Mine protection power monitoring system

A power monitoring and mine-used technology, applied to electrical components, circuit devices, etc., can solve problems such as unstable performance, slow processor speed, and low precision, and achieve the effect of convenient manual setting adjustment

Inactive Publication Date: 2013-05-15
上海久创电气自动化设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage of this technology is that the processor speed is slow, the accuracy is not high, the performance is unstable, and the current transformer needs to be replaced for different rated current levels, so it is more troublesome to use

Method used

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  • Mine protection power monitoring system
  • Mine protection power monitoring system
  • Mine protection power monitoring system

Examples

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Embodiment 1

[0017] Such as figure 1 As shown, this embodiment includes: a main controller terminal connected through a communication network and several monitoring terminals, wherein:

[0018] The monitoring terminal outputs differential signal information to the main controller, and receives the differential signal information from the main controller.

[0019] Such as figure 2 As shown, the main controller end includes: dual central controller units, acquisition unit, analog-to-digital conversion unit, operational amplification unit, communication unit, output unit and power supply unit, wherein: the acquisition unit is connected to the current and voltage from the external After the signal is sampled, perform filter protection, isolation processing, and output the analog signal to the operational amplifier unit. The operational amplifier unit amplifies the signal and outputs it to the analog-to-digital conversion unit for analog-to-digital conversion. The analog-to-digital conversion...

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Abstract

The invention discloses a mine protection power monitoring system. The mine protection power monitoring system comprises a main controller terminal and a plurality of monitoring terminals, wherein the main controller terminal and the plurality of monitoring terminals are connected through a communication network. The monitoring terminals output differential signal information to the main controller terminal and receive differential signal information of the main controller terminal. The mine protection power monitoring system can be used for a mine high-voltage distribution switch and a high-voltage magnetic starter, and contains 6kV and 10kV voltage classes and 5-630A rated operational currents. Because a double-central-controller unit is used for controlling, the power monitoring system is higher in precision, more accurate, more stable in performance and faster in processing speed, and can set and calibrate in a full digitalization mode. The power monitoring system is provided with protection functions such as undervoltage, overvoltage, overload, short circuit, phase equilibrium, earth leakage protection (grounding protection) and insulation monitoring, remote metering-remote signaling-remote controlling-remote regulating functions in a form of RS485 or a controller area network (CAN) bus, a calendar clock, and a fault memorizing and searching function. A current transformer or a hollow current transformer can be selected for use without replacing current transducers for different rated current classes.

Description

technical field [0001] The invention relates to a device in the technical field of power monitoring, in particular to a mine protection power monitoring system. Background technique [0002] With the continuous expansion of coal mine production scale, safety accidents continue to occur. In recent years, the state has gradually increased the supervision of the survival of coal mines, ensuring the safety of coal mine production from the source, and making every effort to ensure the power supply quality of the underground grid. Therefore, coal mine electromechanical equipment is developing in the direction of high voltage and high power. Protectors for high-voltage power distribution devices As a kind of high-voltage power supply control equipment, its use and consumption are also greatly increasing, and its safety performance is becoming more and more serious. The sensitivity, reliability, accuracy and rapidity of its protection are directly related to the safe production of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 周冠军孙建华张炜王雪清周艳艳
Owner 上海久创电气自动化设备有限公司
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