Abstract
As more and more energy storage systems are applied to support the safe operation of the power grid, it becomes more important to conduct grid connection tests. According to the latest national standards, the grid connection test scheme is studied on the basis of RT-LAB hardware in the loop simulation. Firstly, the structure of the Energy storage system(ESS) based on the energy storage inverter is analyzed, and the strategy of conduct and mathematical model of the energy storage system are introduced; Secondly, based on RT-LAB , conducted with FPGA, hardware in the loop simulation test platform is built to improve the calculation method in the simulation, improve the accuracy and speed of the simulation; Finally, on the basis of the above, the grid connection performance test scheme is introduced, the test method performance is described in detail on the condition of fault ride through of the energy storage system, and the results are analyzed in depth. The results shows that using RT-LAB hardware in the loop simulation can accurately simulate the grid connection test of the energy storage system and provide a reference for the test plan.
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