Title:
HARMONIC AND INTER-HARMONIC DETECTION METHOD FOR POWER GRID
Document Type and Number:
WIPO Patent Application WO/2024/087237
Kind Code:
A1
Abstract:
A harmonic and inter-harmonic detection method for a power grid, comprising: first sampling a signal to be detected multiple times, and detecting the frequency by using a fast TLS-ESPRIT algorithm; then analyzing a detection result on the basis of a simplified K-means clustering algorithm, and extracting a real harmonic component; and finally performing windowing interpolation calculation on the signal in light of a second-order Blackman-Harris self-convolution window, and accurately estimating amplitude and phase information of the signal, thereby implementing high-precision detection of harmonics and inter-harmonics. Simulation and experiment results show that compared with conventional methods, this method has higher harmonic and inter-harmonic detection precision and stronger anti-interference capability.
Inventors:
CHEN RONG (CN)
YANG YONG (CN)
WANG YOUCHENG (CN)
YANG YONG (CN)
WANG YOUCHENG (CN)
Application Number:
PCT/CN2022/128583
Publication Date:
May 02, 2024
Filing Date:
October 31, 2022
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
G01R23/16; G06F17/15; G06F17/16
Domestic Patent References:
| WO2020049717A1 | 2020-03-12 |
Foreign References:
| CN109541306A | 2019-03-29 | |||
| CN103743949A | 2014-04-23 | |||
| CN105137185A | 2015-12-09 | |||
| CN101701982A | 2010-05-05 | |||
| CN103308766A | 2013-09-18 | |||
| CN106872777A | 2017-06-20 | |||
| CN109030941A | 2018-12-18 | |||
| CN110095650A | 2019-08-06 | |||
| CN113032716A | 2021-06-25 |
Attorney, Agent or Firm:
SUZHOU JIANSHAN INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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