高速列车再生制动对负序影响研究

Study on Impact of High-speed Train Regenerative Braking on Negative Sequence

采用通用方法计算牵引负荷产生的负序电流,讨论单相供电和两相供电方式下处于再生制动或牵引状态的牵引负荷产生的负序电流,为高速铁路牵引供电系统设计提供参考,并基于负序变化原因给出削弱负序的建议措施。计算结果还为高速铁路牵引供电系统设计中确定负序提供一种简便的工程方法。

Negative-sequence currents produced by traction loads are calculated with the generalized method.Negative-sequence currents are analyzed deeply corresponding to the situation when traction loads are under traction and regenerative braking and fed by single-phase and two-phase power supplies.Thus,reference is made for design of the traction power supply system for high-speed railways.Suggestions to weaken negative sequences are also put forward according to the reasons of negative-sequence changes.The calculation results can be used to provide a simple and convenient engineering method to determine the negative-sequence currents of different traction loads in design.