H. R. Mirzaei

TL;DR: In this paper, a new design of UHF antennas is introduced which is suitable to be used on the transformers in the HV laboratories of the manufacturers to ensure the applicability of the new antenna, experimental UHF PD measurements are carried out on a transformer tank model as well as on real power transformers.

TL;DR: In this article, the authors proposed a method based on comparing the differences in the arrival times, to antennas in the transformer, of EM waves emitted from the PD source, and factoring in the influence of the transformer active part on the EM wave propagation.

TL;DR: In this article, an Artificial Neural Network (ANN) was used to localize turn-to-turn faults in transformers windings, where the frequency response of a transformer winding in both healthy and faulty conditions was measured using the Low Voltage Impulse (LVI) test.

TL;DR: In this paper, the detection and measurement of partial discharge (PD) is a well-known method for evaluating the insulation performance of power transformers, and the apparent charge is measured in a frequency range below 1 MHz using an electrical circuit which quantifies only a portion of the discharge energy conducted to the PD detector through the conductors.

TL;DR: In this paper, a modified method based on using multi conductor transmission line model (MTLM) of transformer winding is used as PD localization method and to increase the reliability of the results, a method based upon using calibration pulses is proposed.