GE D70320L-8

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描述

GE D70320L-8

狀態(tài)檢修試驗項目的確定
微機繼電保護的試驗分為兩種形式進行開展:診斷性試驗、例行試驗。其中診斷性試驗主要是指在繼電保護裝置進行巡視或巡檢過程中發(fā)現(xiàn)設(shè)備運行不正常、來自家族缺陷警告、連續(xù)長時間運行等為實現(xiàn)對設(shè)備運行狀態(tài)的進一步評估采取的試驗。例行試驗主要是指在設(shè)備保護停用狀態(tài)下進行的各種試驗,主要是為了獲得設(shè)備各運行狀態(tài)量,完成設(shè)備狀態(tài)的評估,當(dāng)設(shè)備存在安全隱患時及時消除。
繼電保護狀態(tài)檢修一般會通過采用SEL保護裝置、微機保護裝置等裝置實現(xiàn)各項信息的監(jiān)測,此外,為實現(xiàn)保護設(shè)備的在線監(jiān)測,要建立繼電保護設(shè)備設(shè)備狀況的監(jiān)控系統(tǒng),從而可實現(xiàn)遠程設(shè)備的監(jiān)測,實現(xiàn)設(shè)備運行狀況的分析和診斷。最后,根據(jù)監(jiān)測和分析診斷結(jié)果,確定設(shè)備的檢修時間和內(nèi)容的安排。
繼電保護狀態(tài)檢修與傳統(tǒng)的定期檢修方式不同,它更注重對設(shè)備的檢測結(jié)果為分析對象,實現(xiàn)對電器設(shè)備的維修和保護,這種檢修方式可以提高故障判斷的準(zhǔn)確率,降低設(shè)備運行成本,還可有效延長電器的使用壽命,因此各電力企業(yè)應(yīng)不斷加快該方式的運用。

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15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實力庫存商家


選擇深圳長欣,選擇放心,售后無憂大量現(xiàn)貨,當(dāng)天順豐發(fā)貨!
主營:本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機器人系統(tǒng)配件,大型伺服系統(tǒng)備件。

先介紹幾點經(jīng)驗。
1、先通讀一遍“系統(tǒng)手冊”(不管能不能看懂,先了解個大概,以便學(xué)習(xí)編程時查找);
2、由位控邏輯入手,逐漸增加定時、計數(shù)等條件,把或、與、非關(guān)系理順;
3、進而練習(xí)整數(shù)運算、實數(shù)運算、類型轉(zhuǎn)換;
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解(最好是有個物理回路驗證,比如變頻器+電機+測速傳感器);
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制(盡量避免跳轉(zhuǎn),非跳不可時也是跳的越近越好);
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌,由于PLC的基本框架大同小異,學(xué)會一種至于其它的學(xué)習(xí)起來也就簡單了。