Research on Lifetime Evaluation of Electrolytic Capacitors Based on Factory Data and Aging Tests
The electrolytic capacitors in the instrumentation and control system of nuclear power plants have attracted much attention due to their life sensitivity.Over time,the gradual degradation of their performance parameters will have a decisive impact on the lifespan of the circuit board.Therefore,it is particularly crucial to delve deeply into their degradation laws and lifetime characteristics.This paper takes the typical electrolytic capacitors in instrumentation and control cards as the research object.Based on the baseline life data provided by the manufacturer and the service environment provided by the power plant,the capacitors are analyzed for time-limited aging and lifetime evaluation.An accelerated degradation test is designed to further verify the degradation laws and lifetime characteristics of electrolytic capacitors.Through the combination of baseline lifetime analysis and experimental verification,this paper provides a basis for determining the replacement cycle of capacitors in nuclear power plant cards,thereby ensuring the reliability and economy of the operation and maintenance of the instrumentation and control system in nuclear power plants.
nuclear power plantelectrolytic capacitorperformance parametersaccelerated degradationlifetime evaluation
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