【摘要】：同步發(fā)電機模擬勵磁系統(tǒng)是電力系統(tǒng)動態(tài)模擬實驗室的重要設(shè)備。目前,在國內(nèi)實驗室中,該裝置多采用模擬電路控制或單片機控制,除與現(xiàn)行電力系統(tǒng)發(fā)電機基于DSP的勵磁系統(tǒng)有較大的差異外,也沒有實現(xiàn)對如失磁等故障的模擬。 本文主要研究工作包括：基于STC89C58單片機的LCD界面板的硬件設(shè)計和LCD監(jiān)控界面軟件實現(xiàn)；基于TMS320LF2812的主控板開入開出量信號處理；上述兩板和上位機之間串行通信協(xié)議制定及各自實現(xiàn)；上位機遠程監(jiān)控界面實現(xiàn)。對研究工作進行系統(tǒng)總結(jié)之后,主要內(nèi)容如下： 在查閱相關(guān)文獻的基礎(chǔ)上,介紹了國內(nèi)外模擬勵磁系統(tǒng)的研究現(xiàn)狀與應(yīng)用,闡述了研制新型DSP模擬勵磁監(jiān)控系統(tǒng)的意義,以及本文完成的主要工作和創(chuàng)新點。 首先,該文講述了LM-1型模擬勵磁監(jiān)控系統(tǒng)的基本原理及硬件組成。硬件部分主要由勵磁控制部分、主回路、操作回路與負阻器組成,對勵磁控制部分中的DSP最小系統(tǒng)等模塊硬件進行了分塊敘述,詳細敘述了監(jiān)控系統(tǒng)涉及到的LCD界面板、DSP主控板以及串行通信接口、I/O隔離轉(zhuǎn)換硬件及其原理。對勵磁監(jiān)控系統(tǒng)的其它部分的硬件進行了簡介,重點為主控板開入開出信號處理、LCD顯示控制、串行通信模塊。 其次講述了了DSP主控板與界面板、遠程計算機之間的通信協(xié)議的設(shè)計與實現(xiàn)；在DSP主程序框架內(nèi),按協(xié)議實現(xiàn)通信；使STC89C58單片機實現(xiàn)LCD菜單顯示操作以及通信協(xié)議；設(shè)計遠程監(jiān)控計算機界面,并實現(xiàn)與DSP通信。對于DSP主控板程序的整體結(jié)構(gòu),詳細闡明了DSP主控板通信部分、LCD界面板的程序流程,并給出上位機監(jiān)控界面的程序流程。 最后講述了LM-1型模擬勵磁監(jiān)控系統(tǒng)的調(diào)試過程,總結(jié)調(diào)試中遇到的問題及其解決方法,并提出了模擬勵磁系統(tǒng)的拓展設(shè)想。 試驗和現(xiàn)場運行表明：以TMS320LF2812DSP芯片作為控制核心的LM-1型模擬勵磁監(jiān)控系統(tǒng),與模擬電路控制或單片機控制的同類裝置相比,LM-1型模擬勵磁系統(tǒng)在穩(wěn)定性、可靠性和精度等方面具有明顯優(yōu)勢,可拓展性強。勵磁監(jiān)控系統(tǒng)功能豐富,控制精度高,實時性好,有效地實現(xiàn)了對現(xiàn)行同步發(fā)電機勵磁系統(tǒng)的模擬。
[Abstract]:Synchronous generator analog excitation system is an important equipment in power system dynamic simulation laboratory. At present, in the domestic laboratory, the device mostly adopts analog circuit control or single-chip microcomputer control, which is not only quite different from the current excitation system of power system generator based on DSP, but also does not realize the simulation of faults such as demagnetization. The main research work of this paper includes: the hardware design of LCD boundary panel based on STC89C58 single chip microcomputer and the software implementation of LCD monitoring interface, the input and output signal processing of the main control board based on TMS320LF2812. The serial communication protocol between the two boards and the host computer is established and implemented, and the remote monitoring interface of the upper computer is realized. After a systematic summary of the research work, the main contents are as follows: on the basis of consulting the relevant literature, the research status and application of analog excitation system at home and abroad are introduced, and the significance of developing a new type of DSP analog excitation monitoring system is expounded. And the main work and innovation of this paper. Firstly, this paper describes the basic principle and hardware composition of LM- 1 analog excitation monitoring system. The hardware part is mainly composed of excitation control part, main circuit, operating circuit and negative resistor. The hardware of DSP minimum system in excitation control part is described in detail, and the LCD interface panel involved in the monitoring system is described in detail. DSP main control board and serial communication interface, I / O isolation conversion hardware and its principle. The hardware of other parts of excitation monitoring system is briefly introduced, with emphasis on the input and open signal processing of the main control board, LCD display control and serial communication module. Secondly, the design and implementation of communication protocol between DSP main control board and boundary panel and remote computer are described. In the framework of DSP main program, communication is realized according to the protocol, and STC89C58 single chip microcomputer is used to realize LCD menu display operation and communication protocol. Design remote monitoring computer interface and realize communication with DSP. For the overall structure of DSP master control board program, the communication part of DSP main control board and the program flow of LCD boundary panel are expounded in detail, and the program flow of upper computer monitoring interface is given. Finally, the debugging process of LM- 1 analog excitation monitoring system is described, the problems encountered in debugging and their solutions are summarized, and the expansion idea of analog excitation system is put forward. The test and field operation show that the LM- 1 analog excitation monitoring system with TMS320LF2812DSP chip as the control core is stable compared with the similar devices controlled by analog circuit or single chip microcomputer. It has obvious advantages in reliability and accuracy, and has strong expansibility. The excitation monitoring system has rich functions, high control accuracy and good real-time performance, which effectively realizes the simulation of the current synchronous generator excitation system.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TM341;TP368.1

