【正文】 3理解水樹放電機(jī)理，分析水樹枝引起的XLPE 絕緣老化特征，提出有效的電纜絕緣在線檢測方法。2. 此任務(wù)書最遲必須在畢業(yè)設(shè)計（論文）開始前一周下達(dá)給學(xué)生?？偨Y(jié)課題，完成畢業(yè)設(shè)計論文的寫作，并通過畢業(yè)論文答辯。課題任務(wù)要求⑴ 分析電纜故障的原因、故障性質(zhì)和分類；⑵ 電纜故障檢測與故障測距方法；⑶ 提出有效的電纜絕緣在線檢測及診斷方法；⑷設(shè)計電力電纜在線檢測系統(tǒng)，對故障檢測波形分析算法進(jìn)行仿真。如不夠填寫，可另加頁。2翻譯英文文獻(xiàn)、寫出開題報告。6總結(jié)所做工作，撰寫論文。3. “完成任務(wù)情況”一檔應(yīng)按學(xué)生是否按進(jìn)度保質(zhì)保量完成任務(wù)的情況填寫。3. 修改稿（經(jīng)、管、文法類專業(yè)）按順序裝訂成一本。但是，電纜一旦發(fā)生故障，查找困難,延遲恢復(fù)供電，為了保證電纜運行安全和快速診斷、修復(fù)故障，對電纜進(jìn)行故障診斷與監(jiān)測具有重要意義。關(guān)鍵詞： 電力電纜；絕緣；故障檢測；在線檢測電力電纜絕緣試驗與故障檢測方法研究POWER CABLE FAULT DETECTION AND DIAGNOSISAbstractWith the development and expansion of network, cable in the power system more andmore widely. However, the cable in the event of failure to find difficulties, delayedresumption of power supply cables in order to ensure the safe operation and rapid diagnosis,and repair faults on the cable fault diagnosis and monitoring of great significance.This topic discusses the causes of cable failure and characteristics of the cable line faultclassification, cable line fault to determine the general steps and methods, offline powercable fault detection。 Diagnosis電力電纜絕緣試驗與故障檢測方法研究目 錄1 緒論 .................................................................. 1 課題背景及目的 ..................................................... 1 本文的研究內(nèi)容..................................................... 22 電力電纜絕緣結(jié)構(gòu)與其故障............................................... 3 電力電纜絕緣結(jié)構(gòu) ................................................... 3 電力電纜線路故障原因 ............................................... 3 機(jī)械損傷....................................................... 3 絕緣受潮 ....................................................... 4 絕緣老化 ....................................................... 4 過電壓 ......................................................... 4過熱 ......................................................... 5 產(chǎn)品質(zhì)量缺陷................................................... 5 設(shè)計不良 ....................................................... 5. 電力電纜故障類型及分類 ............................................ 5 接地故障 ....................................................... 6 短路故障 ....................................................... 6 斷線故障 ....................................................... 6 閃絡(luò)性故障 ..................................................... 6 混合性故障 ..................................................... 63 電力電纜絕緣預(yù)防性試驗 ................................................ 6 絕緣電阻測量 ....................................................... 7 直流耐壓試驗 ....................................................... 7 泄漏電流試驗 ....................................................... 8 其它試驗方法 ....................................................... 8 殘余電壓法 ..................................................... 8 反向吸收電流法 ................................................. 9電力電纜絕緣試驗與故障檢測方法研究4 電力電纜絕緣老化 .................................................. 10 電纜絕緣老化原因 .................................................. 10 電老化 ........................................................ 10 熱老化 ........................................................ 10 機(jī)械老化 ...................................................... 11 環(huán)境老化 ...................................................... 11 絕緣老化主要表現(xiàn)樹枝化 ........................................ 11 電樹枝 ........................................................ 11 水樹枝 ........................................................ 125電力電纜故障在線檢測方法 ............................................ 13 直流分量法........................................................ 13 直流疊加法........................................................ 14 交流疊加法........................................................ 14 差頻法............................................................ 156 電力電纜的故障測距與定點方法 ......................................... 17 確定故障性質(zhì) ...................................................... 17 粗測距離.......................................................... 17 經(jīng)典法（電橋法） .............................................. 17 現(xiàn)代法（脈沖反射法） .......................................... 19 低壓脈沖反射法 ................................................ 19 脈沖電壓法 .................................................... 20 脈沖電流法 .................................................... 20 二次脈沖法 .................................................... 21 探測路徑或鑒別電纜 ................................................ 22 精測定點.......................................................... 22 聲測定點法 .................................................... 22 聽測方法 ...................................................... 23 感應(yīng)法 ........................................................ 24電力電纜絕緣試驗與故障檢測方法研究 裸露電纜故障的特殊定點方法 ........................................ 25 局部過熱法 .................................................... 26.................................................... 2跨步電壓法................................................... 26 電力電纜外護(hù)層絕緣故障的測尋 ...................................... 27 測距............................................................ 27 定點............................................................ 28 低壓電力電纜故障探測 .............................................. 29 超高壓電力電纜故障的探測 .......................................... 297 電力電纜故障仿真 ..................................................... 32 電力系統(tǒng)仿真軟件介紹 .............................................. 32 電纜故障檢測波形算法仿真 .......................................... 33 短路性故障仿真 ................................................ 33 開路性故障仿真 ................................................ 34 首段及其附近故障點的仿真 ...................................... 36 電纜故障波形仿真 ........