Extinguishing method special for high-voltage switch cabinets

Abstract

The invention discloses an extinguishing method special for high-voltage switch cabinets. The method comprises the following steps that the high-voltage switch cabinets of a high-voltage substation are numbered in sequence according to positions and are divided into an overground high-voltage switch cabinet area, an adjacent cabinet body bottom cable channel area and an underground cable area; three clean gas extinguishing spray devices are installed on each high-voltage switch cabinet; when the temperature inside the cabinets reaches a first critical value, a temperature detector inside a certain cabinet triggers an alarm, and the corresponding clean gas extinguishing spray device is started; and when the temperature inside the cabinets reaches a second critical value, the corresponding three clean gas extinguishing spray devices are directly started and the alarm is started, and the spaces inside the cabinets, cables and cable channels at the bottoms of the adjacent cabinets are subjected to spray extinguishing. According to the method, the high-voltage indoor cabinets are numbered, the positions and adjacent information are recorded, network structural extinguishing is achieved,the fire behavior is controlled, and the method has the characteristics that starting is fast, and the extinguishing time is short.

Description

technical field [0001] The invention relates to a special fire extinguishing method for a high-voltage switch cabinet, which belongs to the technical field of fire extinguishing. Background technique [0002] Switchgear is a kind of electrical equipment that provides installation and fixation for various electrical appliances. Its main function is to open and close, control and protect electrical equipment during power generation, transmission, distribution and power conversion in the power system. After the switchgear has been in operation for a long time, the internal electronic components will increase due to aging, oxidation or operating vibration, resulting in an increase in the contact resistance of the diversion position and a large amount of heat. If the heat cannot be dissipated through the cooling holes of the switchgear, the Accumulation will intensify the oxidation of the contact position, forming a vicious circle, and disasters such as arcing or burning will occ...

AI Technical Summary

Problems solved by technology

However, due to the special electrical components in the switchgear, mainly wires and cables, if they catch fire and put out the fire with water, the insulation performance of the electrical equipment will be reduced, endangering nearby firefighters

At the same time, the distance between the switch cabinets is small. When any cabinet catches fire, its high temperature can be quickly transmitted to the adjacent cabinets, causing the adjacent cabinets to catch fire.

[0003] In the high-voltage substation, it is difficult to deploy the medium pipe network fire extinguishing system and the suspended fire extinguishing system. Usually, the fully submerged cabinet type fire extinguishing system is used as a fire safety protection measure, but it is impossible to implement fixed-point fire extinguishing for the switch cabinet, and the efficiency of fire extinguishing and cooling is low.

[0004] In summary, there is a lack of targeted fire extinguishing methods suitable for high-voltage switchgear in the prior art

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