Stability robustness analysis and its improvement for an industrial microgrid

Abstract

Recent trends indicate an increased interest toward microgrids and distributed energy resources (DERs) by several industries due to the numerous technical advantages and environmental benefits. However, the planning and design of DER installations at industrial sites need a more detailed and careful investigation. This paper presents a critical examination of the stability robustness measures of a microgrid at an industrial site. It is shown that the stability robustness of the plant can deteriorate as the number of onsite DER installations increase, making the industrial power system more vulnerable to instability. The key parameters of the system that affect the stability robustness of such distribution networks are identified and their significance on system robustness is studied. Finally, it is shown that the system robustness can be improved by employing the framework of Flexible Distribution of EneRgy and Storage resources (FDERS).