Conference Proceedings

PV Controller Modification and its Impact on Assisting PV Penetration

VAV Mohanan, RJ Evans, I Mareels, RR Kolluri

e-Energy 2020 - Proceedings of the 11th ACM International Conference on Future Energy Systems | ACM | Published : 2020

Abstract

Large-scale penetration of grid-following inverters into the electricity network presents various technical challenges to grid reliability. It is well-known that the ability of a grid to maintain a stable frequency is inhibited by adding traditional grid-tied photovoltaic (PV) generators. In this work, a detailed model of a simplified grid is presented, and it is shown that the proportion of PV generation and instability are positively correlated. The main instability phenomenon is captured by a Hopf Bifurcation in the field dynamics of the synchronous generator. Such a Hopf bifurcation severely constricts the feasible operating domain of the grid and may hinder normal operation. Modifying t..

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