Comprehensive fire fighting system and comprehensive fire fighting method of large-size oil-containing equipment of transformer substation

Abstract

The invention provides a comprehensive fire fighting system of large-size oil-containing equipment of a transformer substation. The comprehensive fire fighting system comprises a main controller, an oil discharging and nitrogen filling device, a dry powder fire fighting device and the oil-containing equipment of the transformer substation, wherein input and output ends of the main controller are connected with the oil discharging and nitrogen filling device and the dry powder fire fighting device respectively; the oil discharging and nitrogen filling device is used for monitoring and collecting state parameters of a transformer in real time, transmitting the state parameters to the main controller, and receiving a corresponding control signal of the main controller; and the dry powder fire fighting device is used for monitoring and collecting state parameters of the oil-containing equipment of the transformer substation in real time, transmitting the state parameters to the main controller, and receiving a corresponding control signal of the main controller. According to the comprehensive fire fighting system, an oil discharging and nitrogen filling technology is combined with a dry powder fire fighting technology; after the working condition of the large-size oil-containing equipment of the transformer substation is comprehensively considered, the automatic control is carried out and a redundancy control signal is added so that the false action and the malfunction are prevented to the greatest extent; fire fighting monitoring and automatic fire fighting functions of the large-size oil-containing equipment of the transformer substation with the power of 500kV and above are improved, so that the effects of effectively preventing and putting out fire are realized.

Description

technical field [0001] The invention relates to the field of substation fire protection safety, in particular to a fire protection system and method for oil-containing equipment. Background technique [0002] Transformers, reactors, and capacitors, which are the core primary equipment in substations, mostly adopt oil-immersed natural cooling type, and the amount of mineral insulating oil is huge. It is about 130 tons, the single-phase oil weight of the adjustment and replacement transformer reaches about 48 tons, and the single-phase oil weight of the high-voltage reactor reaches about 70 tons. The insulating oil used has a flash point of 135-150°C, an ignition point of 165-195°C, and a spontaneous ignition point of about 332°C. It is easy to evaporate and burn, and can form an explosive mixture when mixed with air. In the event of severe overload, short circuit and other faults, the insulator and oil will vaporize rapidly under the action of the arc, causing the internal p...

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Problems solved by technology

[0004] During the actual use of the oil discharge and nitrogen injection device, there are various degrees of misoperation. When the misoperation occurs, the transformer is still working with load. At this time, the oil discharge will cause irreversible damage to the transformer, so it is often switched to "manual operation". ", in this state, the fire cabinet needs to be opened on the spot before it can be put into use, and once a fire breaks out in the transformer, it is difficult for personnel to approach the fire cabinet, which fails to play its due role

[0005] At present, the fire-fighting methods for capacitors and reactors are mainly video and manual fire-fighting equipment, and there are no automatic fire-fighting facilities

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