Walmsley, Nigel (1986) The numerical representation of pump-turbine performance characteristics. PhD thesis, University of Warwick.

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Abstract

This thesis investigates the hydraulic transient analysis of hydro-power plants with particular emphasis being placed on the turbine and
pump-turbine boundary conditions. A lack of suitable data, in the form of
the machine performance characteristics, during the early stages of a
hydro-power station's development led to the investigation of alternative
sources of performance characteristics, not based on the testing of a
hydraulically similar model turbine. Two methods of obtaining turbine
performance characteristics were developed, one based on the published
performance characteristics of typical reaction turbines and the second
based on performance characteristics from a turbine of similar specific
speed.
The problems particular to the unit parameter representation of
four quadrant reversible pump-turbine performance characteristics for use in
hydraulic transient analyses were investigated. A review of alternative
forms of representation led to the solution of the pump-turbine boundary
based on a modified unit parameter representation. The method reduces the
multi-variable problem of the pump-turbine boundary condition to that of
a single variable. The solution algorithm is equally successful for use
with standard turbines.
A computer program for the analysis of hydraulic transients in hydro-power plants was developed and comparisons with site recordings, taken
during a full load rejection at a typical pumped storage scheme, made
in order to verify the operation of the computer program. Further simulations
demonstrate the combined boundary condition of turbine and relief valve.

Item Type:	Thesis or Dissertation (PhD)
Subjects:	Q Science > QA Mathematics T Technology > TJ Mechanical engineering and machinery
Library of Congress Subject Headings (LCSH):	Hydroelectric power plants, Hydraulic turbines -- Performance, Hydraulic turbines -- Mathematical models, Hydraulic turbines -- Computer simulation
Official Date:	August 1986
Dates:	Date Event August 1986 Submitted
Institution:	University of Warwick
Theses Department:	Department of Biological Sciences
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Boldy, A. P. (Adrian P.)
Sponsors:	Science and Engineering Research Council (Great Britain) (SERC)
Extent:	xi, 132, 58 p.
Language:	eng

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