电源快速切换技术在牵引变电所的应用分析

Application Analysis of Power Rapid Switching Technology for Railway Traction Substation

研究目的:通过研究电气化铁路牵引变电所电源快速切换技术,以应对电气化铁路牵引变电所主要设备检修或主变压器轮换运行时,只能采取全所停电的倒闸方式,存在效率低下、过度依赖于维修"天窗"的问题。本文首先系统地介绍电源快速切换技术的基本原理,基于铁路牵引变电所的电气主接线实际应用场景,研究电源快速切换装置在牵引变电所设备检修及轮换运行中的工程应用方案,并分析各种方案的验证结果,以期对该技术的推广积累经验。研究结论:(1)电源快速切换技术能实现牵引变电所电源无缝切换,主变压器倒闸过程中能保持对外不间断供电,避免了全所停电的状况;(2)电源快速切换技术在保障牵引供电可靠性的同时,提高了牵引变电所主设备维修的工作效率;(3)电源快速切换装置可以提供串联切换和并联切换,使得牵引变电所主电气设备维修工作时间安排更加灵活,不受制于维修"天窗"时间限制;(4)随着硬件性能的提高和软件功能的完善,该技术在电气化铁路牵引变电所倒闸操作中具有较大的推广应用前景。

Research purposes： Through the study of electrified railway traction substation power rapid switching technology to deal with the electrified railway traction substation main equipment maintenance or main transformer switch operation, which has problem of leading to the power failure of the whole station, low efficiency and over reliance on the maintenance ＂ Window ＂. This paper systematically introduces the basic principle of fast switching power supply technology. Based on the practical application of the main electrical connection of the railway traction substation, the paper studies the engineering application of the fast switching power supply device in the equipment maintenance and rotation working of the traction substation, analyzes the results of various programs, in order to promote the accumulation of experience. Research conclusions： （ 1 ） Power rapid switching technology can realize the seamless switching of the power supply of the traction substation, and can keep the uninterrupted power supply in the process of the main transformer reversing, which avoids the power failure of the whole station. （2） Power rapid switching technology ensures the reliability of traction power supply, and improves the work efficiency of the traction substation main equipment. （3） Power rapid switching technology can provide series switching and parallel switching mode, which makes the maintenance work arrangement of the traction substation main electrical equipment more flexible, and is not limited by the time limit for the maintenance ＂Window＂. （4） With the improvement of the hardware performance and the improvement of the software function, this technology can be widely used in the operation of the electrified railway traction substation.