Pv Generation Monitoring Using Calculated Power Flow From Μpmus

Abstract

The use of PMUs (Phasor Measurement Units) to monitor microgrids has grown over the last years, due to its ability to offer accurate and synchronized voltage, current, and frequency measurements. In many microgrids, the PMUs operate without a current transformer (CT) and measure only voltage phasors values. We propose a power flow (PF) calculation using μPMU (or micro-PMU) voltage measurements, to allow these devices to indirectly monitor photovoltaic (PV) generation or electric loads. We used the μPMU data from a case study at the Centro Politécnico of the Universidade Federal do Paraná -UFPR campus, Brazil. We compared the calculated power flow with the power measured by a conventional power meter. We showed that this "virtual CT" approach with increased time resolution from μPMU can be particularly useful to aid in the detection of events, PV generation monitoring, and non-intrusive load monitoring (NILM) in general.