摘 要
晶闸管控制电抗器(TCR)型静止无功补偿装置(SVC)由于其对快速波动负荷补偿的良好效果，成为近年来无功补偿的热点。
本设计对SVC的各种装置进行了比较，分析了FC-TCR型SVC的原理以及控制方法，并在此基础上设计了以AT89S54单片机为核心的动态无功补偿装置的控制器。控制电路主要由交流采样单元、外部扩展单元、显示单元以及控制单元等组成，硬件紧凑，控制简单。装置能对电网参数进行实时监测，对系统无功实行跟踪补偿。

关键词:晶闸管控制电抗器，AT89S54单片机，无功补偿

Abstract
Static Var Compensator(SVC) based on Thyristor Controlled Reactor(TCR)has good compensation-perofrmance for rapid changing load, so it has become a hotspot in recent years.
In this paper、all equipments of the SVS family is introduced, the working principle and control on FC-TCR is searched,Based on this theory , a dynamic Var compensator controller is designed with AT89S54 microcomputer.Control circuit mainly include the exchange of sampling unit, the external expansion unit, display units, the control unit and other components, compact hardware, Programming easy, simple control. The device to real-time detection of network parameters, the system implemented tracking reactive compensation.

Key words: Reactive Power ComPensation，thyristor controlled reaetor(TCR)，AT89S54 microcomPuter

目录
摘要........................................................ ..I
Abstract .......................................................II
第1章  绪论 ....................................................1
1.1无功补偿的意义 ..............................................1
1.2国内外发展情况 ..............................................2
1.3静止无功补偿装置种类及装置的选择 ............................5
1.4本课题所做的主要工作 ........................................6
第2章 FC-TCR型无功补偿器的控制原理 .............................7
2.1 FC-TCR的基本结构和运行特性 .................................7
2.2 TCR相控原理................................................ 9
2.3主要接线形式 ...............................................11
2.4控制方法 ...................................................12
2.5主系统中参数计算 ...........................................14
2.5.1 TCR的参数计算............................................14
2.5.2晶闸管参数的计算..........................................16
2.5.3 FC滤波电容容量计算.......................................18
第3章 FC-TCR控制装置的硬件电路设计.............................20
3.1电压电流的转换..............................................21
3.2数据采集电路................................................23
3.3单片机及其扩展电路..........................................30
3.4键盘及显示电路 .............................................36
3.5晶闸管触发电路............................................. 41
3.6过零检测电路 ...............................................42
第4章软件设计 ................................................44
社会经济效益分析...............................................49
结论........................................................  .50
致  谢 ........................................................51
参考文献 ..................................................... 52
附录1 ........................................................ 53
附录2........................................................  59
附录3 ........................................................ 67
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