Single‐phase solar PV system with battery and exchange of power in grid‐connected and standalone modes

Saxena, Nupur; Singh, Bhim; Vyas, Anoop Lal

doi:10.1049/iet-rpg.2016.0143

Cited by 50 publications

(27 citation statements)

References 15 publications

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“…In reality, however, SUs may operate under a larger set of operating constraints. For instance: chemistry-based batteries may be constrained by internal electrochemical processes [27]; the operation of the SU may be constrained by higher priority applications such as storing energy exclusively for emergency situations [28] or improving power quality [26]. The proposed SU model allows for arbitrary constraints to be embedded in the function h i (·).…”

Section: Constraints In the H I (·) Functionmentioning

confidence: 99%

Participation of an Energy Storage Aggregator in Electricity Markets

Contreras-Ocaña

Ortega‐Vazquez

Zhang

2018

2018 IEEE Power &Amp; Energy Society General Meeting (PESGM)

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An important function of aggregators is to enable the participation of small energy storage units in electricity markets. This paper studies two generally overlooked aspects related to aggregators of energy storage: i) the relationship between the aggregator and its constituent storage units and ii) the aggregator's effect on system welfare.Regarding i), we show that short-term outcomes can be Pareto-inefficient: all players could be better-off. In practice, however, aggregators and storage units are likely to engage in long rather than short-term relationships. Using Nash Bargaining Theory, we show that aggregators and storage units are likely to cooperate in the long-term. A rigorous understanding of the aggregator-storage unit relationship is fundamental to model the aggregator's participation in the market. Regarding ii), we first show that a profit-seeking energy storage aggregator is always beneficial to the system when compared to a system without storage, regardless of size or market power the aggregator may have. However, due to market power, a monopolist aggregator may act in a socially suboptimal manner. We propose a pricing scheme designed to mitigate market power abuse by the aggregator. This pricing scheme has several important characteristics:its formulation requires no private information, it incentivizes a rational aggregator to behave in a socially optimal manner, and allows for regulation of the aggregator's profit. Index TermsEnergy storage, aggregators, market power, bargaining. I. INTRODUCTIONT HE adoption of household-level energy storage systems is expected to increase rapidly in the coming years (residential energy storage grew by 405% in 2015) and become a significant share of the total U.S. energy storage deployment [1]. These storage units (SUs) have the potential of selling services to the power grid [2] but may not be able to directly do so for two main reasons: i) their individual capacities are smaller than the required minimum [3], [4]; and ii) the large number of SUs would make their management difficult even if they are allowed to participate [5]. Therefore, aggregators act as mediators between SUs and the power system [6]. A number of studies regarding the operation and market strategies of aggregators have been conducted. For instance, the authors of [5], [7] study the aggregation of a fleet of electric vehicles while [8] studies the coordination The authors are with the Department of Electrical Engineering at the University of Washington. Emails: {jcontrer, maov, zhangbao}@uw.edu.

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Section: Constraints In the H I (·) Functionmentioning

confidence: 99%

Participation of an Energy Storage Aggregator in Electricity Markets

Contreras-Ocaña

Ortega‐Vazquez

Zhang

2018

2018 IEEE Power &Amp; Energy Society General Meeting (PESGM)

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“…3 The extracted heat from the PVT system can be used for space heating, building ventilation, agricultural, industrial materials drying, etc. [22][23][24][25][26] The authors also showed that electrical efficiency decreased by 0.469% for the increase of each degree Celsius of solar cell temperature. Solar thermal collectors along with PV module make a combined form of the PVT system.…”

Section: Introductionmentioning

confidence: 92%

“…The PV module's output power and efficiency reduce if the cell temperature increases. [22][23][24][25][26] The authors also showed that electrical efficiency decreased by 0.469% for the increase of each degree Celsius of solar cell temperature. The authors investigated 13 different types of PV modules in Stuttgart, Germany and Nicosia, Cyprus and found that the variation of temperature coefficient are −0.039%/°C to −0.461%/°C, −0.403%/°C to −0.502%/°C, and −0.353%/°C to −0.456%/°C for amorphous silicon, multicrystalline, and monocrystalline PV cells, respectively.…”

Section: Introductionmentioning

confidence: 92%

Effect of high irradiation on photovoltaic power and energy

2017

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Summary Solar photovoltaics (PV) is a promising solution to combat against energy crisis and environmental pollution. However, the high manufacturing cost of solar cells along with the huge area required for well‐sized PV power plants are the two major issues for the sustainable expansion of this technology. Concentrator technology is one of the solutions of the abovementioned problem. As concentrating the solar radiation over a single cell is now a proven technology, so attempt has been made in this article to extend this concept over PV module. High irradiation intensity from 1000 to 3000 W/m2 has been investigated to measure the power and energy of PV cell. The numerical simulation has been conducted using finite element technique. At 3000 W/m2 irradiation, the electrical power increases by about 190 W compared with 63 W at irradiation level of 1000 W/m2. At the same time, at 3000 W/m2 irradiation, the thermal energy increases by about 996 W compared with 362 W at 1000 W/m2 irradiation. Electrical power and thermal energy are enhanced by about 6.4 and 31.3 W, respectively, for each 100‐W/m2 increase of solar radiation. The overall energy is increased by about 179.06% with increasing irradiation level from 1000 to 3000 W/m2. It is concluded that the effect of high solar radiation using concentrator can significantly improve the overall output of the PV module.

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“…The battery storage system is integrated with DC bus through the bi-directional converter [10,11] to provide energy back-up. The controller of DC-DC bidirectional converter is shown in Figure 9.…”

Section: Battery Charge Controllermentioning

confidence: 99%

Fuzzy Controller Based Solar PhotovoltaicSystem, Fuel Cell Integration forConditioning the Electrical Power

Dharavath

Raglend

2018

JGE

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In the present world, the solar photovoltaic system plays an essential role in the modern power systems due to inertialess, abundant and freely available in nature. But the intermittent nature of the solar photovoltaic system is unable to provide continuous power supply. The proposed system should be highly reliable, secured with sufficient quantity and quality. Providing continuous supply is a great challenge in the present power system. One such solution is to bring the reliable and flexible power by introducing the solar photovoltaic, battery storage and fuel cell system. In this work, the integration of Solar Photovoltaic, battery with a fuel cell system is considered to provide the seamless power continuously. The solar power is extracted using fuzzy control based maximum power point tracking method which can be fed with DC bus using the boost converter. The battery storage system is connected to the DC bus using the bi-directional converter. The switching pulses for the bi-directional converter are generated using a PI controller based on the battery state of the charge. The Proton Exchange Membrane (PEM) fuel cell is used as a secondary source to maintain the flexible power at the DC bus system. The DC bus power can be fed to the load and the excessive power can be integrated with the grid through the synchronization process. The proposed structure stabilizes the DC link voltage and the grid voltages even under dynamic conditions of intermittent solar power and load variations

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Single‐phase solar PV system with battery and exchange of power in grid‐connected and standalone modes

Cited by 50 publications

References 15 publications

Participation of an Energy Storage Aggregator in Electricity Markets

Participation of an Energy Storage Aggregator in Electricity Markets

Effect of high irradiation on photovoltaic power and energy

Fuzzy Controller Based Solar PhotovoltaicSystem, Fuel Cell Integration forConditioning the Electrical Power

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