PSCAD/EMTDC Based Arc Model Simulation Method for Single-pole Grounding Fault

True bipolar voltage source converter (VSC) based high voltage direct current (HVDC) systems have been extensively developed in recent years. An effective arc model simulation method based on PSCAD/EMTDC platform is the basis and key for studying the fault arc characteristics in true bipolar VSC-HVDC systems. First, the arc model theory is analyzed to provide a theoretical basis for modeling the arc model. Then, the arc model simulation method is proposed, which includes: primary arc resistance module, secondary arc resistance module, secondary arc length control module, secondary arc self-extinction module, and arc resistance output module. Finally, simulation results in PSCAD/EMTDC verify the effectiveness of the proposed arc model simulation method.