| Prony算法在电力系统暂态信号分析中的应用 |
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| 引用本文： | 赵成勇,刘娟. Prony算法在电力系统暂态信号分析中的应用[J]. 电力系统及其自动化学报, 2008, 20(2): 60-64 |
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| 作者姓名： | 赵成勇 刘娟 |
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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,保定,071003 |
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| 基金项目： | 教育部长江学者和创新团队发展计划 |
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| 摘 要： | 电力系统暂态信号成分的准确识别是电力系统动态过程分析的基础.文中分析了Prony算法中采样频率、采样点数等参数的选择方法,尤其是提出了根据动态变化率DVR＜1%和信噪比SNR＞40 dB来选择模型阶数的方法.通过对模拟同步发电机空载突然三相短路故障的分析,验证了阶数选择方法的有效性和准确性.将Prony算法及阶数选择方法应用于南网天广直流实际故障信号的分析,说明了Prony分析及阶数选择方法的有效性.
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| 关 键 词： | Prony算法 参数选择 动态变化率 信噪比 |
| 文章编号： | 1003-8930(2008)02-0060-05 |
| 修稿时间： | 2007-08-20 |
Analysis of Power System Transient Signal Based on Prony Algorithm |
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| ZHAO Cheng-yong,LIU Juan. Analysis of Power System Transient Signal Based on Prony Algorithm[J]. Proceedings of the CSU-EPSA, 2008, 20(2): 60-64 |
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| Authors: | ZHAO Cheng-yong LIU Juan |
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| Affiliation: | ZHAO Cheng-yong,LIU Juan(Key Laboratory of Power System Protection , Dynamic SecurityMonitoring , Control under Ministry of Education,North China ElectricPower University,Baoding 071003,China) |
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| Abstract: | Dynamic process of power system is analyzed based on the accurate identify of power system transient signal's component.This paper analyzes the choice of the parameters,such as the sample frequency and the sample points,especially defines the dynamic variation ratio(DVR)and the signal to noise ratio(SNR)to select order.Through the analysis of the fault current of synchronous generator with sudden three-phase short circuit,the validity and the veracity of the order-choice-method is verified.The analysis of a... |
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| Keywords: | Prony algorithm option of parameters dynamic variation ratio(DVR) signal to noise ratio(SNR) |
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