Power quality analysis of HV and MV customers through monitoring of distribution substations

This paper discusses a methodology of analysis of the power quality in high voltage and medium voltage EDP´s Customers based on the monitoring results of the distribution network substations, more precisely through voltage monitoring of their high voltage and medium voltage busbars. The issues associated to this methodology are explored, namely, its configuration, application, as well as results. There are presented the results of some studies developed according to this methodology, as well as the adopted actions to each case.