Transformer fire protection judgment method and system for fire protection linkage

Abstract

The invention discloses a transformer fire protection judgment method and system for fire protection linkage. The method comprises the steps that: monitoring signals outputted by a fire protection sensor in a range where a transformer is located are obtained, whether there is a fire or not is judged; the state signal of a switch connected with the transformer is acquired, and whether the state signal is a switched-off state signal or not is judged, and the switch is used for on-off connection between the transformer and a power grid; the voltage quantity and the current quantity of the transformer are acquired, and whether the voltage quantity and the current quantity of the transformer are both 0 or not is judged; and if a fire hazard exists, the state signal of the switch is the switched-off state signal, and the voltage quantity and the current quantity are both 0, a fire-fighting equipment permitted action signal is outputted, otherwise, fire-fighting equipment is forbidden to act.According to the method and system of the invention, a plurality of signals such as the fire signal, the switched-off state signal, the voltage quantity, the current quantity and the like are combined to serve as judge logic, so that a protection action signal, namely the fire-fighting equipment permitted action signal is outputted only when four conditions are met at the same time, and therefore, logic judgment is more accurate, and maloperation prevention capability is improved.

Description

technical field [0001] The invention relates to the field of electric fire protection, in particular to a transformer fire protection judging method and system for fire linkage. Background technique [0002] Transformers are extremely important electrical equipment in power transmission and distribution systems. Due to their internal insulating liners and brackets, most of them are made of organic combustible materials such as cardboard, cotton yarn, cloth, and wood. They also contain a large amount of combustible insulating oil inside. Severe overload, short circuit, these combustible substances will be affected by high temperature or electric arc, decompose, expand and even gasify, causing the internal pressure of the transformer to increase sharply. There is also the danger of further expansion of the fire, therefore, transformer fire protection is a very important task. [0003] At present, the judgment logic of transformer fire protection is relatively simple. Generall...

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Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a transformer fire protection judging method and system for fire-fighting linkage, so as to solve the problem that the judging logic of the existing transformer fire protection is relatively simple, and it is easy to cause misoperation of fire-fighting equipment. technical problem

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