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Mechanical Strength of MV Ship-switchgear During Fault Arc

Abstrakt

In the paper the analysis of pressure stressed in enclosure during fault arc inside switchgear is pre-sented as well. There is introduced the method based on determining stresses which are sum of tensile stresses (membrane) and deflection stresses. For tensile stresses nalysis the energy method, for unrestrainedly supported rectangular plate, was used. In the further part of the paper, the calculations and measurements results of enclosure stresses were shown. Dimensions of analyzed enclosure were 0,48 x 0,52 m. Also oscillogram record from laboratory tests was given in further part of the paper. There were demonstrated the results of calculations of maximum stresses in enclosure of analyzed cable compartment of marine switchgear during fault arc. In the presented paper the calculation method of pressure and temperature of gases inside MV marine switchgear during fault arc was presented. Simultaneous equation (1) gives thermodynamic model of processes concurrent to fault arcs inside air insulated switchgear. Simultaneous equation (1) enables calculation of pressure and temperature based on average arc power. Above mentioned model is particularly useful for analysis of pressure and temperature in switchgears equipped with slots or overpressure reducing canals. Calculated, according to (1), temperature is average temperature in area encompassed by fault arc. Formulating it more strictly; that area is defined by product of volume V and coefficient c. The method does not count a spatiotemporal distributions of temperature and pressure in total volume of the compartment.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Opublikowano w:
Acta Energetica strony 98 - 103,
ISSN: 2300-3022
Język:
angielski
Rok wydania:
2015
Opis bibliograficzny:
Partyka R., Kowalak D.: Mechanical Strength of MV Ship-switchgear During Fault Arc// Acta Energetica. -., nr. 1/22 (2015), s.98-103
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.12736/issn.2300-3022.2015107
Weryfikacja:
Politechnika Gdańska

wyświetlono 26 razy

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