Evaluation of Storage Energy Requirements for Constant Production in PV Power Plants

Beltrán, Héctor; Bilbao, Endika; Belenguer, E.; Etxeberria-Otadui, I.; Rodriguez, P.

doi:10.1109/tie.2012.2202353

Cited by 175 publications

(76 citation statements)

References 37 publications

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“…Nevertheless, it also behaves in a variable and discontinuous manner [2] that is usually difficult to predict, particularly in the long term. The electrical grid system is not able to store large quantities of energy by itself, and stable operation can, therefore, only be achieved by matching generation with demand [3]. Large amounts of unscheduled power fluctuation owing to RESs have become an important and challenging issue for grid operators, and it might consequently not be possible to inject all the energy generated by renewable sources into the grid [4].…”

Section: Introductionmentioning

confidence: 99%

Control Scheme of a Concentration Photovoltaic Plant with a Hybrid Energy Storage System Connected to the Grid

Roncero‐Sánchez

Torres²,

Vázquez

2018

Energies

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Abstract:In the last few decades, renewable energy sources (RESs) have been integrated into the electrical grid in order to curb the deficiency of energy owing to, among other factors, the depletion of fossil fuels and the increasing awareness of climate change. However, the stochastic nature of these sources, along with changes in levels of energy consumption, signifies that attention now needs to be paid for energy storage systems (ESSs). One of the most promising RESs is concentration photovoltaic (CPV) energy, owing to the high efficiency obtained and its sustainability regarding environmental issues. However, as CPV systems work only with direct solar radiation, they require ESSs in order to smooth the variations in the energy generated. This paper deals with the integration into the grid of a CPV plant that employs a hybrid ESS (HESS) based on ultracapacitors and batteries. The HESS allows the complete system to inject a constant active power level into the grid and thus flatten the profile of the energy generated. This goal is achieved by using a power electronic topology based on various DC-DC converters and a DC-AC converter, both of which share the same DC link. The control system is tailored in order to decouple the active-power and the reactive-power injections. Simulation results obtained using PSCAD/EMTDC (Power System Computer Aided Design/Electromagnetic Transient Direct Current) show the resulting performance of a 200 kW CPV plant with a hybrid ESS.

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Section: Introductionmentioning

confidence: 99%

Control Scheme of a Concentration Photovoltaic Plant with a Hybrid Energy Storage System Connected to the Grid

Roncero‐Sánchez

Torres²,

Vázquez

2018

Energies

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“…An energy management system for a battery-backed grid-connected PV system was explored in order to maximize daily electricity benefit while reducing the power injection to the grid [11]. An energy management strategy was proposed to participate in the electricity market with sizing analysis [12,13]. A genetic algorithm (GA) was used to find the optimal location and sizing of grid-connected PV systems [14].…”

Section: Introductionmentioning

confidence: 99%

Technoeconomic analysis of a grid-connected PV and battery energy storage system considering time of use pricing

Nayak¹,

Nayak²

2018

Turk J Elec Eng & Comp Sci

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This paper examines the technoeconomic optimization of the size of valve-regulated lead acid-type battery energy storage systems (BESSs) in order to minimize the total annual operating cost of a grid-connected photovoltaic BESS within the framework of system operational constraints, using the improved harmony search algorithm. The electricity cost is calculated using time of use pricing, where the price of energy varies according to the load demand.The concept of feed-in-tariff is discussed, where power can be bought from and sold back to the grid. A sensitivity analysis is performed for three cases: without storage, with storage and without peak load shaving, and with both storage and peak load shaving. The total annual operating cost of the system is calculated for all three cases and cost savings are compared. The simulations, performed with MATLAB, show a good optimization performance.

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“…In particular, the intermittent nature of the power produced by renewable energy sources (RESs) is threatening the stability of power systems, increasing the risk of instabilities and failures. In order to overcome this issue, various studies have proposed the exploitation of energy storage system (ESS) technologies for the management of RES power fluctuations [2][3][4][5][6][7]. The proposed solutions include the use of ESSs for the provision of spinning reserves, frequency and voltage regulation, peak shaving, and load following.…”

Section: Introductionmentioning

confidence: 99%

Aging Cost Optimization for Planning and Management of Energy Storage Systems

et al. 2017

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In recent years, many studies have proposed the use of energy storage systems (ESSs) for the mitigation of renewable energy source (RES) intermittent power output. However, the correct estimation of the ESS degradation costs is still an open issue, due to the difficult estimation of their aging in the presence of intermittent power inputs. This is particularly true for battery ESSs (BESSs), which have been proven to exhibit complex aging functions. Unfortunately, this collides with considering aging costs when performing ESS planning and management procedures, which are crucial for the exploitation of this technology. In order to overcome this issue, this paper presents the genetic algorithm-based multi-period optimal power flow (GA-MPOPF) procedure, which aims to economically optimize the management of ESSs by taking into account their degradation costs.The proposed methodology has been tested in two different applications: the planning of the correct positioning of a Li-ion BESS in the PG& E 69 bus network in the presence of high RES penetration, and the definition of its management strategy. Simulation results show that GA-MPOPF is able to optimize the ESS usage for time scales of up to one month, even for complex operative costs functions, showing at the same time excellent convergence properties.

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Evaluation of Storage Energy Requirements for Constant Production in PV Power Plants

Cited by 175 publications

References 37 publications

Control Scheme of a Concentration Photovoltaic Plant with a Hybrid Energy Storage System Connected to the Grid

Control Scheme of a Concentration Photovoltaic Plant with a Hybrid Energy Storage System Connected to the Grid

Technoeconomic analysis of a grid-connected PV and battery energy storage system considering time of use pricing

Aging Cost Optimization for Planning and Management of Energy Storage Systems

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