电阻型高温超导限流器暂态电阻特性分析
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关键词：高温超导故障限流器 限流电阻 短路电流 暂态仿真 温度特性 电特性 中图分类号：TM26
Analysis of Transient Resistance Characteristics for Resistive Type High Temperature Superconducting Fault Current Limiter
2018 年 5 月 第 33 卷第 9 期
电工技术学报
TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY
DOI：10.19595/j.cnki.1000-6753.tces.170310
Vol.33 No. 9 May 2018
电阻型高温超导限流器暂态电阻特性分析
Gong Jun1 Zhu Jiahui2 Fang Jin1 Chen Panpan2 Qiu Ming2 （1. School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China
2. China Electric Power Research Institute Beijing 100192 China）
Abstract Providing an effective guarantee for power transmission quality and stability in power system, high temperature superconducting fault current limiter (SFCL) is an effective device to solve the problem of short circuit fault in power girds, due to the superior properties of self-triggered, high current limiting ability and low normal operation loss. In this paper, a mathematical model for the dependence of transient resistance of resistive type superconducting current limiting unit (SCLU) on its transport current and ambient temperature is built, by analyzing the electrical and thermal properties of YBCO superconductor. In order to investigate the law of the current limiting ability of SFCL with suffering fault current in the power grid, PSCAD/EMTDC and Matlab have been combined to simulate this behavior. PSCAD/EMTDC is used for line modeling and short circuit fault operation simulation and Matlab is used to build the superconducting equivalent mathematic model. According to the analysis of numerical transient simulation, current-limiting ratio in high temperature SFCL, resistance variation characteristic in SCLU and temperature variation characteristic in SCLU are obtained, under the condition of single-phase shortcircuit fault and three-phase short-circuit fault , respectively. Moreover, for verifying the law of resistance variation, the superconducting tape is subjected to the impact current test. Calculation and analysis results
wk.baidu.com
龚 珺 1 诸嘉慧 2 方 进 1 陈盼盼 2 丘 明 2
（1. 北京交通大学电气工程学院 北京 100044 2. 中国电力科学研究院 北京 100192）
摘要 高温超导故障限流器（SFCL）因集自触发、限流、损耗较小等优点已成为解决目前电 网短路故障问题的有效设备，为电力系统中电能的传输质量和稳定性提供了有效保障。该文通过 对 YBCO 超导材料电、热性能的分析，建立电阻型超导限流单元瞬态电阻与其通过的电流和所在 环境温度变化规律的数学模型。应用电力系统电磁暂态仿真软件 PSCAD/EMTDC 进行线路建模和 短路故障运行状态模拟，并联合采用 Matlab 构建等效数学模型。通过数值暂态联合仿真分析，获 得单相短路故障情况下与三相短路故障情况下超导故障限流器的限流比率及超导限流单元的电阻 和温度变化特征。并对超导带材进行冲击电流试验，验证其电阻变化规律。计算和分析结果表明， 在不同强度的短路电流冲击下，高温超导故障限流器产生的瞬态电阻受短路电流幅值和变化率影 响较大。阻值变化的速率随短路电流变化速率的增大而增大，因此对于不同程度短路电流需采取 不同的限流保护策略。该研究对超导限流器距离保护的研究提供了时间维度的参考，对掌握各种 复杂拓扑类型高温超导限流器限流特性具有参考意义。
Analysis of Transient Resistance Characteristics for Resistive Type High Temperature Superconducting Fault Current Limiter
2018 年 5 月 第 33 卷第 9 期
电工技术学报
TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY
DOI：10.19595/j.cnki.1000-6753.tces.170310
Vol.33 No. 9 May 2018
电阻型高温超导限流器暂态电阻特性分析
Gong Jun1 Zhu Jiahui2 Fang Jin1 Chen Panpan2 Qiu Ming2 （1. School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China
2. China Electric Power Research Institute Beijing 100192 China）
Abstract Providing an effective guarantee for power transmission quality and stability in power system, high temperature superconducting fault current limiter (SFCL) is an effective device to solve the problem of short circuit fault in power girds, due to the superior properties of self-triggered, high current limiting ability and low normal operation loss. In this paper, a mathematical model for the dependence of transient resistance of resistive type superconducting current limiting unit (SCLU) on its transport current and ambient temperature is built, by analyzing the electrical and thermal properties of YBCO superconductor. In order to investigate the law of the current limiting ability of SFCL with suffering fault current in the power grid, PSCAD/EMTDC and Matlab have been combined to simulate this behavior. PSCAD/EMTDC is used for line modeling and short circuit fault operation simulation and Matlab is used to build the superconducting equivalent mathematic model. According to the analysis of numerical transient simulation, current-limiting ratio in high temperature SFCL, resistance variation characteristic in SCLU and temperature variation characteristic in SCLU are obtained, under the condition of single-phase shortcircuit fault and three-phase short-circuit fault , respectively. Moreover, for verifying the law of resistance variation, the superconducting tape is subjected to the impact current test. Calculation and analysis results
wk.baidu.com
龚 珺 1 诸嘉慧 2 方 进 1 陈盼盼 2 丘 明 2
（1. 北京交通大学电气工程学院 北京 100044 2. 中国电力科学研究院 北京 100192）
摘要 高温超导故障限流器（SFCL）因集自触发、限流、损耗较小等优点已成为解决目前电 网短路故障问题的有效设备，为电力系统中电能的传输质量和稳定性提供了有效保障。该文通过 对 YBCO 超导材料电、热性能的分析，建立电阻型超导限流单元瞬态电阻与其通过的电流和所在 环境温度变化规律的数学模型。应用电力系统电磁暂态仿真软件 PSCAD/EMTDC 进行线路建模和 短路故障运行状态模拟，并联合采用 Matlab 构建等效数学模型。通过数值暂态联合仿真分析，获 得单相短路故障情况下与三相短路故障情况下超导故障限流器的限流比率及超导限流单元的电阻 和温度变化特征。并对超导带材进行冲击电流试验，验证其电阻变化规律。计算和分析结果表明， 在不同强度的短路电流冲击下，高温超导故障限流器产生的瞬态电阻受短路电流幅值和变化率影 响较大。阻值变化的速率随短路电流变化速率的增大而增大，因此对于不同程度短路电流需采取 不同的限流保护策略。该研究对超导限流器距离保护的研究提供了时间维度的参考，对掌握各种 复杂拓扑类型高温超导限流器限流特性具有参考意义。