某電廠2號機組非全相保護動作原因分析 

楊紅 
(重慶水利電力職業(yè)技術(shù)學(xué)院，重慶 402160) 
 

摘 要： 針對某電廠2 號發(fā)電機組C 級檢修后，由于非全相保護誤動而造成機組無法順利并網(wǎng)事件，介紹了事件發(fā)生經(jīng)過及事故檢查處理的過程，分析了該事件發(fā)生的可能原因，提出了改進并網(wǎng)開關(guān)合閘控制回路設(shè)計，加強并網(wǎng)開關(guān)分合閘同期性檢查及液壓操動機構(gòu)油回路暢通檢查，補充規(guī)范并網(wǎng)開關(guān)傳動試驗管理細則等防止類似事故發(fā)生的預(yù)防措施，為發(fā)電機組運行檢修工作提供了借鑒和參考。
關(guān)鍵詞： 發(fā)電機組；非全相保護；并網(wǎng)；預(yù)防措施
中圖分類號：TM762.2+5 文獻標(biāo)識碼：B 文章編號：1007-3175(2014)05-0039-03

Analysis on Open-Phase Protection Action of Unit 2 in Certain Power Plant 

YANG Hong 
（Chongqing Water Resources and Electric Engineering College, Chongqing 402160, China） 
 

Abstract: Aiming at the event that after grade C overhaul of unit 2, the units was unable to connect to the grid because of the open phase protection misoperation, this paper introduced the taking place process and trouble shooting process of the event, analyzed the possible cause of the event and raised the making control circuit design of improving the grid connection switches, strengthening the corresponding period checking of the grid connection switches making and breaking and the unblocked examination of hydraulic operating mechanism oil circuits and supplying the regulation of the grid connection switches transmission test management details etc measures to prevent similar accident from taking place.
       Key words: generator set; open-phase protection; grid connection; precautionary measures

參考文獻
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