Energy and power quality measurement for electrical distribution in AC and DC microgrid buildings

Gerber, Daniel L.; Ghatpande, Omkar A.; Nazir, Moazzam; Heredia, Willy G. Bernal; Feng, Wei; Brown, Richard E.

doi:10.1016/j.apenergy.2021.118308

Title: Energy and power quality measurement for electrical distribution in AC and DC microgrid buildings

Journal Article · Tue Dec 28 00:00:00 EST 2021 · Applied Energy

DOI:https://doi.org/10.1016/j.apenergy.2021.118308· OSTI ID:1847263

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^[2]; Feng, Wei ^[1]; Brown, Richard E. ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
National Renewable Energy Lab. (NREL), Golden, CO (United States)

Today's selection of DC microgrid buildings features a diverse set of electrical topologies and turnkey solutions, each with specific design trade-offs and optimizations. Designers desperately need standardized metrics and procedures for measurement and verification (M&V) to analyze and compare the advantages of each DC solution to traditional AC building networks. This work develops M&V procedures for quantifying and comparing the energy efficiency and power quality in buildings. To calculate full-building efficiency, this work introduces the measurement-informed modeling method, a procedure that develops and refines a building's energy model with metered data. To quantify power quality, this work defines a new voltage quality index that applies to both AC and DC buildings. This article describes the equipment, instrumentation, and operation necessary to calculate the efficiency and power quality. It then demonstrates these methods with a set of field tests. These M&V procedures can ultimately be used to compare and improve the efficiency and power quality of various DC topologies.

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Research Organization:: National Renewable Energy Lab. (NREL), Golden, CO (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office

Grant/Contract Number:: AC36-08GO28308; AC02-05CH11231

OSTI ID:: 1847263

Alternate ID(s):: OSTI ID: 1894072

Report Number(s):: NREL/JA-5500-80733; MainId:77517; UUID:079dc33e-9084-47ba-ae5c-e73621bbe064; MainAdminID:63953

Journal Information:: Applied Energy, Vol. 308; ISSN 0306-2619

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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