DEVICE, ARRANGEMENT AND METHOD FOR VERIFYING THE OPERATION OF ELECTRICITY METER
First Claim
1. An electronic electricity meter for monitoring electrical power consumption due to a plurality of loads, comprising:
- an electric power sensor configured to register data indicative of aggregate power demand of a number of loads coupled to a common electrical power source,a load tracker configured to detect the effect of individual loads on the basis of distinctive load patterns in said data, wherein the tracker is configured to utilize a distinctive load pattern detected in said data as at least a basis for a reference pattern for subsequent detections of the effect of the same load in the data,an accuracy analyzer configured to, on the basis of comparisons of subsequent detections with the corresponding references, determine whether the comparisons relating to at least two loads each indicate the difference between the subsequently detected pattern and the corresponding reference exceeding a predetermined threshold, anda notifier configured to send, provided that positive determination has taken place a notification signal indicative of potential fault with the electricity meter towards an external entity.
2 Assignments
0 Petitions
Accused Products
Abstract
An electronic electricity meter (102) for monitoring electrical power consumption due to a plurality of loads, comprising electric power sensor (506A, 506, 502, 504, 508) configured to register, optionally in a substantially real-time fashion, data indicative of aggregate power demand (202) of a number of loads coupled to a common electrical power source, such as one or more phases of a polyphase system, load tracker (506B, 506, 502, 504) configured to detect the effect of individual loads on the basis of distinctive load patterns in said data, wherein the tracker is configured to utilize a distinctive load pattern detected in said data as at least a basis for a reference pattern (304, 306, 308) for subsequent detections (304a, 306a, 308a) of the effect of the same load in the data, accuracy analyzer (506C, 506, 502, 504) configured to, on the basis of comparisons of subsequent detections with the corresponding references, determine (312, 314, 316) whether the comparisons relating to at least two, preferably three, loads each indicate the difference between the subsequently detected pattern and the corresponding reference exceeding a predetermined threshold, and notifier (506D, 506, 502, 504, 508) configured to send, provided that positive determination has taken place (318), a notification signal indicative of potential fault with the electricity meter towards an external entity (106, 108). Corresponding arrangement and method are presented.
15 Citations
16 Claims
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1. An electronic electricity meter for monitoring electrical power consumption due to a plurality of loads, comprising:
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an electric power sensor configured to register data indicative of aggregate power demand of a number of loads coupled to a common electrical power source, a load tracker configured to detect the effect of individual loads on the basis of distinctive load patterns in said data, wherein the tracker is configured to utilize a distinctive load pattern detected in said data as at least a basis for a reference pattern for subsequent detections of the effect of the same load in the data, an accuracy analyzer configured to, on the basis of comparisons of subsequent detections with the corresponding references, determine whether the comparisons relating to at least two loads each indicate the difference between the subsequently detected pattern and the corresponding reference exceeding a predetermined threshold, and a notifier configured to send, provided that positive determination has taken place a notification signal indicative of potential fault with the electricity meter towards an external entity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for verifying the operation of an electricity meter configured to monitor electrical power consumption due to a plurality of loads, comprising:
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an electric power tracker configured to obtain data indicative of aggregate power demand of a number of loads coupled to a common electrical power source as measured by the meter, a load tracker configured to detect the effect of individual loads on the basis of distinctive load patterns in said data, wherein the tracker is configured to utilize a distinctive load pattern detected in said data as at least a basis for a reference pattern for subsequent detections of the effect of the same load in the data, an accuracy analyzer configured to, on the basis of a comparison of subsequent detections of the effect of loads with the corresponding references, determine whether the comparisons relating to at least two loads each indicate the difference between the subsequent pattern and the corresponding reference exceeding a predetermined threshold, and a notifier configured to trigger, provided that positive determination has taken place, a notification signal indicative of potential fault with the electricity meter. - View Dependent Claims (13)
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14. A method for verifying the operation of electricity meter, comprising:
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obtaining data indicative of aggregate power demand of a number of loads coupled to a common electrical power source, detecting the effect of individual loads in said data on the basis of distinctive load patterns therein wherein a distinctive load pattern detected in said data is utilized as at least a basis for a reference pattern for subsequent detections of the effect of the same load in the data, comparing subsequent detections of the effect of loads with the corresponding references, and determining whether such comparisons relating to at least two loads each indicate the difference between the subsequent pattern and the corresponding reference exceeding a predetermined threshold, and triggering provided that positive determination has taken place, a notification signal indicative of potential fault with the electricity meter. - View Dependent Claims (15, 16)
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Specification