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UBC Theses and Dissertations

Optimum turbine gate operation to minimize speed change in an hydraulic turbine Bell, Peter Warren Wentworth

Abstract

This thesis examines the influence of different gate operation curves on the surplus or deficiency of energy input to a hydraulic turbine accompanying a sudden change of load on the turbine. A general solution to the problem is obtained by evaluating the energy input to the penstock and the energy conversion within the penstock during transient conditions. The results show that for given maximum pressure rise or drop, a considerable reduction in the surplus or deficiency of energy input to the turbine can be obtained by use of a suitable gate operation curve. At the same time it is possible to reduce the hydraulic oscillations in the system.

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