Electric energy quality control method under distributed energy access

By deploying high-sensitivity sensors and intelligent communication links at distributed energy access points, collecting and transmitting power parameter data in real time, and using multi-core processors and intelligent analysis software for power quality analysis and diagnosis, and generating collaborative control strategies, the grid power quality problems caused by distributed energy are solved, and the rapid recovery and dynamic balance of grid power quality are achieved.

CN119695935APending Publication Date: 2025-03-25ZHEJIANG HONGXI INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202411983581.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The intermittentity, volatility and the dispersion of distributed energy sources lead to grid power quality problems, including voltage and frequency fluctuations, harmonic distortion, etc., which affects the normal operation of industrial production and power equipment.

Method used

High sensitivity and stability sensors are deployed at distributed energy access points to collect power parameter data in real time, and transmit data to the power quality control center through wired and wireless hybrid communication links with automatic error correction and anti-interference capabilities. The center is equipped with multi-core processors and intelligent analysis software. It uses fast Fourier transform, wavelet transform and deep learning algorithms to analyze and diagnose power quality in real time, generate collaborative control strategies, and achieve rapid recovery and dynamic balance of power grid power quality through static reactive power compensation devices, active power filters and energy storage systems.

Benefits of technology

It realizes accurate data collection and real-time data transmission of distributed energy access points, quickly identify and diagnose abnormal power quality, generate efficient collaborative control strategies, ensure the stability and reliability of power grid power quality, reduce the probability of equipment failure and downtime, and improve energy utilization and distribution efficiency.

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Abstract

The invention relates to the technical field of electric energy quality control, and discloses an electric energy quality control method under distributed energy access, which comprises the following steps: S1, data acquisition and transmission; high-performance sensors are deployed at key nodes, sensitivity is high, stability is high, and it is ensured that data are sent to a management and control center in real time in a low-delay and low-packet-loss mode. And S2, analysis and diagnosis. The control center multi-core processor operates software fusing fast Fourier transform, wavelet transform and a deep learning algorithm, the electric energy quality is judged according to a high-standard threshold value, and an abnormal source is intelligently traced. And S3, cooperative control. When the electric energy quality does not reach the standard, the control center directs the SVG to output reactive current in a millisecond level according to a strategy library, the APF filters harmonic waves, the high-quality electric energy quality is cooperatively recovered, and energy and a power grid are balanced. The method has the advantages that data acquisition is accurate and efficient, a communication link is stable and reliable, analysis and diagnosis are intelligent and agile, and cooperative control is fine and flexible.
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