Comparing performance of Prony analysis and matrix pencil method for monitoring power system oscillations

2014 ◽  
Author(s):  
S. Chitturi ◽  
S. Chakrabarti ◽  
S. N. Singh
Keyword(s):  
Power System ◽  
Matrix Pencil ◽  
Matrix Pencil Method ◽  
Power System Oscillations ◽  
Prony Analysis

Analysis of power system fault signals based on matrix pencil method

2015 ◽  
pp. 459-462
Author(s):  
Z Xiao ◽  
Y Liu ◽  
Q Zhu ◽  
Y Zhou ◽  
N Wang ◽  
...  
Keyword(s):  
Power System ◽  
Matrix Pencil ◽  
Matrix Pencil Method

A gray-box harmonic resonance frequency identification method of multiple-inverter-fed power system oriented to system designers

2021 ◽  
pp. 0309524X2110379
Author(s):  
Yue Wang ◽  
Yonggang Li ◽  
Yinan Yang ◽  
Binyuan Wu ◽  
Qiyu Liu ◽  
...  
Keyword(s):  
Power System ◽  
Resonance Frequency ◽  
Modal Analysis ◽  
Transfer Functions ◽  
Matrix Pencil ◽  
Identification Method ◽  
Matrix Pencil Method ◽  
Time Simulation ◽  
Frequency Identification ◽  
Harmonic Resonance

This paper presents a gray-box harmonic resonance frequency identification method of multiple-inverter-fed power system, which enables modal analysis oriented to system designers based on only frequency response data provided by diverse vendors or measured by frequency scanning. First, admittance transfer functions of all grid-connected inverters (GCIs) are fitted using Matrix Pencil Method-Vector Fitting (MPM-VF) combined method. Then, node admittance matrix (NAM) is formed according to the topology of whole system. Finally, harmonic resonance frequency along with changes in number of GCIs are identified by NAM-based modal analysis (MA). The proposed gray-box identification method is implemented in a typical multiple-inverter-fed power system. The correctness of harmonic resonance frequency identification results and the effectiveness of the presented method are verified by simulation results obtained in Matlab/Simulink platform and OPAL-RT digital real-time simulation platform. Based on the identification results, a more stable and better power quality multiple-inverter-fed power system can be built by system designers though avoiding the appearance of harmonic sources with corresponding resonance frequency.

Robust H2 Output Feedback Controller Design for Damping Power System Oscillations

2017 ◽  
Vol 6 (10) ◽  
pp. 8
Author(s):  
Kho Hie Kwee ◽  
Hardiansyah .
Keyword(s):  
Power System ◽  
Output Feedback ◽  
Controller Design ◽  
Sufficient Conditions ◽  
Feedback Controller ◽  
Linear Matrix ◽  
Parameter Uncertainties ◽  
Worst Case ◽  
Output Feedback Controller ◽  
Power System Oscillations

This paper addresses the design problem of robust H2 output feedback controller design for damping power system oscillations. Sufficient conditions for the existence of output feedback controllers with norm-bounded parameter uncertainties are given in terms of linear matrix inequalities (LMIs). Furthermore, a convex optimization problem with LMI constraints is formulated to design the output feedback controller which minimizes an upper bound on the worst-case H2 norm for a range of admissible plant perturbations. The technique is illustrated with applications to the design of stabilizer for a single-machine infinite-bus (SMIB) power system. The LMI based control ensures adequate damping for widely varying system operating.

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