交流电气化铁路再生制动能量高效协同利用技术

Regenerative braking energy efficient synergistic utilization technology for AC electrified railways

加强再生制动能量利用技术研究及应用,是推进交流电气化铁路低碳发展的重要举措。为进一步提高再生制动能量利用率,有效解决电力负荷消纳能力不足问题,兼顾成本控制,提出一种转移和存储协同利用技术。首先,阐述协同利用装置的构成及其工作原理,研究基于主从控制的分层控制架构。然后,基于转移利用优先和最大化利用原则,制定计及再生制动功率、电力负荷需求功率和装置额定功率等多重条件共同约束的控制策略。其次,依据现场实测数据,对控制策略的正确性和有效性进行仿真验证,并分析节能效果。最后,综合考虑循环寿命、安全性和可靠性等多方面因素,确定选用钛酸锂电池作为储能介质,并在此基础上,测算投资成本与全生命周期收益。研究结果表明,协同利用技术能够实现再生制动能量高效利用,节能节支效果良好,具有较高的工程应用价值。

Strengthening the research and application of regenerative braking energy utilization technology is an important measure to promote the low carbon development of AC electrified railways.In order to further improve the utilization rate of regenerative braking energy,effectively solve the problem of insufficient absorption capacity of power load,taking cost control into account,a kind of synergistic utilization technology combining transfer and storage was proposed.Firstly,the composition and working principle of the synergistic utilization device were explained,and the hierarchical control architecture based on master-slave control was studied.Secondly,following the principles of transfer priority and maximum utilization,the control strategy that takes into account the multiple constraints of regenerative braking power,electric load demand power and rated power of the device was formulated.Then,based on the field measured data,the correctness and effectiveness of the control strategy were simulated and verified,and the energy-saving effect was analyzed.Finally,considering factors such as cycle life,safety and reliability,lithium titanate batteries was selected as the energy storage medium,and the investment cost and the full life cycle benefits were calculated on this basis.The research results show that the synergistic utilization technology can realize the efficient utilization of regenerative braking energy,so it has a good effect of cost and energy saving and high engineering application value.