一种没有吸流变压器的T-NF平衡供电接线

为了实现接触悬挂和回流线牵引电流完全平衡,常规的作法是在牵引网内设置大量吸流变压器,将钢轨和地中的牵引回流全部吸入回流线.这种方式有以下缺点:工程造价较高,接触网工作条件变差.当机车受电弓通过吸流变压器处的电分段时,瞬间将吸流变压器一次绕组短路,产生的电弧可能烧损接触线.本文提出一种新的T-NF平衡供电方式,可实现无吸流变压器的T-NF平衡供电.文章对该方式的可行性作了分析.

Connection of T-NF Balancing Power Supply System Without Boosting Transformer

In order to keep current in contact wire system and negative feeder equal, a lot of booster transformers are installed in conventional BT power supply system to boost the current in rail and earth into negative feeder. It leads to some negative results: increase the investment and worsen the working condition of contact wire system. When pantograph of electro loco passing through the section of booster transformers,an instantaneous short circuit between primary windings occurs. The arc produced may damage the contact wire. In this paper, a new scheme of balanced feeding system without booster transformers is suggested and the feasibility of scheme is discussed.