摘   要 在当今电力系统结构日趋复杂的现实背景下，无功补偿对于保证电力系统可靠运行、提高电能质量、降低网络损耗等方面有着十分重要的作用，值得引起我们的关注。 本文针对低压配电网的实际运行状况设计了一套无功补偿系统。系统以MSP430F149 单片机为核心围绕设计了测量、投切控制、人机交互、通信等硬件功能模块，绘制了完整的电路图。软件方面完成了各个功能模块控制流程设计。系统利用了 MOC3083 芯片控制晶闸管投切电容器，有效的解决了电容器“过零投切”的问题。在电网参数的采集方面，采用了有效的滤波措施，并使用了高效、精确的采样算法。控制策略上，采用了改进的分区补偿思想，可以有效地防止投切振荡过程。  37759
毕业论文关键词：  无功补偿；MSP430F149；MOC3083；晶闸管投切电容器  
Abstract Under the background of that the current electric power system is becoming more and more complex, reactive power compensation plays an important role to ensure power system reliable operation, improve the power capacity , reduce network losses and so on. that is worth our attention. In this paper, a smart reactive power compensation system is designed for the actual operation of low-voltage distribution network. The core of the system is MSP430 microcontroller, and the system contains hardware function modules including measurement, control, human-computer interaction and communication with complete circuit diagram. The software includes the function flow chart of each module. The MOC3083 chip is used to control the thyristor switched capacitor(TSC), which effectively solves the problem of ‘Zero crossing conduction’. The system uses effective filtering measures and precise sampling algorithm which ensures the accuracy of the measurement. In control strategy, the problem of oscillation is solved by the idea of the improved partition compensation.  Key Words: Reactive power compensation; MSP430F149; MOC3083; TSC 
目录
摘要I
AbstractII
1绪论1
1.1课题研究背景及意义1
1.2无功补偿研究现状..1
1.3本论文主要内容.4
2电网无功补偿基本原理及方法..5
2.1无功补偿原理5
2.2晶闸管投切电容器原理.6
2.2.1晶闸管投切电容器(TSC)基本理论.6
2.2.2并联电容器投切时刻的选取7
2.2.3TSC主接线方式.7
2.3确定补偿容量的方法8
3系统硬件电路设计..10
3.1TSC主回路电路设计..10
3.1.1电力电容器选型10
3.1.2晶闸管选型.11
3.1.3串联电抗器选型12
3.2控制电路系统整体方案12
3.2.1控制系统功能设计要求12
3.2.2控制系统总框图13
3.3CPU选型及最小系统设计.13
3.3.1CPU选型13
3.3.2最小系统设计..14
3.4测量模块电路设计.15
3.4.1电压信号转换电路.15
3.4.2电流信号转换电路.16
3.4.3电平提升电路..17
3.4.4钳位滤波电路..17
3.5投切控制模块电路设计18
3.6人机交互模块电路设计19
3.6.1液晶显示模块电路设计20
3.6.2键盘模块电路设计.20
3.6.3指示灯电路及蜂鸣器电路设计21
3.7通信模块电路设计.22
3.8其他相关电路设计.23
3.8.1电源模块电路设计.23
3.8.2温度测量模块电路设计23
3.8.3保护电路设计..24
4系统软件设计25
4.1软件的组成结构25
4.2数据采集模块软件设计26
4.3参数计算模块软件设计27
4.4投切控制模块软件设计31
4.5人机交互模块..33
4.5.1液晶模块软件设计.33
4.5.2键盘模块软件设计.34
4.5.3指示灯与报警模块软件设计..34
4.6通信模块软件设计.34
5总结与展望..37
5.1总结.37 MSP430F149单片机配电网无功补偿系统的设计:http://www.youerw.com/zidonghua/lunwen_36604.html