A Quantification Method for Supraharmonic Emissions Based on Outlier Detection Algorithms
Based on outlier detection algorithms, a feasible quantification method for supraharmonic emission signals is presented. It is designed to tackle the requirements of high-resolution and low data volume simultaneously in the frequency domain. The proposed method was developed from the skewed distribu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/19/6404 |
| _version_ | 1797516580265918464 |
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| author | Hui Zhou Zesen Gui Jiang Zhang Qun Zhou Xueshan Liu Xiaoyang Ma |
| author_facet | Hui Zhou Zesen Gui Jiang Zhang Qun Zhou Xueshan Liu Xiaoyang Ma |
| author_sort | Hui Zhou |
| collection | DOAJ |
| description | Based on outlier detection algorithms, a feasible quantification method for supraharmonic emission signals is presented. It is designed to tackle the requirements of high-resolution and low data volume simultaneously in the frequency domain. The proposed method was developed from the skewed distribution data model and the self-tuning parameters of density-based spatial clustering of applications with noise (DBSCAN) algorithm. Specifically, the data distribution of the supraharmonic band was analyzed first by the Jarque–Bera test. The threshold was determined based on the distribution model to filter out noise. Subsequently, the DBSCAN clustering algorithm parameters were adjusted automatically, according to the <i>k</i>-dist curve slope variation and the dichotomy parameter seeking algorithm, followed by the clustering. The supraharmonic emission points were analyzed as outliers. Finally, simulated and experimental data were applied to verify the effectiveness of the proposed method. On the basis of the detection results, a spectrum with the same resolution as the original spectrum was obtained. The amount of data declined by more than three orders of magnitude compared to the original spectrum. The presented method will benefit the analysis of quantification for the amplitude and frequency of supraharmonic emissions. |
| first_indexed | 2024-03-10T07:02:53Z |
| format | Article |
| id | doaj.art-7258aa9699f543fe85e846d4c679d338 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T07:02:53Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-7258aa9699f543fe85e846d4c679d3382023-11-22T16:03:53ZengMDPI AGEnergies1996-10732021-10-011419640410.3390/en14196404A Quantification Method for Supraharmonic Emissions Based on Outlier Detection AlgorithmsHui Zhou0Zesen Gui1Jiang Zhang2Qun Zhou3Xueshan Liu4Xiaoyang Ma5College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaBased on outlier detection algorithms, a feasible quantification method for supraharmonic emission signals is presented. It is designed to tackle the requirements of high-resolution and low data volume simultaneously in the frequency domain. The proposed method was developed from the skewed distribution data model and the self-tuning parameters of density-based spatial clustering of applications with noise (DBSCAN) algorithm. Specifically, the data distribution of the supraharmonic band was analyzed first by the Jarque–Bera test. The threshold was determined based on the distribution model to filter out noise. Subsequently, the DBSCAN clustering algorithm parameters were adjusted automatically, according to the <i>k</i>-dist curve slope variation and the dichotomy parameter seeking algorithm, followed by the clustering. The supraharmonic emission points were analyzed as outliers. Finally, simulated and experimental data were applied to verify the effectiveness of the proposed method. On the basis of the detection results, a spectrum with the same resolution as the original spectrum was obtained. The amount of data declined by more than three orders of magnitude compared to the original spectrum. The presented method will benefit the analysis of quantification for the amplitude and frequency of supraharmonic emissions.https://www.mdpi.com/1996-1073/14/19/6404supraharmonicoutlier detectiondata distributionDBSCANclustering algorithm |
| spellingShingle | Hui Zhou Zesen Gui Jiang Zhang Qun Zhou Xueshan Liu Xiaoyang Ma A Quantification Method for Supraharmonic Emissions Based on Outlier Detection Algorithms Energies supraharmonic outlier detection data distribution DBSCAN clustering algorithm |
| title | A Quantification Method for Supraharmonic Emissions Based on Outlier Detection Algorithms |
| title_full | A Quantification Method for Supraharmonic Emissions Based on Outlier Detection Algorithms |
| title_fullStr | A Quantification Method for Supraharmonic Emissions Based on Outlier Detection Algorithms |
| title_full_unstemmed | A Quantification Method for Supraharmonic Emissions Based on Outlier Detection Algorithms |
| title_short | A Quantification Method for Supraharmonic Emissions Based on Outlier Detection Algorithms |
| title_sort | quantification method for supraharmonic emissions based on outlier detection algorithms |
| topic | supraharmonic outlier detection data distribution DBSCAN clustering algorithm |
| url | https://www.mdpi.com/1996-1073/14/19/6404 |
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