Examinando por Autor "Rus-Casas, Catalina"

Mostrando 1 - 20 de 20

A new approach based on economic profitability to sizing the photovoltaic generator in self-consumption systems without storage
(Elsevier, 2020-04) Jiménez-Castillo, Gabino; Muñoz-Rodriguez, Francisco José; Rus-Casas, Catalina; López-Talavera, Diego
A proper assessment of the cost-competitiveness and profitability of self-consumption systems is crucial to promoting the transition from grid-dependent to energy self-sufficient buildings. Most of the approaches found in the literature may not take into account economic parameters such as taxes, depreciation and the cost of financing, which have a significant effect on the economic profitability of an investment. Moreover, they only focus on discrete array powers and relatively high recording intervals when estimating the self-consumed energy. In order to manage the aforementioned challenges, a new method will be developed to size the PV generator in a PV self-consumption system which provides the NPV curve together with the self-consumption and self-sufficiency indices for a wide range of array powers which suits residential self-consumption systems. Two scenarios will be considered depending on whether the generated surplus electricity is wasted or it is remunerated from the grid operator. Results show that not only the chosen scenario but the electricity tariff may be key parameters when optimizing NPV. Furthermore, the impact of the recording interval may be significant when estimating NPV. Percentage errors of 11.4% and 33.6% may be reached when considering a recording interval of 15 and 60 min, respectively.
A new approach to sizing the photovoltaic generator in self-consumption systems based on cost–competitiveness, maximizing direct self-consumption
(Elsevier, 2019-01) López-Talavera , Diego; Muñoz-Rodríguez , Francisco José; Jiménez-Castillo, Gabino; Rus-Casas, Catalina
Applications for sizing Photovoltaic (PV) self-consumption systems have been studied over recent years in order to achieve either an optimization of the cost of energy, the investment cost or any economic profitability criteria. However, PV self-consumption systems at the residential or small business level can be designed with the aims of reducing the electricity consumption from the conventional local grid and achieving competitiveness with grid electricity prices. These criteria will provide not only greater environmental benefits, security and independence of the grid but it will make the cost of PV self-consumption electricity competitive with electricity prices from the power grid. In this sense, this paper proposes a method to size the generator for a PV self-consumption system based on cost-competitiveness, maximizing direct self-consumption. The method will be applied for three different households located in the south of Spain using the household daily consumption and generation profiles for a single year. However, the method here illustrated can be applied to other countries. The results obtained suggest that residential direct PV self-consumption systems with an annual global irradiation at the optimal tilt angle higher than 1000 kWh/(m2·year) may be a feasible investment to future owners of these systems.
Analysis of Different Scenarios to Include PV Rooftop Systems with Battery Energy Storage Systems in Olive Mills
(MDPI, 2023-12-27) Sánchez-Jiménez, José Luis; Muñoz-Rodríguez, Francisco José; Jiménez-Castillo, Gabino; Martínez-Calahorro, Antonio Javier; Rus-Casas, Catalina
The industrial sector is not the one with the highest energy consumption but, together with, it represents the most, together with the transport sector, the most polluting ones. Photovoltaic Rooftop systems and battery energy storage systems are very strong candidates to include renewable energy, allowing greater grid autonomy and greenhouse gas mitigation. Therefore, this paper aims to outline it will be provided a methodology based on monitored data to analyze the potential of photovoltaic Rooftops with battery energy storage systems regarding self-consumption and self-sufficiency indices in the industrial sector. Direct self-consumption and self-sufficiency indices, either with or without storage, will be analyzed. In addition, the iso self-consumption and iso self-sufficiency curves are used, which allow us to evaluate the matching between the generation and consumption profiles considering either direct self-consumption or the use of batteries. In this sense, a large, medium, and small olive mill were selected in order to cover the entire spectrum of these industries. Olive mills are suitable candidates for the incorporation of photovoltaic systems since generation profiles match the consumption profiles. However, the size of these systems is highly dependent on the period of consumption to be faced. Regarding batteries, both during the harvest and off-harvest periods, the impact on self-sufficiency becomes significant, reaching increases of up to 10%, depending on the battery capacity used.
