含地面再生制动能量利用装置的供电设计和节能指标评估

逆变回馈装置和储能装置等地面再生制动能量利用装置(GRUD)在城市轨道交通牵引供电系统中的应用逐渐普遍.针对GRUD的供电系统设计问题,首先建立不同GRUD的供电计算模型,并以此为基础,建立GRUD的优化设计与运营模型,设计阶段目标函数为GRUD寿命期限内的系统综合成本,运营阶段目标函数为系统牵引能耗.针对含GRUD供电系统的节能效果评估问题,提出从牵引能耗和主变电所能耗两个角度计量的节能效果评估指标,并提出基于节能效果评估的在线监测与控制系统.最后,对含GRUD的供电系统设计提出应转变的思路,为系统设计提供一定参考.

Power Supply Design of Ground Regenerative Braking Energy Utilization Device and the Energy-saving Effect Evaluation Indices

Energy feedback systems and energy storage systems are widely used in urban rail DC traction power supply systems. Aiming at the design of a power supply system with ground regenerative braking energy utilization devices, this study first builds power supply calculation models for different ground regenerative braking energy utilization devices. Based on these models, the theory of optimal design and operation of the power supply system is proposed, which takes the comprehensive cost of the system within the lifetime of the regenerative braking energy utilization device as the objective function in the design phase, and the system traction energy consumption as the objective function in the operation phase. To evaluate the energy-saving effect of the power supply system with ground regenerative braking energy utilization devices, two energy-saving effect evaluation indexes are proposed, which measure energy from traction energy consumption and main transformer energy consumption, respectively. An online monitoring and control system based on an energy-saving effect evaluation is proposed. Finally, some ideas for the design of the power supply system that should be adjusted are presented, which provide a reference for the system design.