Operational Reliability Assessment of Power Electronic Transformer Considering Operating Conditions and Fatigue Accumulation

Wan, Yuxiang; Cheng, Lin; Liu, Manjun

doi:10.1109/pmaps47429.2020.9183490

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Recently, Wan et al [154] proposed an operational reliability model for the power electronic components based on modular multi-level converters, where the effects of the fatigue accumulation and short-term operating conditions of IGBT modules were considered. The contributions of different time-scale junction temperature variations on the IGBT module failure rate were analyzed based on IGBT failure mechanisms and reliability guidelines.…”

Section: Fatigue Reliability On Power Electronic Componentsmentioning

confidence: 99%

Fatigue reliability of wind turbines: historical perspectives, recent developments and future prospects

et al. 2022

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Section: Fatigue Reliability On Power Electronic Componentsmentioning

confidence: 99%

Fatigue reliability of wind turbines: historical perspectives, recent developments and future prospects

et al. 2022

View full text Add to dashboard Cite

“…This paper focuses on the battery degradation process and the level of system reliability after grouping. The operational reliability analysis of power electronic equipment is provided in a previous paper [36].…”

Section: A Capacity Probabilistic Modeling and Reliability Evaluationmentioning

confidence: 99%

Operational Reliability Modeling and Assessment of Battery Energy Storage Based on Lithium-ion Battery Lifetime Degradation

Cheng

Wan

Zhou

et al. 2022

Journal of Modern Power Systems and Clean Energy

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Battery energy storage (BES) systems can effectively meet the diversified needs of power system dispatching and assist in renewable energy integration. The reliability of energy storage is essential to ensure the operational safety of the power grid. However, BES systems are composed of battery cells. This suggests that BES performance depends not only on the configuration but also on the operating state over different lifetime durations. The lack of safety and reliability is the main bottleneck preventing widespread applications of BES systems. Therefore, a reliability assessment algorithm and a weak-link analytical method for BES systems are proposed while considering battery lifetime degradation. Firstly, a novel lithium-ion battery model is proposed to identify the degradation rate of solid electrolyte interphase film formation and capacity plummeting. The impacts of different operating conditions are considered in stress factor models. Then, a reliability assessment algorithm for a BES system is introduced based on a universal generating function. An innovative weak-link analytical method based on the reliability importance index is proposed that combines the evaluation results of state-oriented and state-change-oriented indexes through an entropy weight method. The model, algorithm, indexes, and the usefulness are demonstrated in case studies based on aging test data and actual bus operating data. The results demonstrate the effects of the battery status and working conditions on BES reliability. Weak-link analysis is also used to assist BES systems in avoiding short-board batteries to achieve long lifetimes and efficient operation.

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Operational Reliability Assessment of Power Electronic Transformer Considering Operating Conditions and Fatigue Accumulation

Cited by 2 publications

References 11 publications

Fatigue reliability of wind turbines: historical perspectives, recent developments and future prospects

Fatigue reliability of wind turbines: historical perspectives, recent developments and future prospects

Operational Reliability Modeling and Assessment of Battery Energy Storage Based on Lithium-ion Battery Lifetime Degradation

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