A Harmonic Analysis and Early Warning Method and System Based on Real-time Electricity Meter Monitoring Data

CN120971807BActive Publication Date: 2026-05-26HUNAN TONGHESHENG TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN TONGHESHENG TECHNOLOGY CO LTD
Filing Date
2024-12-10
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing harmonic monitoring systems lack the ability to detect harmonic resonances in real time, making it impossible to identify and warn of them in advance. This results in significant resonance risks for power systems, which are particularly difficult to predict and control in long-distance transmission lines and industrial power grids.

Method used

By integrating sensor groups into the electricity meter to collect voltage, current, frequency and energy consumption data in real time, the data is preprocessed to calculate the harmonic resonance frequency status and risk, and a warning strategy is generated based on the risk assessment threshold, and corresponding response measures are implemented.

Benefits of technology

It enables precise control of harmonic risks, improves the stability and safety of the power system, avoids equipment damage and energy waste, and ensures long-term tracking and management of the system.

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Abstract

This invention discloses a harmonic analysis and early warning method and system based on real-time monitoring data of electricity meters, relating to the field of electricity meter detection technology. When the system is running, it constructs a harmonic detection data vector NEHMDV to capture potential harmonic resonance problems in the power system. After processing by the data preprocessing module, the accuracy and consistency of the data are ensured. The harmonic risk calculation module further calculates the real-time harmonic resonance frequency Rf(t) and harmonic resonance risk Pr(t), and integrates them into a risk factor vector EHRFV(t). Based on this, the harmonic risk assessment module can quickly fit the harmonic risk assessment index EHRAI(t) and match it with the preset harmonic risk assessment threshold XZ to generate a targeted risk assessment matching strategy, effectively preventing potential harmonic risks and minimizing serious consequences such as equipment damage and energy waste caused by harmonic problems.
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