High penetration of renewable energy sources (RES) leads to new challenges for protection devices. Protection schemes are typically designed according to the dynamic behavior of rotating machines as generation sources

while the RES dynamic response

mainly governed by inverters

is not considered. Consequently

some relevant algorithms of transmission line protection are experiencing challenges because of the fact that magnitude and phase angle comparison

amount of negative-sequence

and short-circuit current level are affected by the RES. Therefore

an in-depth study of this issue is necessary

one which considers the main causes and new methodological criteria solutions. This work presents an extensive literature review of the evaluation of electrical protection performance and the effects of RES connected to a power grid through inverters. Bibliographic data on many representative publications related to this topic are obtained to show the current research lines and their proposed solutions. In addition

this work identif ies the main protection functions affected and describes the new protection schemes that consider RES. Finally

an analysis and discussion of the selected bibliography are presented.