Arc fire detection method

Abstract

The invention discloses an arc fire detection method which comprises the steps of monitoring a to-be-detected line, calculating the monitoring information, identifying a normal arc and a dangerous arc, and driving a circuit breaker to act according to the distinguished arc types, so that the misoperation of the circuit breaker is avoided, the stability and the safety of the line are ensured, the protection function of the circuit breaker becomes more complete, and the protection working range is larger.

Description

technical field [0001] The invention relates to the technical field of electric arc fire protection, in particular to an arc fire detection method. Background technique [0002] With the rapid development of my country's economy and the improvement of people's living standards, various electrical equipment are widely used in people's lives. In the event of an arc fault, (arc discharge) an arc will occur even within the rated current range. When the arc occurs, heat will be generated, (greater than 3000 degrees) enough to ignite nearby combustibles. [0003] The fault arc is characterized by high temperature, small current, and short duration. Once a breakdown point occurs, a discharge arc will occur frequently, which will generate a lot of heat, ignite the surrounding flammable and explosive products, and cause an electrical fire or even an explosion. , while traditional fuses and electronic circuit breakers cannot meet the detection of arc faults, this is because current ci...

AI Technical Summary

Problems solved by technology

[0003] The fault arc is characterized by high temperature, small current, and short duration. Once a breakdown point occurs, a discharge arc will occur frequently, which will generate a lot of heat, ignite the surrounding flammable and explosive products, and cause an electrical fire or even an explosion. , while traditional fuses and electronic circuit breakers cannot meet the detection of arc faults, this is because current circuit breakers are designed to detect the role of rated overload current, low-level arc current is small, even less than the rated current, current circuit breakers cannot have Response; while the current of the high-level arc is large, but its duration is too short, the traditional circuit breaker cannot take protective action in time, and the arc has been extinguished

At the same time, because traditional circuit breakers cannot distinguish between normal arcs and fault arcs, misoperations often occur. Therefore, it is necessary to detect fault arcs and prevent electrical damage and even fires caused by fault arcs in time.

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