Intelligent multi-path data acquisition device and method for circuit breaker

Abstract

The invention discloses an intelligent multi-path data acquisition device for a circuit breaker. The device comprises an industrial personal computer, a data acquisition card, a power operational amplifier circuit, a signal source circuit, a plurality of relay control circuit groups, a drive circuit, a single-chip microcomputer control circuit and a level conversion circuit. The industrial personal computer is connected with the level conversion circuit and the data acquisition card; the data acquisition card is connected with the power operational amplifier circuit; the power operational amplifier circuit is connected with the signal source circuit; the plurality of relay control circuit groups are connected with the power operational amplifier circuit and the signal source circuit; the drive circuit is connected with the single-chip microcomputer control circuit and the relay control circuits; and the level conversion circuit connected to the single-chip microcomputer control circuit. According to the invention, the data collection accuracy is high and the automation degree is high.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a device and method for intelligent multi-channel data collection of circuit breakers. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. In the construction of distribution network automation system, the problem of power acquisition of automation devices has always been a major bottleneck in the upgrading and transformation of distribution network lines. Some use high-voltage voltage transformers to obtain pow...

AI Technical Summary

Problems solved by technology

In the implementation and application, either the investment is large, or the wiring is complex and unreliable, and it may be affected by external factors such as environmental location, weather and load, which limits the development of distribution network automation.

For this reason, someone has developed a self-energy intelligent circuit breaker. However, the data acquisition accuracy of the circuit breaker in the prior art is poor, the degree of automation is low, and most of them need to be completed manually.

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