A Comparative Study between Prony and Eigensystem Realization Algorithm for Identification of Electromechanical Modes

被引：0
|
作者：
Sarkar, Niloy [1 ]
Rao, Krishna [1 ]
Kn, Shubhanga [1 ]
机构：
[1] NITK, Dept Elect Engn, Surathkal 575025, India
来源：
2018 20TH NATIONAL POWER SYSTEMS CONFERENCE (NPSC) | 2018年
关键词：
Inter-area oscillations; electromechanical mode identification; Phasor measurement unit (PMU); Prony analysis; Eigensystem realization algorithm (ERA); Singular value decomposition (SVD); Signal-to-noise ratio (SNR);
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Two measurement-based ring-down electromechanical mode identification algorithms, namely Prony and Eigensystem Realization Algorithm (ERA) are taken up for a comparative study. Since the number of excited modes might vary in a practical power system, it is not easy to determine the model order. This requires an iterative procedure in case of Prony whereas a Singular Value Decomposition (SVD)-based technique achieves this directly in case of ERA as demonstrated through two case studies. It is further shown that ERA estimates the signal better and generates less number of trivial modes as compared to Prony.
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页数：6
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