Analysis and simulation tools for short circuit dynamic characteristics of photovoltaic power plants

摘要

One of the main trends in the development of solar photovoltaic (PV) grid-connected technology is the grid code compliance assessment for grid connection of PV power plant. But it is difficult to obtain the dynamic performance of the PV power plant under different operation scenarios through field test. In particular, it is costly to obtain the characteristics of the point of connection of PV power plant. The paper introduces support tools for simulation-based dynamic characteristics analysis of grid connection of PV power plant. Firstly, the function and flow chart of the developed support tools is described in detail. Then, the photovoltaic inverter detailed modelled. Finally, the support tools are developed based on the Powerfactory C++ API and Python package. The tools have many automation features that can be applied to online services which have be installed in the clean energy big data center. Test results have illustrated that the support tools can reflect dynamic performance of grid connection of PV power plant and can provide a decision support for the renewable energy priority scheduling.