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Department of Electrical
Engineering, IT and
Cybernetics
2015 – 2017
Simulation and Control
of Hydro Power Plant
Supervisor:
Bernt Lie
Valentyna Splavska
Background and objectives
Sustainable energy development implies
meeting the energy needs of the future without
jeopardizing the life quality of the planet. To
achieve this, sustainable energy sources need to
be renewable, and hydropower is one of themost
important renewable energy sources.
A hydropower plant, including the water way,
the energy transformation to electricity, and the
distribution grid, constitutes a complex dynamic
system which must be controlled to operate within
constraints. A hydropower plant can be divided into
subsystems where several of these subsystems are
of the same type; hence an object orientedmodeling
language will greatly simplify the process of setting
up amodel. As an example, various conduits (intake
race, penstock, etc.) essentially vary in geometry,
slope, friction, etc. The advantage of an object
oriented language is also obvious if we want to
study a system of many power plants. The equation
based modeling language Modelica supports
differential algebraic equations, and is a good choice
for modeling hydro power systems. OpenModelica
is one of several free simulation tools based on
Modelica; Dymola is an example of a commercial
tool. Commercial hydropower libraries are available
for Dymola, but a simple, free library is also under
development for OpenModelica (see Ph.D. study of
Liubomyr Vytvytskyi).
Main objectives of this work
•
Overview of hydropower system component
•
Development of simple models for each component
of the system
•
Particular emphasis onmechanistic turbinemodels
(Euler-equations) vs. efficiency look-up tables
•
Implementation of standard control system for
hydropower system
•
Composition of a complete hydropower model
•
Collecting hydropower case studies
•
Testing complete model (with, without surge tank,
mechanistic vs. table-look up turbine model, etc.)
for case studies
MASTER THESIS
Screenshot of hydroelectric power system using the
commercial Hydro Power Library from Modelon