舒胜文;阮江军;黄道春;吴高波;刘畅;

• 1:武汉大学电气工程学院
• 2:福州电业局

摘要(Abstract)：

瞬态恢复电压(transient recovery voltage,TRV)均匀分配是双断口真空断路器安全可靠运行必须解决的关键问题。从双断口真空断路器的暂态等值电路出发,建立了描述其TRV分配特性的数学模型,揭示了杂散电容和弧后等离子体特性差异是导致双断口真空断路器TRV分配不均匀的2个主要因素。基于真空电弧模型,仿真验证了双断口真空断路器TRV分配数学模型的有效性。不同均压电容下双断口真空断路器TRV分配特性的仿真和试验结果均表明:均压电容能有效提高TRV分配的均匀性;然而,过大的均压电容会显著提高重燃电流的幅值和持续时间,不利于双断口真空断路器的成功开断,即表现出负效应。因此,均压电容取值不宜过大,能保证TRV分配比较均匀即可。

关键词(KeyWords)： 双断口真空断路器;瞬态恢复电压分配;杂散电容;弧后等离子体特性差异;真空电弧模型;均压电容

Abstract:

Keywords:

基金项目(Foundation): “十一五”国家科技支撑计划重大项目(2009BAA19B05)~~

作者(Author): 舒胜文;阮江军;黄道春;吴高波;刘畅;

Email:

DOI: 10.13335/j.1000-3673.pst.2012.11.018

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