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外文翻譯---基于單片機(jī)的油浸式變壓器溫度監(jiān)測(cè)系統(tǒng)的設(shè)計(jì)(存儲(chǔ)版)

  

【正文】 opted, pared and verified. For example, a thermometer was made use of to test the top oil temperature, and electric thermocouple for the winding temperature rising, and thermal resistance and infrared radiation thermometer for the oil temperature at different locations. It can be seen from and that the highest temperature is always on the winding, the temperature of mild transformer oil and box body reflects grad change and has a stepbystep rise, and the temperature change of transformer bottom oil is paratively slow. The experiment result is basically agreed with the simulation calculation value in ANSYS. According to the experimental results, there are some characters for the designed temperature monitoring system of power transformers: (a) Realtime acquisition, real time transferring by USB bus. It can also transfer the data to PC by USB after data collecting。對(duì)大型 油浸式變壓器 運(yùn)行狀態(tài)的實(shí)時(shí)溫度檢測(cè)和故障診斷而言,具有較廣 闊的應(yīng)用前景?;跍囟葓?chǎng)信息電力變壓器,本研究由 國(guó)家自然科學(xué)基金支持 并 探索了一種新的狀態(tài)監(jiān)測(cè)和故障診斷方式。此外,一個(gè)明顯的溫度升高會(huì) 在一些力量變 壓器發(fā)生故障前 形成。 硬件系統(tǒng)的設(shè)計(jì) 原理 如下:首先 外來(lái)信號(hào)經(jīng) 溫度傳感器( PT100 的,電熱電偶,光纖傳感器等)轉(zhuǎn)換 為 電壓信號(hào), 經(jīng)信號(hào)調(diào)整電路調(diào)整為標(biāo)準(zhǔn)信號(hào)范圍 ,并轉(zhuǎn)換成數(shù)字信號(hào)。USB 接口芯片選擇 DIUSBD12, PDIUSBD12 的簡(jiǎn)稱 為 “ D12 的” ?,支持復(fù)用,非多路復(fù)用和 DMA 轉(zhuǎn)讓,是一種實(shí)物并行接口芯片 ,是由 設(shè)計(jì)飛利浦公司 生產(chǎn) 。 5V 和其測(cè)量溫度范圍從 50到 200 度 。 [6]使用該軟件,范圍頻率響應(yīng)和相位頻率響應(yīng)可方便地找到,設(shè)計(jì)參數(shù)可容易調(diào)整。更何況,它能夠有機(jī)會(huì)參 與 或低速 傳送到 機(jī)內(nèi)的 RAM。 USB 接口電路 desigtUSB 接口電路 如圖 5 所示。(三)中斷服務(wù)程序,能進(jìn)行立即 中斷 。目前,第三方軟件廠商 已 提供了大量的驅(qū)動(dòng)程序生成工具,如 康博的 驅(qū)動(dòng)程序向?qū)?qū)動(dòng)程序。其工作裝置條件 是, 傳輸數(shù)據(jù)是否 有不正確的傳輸或 控制速度快, 以及是否有 可衡量的驅(qū)動(dòng)程序。 圖 8 中的實(shí)驗(yàn)線連接 圖 9 實(shí)驗(yàn) resultX 軸表示時(shí)間, Y 軸表示 在圖 9 中 , 不同的顏色曲線表明 在不同的地點(diǎn) 石油溫度的升高變化。 (三) 平行收集模式可以設(shè)置為 隨機(jī)抽樣 18 通道 。所設(shè)計(jì)的監(jiān)控系統(tǒng)已應(yīng)用到仿真實(shí)驗(yàn)電力升溫變壓器。北京為:北京航空航天大學(xué)和航天出版社, 2020 年, 11?112 [4] AD2O2204,數(shù)據(jù)手冊(cè),模擬裝置 [光盤 ]。研究開發(fā)技術(shù)的 USB 設(shè)備驅(qū)動(dòng)程序研究[J]。 2020 年 [3]周哩紅。分類和分析不同類型的變壓器故障的 處理。 (二) 用 一個(gè)鍵盤來(lái)控制其工作和液晶顯示數(shù)據(jù)。傳感器輸出線與監(jiān)測(cè)系統(tǒng) 連接 ,數(shù)據(jù)可以 變?yōu)?電腦屏幕上的時(shí)間 與溫度 。事實(shí)上,它只是一個(gè)應(yīng)用程序產(chǎn)生驅(qū)動(dòng) 精靈視窗控制表。 2)驅(qū) 動(dòng)程序 :雖然有許多標(biāo)準(zhǔn)接口 系統(tǒng)提供 此 功能, 但是 驅(qū)動(dòng)程序 的 編程還有一個(gè) 任務(wù) 是 USB 開發(fā)最困難的。二 USB 驅(qū)動(dòng)器設(shè)計(jì) 1)固件編程 :通常有三個(gè)部分之間的 USB 單片機(jī)固件:(一)初始化單片機(jī)和所有外圍電路(包 括 PDIUSBD12 的) 。 圖 5 單片機(jī)控制電路 圖 6 USB 接口電路 和復(fù)用地址數(shù)據(jù)總線模式。因?yàn)?USB 協(xié)議框架比較大,W77E58 中有 32 KB 閃存芯片 EPROM 的被選擇為微控制器。電容的選擇 要求 ,數(shù)值電容值 應(yīng)優(yōu)先考慮 。 T 標(biāo)引,是一種特殊的一電廠中的應(yīng)用。同步數(shù)據(jù)采樣芯片 選擇美心公司生產(chǎn)的 MAX125的 并在 電路設(shè)計(jì)中使 用 。