【正文】 本科畢業(yè)設(shè)計 (論文 ) 題目： 電能質(zhì)量 分析 — 硬件設(shè)計 院（系） 電子信息工程學(xué)院 專 業(yè) 電氣工程及其自動化 班 級 0090415 姓 名 陳凱 學(xué) 號 090415101 導(dǎo) 師 宋曉茹 20xx 年 6 月 I 電能質(zhì)量分析 — 硬件設(shè)計 摘 要 現(xiàn)代電力電子設(shè)備和非線性負載的大量使用又造成電能污染日趨嚴重，電能質(zhì)量成為電力部門及其用戶日益關(guān)注的問題 ,因此對電能質(zhì)量進行檢測與分析具有重要的意義。 本文在查閱國內(nèi)外電力參數(shù)檢測技術(shù)的有關(guān)文獻資料的基礎(chǔ)上，提出了基于 PIC單片機的電能質(zhì)量檢測儀的總體設(shè)計方案 , 設(shè)計采用以 PICl8F458為核心，設(shè)計了相應(yīng)的數(shù)據(jù)采集與轉(zhuǎn)換模塊、通訊轉(zhuǎn)換電路、人機交換電路、時鐘電路，最后的實驗調(diào)試結(jié)果表明，本設(shè)計是可行的！ 關(guān)鍵詞： PIC 單片機；電能質(zhì)量檢測 ；電壓檢測；頻率轉(zhuǎn)換 II The Power Quality Analysis — hardware design Abstract Modern power electronic devices and nonlinear loads caused by heavy use of energy and pollution is worsening, power quality, power sector and its users bee a growing concern. However, with science and technology and the rapid development of the national economy, industrial production on the power quality have bee increasingly demanding. Therefore, power quality testing and analysis has important significance. In the literature on the basis of domestic and international power parameter detection technology, the overall design of the PIC microcontrollerbased power quality detector design uses a PIC18F458 as the core, the design of data acquisition and conversion modules, munication conversion circuit, the humanputer exchange circuit, clock circuit. The final experimental debugging results show that the design is feasible. Key Words: PIC microcontroller。 power quality detector。 voltage detection。 frequency conversion i 目錄 摘 要 ............................................................................................................................. I Abstract ......................................................................................................................II 1 緒論 ....................................................................................................................... 1 電能質(zhì)量問題的提出 .................................................................................. 1 電能質(zhì)量定義 .............................................................................................. 2 電能質(zhì)量的指標 .......................................................................................... 3 電壓偏差 ........................................................................................... 3 頻率偏差 ........................................................................................... 3 電網(wǎng)諧波含量 ................................................................................... 3 電壓波動 與閃變 ............................................................................... 4 三相不平衡度 ................................................................................... 4 電能 質(zhì)量的改善措施 .................................................................................. 5 電能質(zhì)量檢測的研究現(xiàn)狀與展望 .............................................................. 6 系統(tǒng)主要研究內(nèi)容 ...................................................................................... 6 2 電能質(zhì)量檢測系統(tǒng)總體設(shè)計 ........................................................................ 7 系統(tǒng)功能 ...................................................................................................... 7 系統(tǒng)組成 ...................................................................................................... 7 3 電能質(zhì)量檢測系統(tǒng)的硬件設(shè)計 .................................................................... 9 系統(tǒng) 硬件框圖 .............................................................................................. 9 單片機簡介 .................................................................................................. 9 PIC18F458 系列概述 ...................................................................... 10 PIC18F458 單片機 整體控制 .......................................................... 11 數(shù)據(jù)采集與轉(zhuǎn)換 ........................................................................................ 12 ii 電壓和電流的檢測 ......................................................................... 12 信號 調(diào)理電路 ................................................................................. 13 A/D 轉(zhuǎn)換電路 .................................................................................. 14 測頻電路 ......................................................................................... 15 通信轉(zhuǎn)換電路 ............................................................................................ 16 CAN 總線簡述 ................................................................................ 16 CAN 總線與 PIC 單片機的接口設(shè)計 ............................................ 16 人機交換部分電路設(shè)計 ............................................................................ 17 鍵盤接口設(shè)計 ................................................................................. 17 LCD 接口設(shè)計 ................................................................................ 18 時鐘電路設(shè)計 ............................................................................................ 20 芯片介紹 ......................................................................................... 20 時鐘芯片接口設(shè)計 ......................................................................... 20 4 電能質(zhì)量檢測系統(tǒng)的抗干擾設(shè)計 ............................................................. 22 干擾的成因及危害 .................................................................................... 22 硬件干擾設(shè)計 ............................................................................................ 22 5 電能質(zhì)量檢測系統(tǒng)調(diào)試 ................................................................................ 24 系統(tǒng)硬件設(shè)計特色 .................................................................................... 24 系統(tǒng) 調(diào)試 ......