發(fā)布時間：2018-12-13 23:27

【摘要】：隨著近年來國民經(jīng)濟的快速發(fā)展,整個社會對能源特別是電力方面的需求越來越大。電力設(shè)備在制造、運輸、安裝和運行中不可避免受到電場、熱場、機械應(yīng)力、化學(xué)腐蝕以及環(huán)境條件等因素的影響,導(dǎo)致絕緣系統(tǒng)的破壞,設(shè)備產(chǎn)生局部放電現(xiàn)象。據(jù)統(tǒng)計,我國電網(wǎng)中由于電氣設(shè)備故障而直接引發(fā)的電網(wǎng)事故約占事故總量的1/3,僅僅比雷電災(zāi)害少,而放電是造成電力設(shè)備絕緣系統(tǒng)惡化的主要因素,因此若能對高壓設(shè)備放電做到早發(fā)現(xiàn)、早處理,準確定位放電位置,對提高電網(wǎng)的安全穩(wěn)定運行具有十分重要的意義。論文對高壓設(shè)備的放電輻射機理進行了詳細的論述,并總結(jié)分析了高壓設(shè)備的放電特征,基于此又對目前國內(nèi)外高壓電氣設(shè)備放電檢測的方法進行了對比分析,總結(jié)歸納為電測法和非電測法,主要包括脈沖電流法、超聲波法、紅外成像法、超高頻法、基于紫外光信號法等。電測法容易受到一些電力磁場干擾,靈敏度低等缺點。論文在分析了高壓設(shè)備放電光譜特征之后,提出了基于日盲型紫外傳感器的紫外脈沖法的非電測法來進行放電檢測,有效避免了電力磁場干擾,同時也排除了太陽輻射等為外界光線干擾。論文設(shè)計了放電檢測系統(tǒng),硬件系統(tǒng)主要包括基于光電倍增管(PMT)R7154日盲紫外傳感器的工作電路、信號處理電路(包括I/U轉(zhuǎn)換、增益放大等)、數(shù)據(jù)采集卡USB_DAQ_PIC16F877_VO5對放電檢測數(shù)據(jù)進行采集和存儲電路、溫濕度采集電路(分別利用溫度傳感器DS18B20、濕度傳感器DHT11來實現(xiàn)溫度和濕度的采集)、模擬高壓設(shè)備放電及控制裝置等,并設(shè)計了檢測裝置工作平臺。針對各個硬件模塊設(shè)計了相應(yīng)的軟件部分來完成各自的功能,采用LABVIEW、MATLAB等軟件來實現(xiàn)數(shù)據(jù)采集、存儲、處理,并設(shè)計了簡單的用戶界面。論文在實驗室模擬了高壓設(shè)備放電來對系統(tǒng)的有效性進行了測試,結(jié)果表明該系統(tǒng)能夠有效地檢測高壓設(shè)備放電情況,具有較好的靈敏度和準確性,并對光信號與放電信號之間的關(guān)系進行了探討,達到了預(yù)期目標。
[Abstract]:With the rapid development of national economy in recent years, the whole society needs more and more energy, especially electricity. Electric power equipment is inevitably affected by electric field, thermal field, mechanical stress, chemical corrosion and environmental conditions in manufacture, transportation, installation and operation, which leads to the destruction of insulation system and partial discharge of equipment. According to statistics, the electric network accidents directly caused by electrical equipment failures in our country account for about 1 / 3 of the total number of accidents, only less than lightning disasters, and discharge is the main factor that causes the deterioration of electrical equipment insulation system. Therefore, it is of great significance to improve the safe and stable operation of the power network if the discharge of high-voltage equipment can be detected early, processed early, and accurately located. In this paper, the discharge radiation mechanism of high voltage equipment is discussed in detail, and the discharge characteristics of high voltage equipment are summarized and analyzed. Based on this, the discharge detection methods of high voltage electrical equipment at home and abroad are compared and analyzed. It includes pulse current method, ultrasonic method, infrared imaging method, ultra-high frequency method, ultraviolet light signal method and so on. The electric measurement method is easy to be interfered by some electric magnetic field, and its sensitivity is low. After analyzing the characteristics of discharge spectrum of high-voltage equipment, a non-electric method based on ultraviolet pulse method based on solar blind ultraviolet sensor is proposed to detect the discharge, which effectively avoids the interference of electric magnetic field. At the same time also excluded the solar radiation and other external light interference. In this paper, a discharge detection system is designed. The hardware system mainly includes the working circuit based on photomultiplier tube (PMT) R7154 blind ultraviolet sensor, the signal processing circuit (including I / U conversion, gain amplification and so on). The data acquisition card (USB_DAQ_PIC16F877_VO5) collects and stores the discharge detection data, and the temperature and humidity acquisition circuit (using the temperature sensor DS18B20, humidity sensor DHT11 respectively to realize the temperature and humidity acquisition), The discharge and control devices of high voltage equipment are simulated, and the working platform of detection device is designed. The corresponding software is designed for each hardware module to complete their respective functions. LABVIEW,MATLAB and other software are used to achieve data acquisition, storage, processing, and a simple user interface is designed. This paper simulates the discharge of high-voltage equipment in laboratory to test the effectiveness of the system. The results show that the system can effectively detect the discharge of high-voltage equipment, and has good sensitivity and accuracy. The relationship between the optical signal and the discharge signal is discussed and the expected goal is achieved.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM83;TN23