Assessment of Single-Axis Solar Tracking System Efficiency in Equatorial Regions: A Case Study of Manta, Ecuador
(MDPI, 2024-08-09) Ponce-Jara, Marcos A.; Pazmino, Ivan; Moreira-Espinoza, Ángelo; Gunsha-Morales, Alfonso; Rus-Casas, Catalina
Ecuador is grappling with a severe energy crisis, marked by frequent power outages. A recent study explored solar energy efficiency in the coastal city of Manta using an IoT real-time monitoring system to compare static photovoltaic (PV) systems with two single-axis solar tracking systems: one based on astronomical programming and the other using light-dependent resistor (LDR) sensors. Results showed that both tracking systems outperformed the static PV system, with net gains of 31.8% and 37.0%, respectively. The astronomical-programming-based system had a slight edge, operating its stepper motor intermittently for two minutes per hour, while the LDR system required continuous motor energization. The single-axis tracker using astronomical programming demonstrated notable advantages in energy efficiency and complexity, making it suitable for equatorial regions like Manta. The study also suggested potential further gains by adjusting solar positioning at shorter intervals, such as every 15 or 30 min. These findings enhance our understanding of solar tracking performance in equatorial environments, offering valuable insights for optimizing solar energy systems in regions with high solar radiation. By emphasizing customized solar tracking mechanisms, this research presents promising solutions to Ecuador’s energy crisis and advances sustainable energy practices.
CACESOL: Characterization of photovoltaic solar cells and modules. Experimental measurement of the V-I curves
(Journal Science IES, 2016-06-27) Amate-Marchal, M.; Castro-Valderas, J.; Bueno-Rodríguez, R.; Pérez-Jiménez, F. J.; Gómez-Macías, A.; Medina-Rincón, A.; Aguilar-Peña, Juan Domingo; Rus-Casas, Catalina; Muñoz-Rodríguez, Francisco José
La obtención y translación a condiciones estándar de medida (CEM) de las curvas características V-I tomadas a sol real de una célula y módulo fotovoltaico, probablemente sea una de las prácticas imprescindibles en cualquier trabajo de investigación relacionado con la tecnología fotovoltaica. Este trabajo trata de obtener los distintos parámetros de las curvas de funcionamiento de la célula y módulo fotovoltaico, para diferentes condiciones de iluminación (irradiancia), pasar a valores en condiciones estándar de medida y comparar con las proporcionadas en las hojas de características por el fabricantede dispositivos fotovoltaicos (FV). Se demuestra la dependencia de la corriente con la irradiancia recibida sobre la célula solar. Nuestro estudio se realizó en el laboratorio (indoor) y en condiciones a sol real (outdoor) con un mini módulo de silicio monocristalino (CS20M20 de 2,36v, 1.21A, 2.2Wp), y módulo de silicio policristalino (Shell RSM 100S de 100Wp). Los parámetros a medir son: la temperatura de la célula (Tc), temperatura ambiente (Ta), irradiancia (G), la corriente en cortocircuito (ISC), tensión en circuito abierto (VOC). Para la obtención de la curva VI en interior se utilizaron distintos valores de resistencias eléctricas para la medida de la tensión en extremos del módulo y la corriente del circuito. La instrumentación utilizada para la medida de los distintos parámetros fue, termómetro de temperatura de superficie y temperatura ambiente, voltímetro DC, pinza amperimétrica y medidor de irradiancia. Una vez realizadas las distintas medidas, se han hecho los cálculos necesarios para mostrar el comportamiento de los módulos ensayados.
