摘要
针对弱电网条件下,牵引网压越限导致的机车不能正常运行问题,采用一种储能型(Energy storage,ES)模块化多电平(Modular multilevel converter,MMC)的铁路功率调节器(Railway power conditioner,RPC),即ES-MMC-RPC,来抑制网压越限。较传统的系统扩容、电容器组的无功补偿电压治理方案,在分区所加装了ES-MMC-RPC,较传统的跟网型电流补偿控制,装置采用了动态性能更好的构网型或三维度支撑控制进行两侧供电臂的功率平衡;装置中的储能也采用了构网型控制,以进一步支撑电压。最后,提出在弱牵引网条件下ES-MMC-RPC装置的三层能量管理策略,通过有功平衡、装置自身及储能的功率支撑对网压进行三重支撑。经仿真验证,改进的构网型控制的ES-MMC-RPC能确保弱电网地区的牵引网压的稳定。
In response to the problem of traction network voltage exceeding the limit under weak grid conditions,an energy storage(ES)type modular multilevel converter(MMC)-railway power conditioner(RPC),also known as ES-MMC-RPC,is adopted to suppress network voltage fluctuations and stabilize network voltage.Compared to schemes of the system power supply capacity improvement and reactive power compensation with capacitor banks,it is found through simulation that the strategy of ES-MMC-RPC installed in the section post combining both grid following(GL)and grid forming(GF)/three-degree controls has a better effect on stabilizing the voltage.In addition,it has better economic effect.Finally,a three-layer energy management strategy for the equipment is proposed and verified by simulation,which provides triple support for stabilizing the voltage through active power balance,reactive power support from the equipment itself and the ES device to ensure the voltage stability in weak grid areas.
作者
李腾
马永刚
侯凤娟
梁泽镕
LI Teng;MA Yonggang;HOU Fengjuan;LIANG Zerong(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044;Power Supply Department of China Railway Urumqi Bureau Group Co.,Ltd.,Urumqi 830063)
出处
《电气工程学报》
CSCD
北大核心
2024年第3期115-127,共13页
Journal of Electrical Engineering
基金
中国铁路乌鲁木齐局集团科技研究开发计划重点课题资助项目(2022-kj-67)。
