An online temperature measurement system for a DC switch cabinet for locomotive power supply

Abstract

The invention discloses an online temperature measurement system for a DC switch cabinet for locomotive power supply, comprising: at least one incoming line cabinet, at least one feeder line cabinet, terminal cabinet, negative pole cabinet and rail potential cabinet, wherein the incoming line cabinet and the feeder line cabinet , terminal cabinet, negative pole cabinet and rail potential cabinet realize data communication through high-speed industrial communication bus, each incoming line cabinet, feeder cabinet, terminal cabinet, negative pole cabinet and rail potential cabinet are equipped with multiple wireless temperature sensors for On-line monitoring of breakpoints in the cabinet, busbar and cabinet ambient temperature, and use the receiver to collect and process the temperature signal monitored by the above wireless temperature sensor, and analyze the received temperature data, when judging the temperature data When the corresponding threshold is exceeded, an alarm signal is sent to prompt the user. Realize the online real-time monitoring and alarm of the temperature of the electrified body, avoid serious burning due to excessive temperature, improve the safety reliability and service life of the DC switchgear, and avoid accidents.

Description

technical field [0001] The invention relates to the technical field of locomotive power supply, in particular to an online temperature measurement system for a DC switch cabinet for locomotive power supply. Background technique [0002] In the existing DC switchgear for locomotive power supply, for the interval between circuit breakers, in order to facilitate maintenance, the circuit breakers are installed on the handcart, and the cabinet adopts a removable structure design. This kind of contact structure adopts the occlusal contact of the dynamic and static contacts. Due to the contact resistance, the contact part will be heated. If the contact is not good, the temperature at the contact point will be too high during operation. In severe cases, it will be burned and cause accidents. At the same time, during on-site operation, the dynamic and static contacts of the switchgear will cause different degrees of wear and ablation due to the load current, which will increase the c...

AI Technical Summary

Problems solved by technology

This kind of contact structure adopts dynamic and static contacts. Due to the contact resistance, it will cause the contact part to heat up. If the contact is not good, the temperature at the contact point will be too high during operation, and it will be burned in severe cases, resulting in accidents.

At the same time, during the on-site operation, the dynamic and static contacts of the switchgear will cause different degrees of wear and ablation due to the load current, which will increase the contact resistance and greatly reduce the reliability of the switchgear

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