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  1. Article: Complete Dataset to be used as a workbench to evaluate the profitability of an offshore wind farm

    Gonzalez-Rodriguez, Angel G. / Serrano-Gonzalez, Javier / Burgos-Payan, Manuel / Riquelme-Santos, Jesus

    Data in Brief. 2022 June 14,

    2022  

    Abstract: The presented data collection has been used in the paper Multi-objective optimization of a uniformly distributed offshore wind farm considering both economic factors and visual impact, but can be used for a realistic evaluation of the annual energy ... ...

    Abstract The presented data collection has been used in the paper Multi-objective optimization of a uniformly distributed offshore wind farm considering both economic factors and visual impact, but can be used for a realistic evaluation of the annual energy production of an offshore wind farm and/or the calculation of the project investment cost. It contains realistic wind data, a bathymetric map, the definition of the coast shoreline and forbidden zones, as well as the acquisition and installation cost for the most important components influencing the investment and operation costs.
    Keywords coasts ; data collection ; energy ; profitability ; shorelines ; wind ; wind farms
    Language English
    Dates of publication 2022-0614
    Publishing place Elsevier Inc.
    Document type Article
    Note Pre-press version
    ZDB-ID 2786545-9
    ISSN 2352-3409
    ISSN 2352-3409
    DOI 10.1016/j.dib.2022.108396
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Complete Dataset to be used as a workbench to evaluate the profitability of an offshore wind farm.

    Gonzalez-Rodriguez, Angel G / Serrano-Gonzalez, Javier / Burgos-Payan, Manuel / Riquelme-Santos, Jesus

    Data in brief

    2022  Volume 43, Page(s) 108396

    Abstract: The presented data collection has been used in the ... ...

    Abstract The presented data collection has been used in the paper
    Language English
    Publishing date 2022-06-22
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2786545-9
    ISSN 2352-3409 ; 2352-3409
    ISSN (online) 2352-3409
    ISSN 2352-3409
    DOI 10.1016/j.dib.2022.108396
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Profitability of household photovoltaic self-consumption in Spain

    Roldán Fernández, Juan Manuel / Burgos Payán, Manuel / Riquelme Santos, Jesús Manuel

    Journal of cleaner production. 2021 Jan. 10, v. 279

    2021  

    Abstract: The profitability of household PV self-consumption, intended with the new renewable self-consumption regulation in Spain, is expected to boost its deployment. Renewable self-consumption, in addition to savings in the electricity bill of consumers, also ... ...

    Abstract The profitability of household PV self-consumption, intended with the new renewable self-consumption regulation in Spain, is expected to boost its deployment. Renewable self-consumption, in addition to savings in the electricity bill of consumers, also unlocks a variety of benefits such as the reduction of CO₂ emissions and electrical power losses in the transmission network, the reduction of electricity price in the wholesale market, the energy dependence rate or the creation of local work. In spite of all these advantages, many barriers have prevented the development of renewable self-consumption in Spain until October 2018, when a new regulation introduced the right to self-consume renewable electrical energy without charges. This work is intended to assess the profitability of residential PV self-consumption in Spain. To achieve that goal the hourly profiles of demand and PV self-production for an average dwelling have been elaborated based on one-year data from the System Operator. Our findings highlight that a 1.5–2 kW-peak PV commercial self-consumption kit yields to an optimum net billing situation for an average dwelling, which means an effective saving of the previous electricity bill.
    Keywords carbon dioxide ; electric power ; electricity ; electricity costs ; energy ; greenhouse gas emissions ; profitability ; wholesale marketing ; Spain
    Language English
    Dates of publication 2021-0110
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0959-6526
    DOI 10.1016/j.jclepro.2020.123439
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Assessing the decarbonisation effect of household photovoltaic self-consumption

    Roldan-Fernandez, Juan Manuel / Burgos-Payan, Manuel / Riquelme-Santos, Jesus Manuel

    Journal of cleaner production. 2021 Oct. 10, v. 318

    2021  

    Abstract: the combination of falling renewable technology costs, with high and rising electricity prices and non-obstructive national regulations are making distributed generation increasingly attractive. In the case of photovoltaic (PV) systems, even domestic ... ...

