SEWA Combined Cycle Power Plant

 Structural Dynamics

Dynamic analysis of the SEWA Combined Cycle

Tecnicas Reunidas, a Spanish engineering firm which has designed and constructed over 1000 industrial plants in over 50 countries, has once again enlisted Dynamis to perform the vibration analysis of all of the General Electric steam and gas turbine pedestals for a new combined cycle power plant. The new power plant will be developed, built and operated by Japan’s Sumitomo Corporation, General Electric in partnership with Sharjah Electric and Water Authority (SEWA) in Hamriyah, UAE, resulting in Sharjah’s first independent combined cycle power plant. The facility will consist of three GE 9HA.01 gas turbines, the world’s largest, most efficient heavy-duty gas turbine, along with six generators and three steam turbines. Total power output will be more than 1,800 MW and will provide electricity to the Sharjah Emirate.

DYNAMIS mission

The turbine-generator foundation is a complex engineering structure.  Dynamic behaviors of the foundation play an important role in providing normal operating conditions for the supported turbo-machine. Dynamis has performed a vibrational analysis that consists of evaluating the dynamic flexibilities at each bearing position for vertical and horizontal direction, calculated for the frequency range from the 90% to 110% of the nominal speed 50Hz.  Such calculations were performed in the frequency domain with a new approach that allows to take the frequency-dependent character of the soil reaction into account.

With this expertise, Dynamis has provided Tecnicas Reunidas with an optimal solution for the pedestals.