Autor: Polak, F. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Prototype measurement system for localization of partial discharges sources – microphone array
Autorzy:: Polak, F.
Sikorski, W.
Siodła, K.
Powiązania:: https://bibliotekanauki.pl/articles/97228.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: partial discharges (PDs)
PD localization
sensor array
microphone array
beamforming
direction-of-arrival (DOA)
Opis:: This paper presents a prototype measurement system, that will be used for localization of acoustic emission sources originating from partial discharges (PD). It is based on sensor arrays technology and direction of arrival estimation algorithms. Acoustic signals will be received with a universal linear array (ULA) of sensors, wherein the sensory elements are microphones operating in the audible frequency range. For the estimation of the direction of arrival of these signals conventional beamforming algorithm is used which has also been described theoretically. Ultimately, the system will be used to determine the direction of arrival of the acoustic signal generated by the insulation defect, which is corona discharge.
Źródło:: Computer Applications in Electrical Engineering; 2015, 13; 209-219
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Prototyping of UHF antennas using simulation software
Autorzy:: Polak, F.
Sikorski, W.
Siodła, K.
Powiązania:: https://bibliotekanauki.pl/articles/97315.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: partial discharges
UHF antenna
antenna design
simulations
Opis:: The method of ultra high frequency is being increasingly applied in the power transformer diagnostics. Using the probe (antenna) mounted inside the transformer tank it is possible to detect partial discharges occurring in defects of high–voltage insulation system. Such probes must be designed and optimized on several factors, such as frequency band, directivity, or the geometrical design etc. This paper presents parameters of two types of antennas (discone and microstrip patch) obtained through simulation. Calculations and simulations results will provide basis to comnstruct the prototypes of the antennas, which will eventually find application in the measurement system used for localisation of partial discharges inside power transformers.
Źródło:: Computer Applications in Electrical Engineering; 2016, 14; 168-176
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Localisation of partial discharges sources using acoustic transducers arrays
Autorzy:: Polak, F.
Sikorski, W.
Siodła, K.
Powiązania:: https://bibliotekanauki.pl/articles/97543.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: partial discharge
Signal Source Localisation
Transducer Array
Direction of Arrival (DOA) Estimation
music
Opis:: This paper concerns the issue of the partial discharge (PD) sources location using acoustic emission transducer arrays technique and the high resolution direction of arrival estimation technology. In addition to the theoretical assumptions of both techniques, the simulation result, in which an uniform linear array (ULA) was used for registration of the acoustic emission signals generated by defects in power transformer insulation system were shown. To estimate the direction of arrival (DOA) of acoustic signals, that propagate from the discharge-generating defect to the transducer array installed on transformer tank, Multiple Signal Classification (MUSIC) algorithm was chosen. With the ability to locate multisource discharges (even at very low signal-to-noise ratio - SNR), the adopted solution has advantages over conventional techniques.
Źródło:: Computer Applications in Electrical Engineering; 2014, 12; 237-245
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

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