Monitoring and Analysis of Two Grid Connected PV Systems
Résumé
In this paper, two grid connected photovoltaic systems are studied and monitored for fault detection ad predictive reliability. The first PV grid, is at CNRS-PROMES laboratory in Perpignan, built in 2001 with 3 PV arrays named "Shed","Brise soleil","Mur rideau") connected to the grid thanks to many inverter of different power (3 of 4KWC and 2 of 2.5KWC). The second one is at CNRS-LAAS in Toulouse with a power of 100kWc. It is composed of a facade of 36kWc PV array and a roof of 64kWc PV array. To observe the overall effect of these PV systems, a monitoring device is installed on both installations. Adapted to all kinds of equipment, it can be installed on any inverter or PV array. This monitoring system is non intrusive and uses Transmission Control Protocol/Internet Protocol (TCPIP) for data sending (DC bus, AC bus, environmental data). This paper begins by a description of the monitoring system and PV systemsThen, from these measurements, a performance analysis of the photovoltaic power generation in building is presented. PV arrays are simulated using I-V characteristics of the cell implemented under Matlab/Simulink. Simulation results and experimental data are then compared in order to carry out a fault detection and an energy production estimation. Finally, this work will enable us to predict the behavior of these PV systems thanks to predictive command.
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