Automated synchronization of data between electrical grids
First Claim
1. A method of automatically associating data measured by monitoring devices that monitor independent alternating current electrical grids, comprising:
- receiving, at a master synchronization device, first signal data from a first set of power monitoring devices that are monitoring current or voltage outputs for power consumption from a first electrical grid, the first signal data representing at least frequency variations in energy supplied by the first electrical grid and the values of current or voltage outputs from the first set of power monitoring devices, the frequency variations of the first signal data being measured by respective ones of the first monitoring devices for a predetermined number of occurrences;
automatically synchronizing, in the master synchronization device, the frequency variations measured by each of the first monitoring devices and producing a first occurrence counter that counts a periodic occurrence in the synchronized frequency variations associated with the first monitoring devices;
receiving, at the master synchronization device, second signal data from a second set of power monitoring devices that are monitoring current or voltage outputs for power consumption from a second electrical grid, the second electrical grid independent of the first electrical grid and producing alternating current signals that are electrically isolated from alternating current signals produced by the first electrical grid, the second signal data representing at least frequency variations in energy produced by the second electrical grid and the values of current or voltage from the second set of power monitoring devices, the frequency variations of the second signal data being measured by respective ones of the second monitoring devices for a predetermined number of occurrences at a time coincident with a time that the first set of monitoring devices measure the frequency variations in the energy supplied by the first electrical grid;
automatically synchronizing, in the master synchronization device, the frequency variations measured by each of the second monitoring devices and producing a second occurrence counter that counts a periodic occurrence in the synchronized frequency variations associated with the second monitoring devices;
automatically comparing, in the master synchronization device, a first count of the first occurrence counter with a first count of the second occurrence counter, wherein the first count of the first occurrence counter and the first count of the second occurrence counter temporally correspond to an electrical event in the first electrical grid and the second electrical grid; and
determining a relationship between the first signal data and the second signal data by associating the first count of the first occurrence counter and the first count of the second occurrence counter to collect the first and second signal data and the first and second occurrence counters for analysis of the first and second signal data independent of changing power supplied by the first and second electrical grids.
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Accused Products
Abstract
A method and system of automatically correlating data measured by monitoring devices that monitor first and second electrical grids. The second electrical grid producing alternating current signals that are electrically isolated from alternating current signals produced by the first electrical grid. An example power monitoring device includes a controller, a first monitoring device interface and a second monitoring device interface. The first monitoring device interface is coupled to a first monitoring device in the first electrical grid and the second monitoring device interface is coupled to a second monitoring device in the second electrical grid. A first counter stores data counts of occurrences from the first electrical grid. A second counter stores data counts of occurrences from the second electrical grid. A synchronization monitoring algorithm automatically synchronizes the first and second counters by associating a data count from the first counter with a data count from the second counter with a time from either the first or second grid corresponding to the occurrence of an event on either the first or the second electrical grid or both.
