Cable fire-fighting linkage system and method based on Internet of Things and fusion of multiple sensors

Abstract

The invention relates to a cable fire-fighting linkage system based on the Internet of Things and fusion of multiple sensors. The system comprises a monitoring host, multiple sensors and a fire extinguishing device, the system is characterized in that the monitoring host is used for collecting cable data collected by various sensors and comprehensively calculating and analyzing a cable fire risk value. If the calculation result exceeds a set threshold value, the fire extinguishing device is controlled to automatically extinguish fire; the monitoring host comprises a wireless protocol integration module, a positioning module and an IO control module, wherein the wireless protocol integration module is used for receiving data acquired by the plurality of sensors; the sensors adopt one of four communication protocols of Lora, Zigbee, WIFI and NB-IoT, the positioning module adopts a GPS and / or Beidou system to position the monitoring host, and the IO control module is used for being connected with a fire extinguishing device to achieve automatic control of the fire extinguishing device. The holographic sensing capability of the power cable is formed, the accuracy of early warning of afire disaster is effectively improved, and the operation safety of a power grid is guaranteed.

Description

technical field [0001] The invention relates to the field of online analysis systems for cable fire protection, in particular to a cable fire protection linkage system and method based on the fusion of the Internet of Things and various sensors. Background technique [0002] With the development of urbanization, more and more cables are used for power transmission and distribution lines, such as high-voltage cables in 35KV-220KV substations, high-voltage cables outside substations, 10KV distribution network cables, etc. The cables are safe to operate under normal working conditions However, it is affected by internal factors such as cable head failure, long-term operation insulation aging, long-term overload operation, protection (switch) device cannot be removed in time, cable itself quality or installation process is not up to standard, or external mechanical damage, laying defects, other Miscellaneous Under the action of external factors such as object fire, the outer ins...

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Problems solved by technology

[0002] With the development of urbanization, there are more and more cables for transmission and distribution lines, such as high-voltage cables in 35KV-220KV substations, high-voltage cables outside substations, 10KV distribution network cables, etc. The cables are safe to operate under normal working conditions However, it is affected by internal factors such as cable head failure, long-term operation insulation aging, long-term overload operation, protection (switch) device cannot be removed in time, cable itself quality or installation process is not up to standard, or external mechanical damage, laying defects, other Miscellaneous Under the action of external factors such as fire, the outer insulating layer will ignite due to local instantaneous overheating, and spread and burn along the cable, spreading from one area to another, resulting in serious accident consequences.

[0003] On the one hand, the traditional cable fire monitoring system has little monitoring data information, such as only using smoke detection equipment, pyroion detection equipment, video equipment, etc., resulting in inaccurate early judgment and early warning of cable fires. On the other hand, the partial discharge of the cable body , circulation, load and other monitoring data are not integrated with the cable service environment data, and it is impossible to provide a comprehensive early warning of the origin of the cable fire

At the same time, the cable monitoring system does not link all the monitoring data with the control signals of the fire extinguishing device, so the degree of automation and intelligence is low

This leads to the fact that the alarm can only be issued after the fire occurs to a certain stage. At this time, the best time to deal with it has been missed, and a large number of fire warnings are inaccurate, causing irreparable losses to the power system or unnecessary loss of people, property and property.

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