Motor fault diagnosis and protection control system

Abstract

The invention discloses a motor fault diagnosis and protection control system. The system comprises a remote terminal which is in communication connection with near-field equipment; the near-field equipment comprises a data acquisition unit, an A/D sampling unit and an execution circuit breaker; the remote terminal comprises an analysis unit; the data acquisition unit is used for acquiring working condition signals of the motor; the A/D sampling unit is used for converting each working condition signal into a corresponding digital working condition signal; the analysis unit is used for generating alarm information and/or a control instruction according to a preset rule by taking the digital working condition signal as a parameter, and generating a corresponding fault report according to the digital working condition signal when the alarm information and/or the control instruction are/is generated; the execution circuit breaker is used for controlling on-off of a power supply of the motor according to the control instruction. According to the invention, the integrated design of state monitoring, fault diagnosis and protection control of the motor is realized, the precision of fault diagnosis and protection control of the motor can be effectively improved, and the comprehensive cost of fault diagnosis and protection control is reduced.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to a motor fault diagnosis and protection control system. Background technique [0002] The electric motors in the production enterprises will include some large electric motors with a capacity of 2MW and above at 6kV and above. Such electric motors are usually responsible for important technological production processes, and their safety and reliability are very important. Since this type of motor is often exposed to harsh environments such as high temperature, high pressure, and strong corrosion for a long time, it requires not only accurate condition monitoring and fault diagnosis devices, but also precise protection and control devices to meet the needs of safe production. [0003] In the prior art, there are two independent sets of equipment for fault detection and protection control of large motors, that is, fault diagnosis equipment and protection control equipment need to...

AI Technical Summary

Problems solved by technology

[0004] The inventor found through research that this technical solution in the prior art not only has a high overall cost, but also has an unsatisfactory effect of fault detection and protection control

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