REVIEW PAPER ON THE GRID CONNECTED PV SYSTEM AND RELATED PROBLEMS

As the increasing installation of grid - connected PV systems, especially large systems in the order of megawatts, might lead to some operat ional problems in the electric network. Such negative impacts include power and voltage fluctuation problems harmonic distortion, malfunctioning of protective devices and so on. This may still prevent further share of grid - connected PV system in electricit y market. Therefore, studying the possible impacts of PV systems on the electric network is and will be becoming an important issue and receiving a lot of attention from both researchers and electric utilities. For example, different algorithms are develop ed to mitigate the harmonics injected into the electric network. Active power filter is one of the most used methods