Methods and apparatus for determining conditions of power lines
First Claim
1. A method for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system, the method comprising:
- obtaining first transformed data associated with a first set of one or more measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, the first transformed data comprising a first plurality of transform coefficient values calculated by applying a multiresolution shift invariant transformation to the first set of measurements, the second transformed data comprising a second plurality of transform coefficient values calculated by applying the multiresolution shift-invariant transformation to the second set of measurements;
determining a first energy of a first subset of transform coefficient values in the first plurality of transform coefficient values, the first subset comprising transform coefficient values associated with a first resolution;
determining a second energy of a second subset of transform coefficient values in the second plurality of transform coefficient values, the second subset comprising transform coefficient values associated with the first resolution; and
determining, by using at least one processor and based at least in part on a result of comparing the first energy and the second energy, a condition affecting at least one power line in the power distribution system,wherein the first sensor unit and the second sensor unit are coupled to different power line segments.
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Abstract
Techniques for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system. Techniques include obtaining first transformed data associated with a first set of one or more measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, and determining, by using at least one processor and based at least in part on one or more features calculated from the first transformed data and the second transformed data, at least one condition of at least one power line in the power distribution system.
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Citations
23 Claims
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1. A method for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system, the method comprising:
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obtaining first transformed data associated with a first set of one or more measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, the first transformed data comprising a first plurality of transform coefficient values calculated by applying a multiresolution shift invariant transformation to the first set of measurements, the second transformed data comprising a second plurality of transform coefficient values calculated by applying the multiresolution shift-invariant transformation to the second set of measurements; determining a first energy of a first subset of transform coefficient values in the first plurality of transform coefficient values, the first subset comprising transform coefficient values associated with a first resolution; determining a second energy of a second subset of transform coefficient values in the second plurality of transform coefficient values, the second subset comprising transform coefficient values associated with the first resolution; and determining, by using at least one processor and based at least in part on a result of comparing the first energy and the second energy, a condition affecting at least one power line in the power distribution system, wherein the first sensor unit and the second sensor unit are coupled to different power line segments. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. At least one non-transitory tangible computer readable storage medium storing processor-executable instructions that, when executed by at least one processor, cause the at least one processor to perform a method for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system, the method comprising:
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obtaining first transformed data associated with a first set of one or more measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, the first transformed data comprising a first plurality of transform coefficient values calculated by applying a multiresolution shift invariant transformation to the first set of measurements, the second transformed data comprising a second plurality of transform coefficient values calculated by applying the multiresolution shift-invariant transformation to the second set of measurements; determining a first energy of a first subset of transform coefficient values in the first plurality of transform coefficient values, the first subset comprising transform coefficient values associated with a first resolution; determining a second energy of a second subset of transform coefficient values in the second plurality of transform coefficient values, the second subset comprising transform coefficient values associated with the first resolution; and determining, by using at least one processor and based at least in part on a result of comparing the first energy and the second energy, a condition affecting at least one power line in the power distribution system, wherein the first sensor unit and the second sensor unit are coupled to different power line segments. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A management system for a power distribution system comprising a plurality of power lines, a plurality of sensor units configured to collect measurements about power lines in the plurality of power lines, wherein the plurality of sensor units includes a first sensor unit and a second sensor unit adapted to be coupled to a different power line from the first sensor unit, the management system comprising:
at least one controller configured to; obtain first transformed data associated with a first set of one or more measurements collected by the first sensor unit and second transformed data associated with a second set of one or more measurements collected by the second sensor unit, the first transformed data comprising a first plurality of transform coefficient values calculated by applying a multiresolution shift invariant transformation to the first set of measurements, the second transformed data comprising a second plurality of transform coefficients values calculated by applying the multiresolution shift-invariant transformation to the second set of measurements; determine a first energy of a first subset of transform coefficient values in the first plurality of transform coefficient values, the first subset comprising transform coefficient values associated with a first resolution; determine a second energy of a second subset of transform coefficient values in the second plurality of transform coefficient values, the second subset comprising transform coefficient values associated with the first resolution; and determine, based at least in part on a result of comparing the first energy and the second energy, a condition affecting at least one power line in the power distribution system. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A plurality of sensor units configured to be coupled to different power lines in a power distribution system, the plurality of sensor units including a first sensor unit and a second sensor unit,
the first sensor unit being configured to: -
collect a first set of one or more measurements from a first power line, apply a multiresolution shift-invariant transformation to the first set of one or more measurements to produce a first plurality of transform coefficient values, and transmit a first subset of transform coefficient values associated with a first resolution in the first plurality of transformed coefficient values to at least one computer for comparing a first energy of the first subset of transform coefficient values with a second energy of a corresponding subset of transform coefficient values provided to the at least one computer by the second sensor unit; the second sensor unit being configured to; collect a second set of one or more measurements from a second power line different from the first power line, apply the multiresolution shift-invariant transformation to the second set of one or more measurements to produce a second plurality of transform coefficient values, and transmit a second subset of transform coefficient values associated with the first resolution in the second plurality of transformed coefficient values to the at least one computer for comparing the second energy of the second subset of transform coefficient values with the first energy of the first subset of transform coefficients, the second subset of transform coefficient values corresponding to the first subset of transform coefficient values. - View Dependent Claims (22, 23)
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Specification