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Cable warning and fire fighting comprehensive system for transformer substation and laying method thereof

An integrated system and substation technology, which is applied in the field of substation cable early warning and fire protection integrated system and its laying field, can solve the problems of cable fire accidents that cannot be timely and effectively controlled, single monitoring measures for substation cables, and no fire protection monitoring system. The effect of reducing the degree of fire hazard, reducing maintenance costs, and ensuring personnel safety

Inactive Publication Date: 2014-09-17
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Considering the above factors, the current monitoring measures for substation cables are relatively single, and cannot be monitored day and night throughout the entire line, and there is no fire monitoring system specifically for the characteristics of the cable laying area. Timely and effective control

Method used

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  • Cable warning and fire fighting comprehensive system for transformer substation and laying method thereof
  • Cable warning and fire fighting comprehensive system for transformer substation and laying method thereof
  • Cable warning and fire fighting comprehensive system for transformer substation and laying method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0092] Embodiment 1 is the application of the integrated cable early warning and fire protection system of the present invention in cable trenches.

[0093] Cable trenches are mainly distributed outdoors, 10kv switch room, GIS room, indoor capacitor room, arc suppressing coil room, etc. Because of the closed space, considering factors such as cost and performance, this embodiment adopts temperature-sensing cables and linear infrared beams The smoke and temperature detector is used as a detection device in a relatively closed space, and the fire system uses a gas storage type dry powder fire extinguisher, which not only avoids the dissipation of the complete gas fire extinguishing system and weakens the fire extinguishing effect, but also enables the dry powder to be effectively dispersed in the ditch.

[0094] Working process: The temperature-sensing cable sends the collected signal to the fire alarm control system, and the linear infrared beam smoke and temperature detector as...

Embodiment 2

[0095] The second embodiment is the application of the cable early warning and fire protection integrated system of the present invention in the cable tray.

[0096] The cable bridge is generally set on the top of the 10kV switch room, the cables are enclosed in a metal box, the protection object is single and the distance is not too long, and it belongs to the unmanned operation area. Considering the above factors, this embodiment adopts the temperature-sensitive cable as the detection device, and the fire protection system Use fire detector device. It avoids the problem that a dry powder fire extinguishing device cannot be installed in a small space, and has the advantage of being able to make good use of a small amount of fire extinguishing agent for long-distance fire protection in a closed space.

[0097] Working process: The temperature-sensing cable monitors the temperature of the cable in the bridge frame in real time. When a fire breaks out, the fire detector tube is ...

Embodiment 3

[0098] The third embodiment is the application of the cable early warning and fire protection integrated system of the present invention in the cable shaft.

[0099] The cable shaft mainly connects two areas with different plane heights, such as the shaft between the 10kV switch room and the GIS room, and the shaft between the 10kV switch room and the secondary equipment room. The space is relatively closed and belongs to the unmanned operation area. The shaft will produce a "chimney effect" to pull the smoke upward when a fire occurs, so gaseous fire extinguishing agents cannot be used. Considering the above factors, in this embodiment, the detection system adopts a temperature-sensing cable, and the fire protection system adopts a suspended dry powder fire extinguisher.

[0100] Working process: The temperature-sensing cable outputs the collected signal to the fire alarm control system. When the temperature exceeds the threshold set by the control chip in the fire alarm con...

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Abstract

The invention discloses a cable warning and fire fighting comprehensive system for a transformer substation. The system includes a detection system, a fire alarm control system and a fire fighting system. The detection system includes a temperature sensing cable, a characteristic gas detection device, and a linear infrared beam smoke and temperature sensing detector; the fire alarm control system comprises a controller and an alarm device; and the fire fighting system includes a fire trace tube, a suspension-type dry powder fire extinguisher, and a storage-type dry powder fire extinguisher. The invention also discloses a laying method of the cable warning and fire fighting comprehensive system for the transformer substation. The invention considers the factor that cables in a transformer substation have different conditions within different regions, so that detection warning and fire extinguishing devices are employed for cables in different conditions, and different laying methods are employed to ensure personnel safety, improve work efficiency of the cables in the transformer substation, reduce the level of fire hazard in the transformer substation, and greatly reduce the maintenance cost.

Description

technical field [0001] The invention relates to a system and a laying method thereof, in particular to a substation cable early warning and fire protection integrated system and a laying method thereof. Background technique [0002] Economic growth has led to rapid development of the power system, and more and more substations have been put into operation. Various cables laid in the substation include a large number of high-voltage power cables, low-voltage control cables, and optical cables for communication, etc., distributed in cable trenches, bridges, shafts, interlayers, etc., to connect various electrical equipment into one. Due to site constraints, power cables and control cables cannot be stored in separate trenches in the substation. In addition, the fire prevention measures in these parts are relatively simple, and the environment is mostly poor. In addition, the cable density in some places is high, and operation and maintenance are difficult. Cable fire accident...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C31/00H04L29/08H04N7/18G08B17/00
Inventor 范明豪李伟王贻平汪书苹武海澄祁炯陈锋
Owner STATE GRID CORP OF CHINA
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