Method for measuring electrical performance of railway vehicle
A technology for rail vehicles and electrical performance, which is used in grounding resistance measurement, electrical measurement, measurement devices, etc.
Active Publication Date: 2021-06-04
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology
[0004] The invention provides a method for measuring the electrical performance of rail vehicles, which is used to solve the defect that the rail vehicles made of carbon fiber composite materials cannot be related to the auxiliary evaluation of shielding and grounding performance in the prior art
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[0038] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0039] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing this The embodiments and simplified descriptions of the invention do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed a...
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The invention provides a method for measuring the electrical performance of a railway vehicle. The method comprises the steps of measuring the impedance of a skin shielding layer of the vehicle body of the railway vehicle; measuring the impedance of the vehicle body grounding network of the vehicle body; measuring impedance between the skin shielding layer and the vehicle body grounding network between adjacent vehicle bodies of the railway vehicle; measuring stray current on the skin shielding layer; and measuring the stray current of a busbar in the vehicle body grounding network. The impedance of the skin shielding layer is measured, the impedance of the vehicle body grounding network is measured, the impedance between the skin shielding layer and the vehicle body grounding network between adjacent vehicle bodies is measured, the stray current on the skin shielding layer is measured, and the stray current of the busbar in the vehicle body grounding network is measured; parameters of key parts related to shielding and grounding performance of the railway vehicle can be effectively obtained; and by using the obtained parameters, the shielding and grounding performance of the railway vehicle can be effectively evaluated.
Description
technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a method for measuring electrical properties of rail vehicles. Background technique [0002] For current rail vehicles, there is a technology that utilizes carbon fiber composite materials as rail vehicle processing components. However, the electrical conductivity of carbon fiber composite materials is several orders of magnitude lower than that of metal materials such as stainless steel or aluminum alloy. Due to the problems such as the shielding and grounding function weakening caused by the change of the car body material from metal to carbon fiber composite materials, it will affect the electromagnetic field of the entire rail vehicle. Compatibility has a negative impact. [0003] Therefore, for the current rail vehicle manufacturing technology, there is an urgent need for corresponding measurement methods to evaluate the shielding and grounding performance of rail veh...
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IPC IPC(8): G01R31/00G01R31/52G01R27/20G01R1/18
CPCG01R31/008G01R31/52G01R27/205G01R27/20G01R1/18
Inventor 丁叁叁宋旭鹏宋显刚郑凯高玉龙
Owner CRRC QINGDAO SIFANG CO LTD