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Citations
20 Claims
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1. A method of automatically associating data measured by monitoring devices that monitor independent alternating current electrical grids, comprising:
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receiving, at a master synchronization device, first signal data from a first set of power monitoring devices that are monitoring current or voltage outputs for power consumption from a first electrical grid, the first signal data representing at least frequency variations in energy supplied by the first electrical grid and the values of current or voltage outputs from the first set of power monitoring devices, the frequency variations of the first signal data being measured by respective ones of the first monitoring devices for a predetermined number of occurrences; automatically synchronizing, in the master synchronization device, the frequency variations measured by each of the first monitoring devices and producing a first occurrence counter that counts a periodic occurrence in the synchronized frequency variations associated with the first monitoring devices; receiving, at the master synchronization device, second signal data from a second set of power monitoring devices that are monitoring current or voltage outputs for power consumption from a second electrical grid, the second electrical grid independent of the first electrical grid and producing alternating current signals that are electrically isolated from alternating current signals produced by the first electrical grid, the second signal data representing at least frequency variations in energy produced by the second electrical grid and the values of current or voltage from the second set of power monitoring devices, the frequency variations of the second signal data being measured by respective ones of the second monitoring devices for a predetermined number of occurrences at a time coincident with a time that the first set of monitoring devices measure the frequency variations in the energy supplied by the first electrical grid; automatically synchronizing, in the master synchronization device, the frequency variations measured by each of the second monitoring devices and producing a second occurrence counter that counts a periodic occurrence in the synchronized frequency variations associated with the second monitoring devices; automatically comparing, in the master synchronization device, a first count of the first occurrence counter with a first count of the second occurrence counter, wherein the first count of the first occurrence counter and the first count of the second occurrence counter temporally correspond to an electrical event in the first electrical grid and the second electrical grid; and determining a relationship between the first signal data and the second signal data by associating the first count of the first occurrence counter and the first count of the second occurrence counter to collect the first and second signal data and the first and second occurrence counters for analysis of the first and second signal data independent of changing power supplied by the first and second electrical grids. - View Dependent Claims (2, 3, 4, 14, 15, 16)
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5. A power monitoring device for associating data between a first and second electrical grid, the second electrical grid producing alternating current signals that are independent of and electrically isolated from alternating current signals produced by the first electrical grid, the power monitoring device comprising:
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a controller; a first monitoring device interface coupled to a first monitoring device in the first electrical grid, the first monitoring device monitoring current or voltage outputs for power consumption from the first electrical grid; a second monitoring device interface coupled to a second monitoring device in the independent and electrically isolated second electrical grid, the second monitoring device monitoring current or voltage outputs for power consumption from the second electrical grid; a first counter corresponding to data counts of occurrences in energy supplied by the first electrical grid and measured by the first monitoring device; a second counter corresponding to data counts of occurrences in energy supplied by the second electrical grid and measured by the second monitoring device at a time coincident with a time that the occurrences from the first electrical grid are measured by the first monitoring device; and a synchronization monitoring algorithm automatically synchronizing the first and second counters by associating a data count from the first counter with a data count from the second counter with a time corresponding to the occurrence of an electrical event on both the first and the second electrical grids to collect the first and second signal data and the first and second occurrence counters for analysis of the first and second signal data independent of changing power supplied by the first and second electrical grids, the synchronization monitoring algorithm being used to determine a relationship between the first counter and the second counter. - View Dependent Claims (6, 7, 8, 9, 10, 17, 18)
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11. A non-transitory machine readable medium having stored thereon instructions for associating data measured from a first and a second electrical grid, the second electrical grid producing alternating current signals that are independent of and electrically isolated from alternating current signals produced by the first electrical grid, comprising machine executable code, which when executed by at least one machine, causes the machine to:
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receive first signal data from a first power monitoring device monitoring current or voltage outputs for power consumption from the first electrical grid, the first signal data representing frequency variations in energy supplied by the first electrical grid and the values of current or voltage outputs from first power monitoring device, the frequency variations of the first signal data being measured by the first monitoring device for a predetermined number of occurrences; receive second signal data from a second power monitoring device monitoring current or voltage outputs for power consumption from the independent and electrically isolated second electrical grid, the second signal data representing at least frequency variations in energy produced by the second electrical grid and the values of current or voltage from the second set of power monitoring devices, the frequency variations of the second signal data being measured by the second monitoring device for a predetermined number of occurrences at a time coincident with a time that the first monitoring device measures the frequency variations in the energy supplied by the first electrical grid; determine a first occurrence count corresponding to a perturbation measured by the first monitoring device; determine a second occurrence count corresponding to the perturbation measured by the second monitoring device; associate the first occurrence count with the second occurrence count based on a time measurement of the perturbation occurring in both the first and the second electrical grids; and determine a relationship between the first signal data and the second signal data using the associated first and second occurrence counts to collect the first and second signal data and the first and second occurrence counters for analysis of the first and second signal data independent of changing power supplied by the first and second electrical grids. - View Dependent Claims (12, 13, 19, 20)
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Specification