High-speed railway traction substation limited space accidental entering prevention monitoring system

Abstract

A high-speed railway traction substation limited space accidental entering prevention monitoring system is formed by a main control system, an SF6 monitoring system, an O2 monitoring system, a water level monitoring system, an air exhaust control system and a display alarm system. The main control system is installed in the control room of a traction substation. The SF6 monitoring system is installed in the high voltage room and the cable interlayer of the traction substation. The O2 monitoring system is installed in the control room, the high voltage room and the cable interlayer of the traction substation. The water level monitoring system is installed in the cable interlayer of the traction substation. The air exhaust control system is installed in the control room and the high voltageroom of the traction substation, or in the control room, the high voltage room and the cable interlayer of the traction substation. The display alarm system is installed at the entrances of the control room, the high voltage room and the cable interlayer of the traction substation. The instant state of a limited space can be monitored in real time, a measured value is remotely transmitted, automatic remote alarm can be achieved and a hidden danger can be timely discovered and processed; and the safety of a low area and limited space operation in the traction substation is ensured.

Description

technical field [0001] The invention relates to an anti-mis-entry monitoring system, in particular to an anti-mis-entry monitoring system for a limited space of a high-speed railway traction substation, which is suitable for traction substations (including AT substations and partition substations) of high-speed railway traction power supply systems, Oxygen deficiency, SF 6 (Sulfur hexafluoride) Occupies the monitoring of low-lying areas, flooding and other limited spaces. Background technique [0002] At present, the Beijing-Guangzhou high-speed railway has adopted many new technologies and new processes, but due to the single and limited monitoring means in actual operation, it cannot meet the relevant requirements of the Railway Corporation and the Railway Bureau regulations, and even endangers the personal safety of on-site operators. Mainly reflected in the following aspects: [0003] 1) There is a danger of mistakenly entering the forbidden system; [0004] At presen...

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Problems solved by technology

[0005] For example, on September 23, 2015, the automatic fire extinguishing system of the Beiyang Village AT Station of the Beijing-Guangzhou High-speed Railway had malfunctioned. Entering during the eruption of the heptafluoropropane automatic fire extinguishing system will cause personal injury

On September 22, 2015, when 4 employees of the Guangzhou Power Supply Section of the Guangzhou Railway Group were inspecting the cable trench as planned at Guangzhou South Railway Station, one employee opened the manhole cover and went down to the well because the outlet of the forced drainage well was blocked due to the cable communication. When dredging, a large amount of toxic gas gushed out with the water flow, causing the worker to suffocate and fainted on the ladder. Two more workers went down to the well for rescue one after another. Due to inhalation of a large amount of toxic gas, they fell into the bottom water of the well and suffocated, resulting in 2 workers being rescued. invalid death

The lessons of blood tell us that the monitoring of limited space is necessary and should be real-time. At this stage, the operation in limited space has become a huge threat to the safety of maintenance operations

[0006] 2) SF 6 The inspection and maintenance of the cable interlayer in the low-level area of ​​the power distribution device endangers personal safety;

Although portable oxygen testers and SF 6 The gas content tester can be conveniently tested on site, but the premise is that someone must place the instrument in a limited space and read the content value. If there is a real environmental problem, it will cause personal injury to the person who placed and read the value

[0008] 3) The status of high-voltage cables cannot be grasped in real time;

[0010] 4) It is impossible to grasp the status of the equipment site in real time;

[0012] To sum up, at this stage, most railway power supply departments do not have better on-site detection methods for limited spaces such as cable interlayers, no remote alarm and anti-mis-entry equipment, and no effective real-time detection of hypoxia, SF, etc. 6 The facilities and equipment with excessive content and water accumulation in the cable interlayer face a very severe safety situation when operating in these limited spaces

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