【相似文獻】

相關(guān)期刊論文 前10條

1 П.М.Сви;張古銀;;工作電壓下高壓電氣設(shè)備的監(jiān)測[J];變壓器;1983年12期

2 陳小富;;關(guān)于高壓電氣設(shè)備試驗與安全管理的探討[J];科技致富向?qū)?2014年14期

3 余振杰;;小議高壓電氣設(shè)備試驗與安全管理[J];沿海企業(yè)與科技;2009年08期

4 盧瑛;吳國忠;;智能型高壓電氣設(shè)備溫度監(jiān)測預(yù)警系統(tǒng)[J];中國電力;2010年03期

5 喻虹;寇松彬;;淺談高壓電氣設(shè)備的故障機理和監(jiān)測技術(shù)[J];科技傳播;2010年16期

6 吉亞民;;江蘇并網(wǎng)電廠主要高壓電氣設(shè)備運行異常分析[J];江蘇電機工程;2011年05期

7 韋紅云;;高壓電氣設(shè)備維護營銷對策探析[J];廣西電業(yè);2013年Z1期

8 李鳳軍;;關(guān)于高壓電氣設(shè)備試驗的重要性與相關(guān)技術(shù)問題的探討[J];電工文摘;2013年03期

9 楊能益;;清潔高壓電氣設(shè)備的新材料——玉米棒顆粒[J];電工技術(shù);1989年06期

10 張國慶;楊源龍;劉躍凱;;檢測運行高壓電氣設(shè)備過熱隱患的研究[J];華北電力技術(shù);1991年10期

相關(guān)會議論文 前3條

1 張樹榆;田森;;討論高壓電氣設(shè)備選型及校驗[A];天津市電視技術(shù)研究會2014年年會論文集[C];2014年

2 雷鳴;;高壓電氣設(shè)備內(nèi)部缺陷的紅外診斷研究[A];第三屆廣西青年學(xué)術(shù)年會論文集（自然科學(xué)篇）[C];2004年

3 彭玉林;李紅軍;劉楠;李亭;;SF_6氣體水分管理標準探討及密度濕度監(jiān)測的研究[A];2008年云南電力技術(shù)論壇論文集[C];2008年

相關(guān)博士學(xué)位論文 前1條

1 李亞琦;電瓷型高壓電氣設(shè)備體系抗震性能分析[D];中國地震局地球物理研究所;2002年

相關(guān)碩士學(xué)位論文 前8條

1 張慧浩;基于光纖傳感技術(shù)的高壓電氣設(shè)備溫變故障監(jiān)測預(yù)警系統(tǒng)[D];河北科技大學(xué);2015年

2 潘輝;基于紫外光信號的高壓電氣設(shè)備放電檢測研究[D];重慶大學(xué);2015年

3 韓京津;基于光纖傳感技術(shù)的高壓電氣設(shè)備溫度監(jiān)測預(yù)警系統(tǒng)[D];河北科技大學(xué);2013年

4 楊長青;基于地震動參數(shù)高壓電氣設(shè)備的易損性分析[D];中國地震局工程力學(xué)研究所;2011年

5 武建華;基于紫外成像的高壓電氣設(shè)備外絕緣檢測的研究[D];華北電力大學(xué)（河北）;2008年

6 劉敏;GIS高壓電氣設(shè)備抗震性能試驗研究[D];西安建筑科技大學(xué);2013年

7 闞長遠;變壓器和六氟化硫開關(guān)四種典型故障分析[D];華北電力大學(xué);2014年

8 秦國防;分散型高壓電氣設(shè)備溫度巡回監(jiān)測系統(tǒng)的研制[D];重慶大學(xué);2006年

，

本文編號：2377450