Optimal Sizing of an rSOC-Based Renewable Microgrid

Sorrentino, Marco; Adamo, Antonio; Nappi, Gianmarco

doi:10.1016/j.egypro.2018.12.063

Cited by 18 publications

(6 citation statements)

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“…The increasing link between the on-site generation of renewable energy and electric mobility, in particular, maximizes the advantages of hydrogen as a carrier and a means of energy storage to meet hydrogen demand. The residential electricity demand through new clean microgrids will significantly leverage the techno-economic viability of renewable hydrogen generation [29,30]. The analysis of the economics of fuel cell vehicles has thus become particularly important [31].…”

Section: Subitem Percentage (%)mentioning

confidence: 99%

Research on Economic and Operating Characteristics of Hydrogen Fuel Cell Cars Based on Real Vehicle Tests

et al. 2021

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With the increase of the requirement for the economy of vehicles and the strengthening of the concept of environmental protection, the development of future vehicles will develop in the direction of high efficiency and cleanliness, and the current power system of vehicles based on traditional fossil fuels will gradually transition to hybrid power. As an essential technological direction for new energy vehicles, the development of fuel cell passenger vehicles is of great significance in reducing transportation carbon emissions, stabilizing energy supply, and maintaining the sustainable development of the automotive industry. To study the fuel economy of a passenger car with the proton exchange membrane fuel cell (PEMFC) during the operating phase, two typical PEMFC passenger cars, test vehicles A and B, were compared and analyzed. The hydrogen consumption and hydrogen emission under two operating conditions, namely the different steady-state power and the Chinese Vehicle Driving Conditions-Passenger Car cycle, were tested. The test results show the actual hydrogen consumption rates of vehicle A and vehicle B are 9.77 g/kM and 8.28 g/kM, respectively. The average hydrogen emission rates for vehicle A and vehicle B are 1.56 g/(kW·h) and 5.40 g/(kW·h), respectively. By comparing the hydrogen purge valve opening time ratio, the differences between test vehicles A and B in control strategy, hydrogen consumption, and emission rate are analyzed. This study will provide reference data for China to study the economics of the operational phase of PEMFC vehicles.

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Section: Subitem Percentage (%)mentioning

confidence: 99%

Research on Economic and Operating Characteristics of Hydrogen Fuel Cell Cars Based on Real Vehicle Tests

et al. 2021

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“…The hybrid system was able to moderately increase the microgrid's self-sufficiency (from 52.1% to 58.0%); economic analysis was not conducted. Sorrentino et al [53] present a microgrid consisting of an rSOC and hydrogen storage, as well as PV and a vertical axis wind turbine, for the supply of power to an apartment complex. The use of additional short-term storage was recommended but not modelled.…”

Section: Hydrogen Energy Storage For Microgrids -Existing Workmentioning

confidence: 99%

Suitability of energy storage with reversible solid oxide cells for microgrid applications

Hutty

Dong

Brown

2020

Energy Conversion and Management

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Reversible solid oxide cells (rSOCs) offer the prospect of long term bulk energy storage using hydrogen or methane fuel. Solid oxide technology, whilst less mature than alkaline and PEM technology, offers superior conversion efficiency -especially for electrolysis.Furthermore, the possibility of using the cells reversibly means that separate 'power-to-gas' and 'gas-to-power' components are not needed, potentially reducing costs. In this work, we consider the suitability of energy storage using rSOCs and/or battery storage for a microgrid consisting of houses equipped with solar PV generation. An agent-based simulation model is developed to assess the performance of such a microgrid. The model enables the microgrid's self-sufficiency to be quantified, and hence the possible cost savings through avoided imports of grid power. Sizing of microgrid components is optimised to determine the most cost-effective design capable of achieving given selfsufficiency ratio. Case studies are considered for England and Texas. Initially, designs are considered with hydrogen energy storage only; subsequently, hybrid energy storage is considered, with a community scale battery working alongside the rSOC. Results suggest that payback periods for pure rSOC systems tend to be unfavourable. However, if prices fall to levels foreseen in the literature, a system designed to achieve 50% grid-independence could pay back its investment costs within 20 years. Systems designed for Texas need relatively less storage, owing to the good year-round solar resource; as such, payback time in Texas is superior to the UK. Hybrid storage with battery + rSOC is found to be preferable to battery only systems when (i) high SSR is required and (ii) large over-capacity of PV generation is not possible.

