Research Article
Application Research of the Sparse Representation of Eigenvector on the PD Positioning in the Transformer Oil
Table 2
The positioning results based on sparse representation of the eigenvector.
| Group | The position of the PD source/cm | Theoretical angle/(°) | Direction angle/(°) | The result of the three-array cross positioning/cm | The error/cm |
| 1 | | | | | 4.5 | | | | | | |
| 2 | | | | | 4.7 | | | | | | |
| 3 | | | | | 4.5 | | | | | | |
| 4 | | | | | 4.4 | | | | | | |
| 5 | | | | | 4.5 | | | | | | |
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