电子开关过分相装置控制策略研究

Research on Control Strategy of Electronic Switch Neutral Section Passing Equipment

随着我国铁路运输技术的持续发展,地面过分相装置已得到推广应用,但基于断路器投切的地面过分相装置存在使用寿命短、投切精度差的问题。为此,文章设计了一种电子开关地面自动过分相装置,其采用瞬时电压和电流检测与剩磁预估相结合的方法,通过控制晶闸管的开断来实现两个供电臂与中性区之间的供电切换,使换相断电时间可低至1 ms。该过分相装置具有断电时间短、使用寿命长、对机车冲击小、供电可靠的特点,能实现列车不断电过分相,显著提升了铁路供电质量和运输能力。

With continuous development of China’s railway transportation technology,ground neutral section passing equipment has been widely used.However,ground neutral section passing equipment based on circuit breaker has the problems of short service lifetime and poor switching accuracy.It proposed an electronic switch neutral section passing equipment with transient voltage and current test and remanence prediction,which switch power supply between two power supply arms and neutral area by thyristors,and the switch time can be as low as 1 ms.The equipment has the advantages of short power off time,long service lifespan,high reliability,slight impact on locomotive,and can realize continuous power supply in neutral section passing,and significantly upgrade the railway power supply technology and transport capacity.