On-line monitoring device of operating state of mining high-voltage distribution isolating switch

Abstract

The invention discloses an on-line monitoring device of an operating state of a mining high-voltage distribution isolating switch. The device comprises a current transformer, three vibration sensors, three infrared temperature sensors, a current signal conditioning module, a vibration signal conditioning module, a data acquisition module, a frequency tracking module, a microprocessor module, a data storage module, a setting module, a display module and the like, wherein the current transformer is connected with the current signal conditioning module; the vibration sensors are connected with the vibration signal conditioning module; the current signal conditioning module is connected with input ports of the infrared temperature sensors and the data acquisition module; an input end of the frequency tracking module is connected with any output port of the current signal conditioning module; the frequency tracking module is connected with the microprocessor module; and the vibration signal conditioning module, the data acquisition module, the data storage module, the setting module, the display module and the like are respectively connected with an analog / digital (AD) interface, a data line, an address line, a control line, a general purpose input / output (GPIO) interface and an asynchronous serial interface of the microprocessor module. By adoption of the device, the problem of state on-line monitoring of the contact temperature, flowing current and vibration change of the isolating switch is solved.

Description

technical field [0001] The invention relates to an on-line monitoring device for the operating state of a high-voltage power distribution isolating switch for mines, in particular to an on-line monitoring device for the operating state of the isolating switch under load. Background technique [0002] High-yield, high-efficiency, comprehensive mechanized and automated coal mining work puts forward higher requirements for the continuity, reliability and safety of mine power supply, especially the high-voltage power supply line that supplies power to the mine's main ventilator, whose power supply continuity directly affects the coal mine. Safe Production. As an important part of the high-voltage power supply system, the isolating switch in the mine-used high-voltage power distribution device plays the role of isolating or connecting high-voltage lines, and its operating status is related to the stability of the terminal load power supply. Mine-used high-voltage power distribut...

AI Technical Summary

Problems solved by technology

[0005] The invention provides an on-line monitoring device for the operating state of a high-voltage power distribution isolating switch used in mines to solve the problem of on-line monitoring of the state of the isolating switch contact temperature, current flowing and vibration changes, and overcome the inability of the current isolating switch to detect power failure and a single monitoring parameter. Issues that provide comprehensive failure information

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