Assessing Circuit Breaker’s Electrical Contact Condition through Dynamic Resistance Signature Using Fuzzy Classifier

Mechanical Condition Monitoring of Vacuum Circuit Breakers Using Artificial Neural Network

Using the Vibration signatures obtained during the operations as the original data, a mechanical condition monitoring method for vacuum circuit breaker is developed in this paper. The method combined the time-frequency analysis and the condition recognition based on artificial neural network. During preprocessing, the vibration signature was decomposed into individual frequency bands using the ...

Integrated Preventive and Predictive Maintenance Markov Model for Circuit Breakers Equipped With Condition Monitoring

The Circuit Breaker (CB) is one of the most important equipment in power systems. CB must operate reliably to protect power systems as well as to perform tasks such as load disconnection, normal interruption, and fault current interruption. Therefore, the reliable operation of CB can affect the security and stability of power network. In this paper, effects of Condition Monitoring (CM) of CB on...

Thermally Tripped Mems Circuit Breakers

 The use of MEMS electrical switches as miniature electrically resettable circuit breakers is described. A prototype based on nickel thermal actuators on silicon has been fabricated and tested, and the performance is compared to analytical models. Trip currents of ≈ 300 mA are obtained, with trip times less than 50 ms. Temperature dependence of trip current is shown to be below 0.2%/K. The rel...

Predictive Maintenance of Circuit Breakers

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Analysis of Circuit Breakers Using Artificial Stock Market

In various stock markets, there is a system called “circuit breakers” that interrupts dealing of stocks for a certain period when stock price changes greatly. In this paper, we consider the influence of the circuit breakers on a stock market using an agent-based artificial market simulator called “U-Mart”, by controlling the period of interruption and the criterion to invoke the circuit breaker...

Automated Integration of Condition Monitoring with an Optimized Maintenance Scheduler for Circuit Breakers and Power Transformers