Motor detection method and device

Abstract

The invention discloses a motor detection method and device. A motor is used for driving a circuit breaker, a motor rotating shaft is connected with the circuit breaker through a brake disc, the method comprises the steps that an actual movement curve of the motor rotating shaft is detected, and the movement curve is a curve that the rotating angle of the motor rotating shaft changes along with time; comparing the actual movement curve with a preset movement curve; if the angle difference value of the actual movement curve and the preset movement curve at any moment is smaller than the presetangle value corresponding to the moment, judging that the working state of the motor is normal; If the angle difference value of the actual movement curve and the preset movement curve at any moment is greater than or equal to the preset angle value corresponding to the moment, judging that the working state of the motor is abnormal. By obtaining the actual movement curve of the motor rotating shaft and comparing the actual movement curve with the preset movement curve, whether the working state of the motor is normal or not is judged, the intelligent level and reliability of the high-voltageswitchgear are improved, conversion from periodic maintenance to state maintenance is achieved, and the overhaul cost is saved.

Description

technical field [0001] The invention relates to the technical field of motor detection, in particular to a motor detection method and device. Background technique [0002] The current high-speed development of smart grid (Smart Grid) requires high-voltage switchgear to be intelligent. That is, through the monitoring of key parameters such as mechanical status, electrical status and control status, comprehensively evaluate equipment operation reliability, control reliability and load capacity, and realize the transformation of high-voltage switchgear maintenance from "regular maintenance" to "condition maintenance", thereby improving Reliable operation, save maintenance costs, and bring huge technical and economic benefits to enterprises and society. [0003] Motor direct drive circuit breaker technology is to connect the motor directly with the high voltage circuit breaker, and control the opening and closing operation of the moving contact of the circuit breaker. Compared...

AI Technical Summary

Problems solved by technology

Compared with traditional circuit breaker products, the existing motor direct drive circuit breaker products have greatly reduced the manual maintenance cycle and cost, but still cannot realize the self-inspection of the drive motor, which does not meet the development requirements of the smart grid. The reason is that the drive motor The self-test technology is not yet perfect, and the periodic function test of the drive motor cannot be carried out

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