Advertisement

Turbogenerator Foundation Vibrations in a New Power Plant

  • E. Goldfracht
  • R. Rouen
Conference paper
Part of the International Centre for Mechanical Sciences book series (CISM, volume 352)

Abstract

During the first running year of two new 550 MW turbogenerators in Rutenberg Power Station, in Ashkelon, Israel, vibration problems were encountered by the foundation and the generator. A full program for analysis of foundation vibration was prepared, that included displacement measurements, calculations of foundation eigenvalues, modal shapes and dynamic amplitudes by two finite element models, and modal test of the system. The main conclusions from the test program are:
  • The natural vibration mode of the turbogenerator foundation at 49.6 Hz has a great influence on the dynamic response of the system at the operating speed of 50 Hz

  • The concrete modulus of elasticity, which varies by as much as 40%, is a dominant factor in the determination of foundation eigenfrequencies.

However, the calculated additional stress of the foundation concrete is small, less than 2 kg/cm2, and no damage it is to be expected at the service frequency.

Keywords

Foundation Vibration Vibration Measurement Transverse Beam Service Frequency Longitudinal Beam 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Wien 1994

Authors and Affiliations

  • E. Goldfracht
    • 1
  • R. Rouen
    • 1
  1. 1.Israel Electric Corporation Ltd.HaifaIsrael

Personalised recommendations