| 引用本文: | 陈磊,唐跃进,陈楠,宋萌,石晶,程时杰.空心超导变压器参数设计对可控阻抗型限流器性能的影响[J].电力自动化设备,2009,(6): |
| .Influence of air-core superconducting transformer parameters on performances of controllable impedance type fault current limiter[J].Electric Power Automation Equipment,2009,(6): |
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| 摘要: |
| 介绍了可控阻抗型超导限流器的电路结构和工作原理,该限流器由空心超导变压器及PWM变流器组成.故障发生后,通过变流器控制变压器二次侧注入电流的相位和幅值,进而调节限流器的等效阻抗,从而实现抑制短路电流的目的.针对空心超导变压器参数设计对限流器工作性能的影响,以初始补偿电流、不同工作模式下的限流阻抗以及变流器的功率传输为指标,进行了理论研究;以该型限流器在一个三相接地系统的应用为例,利用Matlab建立仿真模型,分析了不同变压器参数下限流器工作性能的差别.仿真结果与理论分析相符,得出如下结论:增大变压器一次侧自感有利于加强限流能力;增加变比会导致初始补偿电流的上升;提高耦合系数有助于降低变流器的无功功率输出. |
| 关键词: 可控阻抗型超导限流器 空心超导变压器 参数设计 变比 耦合系数 功率传输 |
| DOI： |
| 分类号:TM56 |
| 基金项目:国家高技术研究发展计划(863计划)? |
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| Influence of air-core superconducting transformer parameters on performances of controllable impedance type fault current limiter |
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CHEN Lei TANG Yuejin CHEN Nan SONG Meng SHI Jing CHENG Shijie
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| Abstract: |
| The structure and operation principle of controllable impedance - type SFCL (Superconducting Fault Current Limiter) are introduced,which is composed of an air - core superconducting transformer and a PWM converter. In the case of short - circuit,the output current amplitude and phase of PWM converter are controlled to adjust the equivalent impedance of current - limiter for fault current suppression. To study the influence of air-core superconducting transformer parameters on the performances of SFCL,theore... |
| Key words: controllable impedance type superconducting fault current limiter air - core superconducting transformer parameter design transformation ratio coupling coefficient power transmission |
