| HHT在110kV线路故障保护跳闸方式识别中的应用 |
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| 引用本文： | 周 秀,王大才. HHT在110kV线路故障保护跳闸方式识别中的应用[J]. 防灾减灾工程学报, 2014, 0(2): 20-23 |
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| 作者姓名： | 周 秀 王大才 |
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| 作者单位： | 宁夏电力公司电力科学研究院, 宁夏 银川 750011;中国大唐集团海外投资有限公司, 北京 100053 |
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| 摘 要： | 通过仿真某 110 kV 线路接地故障,利用希尔伯特-黄变换(Hilbert-Huang Transform, HHT)分析了甲站、乙站单相跳闸以及甲站三相跳闸三种可能引起的保护跳闸方式下甲站 1 号变压器末屏 A 相电压与电流的波形特征,并分解计算了信号分解重构下低频与高频部分的能量函数值。计算结果表明:HHT 所得到的能量函数能较好地识别线路故障引起站内保护跳闸的方式。
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| 关 键 词： | 110 kV 线路； 希尔伯特-黄变换(HHT)； 跳闸识别 |
Application of the protection tripping mode identifying with HHT in 110 kV power line fault |
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| ZHOU Xiu,WANG Dacai. Application of the protection tripping mode identifying with HHT in 110 kV power line fault[J]. Journal of Disaster Prevention and Mitigation Engineering, 2014, 0(2): 20-23 |
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| Authors: | ZHOU Xiu WANG Dacai |
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| Affiliation: | Electric Power Research Institute of State Grid Ningxia Power Co.,Yinchuan, 750001; China Datang Group Overseas Investment Ltd. Co.,Beijing , 100053 |
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| Abstract: | Based on the simulation 110 kV power line grounding fault,using HHT(Hilbert-HuangTransform)analyzes the waveform features of A phase voltage and current at the end screen of No.1transformer in A station under three kinds of protection tripping ways caused by single -phasetripping in A station or B station and three-phase tripping in A station,and calculates the energyfunction values of low and high frequency parts under the signal decomposition reconstruction. Thecalculation result shows that the energy function obtained by HHT can well identify substationinternal protection tripping ways caused by power line faults. |
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