Pantograph-overhead-contact-line-system arc plasma multi-parameter acquisition method and apparatus

Abstract

The invention discloses a pantograph-overhead-contact-line-system arc plasma multi-parameter acquisition method and apparatus. The apparatus comprises an arc spectrum acquisition device, an electrical parameter measuring device, a physical parameter measuring device and a digital delay generator. A pantograph sliding plate and an overhead contact line system wire are connected with the electrical parameter measuring device and the physical parameter measuring device. A data acquisition card, a linear displacement sensor and the arc spectrum acquisition device are triggered by the digital delay generator. The apparatus is simple and free of interference, and can accurately measure the internal parameters of the plasma, and completely reflects the ablation state of the pantograph-overhead-contact-line-system arc plasma by synchronously acquiring multiple arc parameters in real time such as pantograph-overhead-contact-line-system arc plasma emission spectrum, voltage and current, and clearance distance.

Description

technical field [0001] The invention relates to a pantograph-catenary arc plasma multi-parameter acquisition method and device, belonging to the technical field of electrified railway system measurement. Background technique [0002] High-speed railways are widely used all over the world because of their advantages such as less pollution, high punctuality, and large carrying capacity. At present, the improvement of the running speed of trains is the primary goal of the development of various countries. The increase of train speed will lead to intensified pantograph-catenary vibration, and the pantograph-catenary offline phenomenon will become more and more serious. The stable operation of the train needs to ensure the stable current receiving between the catenary and the pantograph. When the off-line phenomenon occurs, the pantograph-catenary arc will undertake the role of transmitting current. However, the pantograph-catenary arc will ablate the catenary wire and the panto...

AI Technical Summary

Problems solved by technology

[0004] At present, the method of arc acquisition is still relatively lacking. At present, only the detection of ultraviolet light signals and the measurement of pantograph-catenary arc voltage and current are used in practical applications, which can only qualitatively analyze the strength of the arc, and cannot quantitatively analyze the internal parameters of the pantograph-catenary arc; The important characterization parameters of burning degree and ablation characteristics can accurately and real-time reflect the ablation strength of the arc on the contact line and the surface of the slide plate, and are of great significance to the measurement, monitoring and prevention measures of the pantograph-catenary arc

At present, for atmospheric pressure plasma such as pantograph-catenary arc plasma, the common acquisition method is the probe method. Although the probe method can directly reflect the plasma parameters, it will interfere with the plasma state during the measurement process and affect the accuracy of the measurement. sex

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