Lock-up Protection Method of DC Motor in Electric Chassis Vehicle of High Voltage Switchgear

A high-voltage switchgear and DC motor technology, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of long response time, slow action, and unsatisfactory lock-rotor fault protection, and achieve the effect of eliminating interference factors and realizing dynamic adjustment.
CN107863756BActive Publication Date: 2019-06-21XI'AN POLYTECHNIC UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI'AN POLYTECHNIC UNIVERSITY
Publication Date
2019-06-21

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Abstract

The invention discloses a high-voltage switch cabinet electric chassis truck DC motor rotation-clogging protection method, which comprises the following specific steps: 1) collecting original operation data of a DC motor as rotation-clogging characteristic quantity of the DC motor; 2) carrying out noise reduction analysis processing on the current data collected in the step 1); 3) determining a protection threshold set range; and 4) setting an actual protection value according to the threshold set range obtained in the step 3) and carrying out rotation-clogging protection. The method effectively eliminates the interference factors in the operation process and can quickly extract the rotation-clogging characteristic quantity, and realizes dynamic adjustment of the rotation-clogging protection threshold.
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Description

technical field

[0001] The invention belongs to the technical field of power distribution protection methods, and in particular relates to a blocking protection method for a DC motor in a high-voltage switch cabinet electric chassis vehicle. Background technique

[0002] Under the background of the rapid development of digital and intelligent substations, the "hand crank" method to realize the operation of entering and exiting the circuit breaker in the switch cabinet can no longer meet the actual needs. With the advancement of the smart grid, the traditional hand-cranked chassis has been gradually replaced by the electric operating mechanism. While effectively improving work efficiency, it also provides a guarantee for the rapid restoration of power supply and the personal safety of maintenance personnel.

[0003] However, due to the differences in manufacturing quality, use environment, working methods and daily maintenance of DC motors, failures of DC motors in electric c...

Claims

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