Development of Detection Platform for Grid-Connected Photovoltaic Inverters

To ensure both performance and security of grid-connected photovoltaic inverters(PVI), a detection platform for grid-connected PVI is researched. The testing method and procedures of grid-connected PVI are analyzed and the development course of this detection platform is described in detail. The detection platform consists of control computer, data acquisition system, RS 485 and GPIB system. In this platform, the solar-cell panel is simulated by programmable DC source, the power grid characteristics of power grid by programmable DC source and the load characteristic by programmable controlled RLC load. The whole detection system is controlled by LabVIEW software interface. The proposed detection platform can be used in the testing of electric performance, protection function, EMC and so on. Practical application shows that the configuration of this detection platform is rational and reliable，and its detection results are accurate.