| 小波奇异熵在线路暂态保护和全线相继速动保护中的应用 |
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| 引用本文： | 刘青,王增平,郑振华.小波奇异熵在线路暂态保护和全线相继速动保护中的应用[J].电力系统自动化,2009,33(22):79-83. |
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| 作者姓名： | 刘青 王增平 郑振华 |
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| 作者单位： | 华北电力大学电力系统保护与动态安全监控教育部重点实验室,河北省保定市,071003 |
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| 摘 要： | 利用小波信息熵的特点,将小波熵之一的小波奇异熵用于输电线路单端暂态量保护和全线相继速动保护中,提出了基于小波奇异熵的新型输电线路单端暂态量保护和全线相继速动保护方案.PSCAD/EMTDC仿真结果证明,文中提出的利用小波奇异熵构成的单端暂态量保护判据,不受故障位置、故障类型、过渡电阻及故障时刻的影响,具有良好的适应性和灵敏性.基于小波奇异熵的相继速动判据,克服了小波模极大值判据受被分析信号幅值的影响,具有更高的灵敏度,证明了小波信息熵技术在电力系统继电保护领域具有良好的应用前景.
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| 关 键 词： | 继电保护 单端量暂态保护 相继速动 小波奇异熵 |
| 收稿时间： | 2008/11/19 0:00:00 |
| 修稿时间： | 11/6/2009 9:01:26 AM |
Application of Wavelet Singular Entropy Theory in Transient Protection and Accelerated Trip of Transmission Line Protection |
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| LIU Qing,WANG Zengping,ZHENG Zhenhua.Application of Wavelet Singular Entropy Theory in Transient Protection and Accelerated Trip of Transmission Line Protection[J].Automation of Electric Power Systems,2009,33(22):79-83. |
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| Authors: | LIU Qing WANG Zengping ZHENG Zhenhua |
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| Affiliation: | LIU Qing,WANG Zengping,ZHENG Zhenhua (Key Laboratory of Power System Protection , Dynamic Security Monitoring , Control of Ministry of Education,North China Electric Power University,Baoding 071003,China) |
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| Abstract: | Combined with the characteristic of wavelet entropy,the theory of wavelet entropy is presented in the non-unit transient protection and accelerated trip of transmission line protection. A new scheme of two applications of protection based on the concept of wavelet singular entropy is presented. The PSCAD/EMTDC simulation results show that the scheme of non-unit transient protection is insensitive to fault type,fault location,fault resistance and fault inception angle. The protection arithmetic is with favor... |
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| Keywords: | protection relay non-unit transient protection accelerated trip wavelet singular entropy |
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