AC differential protection and electric energy intelligent management integration device

Abstract

The invention relates to an AC differential protection and electric energy intelligent management integration device. An electric energy intelligent management integration device is used to replace anupper-level circuit breaker and a lower-level circuit breaker in the traditional circuit, and in the circuit, a plurality of lower-level intelligent management integration devices are parallelly connected in the upper-level intelligent management integration device; each intelligent management integration device comprises an intelligent management module and a circuit breaker, and the intelligentmanagement module controls the circuit breaker; in the intelligent management module, the acting time and the acting current of the upper-level circuit breaker and the lower-level circuit breaker areset through a CPU processing module, the acting current of the upper-level circuit breaker is larger than that of the lower-level circuit breaker, and the acting time of the upper-level circuit breaker is longer than that of the lower-level circuit breaker. The quick-break function of the circuit breaker is cancelled, the CPU is adopted to control break of the circuit breaker, actions of the circuit breaker can be decided from two parameters of time and current, and happening of level-skip tripping can be intelligently avoided.

Description

【Technical field】 [0001] The invention belongs to the field of intelligent circuit management, in particular to an integrated device for AC differential protection and electric energy intelligent management. 【Background technique】 [0002] Household electricity consumption is one of the main channels of electric energy consumption. With the development of economy and technology level, household electricity consumption is increasing. The most common application of AC molded case circuit breakers is the protection switch and leakage protection switch at the lower end of the ammeter of residential users. At present, the state of one switch for one household has been realized. [0003] During household electricity use, the circuit breaker will automatically trip when the line is short-circuited, leaked, or overloaded to protect the function of the electrical equipment and the next-level line. If the circuit breaker "refuses to trip" during operation, it will pose a greater thre...

AI Technical Summary

Problems solved by technology

The third is that the upper and lower level circuit breakers receive action commands at the same time. Due to the different sensitivities of the mechanism actions, the higher sensitivity of the upper level will cause the first action to trip.

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