Contribución a la monitorización y análisis del funcionamiento de sistemas fotovoltaicos
(Jaén : Universidad de Jaén, 2019-06-28) Jiménez-Castillo, Gabino; Muñoz-Rodríguez, Francisco José; Rus-Casas, Catalina; Universidad de Jaén. Departamento de Ingeniería Electrónica y Automática
Esta tesis pretende aportar contribuciones relevantes en el ámbito de la monitorización y análisis de funcionamiento de los sistemas fotovoltaicos, especialmente en los sistemas fotovoltaicos autónomos y de autoconsumo en el sector residencial. Los métodos de monitorización, así como el análisis de funcionamiento propuestos deben ser fáciles de implementar. No obstante, no se debe comprometer la exactitud y precisión de los resultados. El coste de los sistemas de monitorización debe ser acorde con el coste de la instalación. Una adecuada monitorización se traduce en una estimación precisa de determinados parámetros que no solo permiten realizar un buen análisis desde el punto de vista energético sino también desde el punto de vista económico. En sistemas fotovoltaicos de autoconsumo puede ser relevante puesto que se debe estimar la energía fotovoltaica autoconsumida que se ahorra de la red eléctrica, así como la energía que se puede verter a la red. This PhD thesis provides relevant contributions in the monitoring field and performance analysis of photovoltaic systems, especially in stand-alone and self-consumption photovoltaic systems in the residential sector. The monitoring techniques and methods, as well as the proposed performance analysis, should be easy to implement. However, the methods should provide high accuracy and the requirements of standards must be followed. Moreover, the cost of the monitoring systems should be in accordance with the cost of the photovoltaic installation. An adequate monitoring provides an accurate estimation of measured parameters that not only address a performance analysis based on monitoring data from the energy point of view but also from the economic point of view. In self-consumption photovoltaic systems, self-consumed energy may be relevant because it is the electrical energy which can be saved from the electricity grid as well as the generated energy which is not self-consumed energy fed into the grid
Development of a Prototype for Monitoring Photovoltaic Self-Consumption Systems
(MDPI, 2020-01-01) Rus-Casas, Catalina; Jiménez-Castillo, Gabino; Aguilar-Peña, Juan Domingo; Fernández-Carrasco, Juan Ignacio; Muñoz-Rodríguez, Francisco José
Currently, the increasing energy consumption around the world and the environmental impact resulting from the use of fossil fuel-based energy have promoted the use of renewable energy sources such as photovoltaic solar energy. The main characteristic of this type of energy is its unpredictability, as it depends on meteorological conditions. In this sense, monitoring the power generation of photovoltaic systems (PVS) in order to analyze their performance is becoming crucial. The purpose of this paper is to design a monitoring system for a residential photovoltaic self-consumption system which employs an Internet of Things (IoT) platform to estimate the photovoltaic power generation according to solar radiation and temperature. The architecture of the developed prototype will be described and the benefits of providing the use of IoT for monitoring will be highlighted, since all data collected by the data acquisition system (DAS) may be stored in the Cloud. The comparison of the results with those of other monitoring systems was very positive, with an uncertainty that complies with the IEC61724 standard.
Development of a Utility Model for the Measurement of Global Radiation in Photovoltaic Applications in the Internet of Things (IoT)
(MDPI, 2019-03-08) Rus-Casas, Catalina; Hontoria, Leocadio; Fernández-Carrasco, Juan Ignacio; Jiménez-Castillo, Gabino; Muñoz-Rodríguez, Francisco José
In order to develop future projects in the field of photovoltaic solar energy, it is essential to accurately know the potential solar resources. There are many methods to estimate the incident solar radiation in a certain place. However, most of them are very expensive or do not have the ideal characteristics for good monitoring of a particular photovoltaic installation. For these reasons, an electronic device connected to the internet of things (IoT) is presented in this paper which manages to measure global radiation in photovoltaic applications. The device developed has been patented in the Spanish Patent and Trademark Office. It presents some features that make it very suitable to measure photovoltaic installations with the advantage of being a low cost and very reliable device. The device has been tested to determine global horizontal irradiance obtaining a correlation coefficient R2 = 0.994.
