Full
Outline
In order to address the shortcomings of existing detection methods, which are unable to effectively capture the complex nonlinear features of photovolatic time series data, a distributed photovolatic anomaly data detection method considering time series clustering is proposed. This method is designed to facilitate the accurate identification and location of abnormal data. Firstly, the similarity of photovolatic power plant time series data is calculated using the dynamic time warping (DTW) method, and a similarity matrix is constructed. Subsequently, spectral clustering is applied to obtain the feature matrix, and the intrinsic connection between photovolatic data points in the feature matrix is analysed. This enables similar photovolatic data to be clustered into a collection. Then, a joint detection model of sub-isolated forest is established based on the collection of photovolatic data clusters. The abnormal score geatures are obtained using the local outlier factor algorithm. The features are used as inputs to the joint detection model to obtain the anomaly score matrix of photovolatic data for each similar clustering set. Finally, the anomaly score matrix is selected and reconstructed, and the anomalies of photovolatic data are identified and located after decision analysis. The experimental results demonstrate that the method is an effective means of capturing photovolatic anomaly data. The precision and recall rates of extracted anomaly samples reach 0.9, thereby enhancing the accuracy of photovolatic anomaly data identification.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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