【正文】 渤海船舶職業(yè)學(xué)院 畢業(yè)（論文） ） I 摘 要 在電力系統(tǒng)中，繼電保護是保證電力系統(tǒng)安全運行和提高電能質(zhì)量的重要工具，而且，電力系統(tǒng)的規(guī)模在不斷擴大，用戶對電能質(zhì)量的要求也在不斷提高。因此，對繼電保護的要求也越來越高。 高頻保護是 110kV 及以上輸電線路的主保護，也是高壓電網(wǎng)保護的第一道防線，能夠?qū)θ€路故障實現(xiàn)無時限切除，這是高頻保護的重大優(yōu)點，所以，在超高壓電網(wǎng)的穩(wěn)定措施中高頻保護受到高度重視。 本次的設(shè)計是 110kV線路微機高頻保護。本文首先簡要介紹了電力系統(tǒng)微機繼電保護的發(fā)展歷史、現(xiàn)狀、技術(shù)特點及其發(fā)展方向。接著詳細論述了 110KV線路微 機繼電保護的構(gòu)成以及各個部分的工作原理，設(shè)計內(nèi)容包括三大部分：硬件電路設(shè)計，軟件部分設(shè)計和高頻保護參數(shù)計算及動作值整定。 硬件電路主要由 CPU主系統(tǒng)、數(shù)據(jù)采集系統(tǒng)和開關(guān)量輸入 /輸出系統(tǒng)構(gòu)成，軟件設(shè)計，主要包括高頻保護的主程序、中斷服務(wù)程序和故障處理程序設(shè)計，軟硬件結(jié)合實現(xiàn)保護功能。 關(guān)鍵詞： 繼電保護 ； 微機保護 ； 高頻距離保護 ； 高頻零序保護 渤海船舶職業(yè)學(xué)院 畢業(yè)（論文） ） II Abstract In the electrical power system, the relay protection is guaranteed the electrical power system safe operation and improves the electrical energy quality, moreover, the electrical power system scale is expanding unceasingly, the user unceasingly is also enhancing to the electrical energy quality request. Therefore, more and more is also high to the relay protection request. The high frequency protection is 110kV and above transmission line host protection, also is the first defense line which the high tension line protects, can realize the nontime limit excision to the entire line fault, this is the high frequency protection significant merit, therefore, receives in the ultrahigh voltage electrical work stable measure intermediate frequency protection takes highly. This time design is the 110kV line microputer high frequency protection. This article first was brief introduced the electrical power system microputer relay protection development history, the present situation, the technical characteristic and the development direction. Then in detail elaborated the 110KV line microputer relay protection constitution as well as each part of principle of work, the design content including three major parts: Hardware circuit design, software part design and high frequency protection parameter putation and movement value installation. Hardware electric circuit mainly by CPU host system, data acquisition system, with switch quantity input/ output system constitution, the software design mainly includes the high frequency protection the master routine, the interrupt service and the breakdown disposal procedure design, the software and hardware union realization protection function. Key words： Relay protection； Microputer protection； High frequency distance protection； High frequency zero foreword protection 渤海船舶職業(yè)學(xué)院 畢業(yè)（論文） ） III 目 錄 第 1 章 緒 論 .......................................................................................................... 1 電力系統(tǒng)微機保護的概述和發(fā)展歷程 .................................................... 1 電力系統(tǒng)及微機保護概述 ........................................................... 1 微機保護的發(fā)展歷程 ................................................................... 1 國內(nèi)外關(guān)于該課題的研究現(xiàn)狀及趨勢 .................................................... 2 微機保護的發(fā)展方向 ................................................................................ 2 第 2 章 硬件部分設(shè)計 ............................................................................................ 3 總體設(shè)計方案 ............................................................................................ 3 數(shù)據(jù)采集系統(tǒng)設(shè)計 .................................................................................... 3 電壓形成 ......................................................................................... 3 采樣保持電路（ S/H） ................................................................... 4 有源濾波器的結(jié)構(gòu)及特點 ............................................................. 4 模擬多路開關(guān) ................................................................................. 5 模數(shù)轉(zhuǎn)換器（ A/D） ....................................................................... 6 微機主系統(tǒng) ................................................................................................ 6 (中央處理器 ) ............................................................................ 6 開關(guān)量輸入輸出回路 ..................................................................... 9 人機接口回路 ............................................................................... 11 跳閘回路設(shè)計 .......................................................................................... 11 第 3 章 高頻保護參數(shù)計算及動作值整定 .......................................................... 13 高頻保護概述 .......................................................................................... 13 高頻通道及其工作方式 .......................................................................... 13 高頻保護的算法 ...................................................................................... 14 傅里葉級數(shù)算法 ...................................................................................... 15 高頻距離參數(shù)計算及動作值整定 .......................................................... 17 高頻零序參數(shù)計算及動作值整定 ......................................................... 19 第 4 章 高頻保護軟件設(shè)計 .................................................................................. 21 高頻保護功能概述 .................................................................................. 21 高 頻保護程序設(shè)計 ................................................................................. 22 渤海船舶職業(yè)學(xué)院 畢業(yè)（論文） ） IV 高頻保護的主程序流程圖說明 ................................................... 22 高頻保護的中斷服務(wù)程序流程圖說明 ....................................... 25 高頻保護 的故障處理程序流程圖說明 ....................................... 28 振蕩閉鎖程序流程圖 ..................................... 錯誤 !未定義書簽。 第 5 章 結(jié) 論 ........................................................................................................ 38 參考文獻 ................................................................................................................ 39 致 謝 ...........................................................