Method and system for detecting unbalanced current of electrical service test vehicle

Abstract

The invention relates to a method and system for detecting unbalanced current of an electrical service test vehicle. In the running process of a detecting motor train, return current signals of steelrails are acquired in real time, the acquired information is displayed in real time, and the data is recorded, thereby providing a reference basis for the railway signal maintenance personnel to locate an equipment fault point and analyze causes of the unbalanced current. The system comprises a detection antenna, a traction return current acquisition device, a detection server and a client, wherein the special rail traction current detection antenna is used, the return current signals of the steel rails are acquired in a non-contact manner by adopting an electromagnetic induction principle, the return current signals are processed by the traction return current acquisition device, and digital signals are sent to a computer so as to complete the work such as real-time display, dynamic analysis and data storage. The advantages are that the system adopts an electromagnetic induction technology, a signal detection technology and a network communication technology, can detect the amplitudeof the traction return current, the unbalanced current value and the unbalance rate on the steel rails in real time on the high-speed railway detecting motor train, thereby facilitating the railway maintenance personnel to maintain the signal equipment.

Description

technical field [0001] The invention belongs to the application field of railway signal equipment detection, and in particular relates to a device and a method for detecting traction current on rails in a non-contact manner during the running process of a moving inspection vehicle. Background technique [0002] In electrified railways, since the traction current and the signal current of the track circuit are transmitted in the same conductor, in order to ensure the normal operation of the track circuit, various protective measures are usually adopted to ensure that the amplitude of the traction current on the two rails flowing through the track circuit is equal to avoid The unbalanced current of the two rails will burn out the railway signal equipment, causing the track circuit to flash red, affecting the operation of railway trains. In the actual application process, unbalanced current will be generated due to cable insulation damage, choke transformer fixed lead-in screw ...

AI Technical Summary

Problems solved by technology

In the actual application process, unbalanced current will be generated due to cable insulation damage, choke transformer fixed lead-in screw loose, horizontal connecting wire poor contact, foreign matter on the rail, rust, etc.

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