Publications

Showing 74 results for Author: Ben B. Ollis

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  • Jun, 2024

    Journal

    Flexible dynamic boundary microgrid operation considering network and load unbalances

    Flexible microgrids with dynamic boundaries have recently been introduced in the literature. With the ability to reconfigure the topology of the microgrids dynamically through remotely controlled switches, flexible microgrids with dynamic boundaries can further improve the resiliency and energy efficiency of microgrids with distributed energy resources (DERs). This paper f…

  • Apr, 2024

    Journal

    Distributed Energy Management for Networked Microgrids Embedded Modern Distribution System Using ADMM Algorithm

    This paper proposed an distributed energy management for modern distribution systems with various actively interfaced participants, such as distributed energy resources (DERs), flexible loads, and different kinds of microgrids. Given different ownerships, objectives, requirements on autonomy and data privacy, a multi-objective optimization model considering various network…

  • Apr, 2024

    Conference Paper

    Development of Hardware-in-the-loop Microgrid Testbed

    A hardware-in-the-loop (HIL) microgrid testbed for the evaluation and assessment of microgrid operation and control system has been presented in this paper. The HIL testbed is composed of a real-time digital simulator (RTDS) for modeling of the microgrid, multiple NI CompactRIOs for device level control, a prototype microgrid energy management system (MicroEMS), and a rela…

  • Apr, 2024

    Conference Paper

    Networked Microgrids for Improving Economics and Resiliency

    In this paper, we propose networked microgrids to facilitate the integration of variable renewable generation and improve the economics and resiliency of electricity supply in microgrids. A new concept, probability of successful islanding (PSI) is used to quantify the islanding capability of a microgrid considering the uncertainty of renewable energy resources and load as…

  • Feb, 2024

    Conference Paper

    Evaluating Recursive Blind Forecast Against API and Baseline: A Puerto Rican Case Study on Solar Irradiance for Normal and Extreme Weather

    This paper leverages ongoing work in a community microgrid in Adjuntas, Puerto Rico to forecast global horizontal irradiance (GHI) and compare performance in normal and extreme weather. Given a positive correlation of 0.98 between GHI and PV power, forecasting GHI can be an effective, indirect forecast of photovoltaic (PV) power, especially in microgrids where the end-user…

  • Dec, 2023

    Journal

    Protection schemes used in North American microgrids

    This study reviewed existing conventional and nonconventional protection schemes for grid‐connected and islanded mode operations in North American microgrid projects. The microgrid projects investigated in this study used different types of distributed energy resources (DERs) and integrated hydropower/diesel generators, gas/steam/wind turbines, and photovoltaic systems wit…

  • Dec, 2023

    Journal

    Reducing the computational burden of a microgrid energy management system

    As renewable technology advances and decreases in cost, microgrids are becoming an appealing means of distributed generation both for isolated communities and integrated with existing electrical grid systems. Due to their small size, however, microgrids may have financial limitations which preclude them from using commercial software to optimize control of their assets. Op…

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