Multiyear microgrid data from a research building in Tsukuba, Japan

Vink, Karina; Ankyu, Eriko; Koyama, Michihisa

doi:10.1038/sdata.2019.20

Cited by 15 publications

(16 citation statements)

References 15 publications

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“…In order to define the worst ramp-down event of PV power variations, a real-world dataset of measured PV generation was analyzed in this study. The dataset is extracted from microgrid data of a research building in Tsukuba, Japan [52]. The dataset recorded the actual output power of a 90.84 kW PV system starting from 1 January 2015 to 24 April 2018 [52].…”

Section: Dynamic Simulationmentioning

confidence: 99%

“…The dataset is extracted from microgrid data of a research building in Tsukuba, Japan [52]. The dataset recorded the actual output power of a 90.84 kW PV system starting from 1 January 2015 to 24 April 2018 [52]. With a high 1 s time-step resolution, this dataset conserves all essential dynamic characteristics of PV power fluctuations.…”

Section: Dynamic Simulationmentioning

confidence: 99%

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Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Lee

Zafar

et al. 2021

Energies

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Stand-alone microgrids integrating renewable energy sources have emerged as an efficient energy solution for electrifying isolated sites, such as islands and remote areas. The design of a microgrid involves various influential factors, including technological development, economic feasibility, and environmental impacts, based on the conditions and regulations of a particular site. This paper proposes a comprehensive microgrid design framework based on power system analysis and techno-economic analysis. The obtained optimal microgrid configuration satisfies both the design objective and power system performance regulations. The proposed design approach focuses on using practical data and can adapt to any microgrid design problems based on the local characteristics of a specific site. The practicality and effectiveness of the design framework are validated by applying it to the design of a stand-alone microgrid for Deokjeok Island in South Korea. The case study results justify the importance of considering site-specific characteristics and the impacts of power system conditions on the optimal microgrid design.

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Section: Dynamic Simulationmentioning

confidence: 99%

Section: Dynamic Simulationmentioning

confidence: 99%

Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Lee

Zafar

et al. 2021

Energies

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show abstract

“…For example, utility smart meter data, HVAC control system data, lighting system data, and submetered electricity and gas data are often obtained on a research-project specific data, and restricted by NDAs or other data sharing restrictions. There is a nascent body of shared operational datasets for buildings, including for example [8][9][10] .…”

Section: Background and Summarymentioning

confidence: 99%

Building fault detection data to aid diagnostic algorithm creation and performance testing

et al. 2020

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It is estimated that approximately 4-5% of national energy consumption can be saved through corrections to existing commercial building controls infrastructure and resulting improvements to efficiency. Correspondingly, automated fault detection and diagnostics (FDD) algorithms are designed to identify the presence of operational faults and their root causes. A diversity of techniques is used for FDD spanning physical models, black box, and rule-based approaches. A persistent challenge has been the lack of common datasets and test methods to benchmark their performance accuracy. This article presents a first of its kind public dataset with ground-truth data on the presence and absence of building faults. This dataset spans a range of seasons and operational conditions and encompasses multiple building system types. It contains information on fault severity, as well as data points reflective of the measurements in building control systems that FDD algorithms typically have access to. The data were created using simulation models as well as experimental test facilities, and will be expanded over time.

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“…As far as energy storage is concerned, there are many other operating strategies. In residential PV-battery storage systems, the operation of the battery can be optimized to achieve an economic optimum [32,33], such as lowest electricity bill, when variables such as varying electricity tariff are taken into consideration. Another valuable strategy would be maximizing battery life [34,35] while not compromising too much of the other objectives such as self-consumption.…”

Section: Conclusion and Future Prospectsmentioning

confidence: 99%

Solar PV-Battery-Electric Grid-Based Energy System for Residential Applications: System Configuration and Viability

et al. 2019

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Distributed renewable energy share increase in electricity generation is creating challenges for the whole power system, due to its intermittent and nonprogrammable nature. Energy storage has the potential to solve those issues although its technical, economic, and environmental impact is up for debate. The paper presents a study about a PV-battery energy storage system installed in a grid-connected residential apartment in the Green Energy Laboratory at Shanghai Jiao Tong University, China. Daily experimental results show how the presence of energy storage reduces the midday feed-in of excess PV power and the evening peak demand, providing benefits to the distribution network in terms of reduced voltage swings and peak load. Considering the Chinese context, an economic analysis is carried out to assess the profitability of residential PV-battery systems, using the net present value as the economic indicator of an 18-year investment in which the battery pack is replaced twice (6 life years). The analysis shows that such system is not economically viable due to a combination of low electricity prices, valuable PV incentives, and high technology costs. However, considering a future scenario of doubled electricity tariff, halved export tariff, and falling technology costs (-66% battery and -17% PV and inverter), PV-battery investment becomes profitable and shows more resilience to future scenarios than PV-only investment.

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Multiyear microgrid data from a research building in Tsukuba, Japan

Cited by 15 publications

References 15 publications

Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Building fault detection data to aid diagnostic algorithm creation and performance testing

Solar PV-Battery-Electric Grid-Based Energy System for Residential Applications: System Configuration and Viability

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