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高速直流断路器用磁脱扣器调节特性研究

DOI: 10.13336/j.1003-6520.hve.2015.09.043, PP. 3130-3135

Keywords: 调节特性,线性度,脱扣电流,脱扣时间,可调节式脱扣器,高速直流断路器

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Abstract:

可调节式脱扣器是断路器系列化产品的重要组成部分,调节特性是评价断路器调节能力的主要依据,也是设计可调节式脱扣器的关键因素。为此以高速直流断路器用磁脱扣器为例,首先计算脱扣器的静态特性和动态特性,获得脱扣器的调节特性曲线,并引入Pearson相关系数定量计算调节特性曲线的线性度。最后从脱扣器的调节范围、调节线性度、调节分度值、易操作性和调节方法复杂度,多个角度评估脱扣器的调节特性,为选择和优化脱扣器的调节方案提供基础依据。结果表明预设铁核位移(dc),继而连续调节弹簧预压缩量(L0)的调节方案具有方法简单、调节范围大、线性度高的特点,适用于大范围调节脱扣电流的场合;预设L0,继而连续调节dc的方案具有调节分度值低、调节反力小的特点,通过搭配非线性刻度,减小调节误差,可用于微型电机自动调节或调节精度要求较高的场合。

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