描述
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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