Economical Design of Utility-Scale Photovoltaic Power Plants With Optimum Availability

Moradi‐Shahrbabak, Zahra; Tabesh, Ahmadreza; Yousefi, G. Reza

doi:10.1109/tie.2013.2278525

Cited by 62 publications

(22 citation statements)

References 18 publications

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“…To tackle the challenge, this paper proposes a new online overvoltage prevention (OOP) control strategy to maintain PV terminal voltages within specified range while maximizing the PV energy yields. [12] this paper presents the reliability estimation of the power stages in three grid-connected photovoltaic systems. The circuits analyzed are an integrated topology, a two-stage configuration, and a threestage one, all commutating in the hard-switching mode.…”

Section: J M Guerrero 2013mentioning

confidence: 99%

“…E. Kakosimos, 2013 [14] In this paper, a photovoltaic (PV)-system maximum power point (MPP) tracking (MPPT) control strategy employing a predictive digital current-controlled converter implemented in conventional hardware resources is presented. [15] this paper investigates a formulation of the Optimal Power Flow (OPF) problem, which aims to find the predictive optimal operational state of a low voltage smart grid.…”

Section: F Chanand H Calleja 2011mentioning

confidence: 99%

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Optimal Power Consumption in Micro Grid Based on PV Array

2017

ETJ

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Microgrids provide the ability to take energy from the grid as well as feed power directly to the grid through low voltage networks, thereby allowing the customer to become an active participant in the grid. They should also be able to work in emergency state and be disconnected from the grid, called islanded mode. Prediction and forecasting of renewable energy production plays a key role in microgrid management and control. Prediction algorithms are implemented part of the Energy Information Algorithm of microgrids. In smart microgrid is coupled with power system to deliver a smart system that can provide energy in efficient manner. Energy information system plays, therefore, a key role in managing the resources within the microgrid and can be thought as a layer on the top of the power layer.

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Section: J M Guerrero 2013mentioning

confidence: 99%

Section: F Chanand H Calleja 2011mentioning

confidence: 99%

Optimal Power Consumption in Micro Grid Based on PV Array

2017

ETJ

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“…2) Confiabilidade/disponibilidade da energia [36], [37]. 3) Suporte a diferentes condições ambientais [19][8].…”

Section: B Requisitos De Robustez E Confiabilidadeunclassified

Conversores Fotovoltaicos Multifuncionais - Classificação e Requisitos de Compatibilidade com a Rede e com as Cargas

Bellinaso¹,

Michels²

2016

Eletrônica de Potência

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Resumo - MULTIFUNCTIONAL PHOTOVOLTAIC CONVERTERS -CLASSIFICATION AND REQUIREMENTS FOR GRID AND LOAD COMPATIBILITYAbstract -Multifuncional photovoltaic converters, commercially known as hybrid inverters, can feed energy to the grid and have energy storage to feed loads when the grid is absence. Thus, they unite features of grid-tie photovoltaic inverters and uninterruptible power supplies (UPS). This study proposes classifications for these converters and requirements related to the grid and loads. The converters are classified in accordance to UPS configurations of IEC 62040-3 and interruption time during transfers. In the following, general requirements that can be applied to multifunctional photovoltaic converters are listed. Possible grid and load compatibility requirements are analyzed in detail, considering standards NBR 16149, PRODIST and IEC 62040-3. Conflicts were found between these standards, and some solutions are proposed. Recentemente, conversores fotovoltaicos multifuncionais que reúnem características de ambos os inversores grid-tie e off-grid têm sido estudados [10]- [16]. Esses conversores são denominados híbridos por apresentarem uma ou mais fontes de energia além da fotovoltaica [17]. Operam em três modos relacionados à conexão com a rede e alimentação de cargas [14]: i) modo grid-tie, em que fornece potência à rede elétrica como inversor conectado à rede convencional; ii) modo retificador, em que funciona conectado à rede como retificador para carregar baterias pela rede elétrica; e iii) modo off-grid, em que fornece tensão a cargas prioritárias na ausência da rede elétrica. Nesse modo de operação, baterias ou outra fonte ininterrupta é necessária caso a carga não tolere geração fotovoltaica intermitente. Devido a esses três modos, esses conversores podem ser mais bem caracterizados não como a união de inversores conectados à rede e autônomos, mas sim como a união de inversores conectados à rede e fontes ininterruptas de energia (UPSUninterruptible Power Supply), conhecidas popularmente no Brasil como no-breaks.Por ser uma tecnologia recente, normas específicas definindo os requisitos técnicos necessários a esses conversores multifuncionais ainda não foram desenvolvidas. Entretanto, normas relativas a inversores conectados à rede e UPS podem ser consideradas. Atualmente, destacam-se as normas NBR 16149, NBR IEC 62116 e IEC 62109, relativas a inversores conectados à rede, e as normas NBR 15204 [18] e da série IEC 62040, relativas a UPS [19].

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“…The output power of PV systems differs from the power generated by conventional sources due to the high uncertainty of PV power output, and the availability associated with PV system components [2][3][4] and their relative configurations. Electric power utilities and customers are therefore The LOLE can be defined as the expected period of time during which the system load exceeds the available generating capacity.…”

Section: Introductionmentioning

confidence: 99%

Development of Probabilistic Reliability Models of Photovoltaic System Topologies for System Adequacy Evaluation

Alferidi

Karki

2017

Applied Sciences

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Abstract:The contribution of solar power in electric power systems has been increasing rapidly due to its environmentally friendly nature. Photovoltaic (PV) systems contain solar cell panels, power electronic converters, high power switching and often transformers. These components collectively play an important role in shaping the reliability of PV systems. Moreover, the power output of PV systems is variable, so it cannot be controlled as easily as conventional generation due to the unpredictable nature of weather conditions. Therefore, solar power has a different influence on generating system reliability compared to conventional power sources. Recently, different PV system designs have been constructed to maximize the output power of PV systems. These different designs are commonly adopted based on the scale of a PV system. Large-scale grid-connected PV systems are generally connected in a centralized or a string structure. Central and string PV schemes are different in terms of connecting the inverter to PV arrays. Micro-inverter systems are recognized as a third PV system topology. It is therefore important to evaluate the reliability contribution of PV systems under these topologies. This work utilizes a probabilistic technique to develop a power output model for a PV generation system. A reliability model is then developed for a PV integrated power system in order to assess the reliability and energy contribution of the solar system to meet overall system demand. The developed model is applied to a small isolated power unit to evaluate system adequacy and capacity level of a PV system considering the three topologies.Keywords: capacity outage probability table (COPT); loss of load expectation (LOLE); loss of energy expectation (LOEE); capacity credit (CC); effective load carrying capability (ELCC)

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Economical Design of Utility-Scale Photovoltaic Power Plants With Optimum Availability

Cited by 62 publications

References 18 publications

Optimal Power Consumption in Micro Grid Based on PV Array

Optimal Power Consumption in Micro Grid Based on PV Array

Conversores Fotovoltaicos Multifuncionais - Classificação e Requisitos de Compatibilidade com a Rede e com as Cargas

Development of Probabilistic Reliability Models of Photovoltaic System Topologies for System Adequacy Evaluation

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