電力系統(tǒng)低頻振蕩的matlab仿真畢業(yè)論文

1、12009 2009 屆畢業(yè)生 屆畢業(yè)生畢業(yè)論文 畢業(yè)論文題 目: 電力系統(tǒng)低頻振蕩的 電力系統(tǒng)低頻振蕩的 MATLAB 仿真 仿真 院系名稱： 院系名稱： 電氣工程學(xué)院 電氣工程學(xué)院 專業(yè)班級： 專業(yè)班級： 電氣 電氣 0501 學(xué)生姓名： 學(xué)生姓名： 學(xué) 號： 號： 20054720108

2、 指導(dǎo)教師： 指導(dǎo)教師： 教師職稱： 教師職稱： 講師 講師 2009 年 06 月 10 日IITitle Simulation using MATLAB about Low frequency oscillation of power system

3、 AbstractWith the growing scale and complexity of power system, the power system dynamic stability issue became a critical problem. The inter-area low frequency oscillations caused by the interconnection of weakly couple

4、d power systems threaten the security and stability of the interconnected power systems badly. When the event of low frequency oscillations, it will cause the tie lines over-current tripping or between systerm and the sy

5、sterm or unit and the systerm out of step separation. It will cause one or more area large scale blackouts,makes the production and daily life to came to palsy and confusion, breeds disastrous loss to people’s life and n

6、ational economy. It is an urgent task to investigate the mechanism and influencing factors of the inter-area low frequency oscillations, and design effective measures to damp the inter-area oscillations. This article

7、 briefly introduces the formation mechanism and analysis method of low frequency oscillations. It explain the characteristic analysis method and the selective modal analysis method of power system low frequency oscillati

8、ons detaily. The text also derived formulas of the eigenvalue, the eigenvectors, the relevant factor, related mechanical and electrical circuit ratio. The selective modal analysis method achives the reduce-order calculat

9、ion for the electromechanical modes, but its calculation precision isn’t higher and sometimes it may lose eigenvalues.In this paper, it gives the basic characteristics and application of MATLAB/Simulink and introduces MA

10、TLAB software used in power system,as well it introduces the functions and characteristics of the dynamic simulation tool Simulink and power system toolbox PSB (Power System Blockset) in MATLAB environment. It also proce