Distributed generation and photovoltaic selfconsumption. Energy potential for the olive mill industries in Spain
(Publicaciones DYNA SL, 2020-09) Martínez-Calahorro, Antonio Javier; Jiménez-Castillo, Gabino; Rus-Casas, Catalina; Muñoz-Rodríguez, Francisco José
The industrial sector faces a new paradigm of energy offshoring, where distributed generation can play a leading role in reducing energy costs in industries, as well as in its C02 emissions. This work shows the potential that photovoltaic self-consumption systems can present to face part of the consumption in the industries of the agri-food sector, specifically the oil mills. The electrical consumption of this type of industry for an oil mill is analyzed, as well as the level of coupling between the actual consumption profiles and the estimated photovoltaic generation profiles for a given range of powers of the photovoltaic generator. The analysis method is easily extrapolated to any mill located in Spain. Likewise, and given that this type of industry has a very characteristic consumption profile, the results obtained are easily transferable to other oil mills. For the mill analyzed, and from an annual perspective, a level of use of the generated photovoltaic energy of 75% with a self-sufficiency index of 20% has been estimated, highlighting the great potential of this technology, as an energy option in this type of industry, as well as in any other that presents a consumption with little variability.
Effects of smart meter time resolution when analyzing photovoltaic self-consumption system on a daily and annual basis
(Elsevier, 2021-02) Jiménez-Castillo, Gabino; Rus-Casas, Catalina; Tina, Giuseppe Marco; Muñoz-Rodríguez, Francisco José
The management of photovoltaic self-consumption systems is based mainly on updating energetic parameters such as generation and household power consumption connected via smart devices. The expected rapid increasing volume of data collected with different time resolutions is surely a topic that deserves great attention. The choice of a proper recording interval should balance the amount of monitored data and a proper energy analysis in order not only to take effective and timely decisions but also to help this technology to be more efficient. In the literature, only specific nominal array powers for annual reporting period or an array power range for daily reporting period have been considered. In this context, the error, when matching photovoltaic generation and household power consumption profiles considering different recording intervals (1, 10, 15, 30 and 60 min) and different reporting periods (daily and annual), will be estimated as a function of the array power (up to 10 kWp) for five households and a resident’s association. Results depend on the reporting periods and it may be advisable to use 1 min and 10 min of recording intervals in order to estimate performance metrics in this type of system for a daily and annual basis, respectively.
Impacts of Array Orientation and Tilt Angles for Photovoltaic Self-Sufficiency and Self-Consumption Indices in Olive Mills in Spain
(MDPI, 2020-02-18) Jiménez-Castillo, Gabino; Muñoz-Rodríguez, Francisco José; Martinez-Calahorro, Antonio Javier; Tina, Giuseppe Marco; Rus-Casas, Catalina
Olive mills are extensive in the Mediterranean Basin, and Spain constitutes approximately 45% of global production. The industrial sector faces a new energetic paradigm where distributed generation provided by small renewable energy sources may reduce the dependence from fossil energy sources as well as avoid energy distribution losses. Photovoltaic self-consumption systems can play an important role in confronting this challenge due to their modularity and their decreasing cost. Most of self-sufficiency energy studies are focused on building sector and discussions about the idiosyncrasy of industrial load profiles, and their matching capability with photovoltaic generation profiles can be scarcely found. This work analyzes the potential of photovoltaic self-consumption systems as a function of the array power, array tilt, and orientation angles to face the electric consumption in olive mills. Different recording intervals and reporting periods are considered. Results show that a self-sufficiency index of 40% may be achieved on olive harvest basis. Moreover, due to the load profile particularities, percentage error lower than 1.6% has been found when considering a recording interval of 60 min when matching the olive load consumption and photovoltaic generation profiles. Chosen array tilt and orientation angles may be key parameters to maximize the self-sufficiency index.
