DSP配网自动化中的FTU设计
论文阐述了目前我国配网自动化的现状以及馈线自动化的实现方式，给出了使用DSP技术设计制造自动化远方终端FTU的方案。设计采用了先进的DSP技术并以数字信号处理器中的TMS320F28335芯片作为主控制器，设计了FTU的外围电路，包括基于频率跟踪的交流采样、硬件滤波、通信以及FIR数字滤波电路等，并对其进行仿真分析。论文完成了对FTU关键硬件电路设计、测试、软件程序流程图和算法的编写、调试与仿真，实现了FTU的主要功能，完成了对本次设计成败的验证。
毕业论文关键词：馈线自动化 馈线远方终端 FIR数字滤波 FFT算法
Abstract The distribution automation get new development by science and technology, distribution network is connected to users to distribute the electric energy. So, it must have reliable energy to improve the quality of service and the operation. Feeder automation is an important part of distribution automation, feeder terminal unit is the base equipment of feeder automation, it play an important role in feeder automation system and distribution system.
In this paper, it expounds the current situation of distribution automation and the feeder terminal unit by the digital signal processing and design the feeder terminal unit select digital processor-TMS320F28335 as the CPU of FTU. To design the main function of FTU, it include the alternating-current sampling, hardware circuit, date communication module, arithmetic of FIR and simulation analysis. In this paper, it finished the hardware design of FTU and completed the verification, drafted the soft flow chart, gave the main programming and debugged it, finished the simulation by the MATLAB in computer. Achieved the function, completed the successful verification for this design.
Keywords : Feeder automation Feeder terminal unit
FIR filter Fast Fourier Transform algorithm
目 录
摘 要 I
Abstract II
1 绪 论 1
1.1 配电网自动化及其发展 1
1.1.1 配网自动化的主要功能 1
1.1.2 国内外配网自动化的发展现状 1
1.2 馈线自动化简介 3
1.2.1 馈线自动化的实现方式 3
1.2.2 馈线自动化系统组成 3
2 FTU的硬件电路设计 5
2.1 FTU的总体结构 5
2.2 FTU的功能与模块设计 5
2.3 DSP芯片的选择 6
2.4 FTU的电源模块设计 7
2.4.1 FTU双端电源切换供电 8
2.4.2 FTU蓄电池监控电路 8
2.4.3 FTU外围小电路设计 9
2.5 AD采集模块 14
2.6 开关量输入输出电路 17
2.7 通信电路 18
2.7.1 异步串行通信电路设计 19
2.7.2 CAN总线通信电路设计 21
3 FTU算法与系统软件设计 23
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