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This paper presents a method for robust stability analysis of large-scale power systems based on the value set approach. The order of the system is first reduced by the dimension reduction and modal truncation to capture the oscillation modes of interest. The characteristic polynomial is then obtained by the diagonal expansion, which allows the structure of coefficient functions to be exploited. The...
PSS4B stabilizer is a multi-band stabilizer received attention in recent years. The effectiveness of such a stabilizer depends on a number of factors, among them how stabilizer parameters are tuned playing a key role. In this case study, two common parameter tuning methods, the ideal phase curve method and the residue method, are used to determine the parameters of a PSS4B stabilizer and a PSS1A stabilizer...
In this paper, effect of excitation control parameters of doubly-fed induction generators on power system voltage stability is discussed. The excitation control of DFIG considered is mainly the constant voltage control and constant power factor control. Simulation test is carried out in Zhangjiakou wind farm in China, and key parameters of excitation control model of DFIG system are studied.
In this paper, excitation control mode of a generalized GE 1.5MW doubly-fed induction generators (DFIG) is studied, and its effect on power system voltage stability is discussed. The study focuses on the four excitation control mode. They are constant power factor control with/without terminal voltage feedback, and constant voltage control with/without terminal voltage feedback. In addition, key parameters...
As a clean renewable energy, wind energy draws more and more attention around the world. In case of high wind speed or low speed but substantial installed wind power capacity, wind turbine generators (WTGs) will take the place of traditional power plant partly. Under the circumstance, the transient stability will change. Therefore, in this article, the synthetical dynamic model of WTG is introduced...
In this paper the analysis of small signal stability of grid-connected doubly fed induction generators (DFIG) is presented. The detailed model of grid-connected DFIG wind turbine is firstly established, and the eigenvalues are classified and characterized based on participation factors. Then the modal analysis including its converter and pitch controllers is studied, and model simplification of the...
Based on eigenvalue analysis of small signal stability analysis, mechanism of large power oscillations of inter-area lines caused by local mode is studied by right eigenvector characteristic and generator power-angle characteristic. Eigenvalue of local mode is changing with running conditions and relations between the elements of right eigenvector of all generators also are changed. When power deviations'...
Power electronics has evolved to a point where building large-scale power electronics systems has become a reality. However, due to lack of standardized power electronics modules, it is difficult to reduce the costs of building power electronics systems via the system integration approach. In this paper, the input and output impedance of power electronics modules are selected as the objects for standardization...
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