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........................................................ 1.02.3.3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 ..................................................... 1.43.3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 83.3.2改变原动功率（原动机输出的机械功率） .................................. 1 93.3.3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 nthe 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)电力系统稳定性分析及仿真（山东农业大学机械与电子工程学院泰安271018）摘要：电力系统是由以下环节组成的，即产生电能、输送电能、变换电能、配送电能和使用电能。
由于国民经济发展的需要，电力系统已由最早的简单供电系统发展到跨区域甚至跨国界的互联系统。
并且电力系统规模的扩大有益于能源开发、负荷调整、系统的安全和经济运行等。
但是，要想发挥电力系统优势，需要保证系统的稳定运行。
电力系统在运行中，各种扰动都会对系统的安全运行构成威胁，这时必须要采取一定的措施，否则可能会造成电力系统的瘫痪，引发大面积的停电事故。
为使电力系统的稳定运行，需要对电力系统进行稳定性分析。
电力系统稳定性问题就是当系统在某一正常运行状态下受到某种干扰后，能否经过一定的时间后回到原来的运行状态或者过渡到一个新的稳定运行状态的问题。
此外，假如达不到所要求的稳定性或者要提高系统的传输能力时，就必须采用一定的方法提高稳定性。
关键词：电力系统静态稳定暂态稳定提高稳定措施The Analysis of Power System Stability and Its Simulation Basedon MATLAB(Mechanical & Electrical Engineering College of Shandong Agricultural University, Tai ' aS,handong 271018) Abstract Electric power system is made up of electric power generation, power transmission , power distribution , power utilization , and etc. Due to the need of national economic development, the power system has developed from the simple power supply system to inter-regional and even cross-border in terc onnection systems. And expa nding the scale of power system is ben eficial to the en ergy developme nt, load adjustment, safe and economical operation of the system and so on.However, to make full use of the power system it is n ecessary to en sure the safe and stable operatio n of the power system .In the operati on of the power system, all kinds of disturba nces will pose a threat to the system, so appropriate measures must be take n, or else the power system is likely to collapse, caus ing large-scale blackouts .In order to en sure the security of the power system, there is the need for power system stability analysis. The stability of the power system is whe n the system is subjected to some disturba nces in a no rmal operati ng state, whether it is possible to run back to the original state or transform to a new steady state after a certain period of time. In additi on, whe n the stability does n ot meet the requireme nts or the tran smissi on capacity of the system wants to be in creased, there is the n eed to study the appropriate measures to enhance stability.Keywords:power system; steady stability; tran sie nt stability; measures to enhance stability1绪论1.1课题背景随着我国电力工业不断发展实现全国电网互联是一个大的发展方向，由于电力体制改革的不断推进，加快了全国联网进程。