Automatic Residential Load Offsetting via Battery Energy Storage System

Darby Hudnall, Lindsi Jones, Joseph Crain, Chad Ekre, Jed Brown

Abstract


Electric power delivery is based on a real-time supply and demand process. Residential consumers using electrical grid, off-grid, and photovoltaic solar collection systems can benefit from secondary energy storage. Storing primary grid supplied electrical power or integrating a battery energy storage system (BESS) gives a homeowner the ability to manipulate household electrical load timing that best suits their daily and seasonal needs. Current trends indicate that electrical utility companies will primarily set time-of-use (TOU) billing schedules in most US markets.  Under these plans electric rates shift daily and seasonally depending on the demand of the electrical utility grid. The goal of this project is to develop a convenient system that allows homeowners to optimize their electrical usage through an automated controller and BESS. Homeowners on the electrical grid can effectively reduce their monthly bill by shifting when they use electricity throughout the day. An energy controller dramatically simplifies the process by automatically making load shifts, to and from the BESS. Mechatronics engineering fundamentals will be utilized to build a successful product.  Mechanical engineering components include relay switches, motors, 3D-printed parts, and automated functionality.  Computer engineering and controls are also central to the design with the use of a coded Programmable Logic Controller (PLC).



Keywords


Energy Storage, Optimal Load Shifting, Smart Grid

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