Application of RSVG in railway 27.5kV system-- Liujiagou of Shenshuo Railway
Railway locomotive is a single-phase load, which is usually connected to the three-phase power grid by VV transformer. When the locomotive is running, it will produce a lot of negative sequence current inputing into the power grid, and the locomotive traction converter adopts phase controlled rectifier technology, which will produce serious odd harmonics.
The chain SVG with delta connection can effectively control the unbalanced load of 27.5kV railway system based on Steinmetz balance compensation theory, and the harmonic generated by the load can be filtered based on active filter technology.
Compensation effect: