基于模拟退火算法的全并联AT供电牵引网故测模型辨识  

Recognition of Fault Location Model of Traction Network Under All-Parallel AT Power Supply Mode Based on Simulation Annealing Algorithm

作　　者：张纯杰 ZHANG Chunjie

机构地区：[1]中国铁路兰州局集团有限公司兰州高铁基础设施段

出　　处：《电气化铁道》2025年第2期26-30,共5页Electric Railway

摘　　要：建立通用而精确的牵引变电所故障测距模型,对牵引网故障精准定位、快速应急处置至关重要。基于兰新客专既有运营数据,本文研究了故障测距的故障电流模型。基于网孔电流法对数据真实性和同步性进行校验,在剔除机车负荷电流的前提下建立AT吸上电流比法故障测距模型,并采用模拟退火算法(SA)提取模型的未知参数。通过对运营线路跳闸规律的探索,对既有故障测距方法的计算精度进行分析。试验结果表明,建立的故障测距模型可靠,且拟合性能优于其他模型。Establishment of a universal and accurate fault location model for traction substations is crucial for precise fault location and rapid emergency response for the traction network.On the basis of the existing operational data of Lanzhou-Urumqi high-speed railway,the paper studies the fault current model for fault location.On the basis of the mesh current method,the authenticity and synchronization of the data are verified.A fault location model by use of the AT suction current ratio method is established while excluding the locomotive load current.The unknown parameters of the model are extracted by use of the simulated annealing algorithm(SA).By exploring the tripping patterns of operating lines,the calculation accuracy of existing fault location methods are analyzed.The experimental results show that the established fault location model is reliable and has better fitting performance than other models.

关 键 词：全并联AT供电 牵引网 故障测距 参数辨识 模拟退火算法 

分 类 号：U226.5[交通运输工程—道路与铁道工程]