Accurate Sizing of Residential Stand-Alone Photovoltaic Systems Considering System Reliability

In rural areas or in isolated communities in developing countries it is increasingly common to install micro-renewable sources, such as photovoltaic (PV) systems, by residential consumers without access to the utility distribution network. The reliability of the supply provided by these stand-alone...

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Bibliographic Details
Published in:Sustainability 2020-02, Vol.12 (3), p.1274
Main Authors: Quiles, Eduardo, Roldán-Blay, Carlos, Escrivá-Escrivá, Guillermo, Roldán-Porta, Carlos
Format: Article
Language:English
Subjects:
Alternative energy sources
Computer simulation
Consumer protection
Consumers
Consumption
Costs
Customers
Developing countries
Energy demand
Energy resources
Households
LDCs
Load
Monte Carlo simulation
Network reliability
Photovoltaics
Regulation
Renewable resources
Rural areas
Sizing
Solar energy
Solar panels
Solar radiation
Sustainability
System reliability
Time series
Uncertainty
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Summary:In rural areas or in isolated communities in developing countries it is increasingly common to install micro-renewable sources, such as photovoltaic (PV) systems, by residential consumers without access to the utility distribution network. The reliability of the supply provided by these stand-alone generators is a key issue when designing the PV system. The proper system sizing for a minimum level of reliability avoids unacceptable continuity of supply (undersized system) and unnecessary costs (oversized system). This paper presents a method for the accurate sizing of stand-alone photovoltaic (SAPV) residential generation systems for a pre-established reliability level. The proposed method is based on the application of a sequential random Monte Carlo simulation to the system model. Uncertainties of solar radiation, energy demand, and component failures are simultaneously considered. The results of the case study facilitate the sizing of the main energy elements (solar panels and battery) depending on the required level of reliability, taking into account the uncertainties that affect this type of facility. The analysis carried out demonstrates that deterministic designs of SAPV systems based on average demand and radiation values or the average number of consecutive cloudy days can lead to inadequate levels of continuity of supply.
ISSN:2071-1050
2071-1050
DOI:10.3390/su12031274