    Abstract the combination of falling renewable technology costs, with high and rising electricity prices and non-obstructive national regulations are making distributed generation increasingly attractive. In the case of photovoltaic (PV) systems, even domestic consumers find it profitable to self-produce part of their electricity demand, instead of purchasing all their energy from the grid, which is changing the current way of obtaining and consuming electricity. The purpose of this work is to estimate the decarbonisation effect in the Iberian/Spanish market, produced by domestic PV self-consumption, once the new regulation, passed in 2019, has removed the previous regulatory barriers in Spain. To achieve this goal, the nationwide, distributed, domestic PV self-production was turned into a reduction of the aggregate demand in the market, and the new clearing point and the corresponding dispatched generators list was established, by emulating the performance of the market operator. Based on 2016–2019 market data, the results suggest that self-consumption could decarbonise the Iberian electricity market, with an average rate of just over 300 tCO₂₋ₑq/year for each GWh/year of household PV self-consumed energy.
    Keywords electricity ; energy ; markets ; sustainable technology ; Spain
    Language English
    Dates of publication 2021-1010
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0959-6526
    DOI 10.1016/j.jclepro.2021.128501
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: A Low-Cost Non-Intrusive Method for In-Field Motor Speed Measurement Based on a Smartphone.

    Paramo-Balsa, Paula / Roldan-Fernandez, Juan Manuel / Burgos-Payan, Manuel / Riquelme-Santos, Jesus Manuel

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 13

    Abstract: Induction motors are broadly used as drivers of a large variety of industrial equipment. A proper measurement of the motor rotation speed is essential to monitor the performance of most industrial drives. As an example, the measurement of rotor speed is ... ...

    Abstract Induction motors are broadly used as drivers of a large variety of industrial equipment. A proper measurement of the motor rotation speed is essential to monitor the performance of most industrial drives. As an example, the measurement of rotor speed is a simple and broadly used industrial method to estimate the motor's efficiency or mechanical load. In this work, a new low-cost non-intrusive method for in-field motor speed measurement, based on the spectral analysis of the motor audible noise, is proposed. The motor noise is acquired using a smartphone and processed by a MATLAB-based routine, which determines the rotation speed by identifying the rotor shaft mechanical frequency from the harmonic spectrum of the noise signal. This work intends to test the hypothesis that the emitted motor noise, like mechanical vibrations, contains a frequency component due to the rotation speed which, to the authors' knowledge, has thus far been disregarded for the purpose of speed measurement. The experimental results of a variety of tests, from no load to full load, including the use of a frequency converter, found that relative errors on the speed estimation were always lower than 0.151%. These findings proved the versatility, robustness, and accuracy of the proposed method.
    MeSH term(s) Rotation ; Smartphone ; Vibration
    Language English
    Publishing date 2021-06-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21134317
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Optimal energy bidding for renewable plants: A practical application to an actual wind farm in Spain

    Endemaño-Ventura, Lázaro / Serrano González, Javier / Roldán Fernández, Juan Manuel / Burgos Payán, Manuel / Riquelme Santos, Jesús Manuel

    Renewable energy. 2021 Sept., v. 175

    2021  

    Abstract: Finding an optimal bidding strategy for a wind farm in the electricity market is not straightforward due to the wind variability. This issue is becoming more relevant as renewable plants are more exposed to market signals. Considering the characteristics ...

    Abstract Finding an optimal bidding strategy for a wind farm in the electricity market is not straightforward due to the wind variability. This issue is becoming more relevant as renewable plants are more exposed to market signals. Considering the characteristics of the European markets, operators must submit the energy bidding between 12 and 36 h ahead the actual delivery time. This bidding can be adjusted later in any session of the intraday markets, but sometimes this is not enough to reduce significantly the deviation risk. This paper presents a practical application of a method to analytically calculate the optimal bidding of a wind power plant, based on the maximisation of the income function. The results show that, given the characteristics of the deviation markets in Spain, the optimal bidding strategy depends essentially on the deviation of the system. The proposed technique has been tested and validated in a real application by considering actual data for energy production and forecasts for an operating wind farm in Spain, as well as real market deviations and prices provided by the Spanish system and market operators; analysing the advantages of the proposed optimal bidding strategy over the most plausible option, based on bidding the forecasted energy.
    Keywords electricity ; energy ; income ; markets ; power plants ; risk ; wind ; wind farms ; wind power ; Spain
    Language English
    Dates of publication 2021-09
    Size p. 1111-1126.
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 2001449-1
    ISSN 1879-0682 ; 0960-1481
    ISSN (online) 1879-0682
    ISSN 0960-1481
    DOI 10.1016/j.renene.2021.05.054
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: Techno-economic optimal power rating of induction motors

