Mine electric power monitoring system and method

Abstract

The invention relates to a mine electric power monitoring system and method, and belongs to the technical field of mine underground power supply. The system comprises an electric power sub-control center, a core switch and a monitoring center station, wherein the switch equipment of the electric power sub-control center comprises a mine intelligent integral protector, a short circuit current collection module and a lock-up controller. The method comprises a mine electric power monitoring method and a mine electric power override trip prevention method. The mine electric power override trip prevention method comprises the following steps that a short circuit current collection module collects circuit short circuit current; the lock-up controller sends a short circuit lock-up signal to the mine intelligent integral protector, and sends the short-circuit switch position to the monitoring center station; the mine intelligent integral protector locks the fast switch-off protection function of the current state total switch and the upper stage power transmission sub switch; the override trip is prevented. The system and the method provided by the invention have the advantages that the override trip problem of the coal mine underground electric network short circuit can be solved; the problem of unattended operation of the coal mine underground power supply management can be solved; the coal mine underground electric network fault diagnosis time can be shortened; the accident range can be reduced.

Description

technical field [0001] The invention belongs to the technical field of mine underground power supply, and in particular relates to a mine power monitoring system and method. Background technique [0002] With the continuous improvement of coal mine mechanization and automation level, the dependence on power supply security is getting stronger and stronger. The failure of underground power supply and distribution equipment often brings serious safety hazards to underground production. Therefore, it is urgent to improve the rationality of power grid operation. and the reliability of the coal mine power supply system. However, due to the limitations of coal mine underground power supply network construction standards and environmental conditions, many advanced and mature technologies cannot be applied to coal mine underground. In addition, coal mine underground is short due to short power supply lines, insufficient reactive power, load impact, frequent equipment movement, and b...

AI Technical Summary

Problems solved by technology

Leapfrog trips cause large-scale power outages underground, which not only seriously affects production, but also easily induces power outages and wind and wind accidents, seriously affecting coal mine personnel and production safety

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