景德镇陶瓷学院 本科生毕业设计（论文）
中文题目： 电力系统稳定器的设计 英文题目：THE DESIGN OF POWER SYSTEM STABILIZER
院 系： 机械电子工程学院
专 业： 自动化
姓 名： 学 号： 200910320122 指导教师：
完成时间： 2013年6月
景德镇陶瓷学院本科生毕业设计（论文）
摘 要
随着社会的发展,电力系统的规模也在不断的扩大,重负荷远距离输电线路也在不断的增多,快速励磁系统以及快速励磁调节器得到普遍运用,这些都使得电力系统低频振荡问题日益突出,因此研究低频振荡问题对电力系统稳定产生的影响也日渐重要。发电机励磁控制向来是受人们关注的保障电力系统稳定运行的重要手段。在此背景下,人们采用电力系统稳定器(Power System Stabilizers,即PSS)作为励磁系统的附加控制。在发电机的励磁系统中，电力系统稳定器是其重要的组成部分。它直接影响发电机的运行特性，对电力系统的安全稳定运行有着重要的影响。电力系统规模的不断增大，系统结构和运行方式的日趋复杂，对发电机电力系统稳定器运行的可靠性、稳定性、经济性和灵活性提出了更高的要求。本文正是根据这些要求以及电力系统稳定器的国内外发展趋势，研究和设计了以TMS320F2812芯片为控制核心的电力系统稳定器。基于TMS320F2812的电力系统稳定器能够在较大的电力系统运行范围内向系统提供充分的阻尼，抑制低频振荡，提高系统的稳定性。
关键词： 电力系统稳定器 低频振荡 TMS320F2812 移相触发
景德镇陶瓷学院本科生毕业设计（论文）
ABSTRACT
With the development of the society, the size of power system is expanding.Heavy-load and long-distance transmission lines are increasing constantly , and the fast excitation system and AVR are widely used. All the development makes the problem of Power System Low Frequency Oscillation more and more significant .Therefore, it is important to study on how the low frequency oscillation in fluence, the power system stability.Excitation control has always been an important means of attention to the protection of power stability of the system. In this context, it is the power system stabilizer (Power System stabilizers PSS) as an additional control of the excitation system.The generator excitation system, excitation controller is an important part. It affects the operation characteristics of generator directly and is very important to safe and stable operation of the power system. With the increasing power of the large scale of the system and the system structure and operation mode of increasingly complicated, the power system requires that the generator excitation controller has higher reliability, stability, economy and flexibility. According to the these requirements, as well as the development trend both here and abroad, this paper researches and designs excitation controller of generator by TMS320F2812 chip as the control center.within the limits of the system to provide adequate damping power system stabilizer based on TMS320F2812suppress low-frequency oscillation and improve the stability of the system.
KEYWORDS: power system stabilizer Low-frequency oscillation MS320F2812 Phase-shift trigger
景德镇陶瓷学院本科生毕业设计（论文）
目 录
1 引言.............................................................. 1 1.1 电力系统稳定器 ................................................ 1 1.2 电力系统稳定器国内外研究现状 .................................. 1 1.3 电力系统稳定器发展趋势 ........................................ 2 1.4 本课题研究意义 ................................................ 2 2 电力系统低频振荡机理............................................. 4 2.1 电力系统低频振荡 .............................................. 4 2.2 电力系统数学模型分析方法 ...................................... 5 2.3 电力系统低频振荡分析模型 ...................................... 7 2.4 影响阻尼的因素及解决措施 ...................................... 9 3 电力系统稳定器的工作原理........................................ 10 3.1 电力系统稳定器抑制低频振荡的原理 ............................. 10 3.2 电力系统稳定器的输入信号 ..................................... 11 3.3 PSS的传递函数 ............................................... 12 4 电力系统稳定器的结构............................................ 13 4.1 电力系统稳定器的结构图 ....................................... 13 4.1.1 TMS320F2812 芯片介绍..........................................................................................13 4.1.2 TMS320F2812 引脚介绍......................................................................................14 4.2 模拟量输入通道 ............................................... 14 4.2.1 交流信号采集调理电路 ..................................... 16 4.2.2 直流信号采集调理电路 ..................................... 17 4.2.3 ADC采样模块.............................................. 18 4.3 开关量输入输出单元 ........................................... 19 4.3.1 开关量输入通道 ........................................... 19 4.3.2 开关量输出通道 ........................................... 21 4.4 同步检测及移相触发单元 ....................................... 22 4.4.1 同步信号的检测 ........................................... 23 4.4.2 移相脉冲的形 .............................................24 4.4.3 脉冲功率放大电路 ......................................... 25 4.4.4脉冲故障检测单元.......................................... 25 4.5 其它硬件模块 ................................................. 27 5电力系统稳定器的软件设计 ......................................... 28 5.1电力系统稳定器软件总体设计思想 ............................... 28
景德镇陶瓷学院本科生毕业设计（论文）
5.2 主程序设计 ................................................... 28 5.2.1 系统初始化模快 ........................................... 28 5.2.2 电量计算模块 ............................................. 29 5.2.3 控制调节模块 ............................................. 33 5.2.4限制保护模块.............................................. 35 5.3 中断程序设计 ................................................. 37 5.3.1 同步信号捕获中断 ......................................... 37 5.3.2 移相脉冲中断 ............................................. 40 5.3.3 AD转换完成中断........................................... 44 5.4 软件可靠性设计 ............................................... 46 6 结论............................................................ 47 致 谢............................................................. 51 参 考 文 献........................................................ 52