發(fā)布時間：2018-01-24 02:02

  本文關鍵詞： 電弧故障檢測裝置 自動測試 AFDD試驗 分斷時間 數(shù)據(jù)采集　出處：《杭州電子科技大學》2015年碩士論文　論文類型：學位論文

【摘要】：電弧故障檢測裝置(arc fault detection devices簡稱AFDD)是一種新型電器保護裝置,主要用于預防電弧故障引起的火災。因電弧故障的發(fā)生與電路中電流大小沒有必然關系,電路中的過流保護裝置不能有效防止電弧故障引發(fā)火災,如果將AFDD串聯(lián)至電路中,就能及時發(fā)現(xiàn)電弧故障并斷開回路,從而避免火災的發(fā)生。在AFDD產(chǎn)品的試驗測試中,因為試驗類型比較多,人工操作每次測試都必須對照測試規(guī)范進行操作,不但浪費時間而且容易出現(xiàn)誤操作。本論文研究開發(fā)軟件控制的AFDD自動測試系統(tǒng),可以很好地解決以上問題。本論文開發(fā)的自動測試系統(tǒng)硬件上主要由工控機/工控卡和試驗電路組成,工控機上的測試軟件按照AFDD產(chǎn)品的相關要求,通過工控卡控制試驗電路中的繼電器開關自動按序斷開或閉合,對AFDD產(chǎn)品執(zhí)行各個相應的試驗步驟。試驗過程中測試軟件一直采集試驗電路的電流數(shù)據(jù),直到AFDD裝置斷開電路時自動停止采集,并通過軟件示波器顯示波形,從而能通過觀測試驗電路的電流變化波形得出AFDD分斷時間,判斷AFDD產(chǎn)品功能是否符合產(chǎn)品相關標準要求。整個自動測試系統(tǒng)可快速、準確、自動地進行試驗并對AFDD產(chǎn)品的性能進行評估。試驗電路可以通過不同的繼電器開關及順序(試驗步驟),模擬出各種負載情況和電弧故障發(fā)生情況,因此在試驗電路內(nèi)不接入待測AFDD產(chǎn)品的情況下,其電弧故障特征數(shù)據(jù)對電弧故障檢測算法研究是十分有用的。如果能夠采集并記錄這些數(shù)據(jù),可為算法研究積累大量的原始數(shù)據(jù),形成電弧數(shù)據(jù)庫。因此,本文還設計了數(shù)據(jù)采集終端,將數(shù)據(jù)采集終端接入自動測試系統(tǒng)中,使本文設計的自動測試系統(tǒng)具備電弧故障特征數(shù)據(jù)采集功能:工控機上的測試軟件通過工控卡控制試驗電路中的繼電器開關及開關順序,控制執(zhí)行每一項試驗,由數(shù)據(jù)采集終端將試驗電路的電流信號轉(zhuǎn)變?yōu)槎鄠�電弧故障特征信號并對這些信號采集,以建立用于電弧故障檢測算法研究的電弧數(shù)據(jù)庫。論文完成的主要工作有:(1)設計了AFDD自動測試系統(tǒng)的結構,將其分為自動測試系統(tǒng)主體和數(shù)據(jù)采集終端兩個部分。(2)完成了自動測試系統(tǒng)主體部分試驗電路的設計,包括負載的接入方式,實現(xiàn)負載共用的方法,互斥開關的設計,以及試驗器材的選擇等。(3)完成了自動測試系統(tǒng)主體部分測試軟件的設計,包括操作和顯示界面、試驗電路繼電器開關控制、試驗電路電流采集與波形顯示。(4)完成了數(shù)據(jù)采集終端硬件和軟件設計,數(shù)據(jù)采集終端將單一的電流信號變換為多個通道的電弧故障特征信號,對多個通道同時采集,并以二進制流的格式將這些電弧故障特征數(shù)據(jù)實時存儲到SD卡上,存儲到SD卡上的二進制文件數(shù)據(jù)可通過文件格式轉(zhuǎn)換工具轉(zhuǎn)換為一定結構的文本文件,從而方便進行數(shù)據(jù)分析及算法數(shù)據(jù)的讀取。對AFDD自動測試系統(tǒng)的實際測試表明,該系統(tǒng)能夠完成預期的AFDD產(chǎn)品測試和電弧故障特征數(shù)據(jù)采集的功能。
[Abstract]:Arc fault detection device (arc fault detection devices AFDD) is a new type of electrical protection devices, mainly used to prevent arcing fault caused the fire. Because of the size of current and arc fault in the circuit is not necessarily related, in the circuit overcurrent protection device can effectively prevent the arc fault caused a fire, if the AFDD series circuit to that can detect arc fault and disconnect the circuit, so as to avoid the occurrence of fire. In the testing of AFDD products, because the test type, manual operation of each test must control test specification for operation, not only a waste of time and prone to misoperation. The research and development of automatic test system software control AFDD, can solve the above problems. The hardware of automatic test system developed in this paper mainly by IPC / control card and test circuit, IPC test software in accordance with the relevant requirements of AFDD products, through the relay switch control circuit of the automatic test card in order to open or close to AFDD, the corresponding product implementation of test procedures. The test process test software has been collecting the test circuit of current data acquisition, automatic stop device disconnect circuit until AFDD when, and through the software oscilloscope waveform, which can change current through the observation circuit waveform obtained AFDD breaking time, determine the functions of AFDD products are in conformity with the requirements of product related standards. The automatic test system can quickly, accurately and automatically test and evaluate the performance of AFDD products. The test circuit through the relay switch and different order (step test), to simulate the load and arc fault occurs, so do not access in the test circuit in test AFDD The product under the condition of the arc fault data of arc fault detection algorithm is very useful. If you can collect and record the data, can accumulate a lot of data for the research on the algorithm of arc forming database. Therefore, this paper also designed the data acquisition terminal, the data acquisition terminal automatic test system. The automatic test system is designed in this paper has the characteristics of arc fault data acquisition function: test software of IPC on card relay switch and sequence control in the test circuit by computer control, executing every test, by the data acquisition terminal will change the current signal test circuit for multiple arc fault signal and the signal acquisition, to establish database research for arc arc fault detection algorithm. The main works include: (1) the design of automatic test system AFDD The structure of the automatic test system and the data collection terminal main body two parts. (2) completed the design of the main part of the test circuit automatic test system, including the access mode of the load, the load sharing method, design exclusive switch, and test equipment selection (3) completed the design. The main part of the test software automatic testing system, including the operation and display interface circuit test, relay switch control, waveform acquisition and test circuit of current display. (4) completed the design of the terminal hardware and software of data acquisition, data acquisition terminal current signal transform single arc fault characteristic signals of a plurality of channels, at the same time of acquisition a plurality of channels, and a binary stream format the arc fault feature data storage to the SD card, stored in a binary file data on the SD card through the file format conversion tool The text file is converted to a certain structure, so as to facilitate data analysis and algorithm data reading. The actual test of AFDD automatic test system shows that the system can accomplish the expected AFDD product test and arc fault feature data acquisition function.

【學位授予單位】：杭州電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM501.2

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本文編號：1458863