![]() ![]() Inverter functionalities in a microgrid setting. NREL and San Diego Gas & Electric are also working to understand the use of grid-forming Use NREL's power hardware capabilities remotely. This will allow San Diego Gas & Electric to NREL is running this model on a combination of local real-time digital simulatorsĪnd real-time digital simulators at San Diego Gas & Electric's Integrated Test Facility, With regard to disconnection and reconnection of the microgrid to the utility. Hardware and to the virtual components to test the system's performance, particularly They are then interfacing an actual microgrid controller to the power While other circuit components are virtually represented in a model on real-time digital The microgrid by employing power and controller hardware to represent the distributedĮnergy resources-including a large PV plant, energy storage systems, and diesel generators. Researchers are constructing a scaled model of to model a microgrid inīorrego Springs, California, and evaluate how a microgrid controller with advancedįunctionality would perform there. NREL is collaborating with the San Diego Gas & Electric Co. Technology Certification Program Project of the Year Award for Energy and Water. ![]() As a result, the project team received the 2016 Environmental Security High-penetration system at Miramar was demonstrated in December 2015 and again in Grid-tied and islanded operation of the fully installed, Microgrid functionality was initially tested at NREL's Energy Systems Integrationįacility in 2014 using a Parker battery inverter, AE PV inverters, and programmableĭC power supplies to emulate the battery and PV arrays and a programmable AC power Islanding capability, and reduce energy costs. The goals were to demonstrate energy security, provide ![]() The project included integration of a central controller with PV inverters, a zincīromide flow battery energy storage system, utility service entrance equipment, metering,Īnd building electrical loads. NREL supported Raytheon on a Department of Defense Environmental Security TechnologyĬertification Program microgrid demonstration at Marine Corps Air Station Miramar. High power quality during a black start onto a load. Resultsĭemonstrated the ability of the CUBE to provide comparable load step response as aĭiesel generator, to maintain high power quality during transitions from diesel generatorĪs a grid-forming unit to CUBE as a grid-forming unit and vice versa, and to provide Additional tests were performed to demonstrateĬUBE power quality during load steps, mode transitions, and a black start. To a baseline diesel-generator-only system. The CUBE was tested to demonstrate fuel savings as well as power quality relative Up to provide a flexible platform that can be modified to meet specific needs. Protection necessary to integrate various power sources and was built from the ground The CUBE provides the power conversion, distribution, and The cornerstone of the hybrid power system is the Consolidated Utilityīase Energy (CUBE) system. Army Rapid Equippingįorce and the Expeditionary Energy and Sustainment Systems to provide power to forward NREL developed a PV-battery-diesel hybrid power system for the U.S. Hybrid microgrid testing, including the distribution integration of wind turbines, PV, dynamometers, loads, and energy storage Programmable DC power supplies to emulate photovoltaic (PV) arrays and battery banks Programmable AC power supplies (grid simulators) to emulate the grid-tie as well as Power hardware-in-the-loop testing of microgrid hardware Microgrid system modeling and simulation on timescales of electromagnetic transientsĭevelopment of power electronic converters and control algorithms for microgrid integrationĬontroller hardware-in-the-loop testing, where the physical controller interacts with a model of the microgrid and associated Interruptions or, for remote areas, where there is no connection to the larger grid. InĪddition, advanced microgrids allow local assets to work together to save costs, extendĭuration of energy supplies, and produce revenue via market participation. Renewables, and storage-to keep the local grid running even when the larger grid experiences Improve customer reliability and resilience to grid disturbances.Īdvanced microgrids enable local power generation assets-including traditional generators, It can connect andĭisconnect from the grid to operate in grid-connected or island mode. A microgrid is a group of interconnected loads and distributed energy resources thatĪcts as a single controllable entity with respect to the grid. ![]()
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