| 引用本文: | 韦德福,王飞鸣,诸嘉慧,刘一涛,刘超群,刘钧迪.10 kV磁偏置超导限流器限流阻抗特性实验研究[J].电力自动化设备,2022,42(11): |
| WEI Defu,WANG Feiming,ZHU Jiahui,LIU Yitao,LIU Chaoqun,LIU Jundi.Experimental study on impedance characteristics of 10 kV magnetic biased superconducting current limiter[J].Electric Power Automation Equipment,2022,42(11): |
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| 摘要: |
| 结合系统运行工况，建立10 kV电网短路限流暂态过程数学模型，分析不同阶段的限流机理，给出磁偏置超导限流器阻抗特性变化趋势。搭建10 kV系统磁偏置超导限流器阻抗特性试验电路，测量不同限流工况下的电流波形，获得磁偏置超导限流器阻抗特性的等效方程和变化规律曲线。研究结果表明：稳定运行阶段，磁偏置超导限流器的等效阻抗为0.13 Ω；初始限流阶段，在设置的工况1、2下磁偏置超导限流器的电流峰值限流率分别为13.18 % 和8.98 %；稳态限流阶段，磁偏置超导限流器的等效阻抗为1.667 Ω，在设置的工况1、2下其电流峰值限流率分别为16.23 % 和14.13 %。给出限流器初始限流阶段阻抗特性数学方程。 |
| 关键词: 磁偏置 超导限流器 阻抗特性 限流率 数学模型 |
| DOI：10.16081/j.epae.202205031 |
| 分类号:TM471 |
| 基金项目:国家电网有限公司科技项目(磁偏置超导故障限流器电网运行技术研究) |
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| Experimental study on impedance characteristics of 10 kV magnetic biased superconducting current limiter |
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WEI Defu1, WANG Feiming1, ZHU Jiahui2, LIU Yitao1, LIU Chaoqun2, LIU Jundi1
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1.Electric Power Research Institute of State Grid Liaoning Electric Power Supply Co.,Ltd.,Shenyang 110006, China;2.China Electric Power Research Institute, Beijing 100192, China
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| Abstract: |
| The mathematical model of current limiting process for 10 kV grid is established in combination with the system operating conditions. The current limiting mechanism in different stages is analyzed and the changing trend of impedance characteristics of magnetic biased superconducting current limiter is obtained. The impedance characteristics operation test circuit of 10 kV magnetic biased superconducting current limiter is constructed, based on which, the current waveforms under different current limiting conditions are measured, and the equivalent equation and the variation curve of impedance characteristics of magnetic biased superconducting current limiter are obtained. The study results show that, in stable operation stage, the equivalent impedance of the current limiter is 0.13 Ω,the limiting rate of the current peak under the setting Condition 1 and 2 are 13.1% and 8.98 % respectively in initial current limiting stage; in steady current limiting stage, the equivalent impedance of the current limiter is 1.667 Ω,and the limiting rate of the current peak under the setting Condition 1 and 2 are 16.23 % and 14.13 % respectively. The mathematical equation of the impedance characteristics of the current limiter in initial current limiting stage is given. |
| Key words: magnetic biased superconducting current limiter impedance characteristics current limiting rate mathematical model |
