摘要
随着铁路电力系统无人化的推进,大量用于牵引变电所、开闭所、分区所、自耦变压器所的直流电源系统需要更高的可靠性和自动化特性。本文深入研究了三端口变流器最佳拓扑结构、在线核容、蓄电池内阻测量等关键技术,提出了智能化并联型直流电源屏代替传统直流电源的实施方案,通过使用三端口变流器连接交流电网、蓄电池和直流母线,实现蓄电池之间解耦,极大提高了直流系统可靠性。
With the advancement of unmanned railway power system,a large number of DC power supply systems used in traction substations,switching stations,sectioning posts,and autotransformer posts require higher reliability and automation characteristics.The paper studies deeply the key technologies of the three-port converter’s optimal topology,online capacity,and battery internal resistance measurement,proposes an implementation scheme of an intelligent parallel DC power supply panel instead of the traditional DC power supply.The realization of decoupling between batteries by using the three-port converter to connect AC power network,battery and DC bus has been greatly improved the reliability of DC system.
出处
《电气化铁道》
2022年第3期24-30,共7页
Electric Railway
关键词
并联型
直流电源屏
蓄电池
三端口变流器
在线核容
内阻
parallel type
DC power supply
storage battery
three-port converter
online capacity verification
internal resistance
