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Iterative Prony Method Based Power System Low Frequency Oscillation Mode Analysis and PSS Design

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5 Author(s)
Hu Guoqiang ; Key Lab. of Power Syst. Protection & Dynamic Security Monitoring & Control, Beijing ; He Renmu ; Yang Huachun ; Wang Peng
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This paper presents an identification method based on the iterative Prony to identify transfer function and configure PSS parameters using residue way. The iterative Prony is a very useful method to acquire power system oscillation modes, by which the system eigenvalue, oscillation frequency, amplitude, damping and relative phase can be directly estimated using the response of given input signals. Considering the influence of input signal on output signal, the iterative Prony can acquire the transfer function of power system, then, according to the corresponding residues we conducted coordinated setting of power system stabilizer (PSS) by residue method. The simulation results for two testing system examples prove that this proposal method is effective in the power system oscillation mode analysis and parameters determination of PSS, can improve eigenvalues of system and can enhance system damping after PSSs whose parameters are optimized by above method are built into power system

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Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005 IEEE/PES

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