| 引用本文: | 朱雯清,赵西贝,熊岩,周月宾,赵成勇.异构型换流器的多任务剖面可靠性分析方法[J].电力自动化设备,2024,44(4):88-95 |
| ZHU Wenqing,ZHAO Xibei,XIONG Yan,ZHOU Yuebin,ZHAO Chengyong.Multi-mission profile reliability analysis method for heterogeneous converter[J].Electric Power Automation Equipment,2024,44(4):88-95 |
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| 摘要: |
| 现有关于模块化多电平换流器(MMC)可靠性分析的研究大多针对子模块结构独立的换流器，对于多种低成本、多模态的异构拓扑，尚缺乏有效的可靠性分析方法，因此针对异构型换流器的可靠性分析对扩展其应用边界有重要的意义。总结了异构型MMC的特征，以桥臂嵌套型MMC为例，提出了一种考虑桥臂切换导致的多任务剖面与工作故障延续性且适用于异构型MMC的可靠性建模方法。通过分析换流器的不同运行状态，建立了马尔可夫模型，并分析了其冗余配置方案。基于仿真算例计算了桥臂嵌套型MMC的可靠性，分析了子模块冗余配置对其可靠性的影响，并与传统模型进行对比，验证了所提方法可为多开关状态的异构型MMC的可靠性分析及冗余配置提供策略参考。 |
| 关键词: 模块化多电平换流器 可靠性分析 马尔可夫模型 多任务剖面 |
| DOI：10.16081/j.epae.202308030 |
| 分类号:TM46 |
| 基金项目:直流输电技术全国重点实验室开放基金资助项目(SKLHVDC-2022-KF-05) |
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| Multi-mission profile reliability analysis method for heterogeneous converter |
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ZHU Wenqing1, ZHAO Xibei1, XIONG Yan2, ZHOU Yuebin2, ZHAO Chengyong1
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1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;2.State Key Laboratory of HVDC, Electric Power Research Institute of China Southern Power Grid, Guangzhou 510663, China
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| Abstract: |
| Most existing studies on the reliability analysis of modular multi-level converter(MMC) focus on the converters with independent sub-module structures. However, there is still a lack of effective reliability analysis methods for heterogeneous topologies with low-cost and multi-mode. Therefore, the reliability analysis of heterogeneous converter is of great significance to extend its application boundary. The characteristics of heterogeneous MMC are summarized. Taking the embedded full-bridge MMC(EFB-MMC) as an example, a reliability modeling method suitable for heterogeneous MMC is proposed, which considers the multi-mission profile and the continuity of working state failure caused by bridge switching. By analyzing the different operating states of the converter, the Markov model is established and its redundancy configuration scheme is analyzed. Based on the simulation example, the reliability of EFB-MMC is calculated, and the influence of the redundant configuration of sub-modules on its reliability is analyzed. Compared with the traditional models, it is verified that the proposed method can provide a strategic reference for the reliability analysis and redundancy configuration of the heterogeneous MMC with multi-switch state. |
| Key words: modular multi-level converter reliability analysis Markov model multi-mission profile |
