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Department of Energy and
Process Engineering
Spring 2017
Modeling and
Simulation of a
Hydropower Plant in
Scilab
Supervisor:
Bjørnar Svingen
Erik Rognaldsen
MASTER THESIS
Background and objective
Using block diagrams to describe components in
hydropower plantsmakes it possible to simulate
and analyze different power plant designs.
To simulate hydropower plants in both island
mode operation and hydropower plants
connected to an infinite bus, improvements to
the block diagrams with regards to both the
hydraulic system and the system design must
be made.
An existing model will be expanded with an inlet
pipe, surge shaft and dynamic penstock. It is
desirable to perform a theoretical deduction
of the turbine transfer coefficients by using T.
Nielsen’s turbine equations. Model verification
is done by comparing simulations in Scilab
to LVTrans and with experiments done in the
laboratory.
The block diagram model
made in Scilab. The model
utilizes a linearized Francis
turbine model controlled
with a PI regulator. The
penstock is modeled as a rigid
watercolumn
Response in frequency due to
a drop in load demand. The
graph is from the Scilab model
made in the project