110KV線路微機(jī)距離保護(hù)系統(tǒng)設(shè)計(jì)

電氣自動化論文編號:ZD307  論文字?jǐn)?shù):17410,頁數(shù):56 

 
 目 錄
 第1章 緒 論 1
1.1 微機(jī)繼電保護(hù)的歷史背景 1
1.2 微機(jī)繼電保護(hù)的現(xiàn)狀 2
1.3 微機(jī)繼電保護(hù)的發(fā)展方向 4
 第2章 110KV線路微機(jī)距離保護(hù)系統(tǒng)設(shè)計(jì) 5
2.1數(shù)據(jù)采集系統(tǒng)設(shè)計(jì) 5
 2.1.1 ADC原理模數(shù)變換器 6
 2.1.2 數(shù)據(jù)采集系統(tǒng)方案 6
2.2 CPU主系統(tǒng)設(shè)計(jì) 8
 2.2.1 微處理器 8
 2.2.2 存儲器 9
 2.2.3 兩路開出回路 11
 2.2.4 六路開出回路 11
 2.2.5 CPU的開入量 11
2.3 開關(guān)量輸入/輸出回路設(shè)計(jì) 11
 2.3.1 開關(guān)量輸入回路 11
 2.3.2 開關(guān)量輸出回路 12
2.4 跳閘出口電路及邏輯等電路設(shè)計(jì) 14
 2.4.1 跳閘出口電路 14
 2.4.2 邏輯電路 15
 第3章 110KV線路微機(jī)距離保護(hù)相關(guān)計(jì)算 17
3.1 距離保護(hù)的原理 17
圖3.1  距離保護(hù)原理圖 17
3.2 三段相間距離保護(hù)參數(shù)計(jì)算及動作值整定 18
3.3 三段接地距離保護(hù)參數(shù)計(jì)算及動作值整定 21
 第4章 110KV線路微機(jī)距離保護(hù)流程圖 28
4.1 主程序流程圖 28
 4.1.1 初始化 28
 4.1.2 自檢 28
4.2 中斷服務(wù)程序流程圖 30
 4.2.1 電流電壓求和自檢功能 30
 4.2.2 不對應(yīng)工作狀態(tài) 30
4.3 故障處理程序流程圖 32
 4.3.1 電壓電流求和自檢出錯時告警 32
 4.3.2 手和于故障線路 32
 4.3.3 方向元件 32
 第5章 結(jié)論 34
 參考文獻(xiàn) 35
 致 謝 36
 附 錄1 程序清單 37
 附 錄2 原理圖 44

摘 要
 110KV線路微機(jī)距離保護(hù)是通過微機(jī)保護(hù)裝置來實(shí)現(xiàn)對輸電線路的監(jiān)控，微機(jī)保護(hù)裝置包括數(shù)據(jù)采集系統(tǒng)、CPU主系統(tǒng)、開關(guān)量輸入/輸出回路、跳閘出口電路及邏輯電路。其中CPU主系統(tǒng)包含微處理器、存儲器及相映接口。通過模數(shù)轉(zhuǎn)換器ADC將信號傳送給CPU主系統(tǒng)，然后由主系統(tǒng)判斷線路是否發(fā)生故障。如有故障，CPU主系統(tǒng)發(fā)出跳閘命令，使110KV輸電線路的安全運(yùn)行得到保障。此外，說明了三段距離保護(hù)的工作原理，對三段相間距離保護(hù)參數(shù)進(jìn)行了計(jì)算及動作值整定和三段接地距離保護(hù)參數(shù)計(jì)算及動作值整定。驗(yàn)證了110KV微機(jī)距離保護(hù)的三段式距離保護(hù)。還設(shè)計(jì)了系統(tǒng)工作的流程圖及相關(guān)流程圖工作原理的說明，其中主程序包括初始化和自檢兩個主要部分使主程序能更好的配合中斷程序和故障程序，編寫了相關(guān)距離保護(hù)的主程序、距離保護(hù)中斷服務(wù)程序設(shè)計(jì)、距離保護(hù)故障處理程序設(shè)計(jì)。通過微機(jī)保護(hù)裝置的設(shè)計(jì)、三段距離保護(hù)的計(jì)算和相關(guān)程序的設(shè)計(jì)使整個系統(tǒng)有機(jī)的結(jié)合起來，實(shí)現(xiàn)了110KV線路微機(jī)距離保護(hù)。
 關(guān)鍵詞：距離保護(hù)；三段相間距離保護(hù)參數(shù)計(jì)算；數(shù)據(jù)采集系統(tǒng)；中斷服務(wù)程序
 
 
Abstract
110KV lines from the computer through the protection of computer protection equipment to achieve the monitoring of transmission lines, computer protection equipment, including data collection system, CPU main system, switching of input / output circuit, tripping circuit exports and logic circuits. CPU main system which includes microprocessors, memory and Xiangying interface. By ADC ADC signal sent to the main system CPU, and then from the main system judge whether a fault line. If there is fault, CPU tripping the main system issued an order, the 110 KV transmission lines to the safe operation of protection. In addition, three of the distance that the protection of the working principle, the three-phase distance protection parameters were calculated and determined action of the whole earth and three from the protection of parameters and action of the entire set. Computer verification of the 110 KV from the protection of the Three-stage distance protection. Also designed the system work flow chart and related flow chart of the principle that one main program, including initialization and self-inspection of two major part of the main program to better cope with the disruption procedures and fault procedures, the preparation of the relevant distance protection The main program, suspended from the service program designed to protect from the failure to protect the design process. Computer protection through the design, three from the protection of computing and related procedures designed so that the whole system of combining organic and achieve a 110 KV line from the computer protection.
 
 Key words：Distance Protection; Three-phase distance protection parameters; Data Acquisition System; Interrupted service program