摘要
针对机车在起动、制动过程中对牵引网网压造成冲击引起网压不稳定的问题,首先提出计及线路电阻值参数受地理气候参数影响的牵引网最优潮流计算方法;其次,在车载超级电容电力机车的框架内提出网压波动抑制策略;最后通过算例仿真,分析3种极端地理气象情景下供电范围内的机车端网压分布。结果表明,牵引网沿线地理气候参数对机车端网压影响不可忽略,并在这个基础上进一步运用所提策略进行算例分析。研究结果表明:所提策略可在有限的储能容量下对牵引网机车网压波动进行较好抑制,在供电范围内可避免机车端网压超过或低于牵引变流器允许网压范围,避免牵引封锁,提高机车运行的可靠性。
Aiming at the problem of unstable traction network voltage caused by the impact of locomotives on the traction network voltage during starting and braking,this paper firstly proposes a traction network optimal power flow calculation method that takes into account the influence of geographical and climatic parameters on the resistance value of the line.Secondly,it proposes a voltage fluctuation suppression strategy within the framework of onboard supercapacitor electric locomotives.Finally,through numerical simulation,it analyzes the distribution of locomotive end network voltage within the power supply range under three extreme geographical and meteorological scenarios.The results indicate that the influence of geographical and climatic parameters along the traction network on the locomotive end network voltage can’t be ignored,and on this basis,the proposed strategy is further applied for case analysis.The research results show that the proposed strategy can effectively suppress the fluctuation of locomotive network voltage under limited energy storage capacity.Within the power supply range,this strategy can prevent the locomotive end network voltage from exceeding or falling below the allowable network voltage range of the traction converter,avoid traction blocking,and improve the reliability of locomotive operation.
作者
苏照旭
甘永忠
田铭兴
刘源涛
SU Zhaoxu;GAN Yongzhong;TIAN Mingxing;LIU Yuantao(School of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou,Gansu 730070,China;Rail Transit Electrical Automation Engineering Laboratory of Gansu Province,Lanzhou Jiaotong University,Lanzhou,Gansu 730070,China;Power Supply Department of China Railway Lanzhou Bureau Group Co.,Ltd.,Lanzhou,Gansu 730030,China)
出处
《广东电力》
北大核心
2024年第2期80-87,共8页
Guangdong Electric Power
基金
中国铁路兰州局集团有限公司科技研究开发计划课题(2023054-1)
国家自然科学基金项目(52167013)
甘肃省科技计划项目(23JRRA891)。
关键词
牵引封锁
机车端网压波动抑制
地理气候条件
车载储能
traction blockade
suppression of network voltage fluctuation at the locomotive end
geographical and climatic condition
onboard energy storage
