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Study on Power System Stability and Power System Stabilizer Control Based on Normal Form Theory

Author: ZhaoLei
Tutor: SuXiaoLin
School: Shanxi University
Course: Proceedings of the
Keywords: Power system stability Oscillation mode Normal form Participation Factor Power system stabilizer configuration
CLC: TM712
Type: Master's thesis
Year: 2011
Downloads: 39
Quote: 0
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Abstract


With the development of the power system , the power system has evolved into the interconnected systems . Energy rational use of grid interconnection , and greatly enhanced the reliability of the grid . However , grid interconnection of the power system stability problem has become increasingly prominent , especially in the overloaded case (STRESS) , a variety of new oscillation phenomenon and problems emerging . Due to the limitations of the traditional power system stability analysis method , a number of new phenomena and problems can not give a good explanation , it is necessary to apply the new theory and methods to study these new dynamic phenomenon . The power system is a high-dimensional , nonlinear complex systems , heavy - duty operating conditions , the nonlinear characteristics and nonlinear behavior is outstanding . The traditional analysis of the linear characteristic of the power system is approximated as a linear system analysis, ignoring the nonlinear . Under certain operating conditions , especially overloaded operating conditions , even if it is dynamically stable under small interfering linear characteristics analysis will also bring greater error , can not even be certain dynamic phenomena and behaviors given reasonable explanation. In this paper, the normal form theory and analysis methods to study the dynamic behavior of the power system overloaded operation mode . The normal form analysis method taking into account the nonlinear interaction between the dynamic mode dynamic system , analysis of the linear feature analysis can not reveal the new dynamic mode . Text , in-depth study of the normal form and normal form analysis method to derive the second-order analytical solutions , research and improvement of the calculation of the normal form of the key parameters ( normal form transformation parameters and the initial value of the normal form ) method , study measure and evaluate the power system nonlinear characteristics and dynamic mode nonlinear interaction between the strength of the indicators , the application of the normal form analysis methods to analyze the dynamic stability of the power system in the overloaded system , and draw some valuable conclusions . This paper studies the normal form theory to determine the configuration of the power system stabilizer (PSS) . Using nonlinear participation factors and the mode nonlinear correlation between the role of a range of indicators , to determine PSS configuration , and compared with the traditional use of linear participation factors , given the configuration of the power system stabilizer under heavy .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Power system stabilizer
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