储能型再生制动能量并网技术的研究

On Power Grid Energy Storage of the Regenerative Braking Energy

目前城市轨道交通再生制动能量大部分由电阻消耗,利用率较低。设计了储能型再生制动能量并网系统,研究了再生制动能量在并网系统与储能系统之间的分配关系。阐述了系统的组成及设计方法,给出储能优先和并网优先2种控制策略,并通过仿真进行对比分析。仿真结果验证了储能优先策略可行、有效,能够减小再生制动功率对交流电网的冲击,实现再生制动能量的循环利用。分别建立了逆变回馈系统和储能系统的试验模拟装置,通过试验结果验证了控制策略的可行、有效。

At present, the utilization ratio of the regenera- tive braking energy on urban rail transit is quite low, be- cause most of the energy is consumed by resistance. So an energy storage system on power grid is designed, the distri- bution relationship between energy storage system and en- ergy feedback system are studied. Then, the components and design method of the system are given, including two different distributed methods： energy storage priority and regenerative braking energy grid priority. A simulation re- sults verify that the energy storage schemes is feasible and effective,which can reduce the impact of the regenerative braking energy to the grid and achieve the cyclic utilization of the regenerative braking energy. On this basis, the in- verter feedback system and energy storage system simula- tion device are set the control scheme up respectively. Through experiments, is verified to be practical and effective.