Accuenergy (Canada) Inc.

The invention relates to a retainer clip, a retainer clip assembly, and a power meter mounting system for securely attaching a power meter to a panel. The retainer clip includes a main body with primary arms for panel engagement, secondary arms with release tabs having sawtooth-shaped protrusions for locking into corresponding indentations on a base, and guide tabs for alignment within guiding channels on the base. An arc-shaped protrusion on the retainer clip facilitates tool-free installation and positioning. The assembly incorporates a base with U-shaped channels, sawtooth-shaped indentations, a central slider tab, and directional pins to constrain the clip's movement along a predefined linear path. The system integrates the retainer clip assembly with a power meter, secured via a snap-fit mechanism, enabling robust, tool-free installation and removal through multi-point anchoring. This design ensures precise alignment, structural stability, and ease of operation for industrial and commercial applications.

This invention relates to a system and method for calibrating energy meters, designed to enhance the accuracy of electrical power measurements. The system incorporates a computing device with specialized calibration software, interfaced with multiple energy meters via a network switch. Each energy meter is equipped with a CPU and DSP, facilitating precise phase angle measurements. A configurable three-phase reference source, connected via power cables, supplies standard calibration signals to the meters. The DSP measures phase angles based on calibration commands triggered by control signals received by the CPU. These measurements are then transmitted to the computing device, which calculates necessary offset corrections. The corrections are subsequently communicated back to the CPU for adjustment of the energy meters' analog-to-digital converter settings, thereby ensuring the meters' outputs are accurately aligned with calibrated standards. This system provides a robust framework for reliable, high-precision energy meter calibration.

Provided is a DC meter for an electrical vehicle station. Specifically, the DC meter includes a first current input; a second current input; a voltage input; at least one analog-to-digital converter coupled to the first current input, the second current input and the voltage input, and configured for converting analog signal output from the current inputs and voltage input to digital data; at least one processing module coupled the at least one analog-to-digital converter, the at least one processing module is configured to: calculate the first current parameter through the first current input; calculate the second current parameter through the second current input; calculate the voltage parameter from the voltage input; compute a first energy consumption according to the first current parameter and the voltage parameter; compute a second energy consumption according to the second current parameter and the voltage parameter.

The invention presents an energy management system for power distribution networks. It features a hierarchical network with multi-level metering nodes, each measuring energy usage. Data from these nodes are transmitted via a secure communication gateway to a cloud-based platform, which includes servers for processing and storage. A key component is a machine learning algorithm within the server, designed to analyze energy data, normalize and transform inputs, and identify anomalies. The algorithm generates anomaly scores for each power meter, reflecting potential operational issues. A user interface, accessible through client devices, displays the processed data and anomaly scores. This allows users to effectively monitor and manage the energy distribution, making informed decisions for optimization. The system enhances the efficiency and reliability of power distribution, offering advanced analysis and user-friendly monitoring capabilities.

The present invention relates to a method and system for identifying the wiring configuration and voltage rating of an electricity meter. The method involves measuring various voltage values, including phase and line voltages, relative to a virtual neutral point. A controller calculates effective values and phase angles from the measured voltages and performs a multidimensional analysis, including voltage ratio analysis, phase angle analysis, and zero-sequence voltage analysis, to determine the wiring configuration, such as a three-phase three-wire or three-phase four-wire configuration. The method also incorporates a voltage spectrum analysis, utilizing a Fast Fourier Transform (FFT), to determine the voltage rating. Multiple iterations of the identification process are performed to confirm the accuracy of the results. The system includes a voltage measurement unit, a processor, and a memory for executing the method. The invention improves reliability in wiring configuration identification and enables anomaly detection.

A shunt resistor and power meter with integrated features thereof. The shunt resistor comprises a resistance element with recessed portions on opposite sides, reducing stress concentration and thermal expansion differences. First and second electrodes connect to the resistance element's ends, with measurement terminals attached. The recessed portions extend perpendicular to the resistor's length, enhancing performance. A power meter incorporates this shunt resistor, mounted on a support platform within a shunt part. The meter part computes energy consumption based on voltage signals from the shunt resistor. A protective cover encloses both parts. This design improves accuracy, thermal management, and adaptability in current measurement applications, particularly suitable for high-current scenarios like electric vehicle charging stations.

A shunt resistor for current measurement comprises a resistance element and a pair of electrodes connected to its ends, featuring recessed side surfaces and L-shaped openings for temperature drift mitigation. Voltage detection portions integrated into the electrodes ensure precise alignment and reduced thermal stress. Threaded bolts serve as input and output current connection points. A method for manufacturing the shunt resistor involves forming recessed portions, incorporating L-shaped openings, and integrating voltage detection portions. A current detection device includes the shunt resistor, a DIN rail-affixed base, bus bar openings, and a cable to transfer voltage to a power meter.

A system for determining the location of a disturbance event in a power system. The system includes a power feed bus for supplying electrical signal and an Intelligent Electronic Device coupled to the power feed bus. The Intelligent Electronic Device determines the single-phase direction of the disturbance event according to the changes between the average pre-event power, average pre-event current and average pre-event voltage and the average post-event power, average post-event current and average post-event voltage.

The present invention relates to a system for calibrating a current transformer, aimed at enhancing the accuracy of current measurements. The system comprises a current transformer equipped with a non-volatile memory, configured to store a unique identifying serial number. In conjunction with this, a power meter is set up to communicate with the current transformer. The power meter is fitted with a reading module designed to read the unique identifying serial number from the non-volatile memory of the current transformer. The system also includes a server, connected to communicate with the power meter. The server possesses a database that stores calibration data associated with the unique identifying serial numbers. The server is programmed to receive the unique identifying serial number from the power meter and transmit the corresponding calibration data back to the power meter, enabling precise calibration of the current transformer.

This invention relates to a system and method for calibrating energy meters, designed to enhance the accuracy of electrical power measurements. The system incorporates a computing device with specialized calibration software, interfaced with multiple energy meters via a network switch. Each energy meter is equipped with a CPU and DSP, facilitating precise phase angle measurements. A configurable three-phase reference source, connected via power cables, supplies standard calibration signals to the meters. The DSP measures phase angles based on calibration commands triggered by control signals received by the CPU. These measurements are then transmitted to the computing device, which calculates necessary offset corrections. The corrections are subsequently communicated back to the CPU for adjustment of the energy meters' analog-to-digital converter settings, thereby ensuring the meters' outputs are accurately aligned with calibrated standards. This system provides a robust framework for reliable, high-precision energy meter calibration.