A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy
A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy
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基于小波能量相对熵的高压直流输电线路先导定向保护
DOI：
10.3390/e17085257
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发表时间：
2015-07
期刊：
影响因子：
2.7
通讯作者：
Deng Yujia
中科院分区：
文献类型：
--
作者：
Lin Sheng;Gao Shan;He Zhengyou;Deng Yujia
在分析高压直流输电系统及其故障叠加回路的基础上，证明了输电线路一端电压和电流的故障分量在内部故障和外部故障情况下的方向是不同的。相对熵作为两个信号之间差异的估计，是识别高压直流输电线路暂态信号的有效参数。本文利用小波能量的相对熵来区分内部故障和外部故障。对于内部故障，电压和电流故障分量在线路两端方向相反，说明小波能量相对熵差异较大;对于外部故障，方向相同，说明差异较小。基于PSCAD/EMTDC的仿真结果表明，所提出的纵联保护系统在不同故障条件下均能准确动作，且动作性能不受故障类型、故障位置、故障电阻和噪声的影响。
On the basis of analyzing high-voltage direct current (HVDC) transmission system and its fault superimposed circuit, the direction of the fault components of the voltage and the current measured at one end of transmission line is certified to be different for internal faults and external faults. As an estimate of the differences between two signals, relative entropy is an effective parameter for recognizing transient signals in HVDC transmission lines. In this paper, the relative entropy of wavelet energy is applied to distinguish internal fault from external fault. For internal faults, the directions of fault components of voltage and current are opposite at the two ends of the transmission line, indicating a huge difference of wavelet energy relative entropy; for external faults, the directions are identical, indicating a small difference. The simulation results based on PSCAD/EMTDC show that the proposed pilot protection system acts accurately for faults under different conditions, and its performance is not affected by fault type, fault location, fault resistance and noise.
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影响因子：
2.5
作者：
Dubey, Rahul;Samantaray, Subhransu Ranjan
通讯作者：
Samantaray, Subhransu Ranjan
DOI：
10.1109/pesgm.2018.8586307
发表时间：
2018-08
期刊：
2018 IEEE Power & Energy Society General Meeting (PESGM)
影响因子：
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作者：
G. Song;X. Chu;Shuping Gao;X. Kang;Z. Jiao
通讯作者：
G. Song;X. Chu;Shuping Gao;X. Kang;Z. Jiao
DOI：
10.1109/powercon.2014.6993931
发表时间：
2014-12
期刊：
2014 International Conference on Power System Technology
影响因子：
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作者：
Jian Liu;C. Fan;N. Tai
通讯作者：
Jian Liu;C. Fan;N. Tai
DOI：
10.1109/demped.2013.6645767
发表时间：
2013-10
期刊：
2013 9th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives (SDEMPED)
影响因子：
--
作者：
H. L. Schmitt;L. R. B. Silva;P. Scalassara;A. Goedtel
通讯作者：
H. L. Schmitt;L. R. B. Silva;P. Scalassara;A. Goedtel
DOI：
10.1109/pes.2009.5275613
发表时间：
2009-07
期刊：
2009 IEEE Power & Energy Society General Meeting
影响因子：
--
作者：
Liu Qing;Wang Zengzing
通讯作者：
Liu Qing;Wang Zengzing