Energy Efficiency and Power Quality Indicators of a Micro Grid. Case study: Lighting Systems

The current development of Micro - Grids, combined with the pressure enforced by national legislation as a direct effect of the Directive 2012/27/EU and the Directive 2018/844/EU leads to a new set of problems for the end-users, under the form of optimizing the Energy Efficiency (Energy Performance Indicators – EPIs) – Power Quality relationship. As it has been already proven by other studies, certain Energy Performance Improvement Actions (EPIAs) can and will influence the Power Quality Indices (PQIs) of an electrical grid. In this paper, the changes induced in the PQIs of a Micro Grid by the implementation of an EPIA regarding the lighting systems have been analyzed, in order to determine the function that would best describe the variation of the EPI – PQI relationship.