A method and system for harmonic suppression of a rail transit electric traction system

Abstract

The application discloses a kind of harmonic suppression method and system of rail transit electric power traction system.The system includes traction unit harmonic response acquisition module, traction group construction and intra-group influence analysis module, traction group collaborative behavior analysis module, collaborative suppression strategy generation module and suppression resource regulation module.The present application divides multiple traction units on the same train into traction group, analyzes the harmonic response information of traction unit on the level of traction group to generate comprehensive harmonic influence characteristics, and analyzes the effect of multiple traction groups on the level of traction power supply section, judges whether there is harmonic collaborative amplification or collaborative instability trend, so as to generate collaborative harmonic suppression strategy for traction group or traction unit.Through differential regulation of harmonic suppression resources and combined feedback correction, dynamic adjustment of collaborative harmonic suppression process is realized, and the stability of traction power supply system operation under complex operating conditions is improved.

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