ROBUST AUTOMATED HIERARCHICAL DETERMINATION FOR POWER MONITORING SYSTEMS
First Claim
1. A method of automatically determining how a plurality of monitoring devices are linked together in a utility monitoring system, comprising:
- receiving from each of the monitoring devices respective device data that includes a plurality of values that are indicative of a characteristic of a utility measured by and stored on the corresponding monitoring device;
calculating, using one or more controllers, a first variance of the values received from a reference one of the monitoring devices;
calculating, using the one or more controllers, a second variance of the values received from a second of the monitoring devices;
responsive to the first variance or the second variance not satisfying a variance criterion, storing on one or more memory devices an indication that the corresponding monitoring device is an orphan;
responsive to the first variance or the second variance satisfying the variance criterion, including the corresponding monitoring device in a set of non-orphaned monitoring devices;
responsive to the reference monitoring device and the second monitoring device being in the set of non-orphaned monitoring devices, segmenting, using the one or more controllers, the respective device data for the reference monitoring device and for the second monitoring device into a corresponding plurality of data segments;
calculating, using the one or more controllers, a correlation coefficient based on the data segments associated with the reference monitoring device and based on the corresponding data segments associated with the second monitoring device; and
responsive to the correlation coefficient satisfying a correlation criterion, storing an indication on the one or more memory devices that the reference monitoring device is linked to the second monitoring device in the utility monitoring system.
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Accused Products
Abstract
An automated hierarchy classification algorithm that searches for a child monitoring device'"'"'s parent in a utility monitoring system by segmenting the device data measured by a given device pair and calculating a segment correlation coefficient for each data segment. Devices to be placed in the hierarchy are filtered by calculating the variance of their device data and eliminating devices with a low variance. Devices are ranked by computing the sum of squares of their device data and ordering the devices accordingly from highest to lowest. The device data is segmented and segment correlation coefficients are averaged to produce an overall correlation coefficient. Criteria are evaluated to determine whether a device pair is linked. A correlation coefficient is calculated using the complete data series of a device pair, and the solution produced by this approach is compared with the solution produced by segmenting the device data. If the solutions disagree, a likely candidate is determined from a fuzzy logic module.
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Citations
20 Claims
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1. A method of automatically determining how a plurality of monitoring devices are linked together in a utility monitoring system, comprising:
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receiving from each of the monitoring devices respective device data that includes a plurality of values that are indicative of a characteristic of a utility measured by and stored on the corresponding monitoring device; calculating, using one or more controllers, a first variance of the values received from a reference one of the monitoring devices; calculating, using the one or more controllers, a second variance of the values received from a second of the monitoring devices; responsive to the first variance or the second variance not satisfying a variance criterion, storing on one or more memory devices an indication that the corresponding monitoring device is an orphan; responsive to the first variance or the second variance satisfying the variance criterion, including the corresponding monitoring device in a set of non-orphaned monitoring devices; responsive to the reference monitoring device and the second monitoring device being in the set of non-orphaned monitoring devices, segmenting, using the one or more controllers, the respective device data for the reference monitoring device and for the second monitoring device into a corresponding plurality of data segments; calculating, using the one or more controllers, a correlation coefficient based on the data segments associated with the reference monitoring device and based on the corresponding data segments associated with the second monitoring device; and responsive to the correlation coefficient satisfying a correlation criterion, storing an indication on the one or more memory devices that the reference monitoring device is linked to the second monitoring device in the utility monitoring system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of automatically determining how a plurality of monitoring devices are linked together in a utility monitoring system, comprising:
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receiving from each of the monitoring devices respective device data that includes a plurality of values each indicative of a characteristic of a utility measured by and stored on the corresponding monitoring device; for each of the device data, calculating, using one or more controllers, a variance of the values received from the corresponding monitoring device; responsive to the variance not satisfying a variance criterion, including the corresponding monitoring device as an orphan in a set of orphaned monitoring devices; responsive to the variance satisfying the variance criterion, including the corresponding monitoring device in a set of non-orphaned monitoring devices; ranking, using the one or more controllers, each of the non-orphaned monitoring devices in a predetermined order from a highest rank to a lowest rank starting with a top-ranked one of the non-orphaned monitoring devices; for a reference one the non-orphaned monitoring devices, determining whether a second one of the monitoring devices is linked to the reference monitoring device by; segmenting the device data of the reference monitoring device into a first plurality of data segments, segmenting the device data of the second monitoring device into a second plurality of data segments, calculating a first correlation coefficient based on the first data segments and the second data segments, responsive to the first correlation coefficient satisfying a first criterion, indicating, as a first solution, that the reference monitoring device and the second monitoring device are linked; for the reference monitoring device, determining whether the second monitoring device is linked to the reference monitoring device by; calculating a second correlation coefficient based on the device data of the reference monitoring device and the device data of the second monitoring device, and responsive to the second correlation coefficient satisfying a second criterion, indicating, as a second solution, that the reference monitoring device and the second monitoring device are linked; responsive to the first solution being different from the second solution, selecting one of the solutions using a fuzzy logic algorithm; and responsive to the selecting, storing an indication which of the monitoring devices the reference monitoring device is linked to in the utility monitoring system. - View Dependent Claims (20)
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Specification