Intelligent electric carrier classification locking device

Abstract

The invention provides an intelligent electric carrier classification locking device, which is characterized by comprising an electric wire coupler connected with a low-voltage electric wire, wherein an electric wire signal modulator-demodulator is connected with the electric wire coupler through a signal receiver and a signal emitter; and a digital signal interface is connected with the electric wire signal modulator-demodulator through a single chip microprocessor. With the adoption of the intelligent electric carrier classification locking device provided by the invention, the defects in the prior art can be overcome; a fault circuit and a non-fault circuit can be automatically judged; and a power supply of the fault circuit can be automatically switched off, and the fault circuit is locked, so that the occurrence of the large-area switched-off circuit caused by error operation of staff and the hidden dangers of directly causing personal security due to illegal operation can be avoided. Furthermore, the intelligent electric carrier classification locking device has no need of wiring; the cost is lowered; and the convenience in use is realized.

Description

technical field [0001] The invention relates to an intelligent power carrier hierarchical blocking device, which belongs to the technical field of power supply system protection. Background technique [0002] At present, most domestic underground power supply systems adopt a multi-level system, and there is no locking function between the upper and lower levels. When the lower level is overhauled, most of them call or send people to cut off the power. People often go to open the cover for maintenance, and the phenomenon of live operation often occurs. This kind of illegal operation directly endangers the safety of life. [0003] There is a serious safety hazard if the cover is opened without power off. Usually, the locking device for opening and closing the door cover only blocks the power supply on the load side, but cannot cut off the power supply on the power side. It is precisely that the power supply on the power side is the place that least attracts the attention of m...

AI Technical Summary

Problems solved by technology

Faults such as grounding and short circuit caused by misoperation will be detected by multiple superiors, resulting in leapfrog tripping, resulting in large-scale power outages, which not only affect production, but also bring unsafe factors to the mine

So far, there is no mechanical and electrical interlocking device on the upper cover of the wiring cavity, only the prompt words "power off first, then open the cover", which cannot completely eliminate illegal operations or misoperations

[0004] There are many underground electrical equipment, and there are many monitoring points and locking points. If wired control is adopted, the number of cables will inevitably increase, and the utilization rate of cables is low.

If wireless remote control is used, it is not suitable for the underground environment

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