該監(jiān)控系統(tǒng) 設(shè)計(jì)的 可以有效地監(jiān)測(cè)一些重點(diǎn)地區(qū)的溫度變化:如盒體,變壓器繞組,鐵心等等,它扮演了一個(gè)重要的控制作用,監(jiān)督變壓器的運(yùn)行情況。根據(jù)調(diào)查結(jié)果列于 圖 1,該油浸式變壓器 運(yùn)行的故障 主要包括過(guò)熱故障和放電高能量 的故障 。 但是, 它不能滿足檢查 電力變壓器 的要求。 Automation, , 23 27 基于單片機(jī)的 油浸式變壓器溫度監(jiān)測(cè)系統(tǒng) 的設(shè)計(jì) 錢蘇香,胡宏升 (中國(guó),大學(xué)浙江省嘉興市,機(jī)電系)電子郵箱 : 摘要 針對(duì)變壓器檢測(cè)系統(tǒng)在實(shí)時(shí)性,可靠性方面的要求以及 油浸式變壓器發(fā)生故障時(shí)會(huì)產(chǎn)生不同的熱效應(yīng),從而產(chǎn)生相應(yīng)位置的異常溫升的問(wèn)題,討論了基于嵌入式技術(shù)的大型變壓器溫度檢測(cè)和故障診斷系統(tǒng),詳細(xì)的介紹了基于單片機(jī)控制的 油浸式變壓器 溫度采集電路的硬件電路設(shè)計(jì)。s temperature rising variation, and electric thermocouple is used to measure winding39。s range, and are converted into digital signal, after general line transmission to MCU for storage and processing, simulation/digital converting rate can be controlled by MCU. The takeover data queen may exist temporarily in the extended RAM, or transfer to the puter by USB. At the same time, MCU connect keyboard and LCD for the purpose of manmachine exchange [2]. The systematic block diagram of hardware system is showed in . 1) Chips Selection: A/D module selectionMAX125In order to avoid additional phase difference in the process of the data collecting, the synchronism collecting technology must be guaranteed for different signals. A synchronize data sampling chip MAX125 the MAXIM pany produces is selected and used in the designed circuit. MAX125 is 2161。t meet the requirement of safe production. Due to different thermal effects led by the natural or factitious fault, its temperature of oilimmersed power transformers is easy to change abnormally. An online measuring and controlling system based on MCU is discussed in this paper. In order to satisfy the requirement of state monitoring and fault diagnosis of power transformer on realtime and reliability, a kind of intelligent online monitoring instrument is designed. Each of its part is explained in this paper, including temperature signal collecting and data processing system. The simulation result showed the designed system was good in its realtime, reliability and running cost. Therefore, the designed state monitoring system for temperature and fault diagnosis of power transformer can be widely used in engineering and is expected to bring a bright future. Key words 168。 C With the expansion of electric capacity and largescale extension of power grid, electric equipment is playing a significant role in modern life. At present, the technology of condition monitoring and fault diagnosing of power transformer has been made some improvement, yet its realtime performance and reliability still can39。s temperature variation: such as the box body, the transformer winding, the iron core, and so on and it plays a significant role in supervisory control to the operation situation of transformers. II. HARDWARE DESIGN A. Overall pl
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