牵引变压器负序分析及补偿

Analysis and Compensation of Negative Phase-sequence for Traction Transformer

分析了不同联结形式的牵引变压器在不同负荷条件下的负序电流特性;指出在同时具有牵引负荷和回馈负荷的工况下,三相电流不对称程度的严重性;介绍了采用铁路静止电能调节器(RPC)对负序、无功、谐波等电能质量问题进行综合治理的基本原理;重点讨论了利用RPC消除三相-两相牵引变压器负序电流所需的装置容量问题,为RPC的工程应用提供指导。

It analyzed the characteristics of negative phase-sequence current for traction transformers with different connection types under different loads. The three-phase current asymmetry degree of traction transformers is serious under both traction load and feedback load. The basic theory of integrative compensation for railway static power conditioner （RPC） was introduced aiming to the power quality problems in terms of negative sequence current, reactive power and harmonic. It focused on analyzing the rating capability of RPC for eliminating the negative sequence current of three-phase to two-phase traction transformer,which could provide reference for engineering application of RPC.