基于MATLAB的电力系统稳定性分析与仿真毕业论文

山东农业大学

毕业论文

基于MATLAB的电力系统稳定性分析与仿真

装

、丁院部机械与电子工程学院

订

专业班级电气3班

线

届次20**届_________

学生姓名 _______________________

学号 __________________________

指导教师 ____________ 副教授

二0**年六月六日

摘要.................................................................................. .•…Abstract ......................................................................................................................................... II 1绪论................................................................................ 1...

1.1课题背景................................................................. 1..

1.2课题内容................................................................. 1..

1.3课题意义................................................................. 1.. 2简单电力系统的静态稳定性及其仿真分析 (2)

2.1电力系统静态稳定性简介 ...................................................... 2.

2.2简单电力系统的静态稳定性仿真 (4)

2.2.1Simulink模型构建及参数设置............................................ 4.

2.2.2保持电势E q'=q。'常数，励磁系统的综合放大系数为5.7857仿真分析 (7)

2.3提高系统静态稳定性的措施 (9)

2.3.1采用自动调节励磁装置 (9)

2.3.2减小元件的电抗........................................................ 1.0

2.3.3提高线路标称电压等级 (10)

2.3.4改善系统的结构和米用中间补偿设备 (11)

3简单电力系统的暂态稳定性及其仿真分析 (11)

3.1电力系统的暂态稳定性简介 (12)

3.2 Simulink模型及仿真结果 ..................................................... 1.4

3.3提高系统暂态稳定性的措施 (18)

3.3.1改变制动功率（发电机输出的电磁功率） .................................. 1 8

3.3.2改变原动功率（原动机输出的机械功率） .................................. 1 9

3.3.3系统失去稳定后的措施 (20)

4总结与展望 (21)

参考文献 (22)

致谢................................................................................. 23.

Contents Abstract.......................................................................................................................................... I I 1 In troduct ion . (1)

1.1 Task background (1)

1.2 Task contents (1)

1.3 Task sig nifica nee (1)

2 The static stability of power system and its simuli nk (2)

2.1 In troduct ion of power system static stability (2)

2.2 Simuli nk of power system static stability (4)

2.2.1 Simuli nk model con struct ion and parameter setting (4)

2.2.2 Keep ing voitage E q '=E q。' =con sta nt, simuli nk of the excitati on system whe n

the amplificati on coefficie nt is5.7857 (7)

2.3 Measures to improve static stability. (9)

2.3.1 Using automatic excitati on devices (9)

2.3.2 Decrease the reacta nee of components (10)

2.3.3 In crease the voltage grade of power line (10)

2.3.4 Improve the structure of the system and using the compensatingdevices. (11)

3 The tran sie nt stability of power system and its simuli nk (11)

3.1 In troduct ion of power system tran sie nt stability (12)

3.2 Simuli nk model and the results (14)

3.3 Measures to improve tran sie nt stability (18)

3.3.1 Change the braking power(electromagnetism power of the generatQr (18)

3.3.2 Change the motive powe r (mechanical power of prime move) (19)

3.3.3 Measures after stability lost (20)

4 Con clusi ons and expectatio ns (21)

Refere nces (22)

Ack no wledgeme nt (23)