Sinaga, Herman Halomoan (2011) UHF Sensors Sensitivity In Detecting Partial Discharge Sources In A Transformer. International Symposium on High Voltage Engineering ; 17; 2011; Hannover ISH ; 17; 2011; Hannover. ISSN 9783800733644
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Abstract
Partial discharge (PD) detection in the ultra high frequency (UHF) range can offer better immunity against electromagnetic disturbances and higher signal-to-noise ratio. However, the UHF method cannot be calibrated as per IEC 60270 to determine the equivalent apparent charge from the output signal of the UHF sensors. As a substitution to the calibration, sensitivity verification is proposed by the CIGRE WC 15.03. The sensitivity of the UHF measuring method is very dependent on the type of PD source, the construction of the transformer and the sensor types. In this paper, 4 different sensors are applied to capture PD signals from two different types of PD source (void and floating metal) to check sensors sensitivity. The effect of a physical barrier between sensor and PD source is also investigated. The total energy and magnitude are extracted from the full-span and zero-span spectra. For similar PD level, the total energy of the full-span spectra, with the barrier at varying distance from the sensor, shows random values. The total energy and magnitude of zero-span spectra show linear correlation to the PD level if the barrier is kept at the same position.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Fakultas Teknik (FT) > Prodi Teknik Elektro |
| Depositing User: | DR. Herman H Sinaga |
| Date Deposited: | 11 Apr 2023 00:50 |
| Last Modified: | 11 Apr 2023 00:50 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/50137 |
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