Improvements in Performance Analysis of Photovoltaic Systems: Array Power Monitoring in Pulse Width Modulation Charge Controllers
(MDPI, 2019-05-09) Jiménez-Castillo, Gabino; Muñoz-Rodríguez, Francisco José; Rus-Casas, Catalina; Gómez-Vidal, Pedro
Various challenges should be considered when measuring photovoltaic array power and energy in pulse width modulation (PWM) charge controllers. These controllers are frequently used not only in stand-alone photovoltaic (SAPV) systems, but may also be found in photovoltaic (PV) self-consumption systems with battery storage connected to the electricity grid. An acceptable solution may be reached using expensive data acquisition systems (DASs), although this could be generally disproportionate to the relatively low cost of SAPV systems. Therefore, the aim of this paper is to develop new and e ective monitoring techniques which will provide the PV array direct current (DC), output power (PA,dc), and PV array DC output energy (EA), thus avoiding the use of sophisticated DASs and providing high accuracy for the calculated parameters. Only transducers and electronic circuits that provide the average and true rms values of the PWM signals are needed. The estimation of these parameters through the aforementioned techniques showed high accuracy for both series and shunt PWM battery charge controllers. Normalized root mean square error (NRMSE) was lower than 2.4%, normalized mean bias error (NMBE) was between 􀀀1.5% and 1.1%, and mean absolute percentage error (MAPE) was within 1.6%.
Modelling of Electric Power Generation Plant Based on Gas Turbines with Agricultural Biomass Fuel
(MDPI, 2023-04-24) Rico-Riveros, Luis Fernando; Trujillo-Rodríguez, César Leonardo; Díaz-Aldana, Nelson Leonardo; Rus-Casas, Catalina
To ensure the survival of society, an enormous amount of energy is required to sustain the economic and social development of communities. In addition, there is a pressing need to achieve significant reductions in climate change and the associated costs of implementing systems based on traditional energy sources, as well as addressing the issue of providing electricity to isolated areas. In rural environments, there is an alternative energy source with enormous potential, agricultural biomass, which can produce electrical and thermal energy and can progressively help to reduce dependence on fossil fuels. The purpose of this work is to present a dynamic simulation model of a power generation plant that uses the Joule Brayton thermodynamic cycle, based on a gas turbine which is fueled by residual agricultural biomass; the cycle converts mechanical energy to electrical energy. The problem is approached through the characterization of the biomass, mathematical models of the plant components, and simulation of the system behavior in different scenarios. The simulations are processed in Matlab/Simulink, which allows the model to be verified, validating the equilibrium relationship between generation and load demand.
Objetos de aprendizaje multimedia en asignaturas de grado en ingeniería: Videocast, Screencast
(XVII Congreso Internacional EDUTEC, 2014-11-12) Aguilar-Peña, Juan Domingo; Rus-Casas, Catalina; Peña-Hita, María de los Ángeles
En esta comunicación presentamos varios videopodcasts elaborados en la Escuela Politécnica Superior de la Universidad de Jaén, dentro de proyectos de innovación docente (videos didácticos, sobre temas específicos concretos, tanto de teoría como de prácticas, grabaciones de clase on line, grabaciones de seminarios con Adobe Connect, screencast sobre algunos programas informáticos…) que servirán como complemento para asignaturas del Grado en Ingeniería Electrónica Industrial, que se imparten en la Universidad de Jaén. La idea es contribuir a la incorporación de una nueva cultura docente que suponga cambios metodológicos, el desarrollo de competencias y la introducción de las TIC, de acuerdo con las directrices del EEES, potenciando el trabajo autónomo del alumno y ayudando a la comprensión de algunos conceptos relacionados con la electrónica. Se comenta la importancia de este recurso didáctico, el videocast, en la docencia universitaria y, a su vez el proceso y materiales necesarios para su elaboración.