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“…The optimization analysis was particularly focused on the simulation of a specific case study in the location of Policastro Bussentino (SA) (see Table 1), characterized by relatively high average contributions of insolation and wind. As for the former yield, the following formula was adopted [22]:…”

Section: Pv Yield Estimationmentioning

confidence: 99%

“…In order to cope with the first assumption above, more detailed sizing analyses shall be performed, particularly aimed at assessing the opportunity of integrating the proposed rSOC unit with appropriate hybridizing devices, such as super-capacitors and batteries, to suitably manage highly fluctuating power requests [22]. This aspect is of particular relevance as it is well known how abrupt and frequent changes in operating condition may be very detrimental to SOC units as a consequence of the induced dangerous thermal-stresses [34].…”

Section: Modeling Of Wind Turbine Powermentioning

confidence: 99%

“…As clarified later on, the main novelty of the current article with respect to the above contributions lies in the optimization task, which was proven suitable to simultaneously address optimal system sizing and proper islanded-oriented and resilient management of the rSOC system that the renewable microgrid is integrated with. Moreover, when compared with a previous contribution from the authors [22], the current paper focuses on the development of an rSOC microgrid for residential uses, thus referring to the typical electric load demand of households while suitably accounting for the impact of weather uncertainties (e.g., clouding effects, wind speed limits) on renewables power contribution. Moreover, substantial discussion is provided on the compromise to be found between self-sufficiency targets and hydrogen tank size exploitation levels.…”

Section: Introductionmentioning

confidence: 99%

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Self-Sufficient and Islanded-Oriented Design of a Reversible Solid Oxide Cell-Based Renewable Microgrid

2019

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This article presents the development of a constrained optimization algorithm, whose scope is to support the preliminary design of a renewable microgrid, integrating solar panels and wind turbines with reversible solid oxide cells. The motivations behind this research activity lie in the increasing interest in renewable-based production and on-site storage of hydrogen, and its aim is to help this energy vector spread worldwide and in as many industrial and residential sectors as possible within a reasonably short timeframe. To this end, suitable models were developed by referring to the most relevant literature and by introducing some specific simplifying assumptions. Such an approach allowed the setting-up of a multi-variable constrained optimization task, whose outcomes correspond to the most techno-economic effective plant configuration with respect to assigned design criteria. The optimum solution was particularly sought via the generalized reduced gradient method, aimed at determining renewable plants sizes under the constraint that the final stored hydrogen level is brought back to the initial value after one year. The results highlight that an interesting payback time of about 10 years can be attained, while guaranteeing that the optimal configuration holds promising resiliency and islanded-use capabilities (such as almost weekly self-sufficiency) via smart over-the-year charge-sustaining management of the designed hydrogen storage tank. In this way, it was possible to simultaneously address, via the specific optimization problem formulation, the interconnected needs of optimally designing system components in terms of installed power, and the proper management of the reversible solid oxide cell unit.

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Optimal Sizing of an rSOC-Based Renewable Microgrid

Cited by 18 publications

References 4 publications

Research on Economic and Operating Characteristics of Hydrogen Fuel Cell Cars Based on Real Vehicle Tests

Research on Economic and Operating Characteristics of Hydrogen Fuel Cell Cars Based on Real Vehicle Tests

Suitability of energy storage with reversible solid oxide cells for microgrid applications

Self-Sufficient and Islanded-Oriented Design of a Reversible Solid Oxide Cell-Based Renewable Microgrid

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