An electric meter includes a housing, a first set of connection paths, and a second set of connection paths. The first set of connection paths couple to a meter socket and are electrically coupled to a first electrical connection path between first phases of an electric distribution power source, a distributed energy resource device, and a load. First electrical metrology components of the first electrical connection path are positioned within a first segment of the housing. The second set of connection paths couple to a meter socket and are electrically coupled to a second electrical connection path between second phases of the electric distribution power source, the distributed energy resource device, and the load. Second electrical metrology components of the second electrical connection path are positioned within a second segment of the housing that is non-overlapping with the first segment of the housing.

A system that detects temperature and current events in a power grid is provided. The system includes a magnetic field sensor associated with an electric meter, a first temperature sensor associated with the electric meter, a plurality of bus bars connected to the electric meter and at least one temperature sensor uniquely associated with each of the plurality of bus bars. The system detects a magnetic field and compares the detected magnetic field to an expected magnetic field threshold or magnetic field threshold range to provide a magnetic field comparison result and the system detects a plurality of temperatures and compares the detected plurality of temperatures to expected temperature thresholds or temperature threshold ranges to provide a temperature comparison result. The system determines if a notification should be sent based on the magnetic field comparison result and/or the temperature comparison result.

An electric meter socket includes a first connection path within the electric meter socket to form a first electrical connection between a distributed energy resource (DER) meter and line voltage wirings from an electric distribution system. The electric meter socket further includes a second connection path within the electric meter socket to form a second electrical connection between the DER meter and neutral wires of the electric distribution system, a DER device, and a load. Additionally, the electric meter socket includes a third connection path within the electric meter socket to form a third electrical connection between the DER meter and output voltage wirings of the DER device. Further, the electric meter socket includes a DER connector positioned on a side of the electric meter socket to receive the output voltage wirings of the DER device and to electrically couple the output voltage wirings to the third connection path.

A metering device for monitoring power flow at a premises includes a metering module that measures power flow on powerlines at a premises and provides power flow data characterizing the power flow on the powerlines. The metering device also includes a communication module coupled to the metering module that transmits power flow data to a node on a meter network. The metering device further includes an energy storage element coupled to the metering module and the communication module. The energy storage element provides backup power to the metering module and the communication module in response to a voltage on the powerlines dropping below a first threshold for a time interval exceeding a second threshold, such that the metering module measures the power flow on the powerlines and provide the power flow data for a backup interval of time.

An integrated circuit and/or sensing circuitry assists in determining the thermal capacity available at a given and future time. In one aspect, the integrated circuit includes a number of channels connected to any number of components having differing thermal capacities. The integrated circuit may provide information relating to available thermal capacity on a per-channel basis as well as on a system-wide basis.

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.

Methods, systems, and computer program products for prioritizing errors in connectivity models of distribution networks are provided herein. A computer-implemented method includes collecting geo-spatial data arising from each of multiple transformers and multiple customer meters within an electric power distribution network; collecting load data arising from each of the customer meters within the electric power distribution network; assigning one of the transformers to each of the customer meters that is not presently assigned to one of the transformers according to a connectivity model for the distribution network, wherein said assigning is based on the collected multiple items of geo-spatial data and the collected load data; computing an error probability attributable to each of the transformers and the customer meters assigned thereto within the electric power distribution network based on multiple variables; and modifying an existing field inspection schedule corresponding to the electric power distribution network based on said computing.

This disclosure describes a miniaturized energy-monitoring device that can be powered through an Internet port, which also facilitates the programming the device and transmitting energy consumption data to a remote device for recording and analyzing.

The invention relates to a test block intended to be implanted in the circuit connecting an apparatus to be tested such as an electricity meter or a protective relay and a power source supplying the apparatus to be tested such as an intensity sensor and/or a voltage sensor. The test block comprises a base including a plurality of inner electric circuits capable of allowing the transmission of information from the power source to the apparatus to be tested and a protective cover intended to be assembled in a dismountable manner with the base in order to form a closed enclosure in which the inner electric circuits are housed. The base and the protective cover are configured such that the removal of the protective cover gives access to a receiving site delimited by the base and capable of receiving by plugging a test plug independent of the test block and electrically linked to a test equipment, in particular a voltmeter and/or an ammeter and/or a dummy current source. A test appliance is also described.

There is described a test block intended to be implanted in the circuit connecting an apparatus to be tested such as an electricity meter or a protective relay and a power source supplying the apparatus to be tested such as an intensity sensor and/or a voltage sensor, the test block comprising a base including a plurality of inner electric circuits capable of allowing the transmission of information from the power source to the apparatus to be tested and a protective cover intended to be removably assembled with the base in order to form a closed enclosure in which the inner electric circuits are housed. The base and the protective cover are configured such that the removal of the protective cover gives access to a receiving site delimited by the base and capable of receiving, by plugging, a test plug independent of the test block and electrically linked to a test equipment, in particular a voltmeter and/or an ammeter and/or a dummy current source. The base and the protective cover comprise electrically conductive elements linked to each other and configured so as to ensure a continuity and magnetic shielding closure such that the enclosure delimited by the base and the protective cover is a Faraday cage protecting the inner electric circuits relative to the magnetic fields external to the enclosure delimited by the base and the protective cover.