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| 摘要: |
| 研究了和应涌流造成电流互感器暂态饱和情况下,经电流互感器传变后和应涌流的二次谐波舍量与间断角的变化.推导了和应涌流的二次谐波含量计算公式;分析电流互感器暂态饱和后传变工频分量与二次谐波分量的特性,从而计算经电流互感器传变后和应涌流的二次谐波含量,并分析电流互感器暂态饱和对和应涌流间断角的影响.研究表明,相同涌流时间宽度的励磁涌流与和应涌流具有相同的二次谐波含量,和应涌流本身并不是引起差动保护误动的原因;当电流互感器饱和时,其传变高次谐波的能力比传变低次谐波的能力强,即经饱和电流互感器传变的和应涌流,二次谐波含量将升高;经饱和电流互感器传变的和应涌流间断角将减小,并且电流互感器饱和越严重,间断角减小得越多. |
| 关键词: 电流互感器暂态饱和 和应涌流 二次谐波 间断角 |
| DOI： |
| 分类号:TM452 |
| 基金项目:国家自然科学基金，云南省科技攻关项目，云南省自然科学基金，昆明理工大学青年基金青年基金? |
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| Effect of CT transient saturation on transfer of sympathetic inrush |
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SUN Xiangfei~1 SHU Hongchun~ YU Jilai~1
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| Abstract: |
| Second harmonic proportion and dead-angle of sympathetic inrush transferred by transiently satu- rated CT(Current Transformer) are investigated.The formula for calculating the second harmonic propor- tion of sympathetic inrush is derived,the transfer characteristics of saturated CT for each harmonic are ana- lyzed,and the second harmonic proportion of sympathetic inrush transferred by transiently saturated CT is calculated.The influence of CT saturation on dead-angle is studied.The results indicate that,as ... |
| Key words: CT transient saturation sympathetic inrush second harmonic dead-angle |
