Abstract
In order to assure the stability of power system and meet the development requirements of electrical equipment technology, a set of action characteristic monitoring system for permanent magnetic vacuum circuit breaker based on CAN communication technology is developed. The system contains three parts: high-precision sensor group, DSP monitoring subsystem and signal isolation conversion unit. The core of the system is DSP monitoring subsystem, which collecting the curves of contact travel and time of the high precision sensor group, and feedback to the monitoring host through the CAN communication interface. The monitoring system not only realizes centralized management of multiple distributed permanent magnet vacuum circuit breakers, but also provides a large number of dynamic information for state assessment and fault diagnosis of vacuum circuit breakers.
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