Coal mine underground power supply system electric energy quality monitoring device

Abstract

The invention relates to the field of power supply system electric energy monitoring, in particular to a coal mine underground power supply system electric energy quality monitoring device. The coal mine underground power supply system electric energy quality monitoring device comprises an explosion-proof shell body, a monitoring module, a signal transmission unit, a display module and a power module, wherein the interior of the explosion-proof shell body is divided into a main cavity and a wiring cavity by a partition plate; the main cavity is used for placing composition units and components, a monitoring module, a signal transmission unit and a power supply module are arranged in the main cavity, the signal transmission unit is in signal connection with a display module arranged on a door body of the shell body, and an outlet circuit of the power supply module is connected with a miniature circuit breaker in series. Sampled data are subjected to electric energy quality calculation,processing and display through using the monitoring module, a processing result can further be uploaded to a ground centralized control center through using an underground Ethernet and fused with a ground power supply system monitoring system, monitoring and data sharing of the whole mine electric energy quality are conducted, and on-site and on-line monitoring of the underground electric energy quality is achieved.

Description

technical field [0001] The invention relates to the field of electric energy monitoring of a power supply system, in particular to a power quality monitoring device for an underground coal mine power supply system. Background technique [0002] Since 2002, my country has continuously strengthened the requirements for safe production in coal mines, and the coal industry has begun to carry out large-scale technological upgrading and transformation. At present, the degree of automation and informatization of coal mines is constantly improving. With the continuous development of smart grid technology and Internet of Things technology, coal mine intelligent power supply systems are also becoming more and more popular. While the demand for electricity in coal mines increases, the requirements for power quality are also getting higher and higher. The quality of power quality directly affects the safety of production in coal mines. It is necessary to conduct in-depth research on onl...

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Problems solved by technology

[0003] The research on power quality in my country started relatively late, so the research on power quality monitoring is also relatively backward.

Compared with foreign detection devices, domestic products have the disadvantages of incomplete detection functions and low precision

[0004] At present, the traditional power quality monitoring system or device is only suitable for the conventional environment on the ground. It is not explosion-proof, and cannot monitor the power supply equipment in the explosive environment. Some of the performance indicators lead to the inability of the staff to discover problems in a timely and comprehensive manner, and then fail to deal with the corresponding faults quickly and accurately, thus causing power supply accidents

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