对牵引变电所二次侧接线方式的改进

在牵引变电所的建设和改造过程中，二次设备大多数采用了综合自动化系统，改进较为成功。但一次设备的接线、运行方式变化不大，尤其是27．5kV的接线方式。针对这种情况，本文结合多年现场运行的经验，介绍了目前采用27．5kV的接线方式在运行中常见的问题，并对此提出了解决方法和设想。

Improvement of Secondary Wiring Mode for Traction Substation

During construction and reconstruction of traction substation, the integrated automation system has been adopted in secondary equipmentwith rather successful improvement. However, there are less changes in primary equipment wiring and operation mode especially 27.5 kV wiring mode. For this case, the paper introduces the current common problems occurred in 27.5 kV wiring mode during operation with reference of site operation experiences and puts forward the resolution methods and assumptions.