Czasopismo | PRZEGLĄD ELEKTROTECHNICZNY | Rocznik 2016 - zeszyt 10

Ultraczułe przetworniki emisji akustycznej zoptymalizowane do monitoringu wyładowań niezupełnych w transformatorach

10.15199/48.2016.10.03

Wojciech SIKORSKI

nr katalogowy: 101190
10.15199/48.2016.10.03

W artykule omówiono prototypowe przetworniki emisji akustycznej, które zostały zoptymalizowane do detekcji i monitoringu wyładowań niezupełnych (wnz) w transformatorach energetycznych. Ich wysoka czułość została potwierdzona w badaniach modelowych wnz, w których dla porównania zastosowano popularne przetworniki komercyjne. Ponadto w artykule omówiono kwestię charakterystycznych częstotliwości sygnałów emisji akustycznej generowanych przez wysokoenergetyczne formy wyładowań niezupełnych (ślizgowych, międzyzwojowych, powierzchniowych, w kanale olejowym). Abstract. The paper presents prototype acoustic emission transducers, which were optimized for detection and monitoring of partial discharges (PDs) in power transformers. Their high sensitivity was proven in PD model research, in which popular commercial transducers were used for comparison. Moreover, the issue of characteristic frequencies of acoustic emission signals generated by high energy forms of partial discharges (creeping, turn-to-turn, surface, in oil-duct) was discussed in the paper. (Ultra-sensitive acoustic emission transducers for partial discharge monitoring in power transformers). Słowa kluczowe: wyładowania niezupełne, przetwornik piezoelektryczny, emisja akustyczna, monitoring transformatora energetycznego. Keywords: partial discharge, piezoelectric transducer, acoustic emission, power transformer online monitoring. Wstęp Prace badawczo-rozwojowe w dziedzinie diagnostyki transformatorów prowadzone obecnie przez liczne ośrodki naukowe i przemysłowe koncentrują się głównie na takich aspektach jak: (i) wdrażanie nowych, innowacyjnych technik pomiarowych, (ii) doskonalenie oraz poprawa skuteczności, niezawodności i wiarygodności powszechnie stosowanych, standaryzowanych technik pomiarowych, jak np. analiza gazów rozpuszczonych w oleju (DGA), (iii) zastosowanie nowoczesnych metod cyfrowego przetwarzania sygnałów oraz (iv) opracowywanie i wdrażanie zaawansowanych technologi[...]

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