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。 In order to achieve full balance between contact suspension and return line traction current, it is a common practice to provide a large number of current-sinking transformers in the traction network to draw the traction return all the way into the return line. This approach has the following disadvantages: higher project costs, catenary work conditions worse. When the locomotive pantograph through the suction transformer at the electricity section, the moment a suction current transformer short circuit, the resulting arc may burn the contact line. In this paper, a new T-NF balanced power supply mode is proposed, which can realize the balanced power supply of T-NF without snubber transformer. The article analyzes the feasibility of this method.