| 引用本文: | 束洪春,田鑫萃.基于PCA聚类方法的±800 kV直流输电线路全线速动保护[J].电力自动化设备,2016,36(1): |
| SHU Hongchun,TIAN Xincui.Entire-line instant protection based on PCA clustering for ± 800 kV HVDC transmission line[J].Electric Power Automation Equipment,2016,36(1): |
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| 摘要: |
| ：提出一种基于主成分分析（PCA）聚类的直流线路全线速动保护，其结合保护安装处测点所获取的极线电流，基于PCA聚类来判断短路故障发生的方向，如果是正向故障，则继续采用PCA聚类来甄别是正向区内还是正向区外故障。仿真结果和实测数据表明，所提保护适应于不同的高压直流输电系统，具有抗雷击干扰和抗谐波干扰的能力。 |
| 关键词: 电力系统保护 高压直流输电 故障方向 方向元件 全线速动 主成分分析 聚类 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（U1202233，51267009） |
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| Entire-line instant protection based on PCA clustering for ± 800 kV HVDC transmission line |
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SHU Hongchun,TIAN Xincui
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Faculty of Electric Power Engineering，Kunming University of Science and Technology，Kunming 650051，China
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| Abstract: |
| An entire-line instant protection based on PCA（Principal Component Analysis） clustering is proposed for DC line，which identifies the short-circuit fault direction based on PCA clustering according to the polar line current acquired by the measuring point at the installation location of protection. If the fault direction is forward，the PCA clustering is still used to detect if it is a forward in-zone or out-zone fault. Simulative results and measured data show that，the proposed protection can adapt to different HVDC systems and resist the lightening and harmonic disturbances. |
| Key words: electric power system protection HVDC power transmission fault direction directional element whole-line instant protection principal component analysis clustering |
