Overview of fault ride-through requirements for photovoltaic grid integration, design and grid code compliance

Abstract

The integration of photovoltaic systems into the power grid and their dynamics through grid faults became an essential concern in grid codes' emerging requirements. Accordingly, fault ride-through of the grid-connected PV system functionality and regulation became the most critical grid codes considerations. Countries have come up with several stringent requirements for grid integration of renewable energy sources. This paper identified many FRT stipulations under grid fault conditions in various grid codes. The study examines the impact of PVs on the grid code development, offering a detailed and classified viewpoint on the FRT regulations and providing valuable details about the FRT capabilities of a common grid code to be used and referred. Consequently, this work proposes several grid-level design considerations to fulfill FRT requirements.