    Burgos Payán, Manuel / Juan Manuel Roldan Fernandez / Jose Maria Maza Ortega / Jesus Manuel Riquelme Santos

    Applied energy. 2019 Apr. 15, v. 240

    2019  

    Abstract: Electric motors are valuable, long-life industrial assets, whose lifespan is often measured in decades. A period of unplanned motor downtime in an industrial plant frequently incurs an expenditure of thousands of euros per hour. As a consequence, plant ... ...

    Abstract Electric motors are valuable, long-life industrial assets, whose lifespan is often measured in decades. A period of unplanned motor downtime in an industrial plant frequently incurs an expenditure of thousands of euros per hour. As a consequence, plant engineers often focus their decisions on reliability rather than on operating cost (energy bill). Unfortunately, the high price of energy and its growing trend mean that operating cost has an increasingly negative impact on production cost and company competitiveness.The problem of selecting the rated power of a line-operated single-speed electric motor to drive a time-variable mechanical load has traditionally been solved, based on the well-established root mean square (RMS) value of the time-power profile of the mechanical load. This conventional method of rating is strictly technical, since the rated power of the motor is determined, based only on the power profile of the load. No other factors are considered, such as the energy consumption throughout the whole in-service life of the motor, or, even better, the whole life cycle cost (LCC), which is defined as the net present value of purchasing, installing, operating (energy), maintaining and decommissioning the motor throughout its life. As a consequence, conventional rating often leads to the selection of motors with a power rating that is technically sufficient to drive the mechanical load, but insufficient to do so with the lowest possible energy (losses) consumption, or even better, with the lowest possible life cycle cost.A new analytical method to determine the techno-economic optimum power rating of a line-operated single-speed electric motor to drive a time-variable mechanical load will be introduced in this paper. The proposed method takes into account not only the technical restrictions due to the time-power profile of the mechanical load, but also the whole life cycle cost. Based on the list of electric motors offered in the manufacturer’s catalogue, the new methodology enables the optimum techno-economic rated power of the motor to be calculated, which minimizes the energy consumption (energy loss) throughout its in-service life or its total life cycle cost. The results show that the optimum techno-economic rating is one or two rated-power levels above the conventional rating based solely on the RMS load.
    Keywords analytical methods ; assets ; electric motors ; energy ; energy costs ; life cycle costing ; mechanical loads ; operating costs ; prices ; purchasing
    Language English
    Dates of publication 2019-0415
    Size p. 1031-1048.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2000772-3
    ISSN 0306-2619
    ISSN 0306-2619
    DOI 10.1016/j.apenergy.2019.02.016
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: Costs and benefits of the renewable production of electricity in Spain

    Burgos-Payán, Manuel / Roldán-Fernández, Juan Manuel / Trigo-García, Ángel Luis / Bermúdez-Ríos, Juan Manuel / Riquelme-Santos, Jesús Manuel

    Energy policy

    Volume v. 56

    Abstract: The reduction of pollutant emissions and greenhouse gases, as well as the strong energy dependence on fossil fuels (gas and fuel oil), have, among other reasons, led many countries in recent years to develop policies to promote and encourage the use of ... ...

    Abstract The reduction of pollutant emissions and greenhouse gases, as well as the strong energy dependence on fossil fuels (gas and fuel oil), have, among other reasons, led many countries in recent years to develop policies to promote and encourage the use of alternative, sustainable, clean and predictable sources of energy. This paper presents an overview of the production of electricity from renewable sources (PE-RES) in Spain, and offers an outline of the current level of development of renewable energy. It also reviews the current support system, the costs of integrating renewable energy into the electric system as well as the effects of this type of energy on the electricity wholesale market price, the Gross Domestic Product (GDP), the environment, human health and employment.
    Keywords human health ; employment ; pollutants ; renewable energy sources ; fossil fuels ; wholesale marketing ; greenhouse gas emissions ; gross domestic product ; market prices ; issues and policy ; electricity ; fuel oils ; energy
    Language English
    Document type Article
    ISSN 0301-4215
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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