城市综合交通供电系统的协调控制策略

发布时间：2018-02-02 04:32

本文关键词： 直流微电网牵引供电系统电动汽车换电站协调控制改进下垂控制功率均分　出处：《高电压技术》2017年06期 　论文类型：期刊论文

【摘要】：电气化轨道交通车辆和电动汽车将是未来城市电网负荷的重要组成部分,其供电系统安全运行的意义重大。根据牵引供电系统和电动汽车充电的特点,同时考虑可再生能源的有效利用,提出了基于直流微电网的城市综合交通供电系统,描述了系统的基本组成和拓扑结构。为了保证系统各单元的稳定运行,提出了基于DBS和低带宽通信的协调控制策略,将系统运行划分为4种工作模式,并通过电压信号同步预处理环节对各模式间的切换信号进行了优化;同时利用各单元的信息交换能力,提出了基于自适应虚拟阻抗的改进下垂控制,实现了分布式电源间的功率均分。仿真结果表明,该控制策略可以维持直流母线电压的稳定,实现系统的功率平衡,为城市综合交通供电系统的运行提供支撑。
[Abstract]:Electrified rail transit vehicles and electric vehicles will be an important part of the future urban power grid load, and its power supply system is of great significance. According to the characteristics of traction power supply system and electric vehicle charging. At the same time, considering the effective utilization of renewable energy, the urban integrated traffic power supply system based on DC microgrid is proposed. The basic composition and topology of the system are described. In order to ensure the stable operation of each unit of the system. A coordinated control strategy based on DBS and low bandwidth communication is proposed. The system is divided into four working modes, and the switching signals between the modes are optimized by voltage signal synchronization preprocessing. At the same time, an improved droop control based on adaptive virtual impedance is proposed based on the information exchange ability of each unit, and the power sharing among distributed power sources is realized. The simulation results show that the improved droop control is based on adaptive virtual impedance. The control strategy can maintain the stability of DC bus voltage, realize the power balance of the system, and provide support for the operation of urban integrated traffic power supply system.
【作者单位】：华北电力大学电气与电子工程学院;国网邯郸供电公司;
【分类号】：TM72;TU994
【正文快照】： 0引言随着经济水平的不断提高和城市化进程的快速推进,环境友好性和能源可持续性逐步成为城市电网规划建设的两大目标。在人口日益增加及交通拥堵问题进一步凸显的状况下,电气化城市轨道交通成为公共交通网络的发展方向[1-2];同时为了解决环境污染和能源危机等问题,实现经济的

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