3.5萬(wàn)字 75頁(yè)
摘要：
微機(jī)保護(hù)將朝著高可靠性、簡(jiǎn)便性、開放性、通用性、靈活性和網(wǎng)絡(luò)化、智能化、模塊化、動(dòng)作過程透明化方向發(fā)展，并可以方便地與電子式互感器、光學(xué)互感器實(shí)現(xiàn)連接，同時(shí)，要跳出傳統(tǒng)的“繼電器”概念，充分利用計(jì)算機(jī)的計(jì)算速度、數(shù)據(jù)處理能力、通信能力和硬件集成度不斷提高等各方面的優(yōu)勢(shì)，結(jié)合模糊理論、自適應(yīng)原理、行波原理、小波技術(shù)和波形特征等，本文在分析了幾種經(jīng)典的繼電保護(hù)算法，包括采樣值積分算法、Mann-Morrison導(dǎo)數(shù)算法、Prodar-70算法、全周傅氏算法、半周傅氏算法等的基礎(chǔ)上，引入一種新型的可以濾除直流分量的全周傅氏精確算法，該算法不僅完全保留了全周傅氏算法的濾波功能，而且對(duì)衰減直流分量也具有很強(qiáng)的濾波特性，此外，本算法采用一個(gè)周波或一個(gè)周波加一個(gè)采樣點(diǎn)的數(shù)據(jù)窗，就可以計(jì)算出各諧波分量的幅值，算法簡(jiǎn)單。在引入新算法的同時(shí)，設(shè)計(jì)了基于DSP TMS320LF2407A的發(fā)電機(jī)保護(hù)裝置。
Abstract

The protection for main power equipment is important to the stability and security of power system. Because of the electric power, my country has planned to establish some power plants. It is very important and applied to study the protection of generator.
With the development of micro-computer, the computer technology has spread all over every field about protection of generator ,such as the studies of protection scheme based on micro-computer and manufacture of relay, This thesis includes; To select appropriate algorithms is one of the basic issues of micro- processor-based relays. When select algorithms, we should consider two issue, speed and precision. After analyzing the several classic algorithms, including Sampling Multiplication Algorithm, Mann-Morrison, Algorithm, Prodar-70 Algorithm, Holo-cycle Fourier Algorithm and Half-cycle Fourier Algorithm, this paper present a new kind of Holo-cycle Fourier Algorithm which can filter the decaying DC component. The new algorithm is simple and can be applied to microprocessor relay protection to pick up harmonics. Based on the new Holo-cycle Fourier Algorithm, the generator relay is developed using DSP TMS320LF2407A.
This paper discusses the system structure of generator-based on microprocessor relay.


Key words: Generator, Protective Relay, Fourier Algorithm, DSP TMS320LF2407A

目 錄
1. 緒 論
2. 發(fā)電機(jī)保護(hù)原理
3. 微型發(fā)電機(jī)保護(hù)總體設(shè)計(jì)方案研究
4. 微機(jī)型發(fā)電機(jī)保護(hù)裝置的硬件電路分析與設(shè)計(jì)
4.1 微機(jī)保護(hù)裝置的典型結(jié)構(gòu)
4.2 硬件電路設(shè)計(jì)
4.2.1 模擬量輸入電路
4.2.2 電壓形成回路
4.2.3 雙口RAM的設(shè)計(jì)
4.2.4 DSP模塊電路設(shè)計(jì)
4.2.5 開關(guān)量輸入輸出電路
4.2.6 MCU模塊設(shè)計(jì)
4.2.7 AT89C52與PC機(jī)之間的通信
5. 保護(hù)與濾波算法研究與改進(jìn)
6. 軟件設(shè)計(jì)
結(jié) 論
致 謝
參 考 文 獻(xiàn)