Abhatoo - Centre Nationale de Documentation

In this article, the presented work concerns the photovoltaic energy, which stands out as a real solution to the future energy production: a very low-polluting and friendly production of the environment. The goal of this work is the design and modeling a photovoltaic (PV) system connected to the network of electrical distribution and transmission, equipped with the malfunction detection blocks. The studies have focused on the injection of a power of 16 kW, produced by a PV panel field on the medium voltage electrical network (25 KV). To the reliability of the injection system on the network and minimize power losses, we have inserted blocks that control the opening and closing of power switches of the DC / AC converter and synchronize the phase, the amplitude as well as the frequency of the voltage and the current injected on the power grid. The results show that the designed system detects the malfunction of the network side system (voltage dips, phase shedding, frequency fluctuation, unbalanced threephase system), the field side of PV panel (distrust converters ...) and ensures the injection of electrical energy on the network during operation of the PV system.