| TLS-ESPRIT与稳定图法相结合的区间低频振荡模态参数提取 |
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| 引用本文： | 于兴林,李慧敏,贾艳. TLS-ESPRIT与稳定图法相结合的区间低频振荡模态参数提取[J]. 吉林电力, 2011, 39(6): 21-23,36 |
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| 作者姓名： | 于兴林 李慧敏 贾艳 |
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| 作者单位： | 1. 东北电力大学,吉林吉林,132012
2. 吉林省电力有限公司培训中心,长春,130062 |
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| 摘 要： | 提出了基于总体最小二乘法-旋转矢量不变技术(TLS-ESPRIT)与稳定图法相结合的区间低频振荡模态参数的提取方法.首先用TLS-ESPRIT结合稳定图确定区间低频振荡信号的阶数,然后用TLS-ESPRIT算法直接对原始含噪信号精确地估计出主导振荡模态的频率和阻尼比.仿真结果表明,该方法抗噪能力强、估计精度高,克服了T...
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| 关 键 词： | 总体最小二乘法-旋转矢量不变技术 稳定图 区间低频振荡 信噪比 |
TLS-ESPRIT Combined with Stabilization Diagram for Extracting the Model Parameters of Range Low Frequency Oscillations |
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| Abstract: | A method based on TLS-ESPRIT combined with stabilization diagram has been introduced to extract the model parameters of range low frequency oscillation（RLFO）.First,it applies TLS-ESPRIT combined with stabilization diagram to estimate the signal＇s order of RLFO.And then the frequency and damping ratio of the led model of RLFO in the original noisy signal can be accurately estimated by TLS-ESPRIT.The results of simulation show that the method has strong anti-noise ability,high-accuracy and overcome the problem of deciding the order in the method of TLS-ESPRIT.Example analysis further verifies the feasibility and validity of the method proposed in this paper. |
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| Keywords: | TLS-ESPRIT stabilization diagram range low frequency oscillation signal-to-noise |
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