Sizing of off-grid PV systems with Python
Fecha
2019Director
Versión
Acceso abierto / Sarbide irekia
Tipo
Trabajo Fin de Grado/Gradu Amaierako Lana
Impacto
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nodoi-noplumx
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Resumen
It is a fact that solar energy generation is becoming more available and affordable every
year. At the same time social awareness of the traditional energy system and its negative
impact on the planet is changing the mentality of the people towards renewable ways of
energy supply.
Now, a pending task in all this process of global energy transformation is to give the
people the chance to size ...
[++]
It is a fact that solar energy generation is becoming more available and affordable every
year. At the same time social awareness of the traditional energy system and its negative
impact on the planet is changing the mentality of the people towards renewable ways of
energy supply.
Now, a pending task in all this process of global energy transformation is to give the
people the chance to size their own renewable systems in a trustworthy way and as easy
as possible, but above all free of charge.
That is why a module written Python is presented in this paper. It allows the user to size
their own PV system in a relatively easy way. This module is initially focused on off-grid
(stand-alone) PV systems, but it can be upgraded to size off-grid solar-wind hybrid
systems as well.
The sizing is based on the reliability of the system to supply the energy demand. One way
to quantify this is by a parameter known as the Loss-of-Load Probability (LLP), defined
as the ratio between the estimated energy deficit and the energy demand over the total
operation time of the installation.
The module makes use of well stablished models for crystalline silicon solar cells, leadacid battery cells and other elements in a typical PV system. Apart from that, all the
information required to perform the sizing is available online. It is worth mentioning that
solar radiation information based on satellite images is becoming increasingly available
and is improving on ground coverage and resolution. [--]
Materias
Sizing photovoltaic systems,
Loss of load probability (LLP),
Loss of power supply probability (LPSP),
Off-gird,
Stand-alone,
Renewable energy,
Solar power,
Hybrid system
Titulación
Graduado o Graduada en Ingeniería en Diseño Mecánico por la Universidad Pública de Navarra /
Diseinu Mekanikoko Ingeniaritzan Graduatua Nafarroako Unibertsitate Publikoan