Optimizing Energy Management and Sizing of Photovoltaic Batteries for a Household in Granada, Spain: A Novel Approach Considering Time Resolution
(MDPI, 2024-10-11) Rus-Casas, Catalina; Gilabert-Torres, Carlos; Fernández-Carrasco, Juan Ignacio
As residential adoption of renewable energy sources increases, optimizing rooftop photovoltaic systems (RTPVs) with Battery Energy Storage Systems (BESSs) is key for enhancing self-sufficiency and reducing dependence on the grid. This study introduces a novel methodology for sizing Home Energy Management Systems (HEMS), with the objective of minimizing the cost of imported energy while accounting for battery degradation. The battery model integrated nonlinear degradation effects and was evaluated in a real case study, considering different temporal data resolutions and various energy management strategies. For BESS capacities ranging from 1 to 5 kWh, the economic analysis demonstrated cost-effectiveness, with a Net Present Value (NPV) ranging from 54.53 € to 181.40 € and discounted payback periods (DPBs) between 6 and 10 years. The proposed HEMS extended battery lifespan by 22.47% and improved profitability by 21.29% compared to the current HEMS when applied to a 10 kWh BESS. Sensitivity analysis indicated that using a 5 min resolution could reduce NPV by up to 184.68% and increase DPB by up to 43.12% compared to a 60 min resolution for batteries between 1 and 5 kWh. This underscores the critical impact of temporal resolution on BESS sizing and highlights the need to balance accuracy with computational efficiency.
Performance analysis indices for Rooftop Solar Photovoltaic system
(IEEE, 2023-07-09) Jiménez-Castillo, Gabino; Martínez-Calahorro, Antonio Javier; Rus-Casas, Catalina; Snytko, Anastasiia; Muñoz-Rodríguez, Francisco José
The integration of rooftop solar photovoltaic systems into the electricity grid may be crucial in the current energy scenario. At present, this type of electricity generation is cost-competitive in many countries due to its modularity, the availability of the solar resource and the cost of the components, without the need for subsidies. Rooftop Solar Photovoltaic systems have the potential to cover 20-30% of electricity demand in Spain. In order to assess the potential of this technology and to facilitate the deployment of this type of systems, it is very important to provide a proper performance analysis of PV Rooftops systems from monitored data. In this way, self-consumption and self-sufficiency indices are commonly used, however they may not provide a complete assessment. Hence, indices such as the self-sufficiency index for sunshine hours, self-production index and grid-liability rate are also analyzed. These indices estimate the performance of rooftop solar PV systems and provide maximum and minimum values when estimated as a function of array peak power. Moreover, new indices such as the self-production index and the grid-liability rate for sunshine duration have been developed to estimate the system's performance during sunshine hours. These indices can complement the commonly used metrics and improve the performance analysis from monitored data. Moreover, they may also help determine the proper size of the array power of these systems in the industrial sector. The metrics are evaluated using data from four canning industries equipped with rooftop solar photovoltaic systems that have been monitored for a year.
Photovoltaic Self-Consumption in Industrial Cooling and Refrigeration
(MDPI, 2020-12-21) Martínez-Calahorro, Antonio Javier; Jiménez-Castillo, Gabino; Rus-Casas, Catalina; Gómez-Vidal, Pedro; Muñoz-Rodríguez, Francisco José
The industrial sector has a great opportunity to reduce its energy costs through distributed generation. In this sense, the potential of photovoltaic self-consumption systems in the industrial cooling and refrigeration sector is shown. Two industries with photovoltaic self-consumption installations are shown and the electricity consumption profile of this type of industry which has a remarkable basal electricity consumption during daytime is analyzed. The matching between consumption and photovoltaic generation profiles is provided through the self-consumption and self-sufficiency curves considering different reporting periods (monthly and annual). Moreover, a new index is presented: self-sufficiency index for sunshine hours, φSS,SH. This index evaluates the performance of the photovoltaic self-consumption system when facing the consumption only during sunshine hours. This index may complement the self-sufficiency index and may improve the analysis of this type of systems in the industrial sector. Self-consumption indices of 90% may be provided. Moreover, self-sufficiency indices for total (24 h) and for sunshine hours of 25% and 50%, respectively, for industry A, and 26% and 45% for industry B have been obtained. During daytime, half the load consumption in this type of industry may be covered by photovoltaics while achieving high levels of use of the photovoltaic energy generated.
