access icon openaccess Analysis of partial discharge signals from generator propagation in excitation transformer by EMTP

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 11/10/2019, Accepted 19/11/2019, Published 13/01/2020

This study presents the simulation experiment of the partial discharge (PD) signal transmitted by the generator in the excitation transformer. Firstly, voltage over the low-voltage winding of the excitation transformer was displayed. The degradation process of the insulation and the PD online monitoring method were described. Electrical circuit was established by the electro-magnetic transients program (EMTP) software, which was simulated PD signal from generator propagation in the excitation transformer. Results show that simulation model was right and benefited to fault diagnosis of PD signals in the excitation transformer.

Inspec keywords: computerised instrumentation; power transformers; partial discharge measurement; power engineering computing; EMTP; signal processing

Other keywords: low-voltage winding; PD signal analysis; EMTP software; PD online monitoring method; partial discharge signal analysis; excitation transformer; fault diagnosis; generator propagation; electrical circuit

Subjects: Dielectric breakdown and discharges; Computerised instrumentation; Computerised instrumentation; Charge measurement; Electrical instruments and techniques; Signal processing and detection; Power engineering computing; Digital signal processing; Transformers and reactors

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