基于改进Hilbert-Huang变换的交叉互联电缆在线故障定位策略研究
TM247; 为了研究交叉互联电缆系统的在线故障定位方法,建立交叉互联电缆的暂态仿真模型,研究不同模式波在交叉互联电缆系统中的传播特性,并结合该特性设计基于改进Hilbert-Huang变换的故障定位策略.结果表明:同轴模式波群具有最快的传播速度,且其在交叉互联电缆系统中的传播不受交叉连接方式的影响,可以利用双端法识别同轴模式波的到达时刻对故障进行定位;基于改进Hilbert-Huang变换及权信号强度判据对故障进行自动定位,克服了小波变换不具有自适应性的弊端,且定位精度良好.结合理论及仿真研究,在对交叉互联电缆进行在线故障定位时,建议采用双端法记录故障引起的暂态波的到达时刻,并采用改进Hil...
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Published in | 电机与控制学报 Vol. 26; no. 12; pp. 10 - 18 |
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Main Authors | , |
Format | Journal Article |
Language | Chinese |
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西安交通大学 电力设备电气绝缘国家重点实验室,陕西 西安710049
01.12.2022
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Abstract | TM247; 为了研究交叉互联电缆系统的在线故障定位方法,建立交叉互联电缆的暂态仿真模型,研究不同模式波在交叉互联电缆系统中的传播特性,并结合该特性设计基于改进Hilbert-Huang变换的故障定位策略.结果表明:同轴模式波群具有最快的传播速度,且其在交叉互联电缆系统中的传播不受交叉连接方式的影响,可以利用双端法识别同轴模式波的到达时刻对故障进行定位;基于改进Hilbert-Huang变换及权信号强度判据对故障进行自动定位,克服了小波变换不具有自适应性的弊端,且定位精度良好.结合理论及仿真研究,在对交叉互联电缆进行在线故障定位时,建议采用双端法记录故障引起的暂态波的到达时刻,并采用改进Hilbert-Huang变换对采样信号进行分析,从而实现故障的在线定位. |
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AbstractList | TM247; 为了研究交叉互联电缆系统的在线故障定位方法,建立交叉互联电缆的暂态仿真模型,研究不同模式波在交叉互联电缆系统中的传播特性,并结合该特性设计基于改进Hilbert-Huang变换的故障定位策略.结果表明:同轴模式波群具有最快的传播速度,且其在交叉互联电缆系统中的传播不受交叉连接方式的影响,可以利用双端法识别同轴模式波的到达时刻对故障进行定位;基于改进Hilbert-Huang变换及权信号强度判据对故障进行自动定位,克服了小波变换不具有自适应性的弊端,且定位精度良好.结合理论及仿真研究,在对交叉互联电缆进行在线故障定位时,建议采用双端法记录故障引起的暂态波的到达时刻,并采用改进Hilbert-Huang变换对采样信号进行分析,从而实现故障的在线定位. |
Author | 马驰 李江涛 |
AuthorAffiliation | 西安交通大学 电力设备电气绝缘国家重点实验室,陕西 西安710049 |
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Author_FL | MA Chi LI Jiang-tao |
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Keywords | 改进Hilbert-Huang变换 交叉互联电缆 同轴模式波 双端法 暂态仿真 在线故障定位 |
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Title | 基于改进Hilbert-Huang变换的交叉互联电缆在线故障定位策略研究 |
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