Recursos que fomentan un entorno personal de aprendizaje (PLE)
(Magisterio (https://www.magisterio.com.co/), 2016-04) Aguilar-Peña, Juan Domingo; Rus-Casas, Catalina; Jiménez-Torres, Miriam; Muñoz-Rodríguez, Francisco José
El presente artículo presenta una serie de recursos educativos desarrollados en el marco de distintas convocatorias de proyectos de innovación docente. Ellos contribuyen a una nueva estrategia docente centrada en la innovación, el desarrollo de competencias y la introducción efectiva de las TIC en la Educación Superior; además, potencian el trabajo autónomo del estudiante y el cómo debe aprender a lo largo de sus estudios. Se expone cómo se aumentan las posibilidades formativas, en los estudiantes de ingeniería, con la creación de un “Entorno Personal de Aprendizaje” basado en los recursos educativos.
Robust Nonsingular Terminal Sliding Mode Control of a Buck Converter Feeding a Constant Power Load
(MDPI, 2023-02-01) Louassaa, Khalil; Aissa, Chouder; Rus-Casas, Catalina
In recent years, DC microgrid systems feeding constant power loads (CPLs) have been given a particular focus due to their effect on the overall system stability caused by their electrical characteristics behaving as negative incremental impedance. To address this issue, this paper investigates the stabilization of a DC bus voltage in a DC microgrid (MG) feeding a CPL. The output voltage of the main DC bus is stabilized by using a robust nonsingular terminal sliding mode controller that is characterized by the elimination of the singularity problem that arises from the conventional terminal sliding mode controller. The CPL is emulated by a boost converter where its output voltage is tightly regulated. The system is investigated in terms of voltage following and disturbance rejection. The robustness and effectiveness of the proposed control strategy are assessed against input voltage fluctuations and power demand variations. The proposed controller is validated through simulations and an experimental setup.
Rooftop photovoltaic systems. New parameters for the performance analysis from monitored data based on IEC 61724
(Elsevier, 2023-06-13) Muñoz-Rodríguez, Francisco José; Snytko, Anastasiia; de-la-Casa-Hernández, Jesús; Rus-Casas, Catalina; Jiménez-Castillo, Gabino
Rooftops Photovoltaic systems present a feasible choice to mitigate the adverse effects of electricity costs and climate crisis. Different parameters have been defined to analyse this type of systems from monitored data. However, they only focus on the matching capability between the load and AC generation profiles together with the utility grid usage. Therefore, they do not consider the performance of the PV generator and the rest of components of the photovoltaic system. Moreover, although IEC-61724 standard defines common criteria to assess the performance of photovoltaic systems, this standard does not consider calculated parameters and yields adapted to the idiosyncrasy of Rooftops Photovoltaic systems. Thus, in this paper it will be provided new calculated parameters and yields (i.e. a self consumption yield and a to grid yield) and performance ratios (i.e. self-consumption Performance Ratio together with a to grid Performance Ratio) which combine selfconsumption with system performance providing a proper analysis from monitored data. Moreover, they may facilitate comparisons between installations with different array power. These new parameters may not only help to ensure that design objectives have been achieved but they may better assess the potential of this technology which are key issues for the deployment of this type of facilities.

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Examinando por Autor "Rus-Casas, Catalina"