Harmonic Analysis of the Power System of a Certain Icebreaker Research Ship

When the current flows through nonlinear loads in the ship’s power system, a large amount of harmonic current is generated, which reduces the power quality of the ship’s power system and affects the normal operation of the ship’s electrical and electronic equipment and instruments. CCS regulations also have corresponding requirements for the harmonic part of the power system’s power quality. This article takes a certain icebreaking research ship as an example, applies ETAP simulation software to establish a simulation model of the power system of the icebreaking research ship, and conducts harmonic analysis and calculation. The simulation results show that the AFE frequency converter has a good suppression effect on harmonics. The total harmonic distortion rate of the voltage of the 690V and 400V busbars of the icebreaking scientific research ship under various typical Operating conditions is within the specified range, which can provide reference and guidance for harmonic processing of similar ships in the future.