Simulation benchmark of high voltage direct current system based on modular multilevel converters and simplification

Abstract

This paper presents a simulation benchmark and model simplification study for High Voltage Direct Current (HVDC) systems based on Modular Multilevel Converters (MMC). The background and current research status of HVDC systems are introduced, with an analysis of the main technological advancements and challenges in the field. The operating principle of MMC is explained, emphasizing its applications and advantages in HVDC systems. The control methods for MMC-HVDC systems are discussed, including current control and power regulation techniques. The construction of the simulation model is described, followed by an analysis of the simulation results. Additionally, the AVM model is introduced to simplify the simulation system, and the performance of the simplified system is examined. The study concludes by summarizing the main contributions, analyzing the limitations of the simulation model in practical applications, and suggesting directions for future improvement.