锚段关节式电分相过电压的龙格-库塔解法及抑制

针对电力机车通过锚段关节式电分相时,出现过电压引起变电所馈电线跳闸,车顶绝缘设备被击穿的现象,分析了机车过分相的暂态过程,建立了机车过分相时的等效高阶电路,使用龙格库塔法对机车过分相时中性段上的过电压进行求解。通过机车-牵引网-电分相联合仿真模型,对机车过分相时产生的过电压进行实验,并提出了利用RC滤波器抑制过电压的方法。实验结果表明：中性线加装RC滤波器可以使过电压降至68.10k V,从而降低了过电压对变电所和车顶绝缘设备的冲击,提高了机车运营的安全性。...

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Bibliographic Details
Published in电测与仪表 Vol. 53; no. 8; pp. 26 - 31
Main Author 屈志坚 周敏 刘雨欣 赵宁
Format Journal Article
LanguageChinese
Published 华东交通大学电气与电子工程学院,南昌,330013%中铁上海设计院集团公司南昌院,南昌,330013 2016
Subjects
滤波器
电分相
过电压
高阶电路
龙格库塔法
filter
higher-order circuit
龙格库塔法
电分相
过电压
滤波器
electrical sectioning
Runge-Kutta method
高阶电路
over-voltage
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ISSN1001-1390

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Summary:针对电力机车通过锚段关节式电分相时,出现过电压引起变电所馈电线跳闸,车顶绝缘设备被击穿的现象,分析了机车过分相的暂态过程,建立了机车过分相时的等效高阶电路,使用龙格库塔法对机车过分相时中性段上的过电压进行求解。通过机车-牵引网-电分相联合仿真模型,对机车过分相时产生的过电压进行实验,并提出了利用RC滤波器抑制过电压的方法。实验结果表明：中性线加装RC滤波器可以使过电压降至68.10k V,从而降低了过电压对变电所和车顶绝缘设备的冲击,提高了机车运营的安全性。
Bibliography:23-1202/TH
Runge-Kutta method; higher-order circuit; electrical sectioning; over-voltage; filter
As the electric locomotive goes through the electrical sectioning overlap structure,the feed trip and the breakdown of roof insulation are caused by over-voltage,the transient process when the electric locomotive goes through the electrical sectioning is analyzed,and the equivalent higher-order circuit is established,the over- voltage on the neutral line is solved by using Runge-Kutta method. Based on the united model of locomotive-network- electrical sectioning,the over- voltage experiment when the electric locomotive goes through the electrical sectioning is conducted,and the method of using RC filter to suppress over- voltage is put forward. The experiment results show that the over- voltage decreases from 112. 8k V to 68. 10 k V when the neutral line is installed RC filter,the impact of overvoltage on the substation and the roof insulation equipment is reduced,as a result,the security of the locomotive operation
ISSN:1001-1390