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毕业设计-无功功率补偿控制器设计，正文共59页，9610字，附Protel图纸
摘要：今年来，随着我国国民经济GDP(国民生产总值)的不断增长，我国的电力工业也有了长足的发展。同时电力网中的无功问题也已逐渐引起人们的广泛关注，各种电力电子装置在电力系统、工业、交通和家庭中的应用日益广泛。根据这种情况，设计出一种能在低压侧装设无功补偿的装置通过提高电能质量和功率因数，从而维护电力系统安全、稳定地运行。本系统能提高供用电系统及负载的功率因数，降低设备容量，减少功率损耗。稳定受电端及电网的电压，提高供电质量。
关键词：无功功率补偿；过压；功率因数；供电效率
The Design of Reactive Power Compensation
Student: Yang Yi
Tutor: Liu Xu-hong
(Oriental Science & Technology College of Hunan Agricultural University,Changsha 410128)
Abstract: In recent years,as Chinese nationl GDP (gross domestic product) is growing,Chinese prower industry has also been considerable development.While the reactive power grid problems have gradually attracted people’s attention, various power electronics devices in electric power systems,industrial,transportation and the family is used widely.According to this , a low-pressure side in the installation of reactive compensation devices is designed by improving the power quality and power factor,so as to maintain power system security and stable aperation. The system can not noly improve the electricity supply system and load power factor,but also reduce equipment capacity and power loss.It can receiving end and the stability of the grid voltage and improve the quality of power supply .
Key words: reactive power compensation; overvoltage;power factor;power efficiency
目 录
摘要…………1
关键词………1
1 前言…………1
2 系统功能说明…2
2.1 功能特点 2
2.2 技术参数 3
3 系统硬件框图…4
4 系统各模块工作原理与实现方法………5
4.1 系统的供电5
4.2 按键扫描电路…………6
4.3 电流和电压相位差检测电路………6
4.4 电流和电压的A/D转换电路………9
4.5 八段数码管和LED指示灯电路……11
4.6 十路电力电容驱动电路12
4.7 EEPROM的驱动电路……15
5 软件设计与代码分析………16
5.1 初始化、欠流判断和开机按键扫描程序………16
5.2 检测电力电容容量程序18
5.3 检测功率因数程序……19
5.4 参数设置程序22
6 结论…………25
参考文献 ……25
致谢…………26
附录…………26
附录1…………26
附录2…………36