基于城轨中压逆变型再生能量吸收利用装置的接触网防融冰系统

System to Prevent Icing and Melting for Catenary Based on Urban Rail Transit Medium Voltage Inverter Regenerative Energy Absorption and Utilization Device

为了解决城市轨道交通隧道外接触网冰冻危害,借鉴电力行业采用大电流产生的电热效应除冰方法,将中压逆变型再生能量吸收利用装置作为负载,设计接触网防融冰系统。以长沙市轨道交通接触网为例,介绍防融冰系统设计原理,计算防融冰电流,分析基于中压逆变型再生能量吸收利用装置接触网防融冰方案,并提出设备改造方案,以及需要进一步研究的方向。

In order to solve the freezing hazard of catenary outside the urban rail transit tunnel,the system to prevent icing and melting for catenary is designed by referring to the de-icing method of electric heating effect generated by large current in the electric power industry,and using medium voltage inverter regenerative energy absorption and uti⁃lization device as load.Taking the catenary of Changsha rail transit as an example,the paper introduces the design principle of prevent icing and melting,calculates the prevent icing and melting current,analyzes the prevent icing and melting scheme of catenary based on medium voltage inverter regenerative energy absorption and utilization device,and puts forward the equipment transformation scheme,as well as the direction of further research.