Reliability Assessment of Industrial Circuit Breakers with Design Enhancements

Matavalam, Amarsagar Reddy Ramapuram; Bharati, Alok Kumar

doi:10.1109/pmaps.2018.8440204

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…The reliability of circuit breakers is critical to ensure the safe operation of the power system. In order to investigate the reliability of high voltage SF 6 circuit breakers, a statistical approach is applied, which can estimate the remaining lifetime and the failure rate of circuit breakers based on the failure data [21]. T.M.…”

Section: ) Failure Analysis Of Spring Mechanismmentioning

confidence: 99%

Mechanical Condition Identification and Prediction of Spring Operating Mechanism of High Voltage Circuit Breaker

et al. 2020

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Spring operation mechanism is widely used in high voltage circuit breakers, and its reliability is related to the ability of the circuit breaker breaking fault current. During the life cycle of spring operating mechanism, stress relaxation, metal fatigue, and any other mechanical defects are easily occurring. And the mechanical performance of the circuit breaker will be influenced by the above defects. Therefore, identifying and predicting the mechanical conditions of the spring operation mechanism can improve the reliability of the circuit breaker. In the present paper, the 252 kV circuit breakers are used as test objects. Firstly, the spring stress relaxation test, the life-cycle test, and the failure simulated test of 252 kV circuit breakers are carried out. Secondly, a multi-body dynamics simulation model of the experimental prototype is established. Thirdly, support vector machine, random forest, and deep neural network are used in the condition identification of the circuit breaker to compare their performances. Then, the prediction model of spring in stress relaxation test is built, however, the model is not suitable for the life-cycle test of repeat close-open operation. Finally, the remaining useful life prediction model is proposed by using Wiener Process.

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Section: ) Failure Analysis Of Spring Mechanismmentioning

confidence: 99%

Mechanical Condition Identification and Prediction of Spring Operating Mechanism of High Voltage Circuit Breaker

et al. 2020

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“…These works mainly focus on the reliability of the protection system and the impact on the breaker performance but do not consider the impact of CB on the distribution system reliability. The relation between equipment age and maintenance with CB failure rates is explained in [9]. The authors in [10] proposed a methodology to identify the reliability life and failure probability of CB considering the subcomponent failure rates.…”

Section: Introductionmentioning

confidence: 99%