Calculation and analysis of electromagnetic radiation from VSC-HVDC converter system

The development of VSC-HVDC puts onerous requirements on the electromagnetic compatibility of VSC-HVDC converter systems. To predict the radiated electromagnetic disturbance of the converter system during regular operations, this research establishes an antenna model of a VSC-HVDC converter system, using the calculation method of electromagnetic field theory, which combines the moment of methods with antenna theory, according to actual running states and real physical structure. Based on the three-phase two-level converter system experimental platform, antenna models of a two-level converter system and a modular multi-level converter valve system are respectively developed using the theory. Finally, through the developed antenna models of the VSC-HVDC converter system analyzed the radiated electromagnetic disturbance characteristic.