电力系统稳定器PSS的设计毕业论文

oscillation maybe happen to power system when the system In the normal operation.It gives a great help if the power system after the addition of PSS.

Keywords ：low frequency oscillation；negative damping；power system stabilizer

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目 录

摘 要 .................................................................................................................................... I Abstract .................................................................................................................................. II 目 录 ................................................................................................................................. IV 1 绪论 ................................................................................................................................... 1

1.1 课题的意义 ............................................................................................................. 1

1.1.1 研究背景 ....................................................................................................... 1 1.1.2 国内外的研究现状 ....................................................................................... 2 1.2 电力系统稳定 ......................................................................................................... 4

1.2.1 电力系统稳定性的分类 ............................................................................... 4 1.2.2 提高电力系统稳定的措施 ........................................................................... 6 1.2.3 励磁系统对电力系统稳定的影响 ............................................................... 7 1.3 MATLAB的简介 .................................................................................................... 8 1.4 本论文的主要工作 ................................................................................................. 9 2 同步发动机方程 ............................................................................................................. 10

2.1 同步发动机的电压方程 ....................................................................................... 10 2.2 同步发电机的磁链方程 ....................................................................................... 11 2.3 同步发电机的电磁功率方程 ............................................................................... 16

2.3.1 隐级式发电机的电磁功率方程 ................................................................. 16 2.3.2 凸极式发电机的电磁功率方程 ................................................................. 18 2.4 同步发电机的转子运动方程 ............................................... 错误！未定义书签。

2.4.1 同步发电机的转子运动方程 ..................................... 错误！未定义书签。 2.4.2 发电机转子运动方程的研究意义 ............................................................. 19

3 电力系统稳定器基本介绍 ............................................................................................. 20

3.1 电力系统稳定器简介 ........................................................................................... 20 3.2 电力系统弱阻尼产生原因 ................................................................................... 21 3.3 低频振荡简介 ....................................................................................................... 21 3.4 电力系统稳定器抑制低频振荡原理 ................................................................... 21 3.5 本章小结 ............................................................................................................... 23 4 PSS的设计 ................................................................................................................... 24

4.1 电力系统稳定器的设计原理 ............................................................................... 24

4.1.1 PSS网络的设计PSS网络的设计 .............................................................. 25 4.1.2 汽轮机及其调节系统超前补偿网络的设计 ............................................. 26 4.2 本章小结 ............................................................................................................... 27

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5 电力系统稳定器MATLAB仿真分析 ........................................................................... 28

5.1 简单电力系统的建立 ........................................................................................... 28 5.2 模型运行仿真分析 ............................................................................................... 31 5.3 PSS作用分析 ..................................................................................................... 34 5.4 本章小结 ............................................................................................................... 34 6 主要结论和展望 ............................................................................................................. 35

6.1 主要结论 ............................................................................................................... 35 6.2 展望未来 ............................................................................................................... 36 参考文献 ............................................................................................................................. 37 致 谢 ................................................................................................................................... 39

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