The grounding return current index and the composition of the grounding return current system of traction power supply system of high-speed railway are introduced in this paper.The shunt coefficient of each branch of traction power supply system is calculated.The various factors affecting the return current distribution is analyzed.Combined with the grounding return current characteristics and differences of direct power supply and AT power supply mode,it is pointed out that there are defects in the grounding return current index and quality classification criteria,according to the degree of variance deviation from the average value.Finally,based on the situation of the grounding system and the return current in the traction power supply system of the high-speed railway,the modification scheme of the dynamic acceptance criteria of the grounding return current is put forward.
维普
万方数据