本文選題：電力電纜 + 小波分析　； 參考：《西南交通大學(xué)》2014年碩士論文

【摘要】：電力電纜具有節(jié)約用地,可靠性高,環(huán)境影響小,維護(hù)工作量少等特征,因此得到了廣泛應(yīng)用。隨著鐵路建設(shè)進(jìn)程的加快,電纜線路在鐵路電力供電系統(tǒng)中的比例日益增加,電纜故障幾率也隨之增大,對(duì)正常的生產(chǎn)和生活帶來較大影響。從而,使得不斷開發(fā)、應(yīng)用更先進(jìn)、更準(zhǔn)確的電纜線路故障測(cè)距技術(shù)進(jìn)行故障定位受到越來越多的重視。 本文從鐵路工程實(shí)際出發(fā),結(jié)合電力電纜故障類型及原因分析,應(yīng)用先進(jìn)的行波測(cè)距原理及小波分析技術(shù)來進(jìn)行電力電纜的故障測(cè)距。 論文首先對(duì)國內(nèi)外電力電纜故障定位技術(shù)進(jìn)行了簡(jiǎn)要介紹,對(duì)電纜故障類型及其成因進(jìn)行了詳細(xì)闡述,分析了安裝和施工質(zhì)量、外力破壞、電纜及其附件質(zhì)量等產(chǎn)生故障的因素。在此基礎(chǔ)上,應(yīng)用行波測(cè)距技術(shù)和小波變換理論,對(duì)脈沖電流測(cè)距法進(jìn)行了深入分析；搭建了脈沖電流測(cè)距法測(cè)距系統(tǒng)硬件,并對(duì)相應(yīng)硬件進(jìn)行了設(shè)備選型及功能設(shè)定,即采用雙通道數(shù)字存儲(chǔ)卡作為數(shù)據(jù)采集單元,羅戈夫斯基線圈結(jié)構(gòu)作為線性電流耦合器,穩(wěn)定可靠的工控機(jī)作為顯示、數(shù)據(jù)運(yùn)算、輸出及交互終端。在獲得可靠數(shù)據(jù)的基礎(chǔ)上,結(jié)合軟件工程技術(shù),設(shè)計(jì)了故障定位系統(tǒng)軟件,通過軟件系統(tǒng)和軟硬件的綜合調(diào)試,完成了數(shù)據(jù)分析與具體實(shí)現(xiàn)。 最后,將該裝置應(yīng)用于實(shí)際工程中,并對(duì)現(xiàn)場(chǎng)測(cè)得故障位置數(shù)據(jù)和實(shí)際故障位置進(jìn)行了對(duì)照分析,誤差小于2.2%,達(dá)到預(yù)期目標(biāo),說明該裝置滿足精度要求�，F(xiàn)場(chǎng)案例驗(yàn)證了該電纜故障定位系統(tǒng)的可行性,為鐵路電力供電系統(tǒng)的電力電纜故障定位提供了實(shí)踐和理論參考依據(jù)。
[Abstract]:Power cable is widely used because of its advantages of saving land, high reliability, low environmental impact and less maintenance workload. With the speeding up of railway construction, the proportion of cable line in railway power supply system is increasing day by day, and the probability of cable fault increases, which has great influence on normal production and life. Therefore, more and more attention has been paid to fault location of cable line fault location technology. Based on the actual situation of railway engineering, combined with the fault type and reason analysis of power cable, the advanced traveling wave location principle and wavelet analysis technique are applied to fault location of power cable. Firstly, the paper briefly introduces the fault location technology of power cable at home and abroad, expounds the types of cable faults and their causes in detail, analyzes the installation and construction quality, and external force damage. Cable and its accessories quality and other causes of failure. On this basis, using traveling wave ranging technology and wavelet transform theory, the pulse current ranging method is deeply analyzed, the hardware of the pulse current ranging system is built, and the equipment selection and function setting of the corresponding hardware are carried out. The dual channel digital memory card is used as the data acquisition unit, the Rogowski coil structure is used as the linear current coupler, and the stable and reliable industrial control computer is used as the display, data operation, output and interactive terminal. On the basis of obtaining reliable data and combining with software engineering technology, the software of fault location system is designed. Through the comprehensive debugging of software system and hardware and software, the data analysis and concrete realization are completed. Finally, the device is applied to practical engineering, and the fault location data measured in the field are compared with the actual fault location. The error is less than 2.2, and the expected goal is achieved, which shows that the device meets the precision requirements. Field cases verify the feasibility of the cable fault location system and provide a practical and theoretical reference for the power cable fault location of railway power supply system.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM75

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本文編號(hào)：1908912