弓网滑动电接触电流稳定性研究  

Study of Current Stability in Pantograph-Catenary Sliding Electric Contact

作　　者：陈忠华[1] 康立乾[1] 石英龙[1] 回立川[1] 郭凤仪[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《电工技术学报》2013年第10期127-133,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50977040;51277090);辽宁省自然科学基金(201102086)资助项目

摘　　要：弓网系统受流稳定性直接决定电力机车在高速、重载下能否稳定、安全地运行。而影响受流稳定性的因素主要有接触压力、滑动速度,因此本文利用自制实验机模拟弓网系统运行状态,分析研究了速度、压力等参数对弓网系统受流稳定性的影响,提出了电流稳定性的评价指标。从理论上分析了接触斑点数目的改变是影响电流稳定性的主要因素,并通过实验数据利用BP神经网络建立接触压力与电流稳定系数、滑动速度、接触电流之间的关系模型,通过模型可以得出当前速度和电流条件下满足电流稳定性要求的最小接触压力。The current-carrying stability of the pantograph-catenary system directly determines whether the electric locomotives can run steadily and safely under high-speed and heavy-load condition. The contact pressure and sliding speed are two main factors that influence the current-carrying stability. This article simulates the operating state of the pantograph-catenary system by use of the self-made experiment machine, studies the influence of parameters such as speed, pressure on the pantograph-catenary system current stability, and puts forward the evaluation criterion of current stability The paper theoretically analyzes that the number of the contact spots is the main factors that influence the current stabiliy. The relation model of the contact pressure, the current stability coefficient,the sliding speed and the contact current is established by use of BP neural network, the minimum contact pressure that meets the current stability requirement can be obtained through the model.

关 键 词：滑动电接触 电流稳定性 电流稳定系数 压力 BP神经网络 

分 类 号：TM501[电气工程—电器]