基于逆变型能量回馈系统的地铁保护配置方案设计研究

Design and Research of Metro Protection Configuration Scheme Based on Inverter Energy Feedback System

随着逆变型能量回馈系统在地铁领域的推广,其反馈的电能对地铁供电网络安全稳定性能的影响亟待解决。首先建立了逆变回馈系统的仿真模型,然后介绍了地铁供电系统保护配置方案。根据逆变回馈模型能够抑制直流牵引网电压和电流的抬升以及逆变回馈瞬时最大功率的仿真结果,对既有地铁交直流系统保护配置方案进行改进,从而保障地铁供电网络的安全性与可靠性。

With the popularization of the energy feedback system in the field of metro,the impact of the feedback electric energy on the safety and stability of the subway power supply network needs to be solved urgently.The simulation model of the inverter feedback system was established firstly,and then the protection configuration scheme of the subway power supply system were introduced.According to the simulation results of the inverter feedback model that could suppress the rise of the voltage and current of the DC traction network and the instantaneous maximum power of the inverter feedback,the protection configuration scheme of the existing subway AC and DC system was improved to ensure the safety and reliability of the subway power supply network.