Campus Microgrid-Design and Secure Operation to Prevent Overvoltage

Abstract

This document proposes methodologies for the design and operation of a microgrid (MG) for the main campus of the University of New Haven. In this MG, a battery power storage system (BESS), photovoltaic production systems (PV) and controllable loads are included. Intense penetration of the PV may cause overvoltage problems in this MG. A new operational strategy is being considered by coordinating the BESS, PV, and loads to prevent overvoltages and ensure this MG’s safe operation. In this operational strategy, subsidence regulators have been implemented to provide appropriate references to PV and BESS to maintain MG voltage within the safety range. PV output may be reduced to ensure voltage security. The work was audited according to a variable solar irradiation scenario.