High voltage safe cross-linked protective system of locomotive

Abstract

The invention relates to a high-voltage safety linkage protect system, wherein it combines hardware and control software, uses program control; its hardware comprises key box, grounding switch and high- voltage locks on devices, which are connected via the software interface to form the high- voltage safety linkage protect system, to realize inter-lock via keys. And the invention comprises following program that: a, when reaching the high-voltage device, it uses hardware interlock and control software, to avoid lifting electric arc and closing the main breaker; b, when reaching the high-voltage device, the vehicle circuit is grounded; c, when powering the vehicle, the power connector is cut off, to improve the safety, and using the hardware feedback signal to detect the system and realize intelligent display function.

Description

technical field [0001] The invention relates to a locomotive safety protection device, specifically a high-voltage safety interlock protection system for locomotives, which is mainly used in various electric locomotive control systems, and can also be used in control systems of other locomotives. Background technique [0002] Domestic locomotives generally use key boxes and high-voltage door locks for high-voltage interlock protection. Insert the locomotive key and the direction handle into the key box, take out the key to open the door of the high-voltage screen cabinet to open the door of the high-voltage screen cabinet, and cut off the air supply pipeline of the pantograph and the main circuit breaker, ensuring that the operator is protected when approaching the high-voltage equipment. The pantograph cannot be raised and the main circuit breaker cannot be closed. However, when people approach the high-voltage equipment, this system cannot guarantee that the high-voltage ...

AI Technical Summary

Problems solved by technology

This system can only ensure that when the operator approaches the high-voltage equipment, the pantograph of the locomotive has been lowered, the main circuit breaker has been disconnected, and the primary circuit of the locomotive has been grounded. There is no mechanical or electrical interlock. The personal safety of the operator cannot be guaranteed, and there are potential safety hazards

And on the electric locomotive with train power supply, it can only be ensured through the operation specification that when the train power supply is connected, the train power supply socket is without electricity, and there is also a potential safety hazard; therefore, it is necessary to improve this

Images