Sinaga, Herman Halomoan and Phung, Toan and Blackburn, Trevor (2012) Partial Discharge Localization in Transformers Using Monopole and Log-Spiral UHF Sensors. IEEE 10th International Conference on the Properties and Applications of Dielectric Materials. ISSN 2160-9241

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Abstract

The location of a partial discharge (PD) source inside a transformer can be determined from the time differences of arrival (TDOA) between signals that are captured by an array of UHF sensors. From these, the PD location can be found by geometric triangulation which involves solving a set of non-linear equations. This can be achieved using an efficient software realization of the maximum-likelihood estimator. The recorded PD waveforms are affected by the type of sensor used to capture PD signals. In this paper, the accuracy of the PD localization using different sensors is investigated. Two types of sensor, i. e. short monopole and log-spiral are used to capture electromagnetic waves emitted from a PD source. To calculate the TDOA, two methods: first peak and cross-correlation were applied. The localization result shows the monopole sensor produces higher accuracy than the logspiral and the first peak method achieves better result than the cross-correlation method.

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 07:26
Last Modified:	11 Apr 2023 07:26
URI:	http://repository.lppm.unila.ac.id/id/eprint/50222

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