【參考文獻】

相關(guān)期刊論文 前10條

1 李家坤;同步發(fā)電機勵磁控制方式發(fā)展綜述[J];電力學報;2005年01期

2 于先平,黃渝陵;GE公司第二代勵磁調(diào)節(jié)器-EX2000[J];電機技術(shù);2004年01期

3 覃平生,劉覺民,周有慶,羅德榮,聶衛(wèi)民;基于80C196KC的原動機仿真系統(tǒng)設(shè)計[J];電力自動化設(shè)備;2003年02期

4 孟文博,吳小鳴,楊國權(quán);全數(shù)字同步電動機勵磁控制系統(tǒng)[J];電氣傳動;2000年02期

5 雷曉蒙,郭國川;當前我國電網(wǎng)結(jié)構(gòu)與穩(wěn)定的主要問題[J];電網(wǎng)技術(shù);1993年02期

6 劉增煌;同步發(fā)電機勵磁控制的任務(wù)及其設(shè)計思想比較[J];電網(wǎng)技術(shù);1999年08期

7 崔永青,王貴光,王晉川,蘇華;勵磁系統(tǒng)改造中一些問題的探討[J];山西電力技術(shù);2001年01期

8 劉政,黃席樾;基于單片機的可控硅全控橋數(shù)字觸發(fā)控制系統(tǒng)[J];重慶大學學報(自然科學版);2002年01期

9 宋福海;西門子Thyrisiem D勵磁調(diào)節(jié)器的特點及功能分析[J];福建電力與電工;2000年01期

10 邵富平,申安祥,鞏有峰,李寶平,張凌俊,萬栗;蘇制200MW機組勵磁調(diào)節(jié)器改造[J];河北電力技術(shù);2003年06期

相關(guān)碩士學位論文 前8條

1 張敏敏;汽輪發(fā)電機自并勵勵磁系統(tǒng)技術(shù)的研究與實踐[D];華北電力大學;2001年

2 譚立新;同步發(fā)電機原動系統(tǒng)仿真器及其動態(tài)特性研究[D];湖南大學;2005年

3 唐英魁;25MW汽輪發(fā)電機勵磁系統(tǒng)的研究與實踐[D];沈陽工業(yè)大學;2005年

4 劉偉;基于dsPIC30F4011的同步發(fā)電機勵磁控制器的研究與設(shè)計[D];大連海事大學;2008年

5 朱s搕，

本文編號：2477037