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Real-time electromagnetic transient simulation is a powerful tool for the power system transient study and the hardware-in-the-loop (HIL) testing. Large-scale DC grid can meet the flexible transmission requirements with high power efficiency and high controllability. CIGRE&#x0301; working group has proposed a DC grid test system, which covers various HVDC configurations and deploys modular multi-level converters (MMCs) in the grid. This work focuses on the efficient solution of the DC grid real-time emulator providing accurate and detailed results. The design and implementation of the CIGRE&#x0301; DC grid are carried out on a hybrid MPSoC-FPGA platform realizing the synergy between the Xilinx Vitrex UltraScale+ FPGA device containing a large number of logic resources and Xilinx Zynq UltraScale+ MPSoC device containing the ARM multi-core processing system and FPGA resources on a single chip. Hybrid modeling methodology using device-level electrothermal model, equivalent circuit model, and average value model for the converters is employed to present the detailed device-level results of local equipment and the accurate system-level results of global interactions of the DC grid. The detailed design partitioning and implementation methods are presented, and the real-time results are captured by the oscilloscope and validated with commercial simulation tools PSCAD/EMTDC and SaberRD.

Design and Implementation of Real-Time Mpsoc-FPGA-Based Electromagnetic Transient Emulator of CIGRÉ DC Grid for HIL Application