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One of the two hydro turbine-generator sets in small hydropower plant has become inoperable due to generator stator winding failure. Considering the age of the plant, together with generator repairs, more comprehensive plant refurbishment options have been analysed. The optimal solution is chosen, one that provides improved reliability, increased electricity production with best financial and economic...
This paper presents a new control method for a super-turbo generating (STG) system using an accurate ship-plant system model that ascertains startup characteristics. The STG system is a waste heat recovery type of generation system that makes use of exhaust gas from the main shipboard diesel engines. With STG systems, however, control during startup is not entirely clear. Startup characteristics from...
The paper presents the results of studying the specific problems that occurred during the exploitation of two 42 MVA bulb generators. The work focuses particularly on two groups of problems which were more pronounced on only one of the two hydropower units, and these are increased vibrations of the hydropower unit and electromechanical oscillations in the stationary and transition states, which significantly...
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