Comparative overview of voltage sags standards: IEEE 1564 versus Brazilian regulatory procedures

Two important short-term voltage variation monitoring standards have recently been updated: IEEE 1564 and Distribution Procedures Module 8 (PRODIST) of the Brazilian National Regulatory Agency (ANEEL). The present work deals with a comparative analysis of both regulatory procedures, within the scope of the indices and reference standards implemented for the case of voltage sags. In order to achieve such a comparison, case studies of voltage sags are studied. Thus, in addition to showing the main updates and differences between the standardizations, the limitations on the classification of events by each case study case are also highlighted.