| 基于后向预测Prony算法的超高压输电线路暂态量保护方案 |
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| 引用本文： | 杨明玉,杨玉坤.基于后向预测Prony算法的超高压输电线路暂态量保护方案[J].电力自动化设备,2011,31(5):28-33. |
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| 作者姓名： | 杨明玉 杨玉坤 |
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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,保定,071003 |
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| 摘 要： | 提出了一种基于故障后暂态电流信号的保护方案,利用运算法详细推导了分布参数下超高压输电线路各种故障类型时电流暂态信号的成分,分析结果表明故障后的暂态信号包含谐波形式的高频分量,其频率和相位特征能够可靠区分区内、外故障和各种故障类型.使用后向预测Prony算法作为提取暂态电流特征的工具,并对方程组的求解使用QR分解以缩短算...
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| 关 键 词： | 超高压输电线路 后向预测Prony算法 暂态量保护 故障选相 |
EHV power transmission line transient-based protection with backward Prony algorithm |
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| YANG Mingyu and YANG Yukun.EHV power transmission line transient-based protection with backward Prony algorithm[J].Electric Power Automation Equipment,2011,31(5):28-33. |
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| Authors: | YANG Mingyu and YANG Yukun |
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| Affiliation: | YANG Mingyu,YANG Yukun(Key Laboratory of Power System Protection Dynamic Security Monitoring and Control under Ministry of Education,North China Electric Power University,Baoding 071003,China) |
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| Abstract: | A protection scheme based on fault transient current signals is presented.The components of fault transient current are analyzed with the operation method for EHV power transmission line with distributed parameters,which show that the frequency and phase of its high-frequency harmonic components can be applied to distinguish various fault types,including internal and external faults.The backward Prony algorithm is employed to extract the transients and the QR decomposition to simplify the computation.The co... |
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| Keywords: | EHV power transmission line backward Prony algorithm transient-based protection faulty phase selection |
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