Distributed energy meter

By synchronizing the clock between the grid voltage sensing node and the current sensing node, the existing power monitoring system is solved in the complex installation and difficulty in expansion, and a simplified installation and dynamic expansion of the power monitoring system is realized, which can effectively monitor the power consumption of multiple branch circuits.

CN112114188BActive Publication Date: 2025-03-18SCHNEIDER ELECTRIC USA INC
4 Cites 0 Cited by

Patent Information

Application Number
CN202010568515.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2019-06-20
Filing Date
2020-06-19
Publication Date
2025-03-18
Estimated Expiration
2040-06-19

AI Technical Summary

Technical Problem

The existing power monitoring system is more complex in the installation process of multiple branch circuits and is difficult to dynamically expand to meet the needs of different environments.

Method used

The grid voltage sensing node and the current sensing node with independent clock are used to keep the sampling of voltage and current signals consistent by synchronizing the clock, thereby calculating the grid parameters. The system supports an analog-to-digital converter operating asynchronously, ensuring synchronization of current and voltage signals through resampling.

Benefits of technology

The installation process of the power monitoring system is simplified, the flexibility and scalability of the system is improved, and the power consumption of multiple branch circuits can be effectively monitored.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A system for measuring power grid parameters includes a power grid voltage sensing node having a first clock and a power grid current sensing node having a second clock. At least one of the voltage sensing node and the current sensing node synchronizes the first clock with the second clock. The voltage sensing node samples a voltage signal from a voltage transducer, and the current sensing node samples multiple current signals from corresponding current transducers. The voltage sensing node resamples the sampled voltage signal to determine a corresponding resampled voltage signal, and the current sensing node resamples each sampled current signal to determine a corresponding resampled current signal. The voltage sensing node transmits (1) the corresponding resampled voltage signal and (2) a voltage timestamp based on the synchronized first clock and associated with at least one sampled voltage signal to the current sensing node via a communication link. The system calculates the power grid parameter at the current sensing node based on the resampled voltage signal and the resampled current signal.
Need to check novelty before this filing date? Find Prior Art