杜林;严涵;吴学光;谭亚雄;常莎;欧阳文敏;

• 1:输配电装备及系统安全与新技术国家重点实验室(重庆大学)
• 2:全球能源互联网研究院有限公司

摘要(Abstract)：

混合式高压直流断路器融合了机械开关、半导体器件、避雷器等多种组件,组件状态与断路器的开断可靠性密切相关。通过分析混合式高压直流断路器的暂态参量时序及故障电气特性,建立了级联全桥型混合式高压直流断路器的开断仿真模型,分析了断路器内部控制信号异常、避雷器劣化及绝缘栅双极型晶体管(insulated gate bipolar transistor,IGBT)衰老退化等3种类型组件故障状态与暂态电气参量的关系,提取了各模块及支路间的电压比值K_u、K_(u0)、电流比值K_i、K_t、避雷器吸能比K_Q及电流延迟时长σ_i、电压延迟时长σ_u等作为反映不同故障或缺陷的电气特征参量,并总结了不同故障状态对于断路器内部均压、均流、吸能特性的影响情况。结果表明,对于不同类型的组件故障,故障特征参量有较大的差异,可以体现内部组件及支路的均压、均流特征,反映不同组件故障状态特性。

关键词(KeyWords)： 混合式直流断路器;内部组件状态;全时序参量;暂态特性;故障特征分析

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2017YFB0902400);; 中央高校基本科研业务费项目(2018CDPTCG0001/31)~~

作者(Author): 杜林;严涵;吴学光;谭亚雄;常莎;欧阳文敏;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.0903

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