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作 者:马孟阳 陈明辉 黄彦全[1] 钟成 MA Mengyang;CHEN Minghui;HUANG Yanquan;ZHONG Cheng(Southwest Jiaotong University,Chengdu 611730,China;Sichuan Huiyou Electric Co.,Ltd.,Chengdu 611730,China)
机构地区:[1]西南交通大学电气工程学院,四川成都611730 [2]四川汇友电气有限公司,四川成都611730
出 处:《电工技术》2021年第24期97-99,147,共4页Electric Engineering
摘 要:关节式电分相是电气化铁路牵引供电系统较为薄弱的环节,电力机车在通过关节式电分相时经常会产生过电压现象,过电压可能会造成机车放电间隙击穿、牵引所馈线保护跳闸,严重影响铁路的安全运营。从实测结果来看,机车在过渡区和中性区行驶时过电压会持续存在一段时间,与以往对关节式电分相产生过电压的研究作对比,分析造成电磁暂态过程以及过电压延续的原因可能是机车的移动。在MATLAB/Simulink软件上建立了机车过关节式电分相的仿真模型,用多个离散过程来近似模拟机车过电分相的连续过程,最后与实测波形对比,验证等效模型是有效的。The articulated phase insulator is a weak link in the electrified railway traction power supply system.Over-voltages occurs frequently as the electric locomotive passes the articulated phase insulator.Over-voltage may cause the gap's electric breakdown,short circuit fault and serious influence on the safe operation of the railway.According to the actual measurement results,the over-voltage will continue to exist for a certain period of time when the locomotive is running in the transition zone and the no-power zone.Compared with the previous research on the over-voltage generated by the articulated phase insulator,the movement of the locomotive may be the reason for the continuation of electromagnetic transient process and over-voltage.A simulation model of the locomotive passing through the articulated electrical phase separation is established on the MATLAB/Simulink software in this paper,and multiple discrete processes are used to approximate the continuous process of locomotive through electric phase separation.Finally,compared with the measured waveform,the equivalent model is verified to be effective.
分 类 号:U22[交通运输工程—道路与铁道工程]
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