Assessment of hydroturbine models for power-systems studies

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Assessment of hydroturbine models for power-systems studies

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© The Institution of Electrical Engineers
Published

A method is presented for the accurate simulation of the hydraulic and mechanical aspects of a hydroelectric power-generating system. The representation is suitable for incorporation into an overall power-system model. In the development of the detailed model, the hydraulic equations are solved by the method of characteristics, and the hydromachine is represented by its performance curves. Linear turbine transfer functions are subsequently derived from the detailed model using the method of fast Fourier transforms. Comparisons are made between the formulations, and these show that the range of applicability of the approximate linear models is limited. Representative results from two practical systems are collected together to illustrate the use of the models in power-system studies.

Inspec keywords: hydraulic turbines; mechanical engineering computing; digital simulation; hydroelectric power stations; fast Fourier transforms

Other keywords: fast Fourier transforms; hydroelectric power-generating system; transfer functions; method of characteristics; linear models; performance curves; power-systems; hydraulic equations; hydroturbine models

Subjects: Hydroelectric power stations and plants; Power engineering computing; Computing in other engineering fields

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