locating incipient faults at a component of an electrical power delivery system exhibiting a fundamental fault indicator and located at a given segment of electricity conductor, comprising: a signal receiving assemblage, a computer controllable radio receiver having a data output, and a receiver providing position data; including at least one sensor input antenna, a first computer controllable radio receiver operatively coupled with said antenna having a first amplitude detected output, a second computer controllable wideband radio receiver operatively coupled with said antenna having a second amplitude detected output, and a positioning system providing position data; an isolated segment of electricity conductor;
propagating a test signal along a segment of electricity conducting element;
receiving and processing a fault indicator output for detecting signal values and classifying them as to fault probability to provide classified signal values, with position data to provide position associated fault probability values; a signal converter responsive to said first propagated frequency amplitude output to convert it to digital form at a sampling rate to provide fault related parameter samples;
a signal processor configured for extracting narrow band signal frequencies therefrom that are harmonically related to said fundamental frequency, analyzing said signals to derive maintenance merit values; and a control computer including a digital storage facility and responsive when a said fault related parameter maintenance merit value is below a setpoint; and submitting maintenance merit values to said fault storage function; and utilizing such compiled data for alerting of an incipient fault.

9. The system of claim 8 , wherein said detector alert assemblage is capable of detecting faults about a structural element capable of carrying an electrical signal.

10. The system of claim 9 in which:
said control computer is responsive to submit said digital samples as raw data to the storage facility to develop a signature analysis capability.

11. The system of claim 8 further comprising:
a fault data storage server configured to receive said compiled maintenance merit values and GPS position data from a communications network; and a modem controllable by said control computer to broadcast compiled maintenance merit values and position data to said fault data storage server.

12. A sensor for identifying or locating service incident faults relating to a structural component of an electrical power delivery system exhibiting a fault indication at a position, comprising the steps:
a) a detector alert assemblage including a sensor input antenna, a computer controllable radio receiver having a data output, and a receiver providing position data;
b) a signal emitter for propagating a current flow signal through one or more electrically conducting elements associated with the structural component
c) measuring the impedance of electrically conducting elements associated with the structure by propagating a current flow signal;
d) recording a relative impedance of said conducting elements by measuring relative current flow signal for a given voltage;
e) monitoring the relative impedance of the structural component over time;
f) determining a fault signature associated with a change in relative impedance;
g) receiving and processing said fault signature; and
h) detecting said fault signatures and classifying them as to fault probability to provide classified signal values, correlated with position data to provide position associated fault probability values and submitting them to said fault storage function, so that a position related fault probability can be utilized to determine the location of a service incident.

13. The sensor of claim 12 further comprising monitoring a segment of electricity conductor support structures using a propagated signal and comparing said segment of support structures to signals from related structures.

14. The sensor of claim 12 further comprising the service incident is one or more of a structural failure, a structural degradation, a structural alteration resulting from human intervention, an electromagnetic phenomenon, and a weather event.

15. The sensor of claim 12 further comprising a sensor that is mounted on one or more of a high voltage transmission tower, a transmission tower, a electrically connected network on a non-conducting structure, a metal electricity pole, a wooden pole with a conducting element attached, an antenna, a radio antenna, and a cellular telephone antenna.

Assignees

• Sozer Yilmaz
• De Abreu Garcia Jose Alexis
• Lauletta John
• Univ Akron

Inventors

• Sozer Yilmaz
• De Abreu-Garcia Jose Alexis
• Lauletta John

Classifications

• G01R31/08

  Locating faults in cables, transmission lines, or networks · CPC title

• H02J11/00

  Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted · CPC title

• G01M5/0058

  of elongated objects, e.g. pipes, masts, towers or railways · CPC title

• E04H12/00

  Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures (cooling towers E04H5/12; derricks for oil drilling E21B15/00) · CPC title

• G01M5/0025

  of elongated objects, e.g. pipes, masts, towers or railways (G01M5/0058 takes precedence) · CPC title