Performance and diagnostic tests on hydraulic gensets in Polish Hydro Power Plants

• Autorzy: Adamkowski A. , Steller J.
• Języki publikacji: EN

Abstrakty

EN

The paper summarises experience accumulated within the last decade resulting from an intense collaboration of the Institute of Fluid-Flow Machinery of the Polish Academy of Sciences with the Polish hydro power industry. The scope and aims of this activity are characterised on the background of extremely low percentage of utilised hydroelectric potential of Poland and a lack of significant investments in this field. Qualitative changes in the measurement and diagnostic techniques having taken place with the advent of digital data acquisition and processing systems are stressed. Experience reffering to the discharge measurement, by means of various kinds of current-meter, pressure-time and Winter-Kennedy methods are discussed. Possibility to correct roughly the cam dependence of double-regulated machines based on the measurement of pressure fluctuations in the draft tube is confirmed. Examples of utilising diagnostic signals for identification of the sources and assessment of the level of exessive loading to the guide bearing of a hydraulic turbine are discussed. Recent work on cavitation diagnostics is illustrated by historiograms of cavitation pulses taken from the draft tubes of several Kaplan turbines. Finally, case studies concerning some specific performance and dynamic features of Kaplan turbines and Francis-type pump turbines are discussed.

PL

Artykuł stanowi podsumowanie doświadczeń wynikających z prac prowadzonych w ostatnim dziesięcioleciu przez Instytut Maszyn Przepływowych PAN na rzecz polskiej energetyki wodnej. Na wstępie scharakteryzowano cele tych prac w kontekście nadzwyczaj niskiego wykorzystania dostępnych zasobów hydroenergetycznych kraju oraz braku znaczących inwestycji w tej dziedzinie. Następnie wskazano na jakościowe zmiany w technice pomiarowej i diagnostycznej związane z wprowadzeniem cyfrowej akwizycji i obróbki danych. Omówiono doświadczenia własne związane z pomiarem natężenia przepływu za pomocą różnych odmian metody młynkowej, metody Gibsona oraz metody Winter-Kennedy'ego. Potwierdzono możliwość zgubnej korekty zależności kombinatorowej maszyn o podwójnej regulacji w oparciu o pomiar pulsacji ciśnienia w rurze ssącej. Wskazano przykłady wykorzystania sygnałów diagnostycznych do identyfikacji przyczyn i oceny poziomu nadmiernych obciążeń łożyska prowadzącego turbiny. Poinformowano o pracach nad diagnostyką zjawiska kawitacji. Na zakończeniu podano przykłady zastosowania wybranych technik pomiarowych do identyfikacji szczególnych własności eksploatacyjnych turbin Kaplana i maszyn odwracalnych typu Francisa.

Słowa kluczowe

EN

hydro power industry; Polish Hydro Power Plants

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 1999
• Tom: nr 105
• Strony: 47--66
• Opis fizyczny: Bibliogr. 37 poz., il., wykr.

Twórcy

autor

Adamkowski A.

• Institute of Fluid-Flow Machinery, Polish Academy of Sciences

autor

Steller J.

• Institute of Fluid-Flow Machinery, Polish Academy of Sciences

Bibliografia

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