Real-time transient simulation for distribution systems based on FPGA, Part II: system architecture and algorithm verification

Real-time transient simulation for active distribution network requires very high computational capability. This paper proposed multi-level parallel architecture of real-time transient simulator for active distribution system based on field-programmable gate array (FPGA), involving system level, module level and elementary level. A real-time simulator for distribution system considering module level and elementary level parallelism was proposed. The simulator was designed by Verilog hardware description language and based on floating-point arithmetic calculation. In order to validate the developed simulator, a typical distribution network was simulated in the real-time simulator using a time-step of 2 μs, which fully demonstrated the advantages of the simulator on execution speed and simulation scale. The simulation results show great coherence with the offline simulation in Matlab/SimPowerSystems.