Harmonics generated from railway operation

Abstract

This paper reports harmonics generated while typical high-speed railways are under operation. The solution in reducing harmonics by the use of installation of power electronic compensators, especially static VAR compensator (SVC), in the railway system during the procedure of railway infrastructure upgrading may not be a very easy solution. Discussions are given and better method and approach are proposed. In order to find effective solutions to balance the main drawback of SVC compensators, such as the harmonic currents injected into the railway catenary due to their highly non-linear characteristics. Analysis of a large volume of data, which had been collected in a practical high-speed railway project has been carried out to study the harmonics content. Negative consequences of SVC to the both railway and grid system could be minimized by the discussed approach