【文章內(nèi)容簡(jiǎn)介】 ............................................................................................................................................. 17 69．自耦變壓器與普通變壓器有什么不同？ ...................................................................................................................................................... 17 70．自耦變壓器運(yùn)行中應(yīng)注意些什么問(wèn)題？ ...................................................................................................................................................... 18 71．變壓器調(diào)壓有哪凡種方式 ? ........................................................................................................................................................................ 18 72．什么是變壓器的過(guò)勵(lì)磁？變壓器的過(guò)勵(lì)磁是怎樣產(chǎn)生的 ? ............................................................................................................................. 18 73．變壓器的過(guò)勵(lì)磁可能產(chǎn)生什么后果？如何避免？ ......................................................................................................................................... 18 74．變壓器本體構(gòu)造有哪些安全保護(hù)設(shè)施？其主要作用是什么？ ........................................................................................................................ 18 75．電壓互感器和電流互感器各有什么特點(diǎn)？ ................................................................................................................................................... 19 76．氣體絕緣金屬封閉開(kāi)關(guān)設(shè)備 (GIS)的特點(diǎn)有哪些？ GIS 分為嘲幾種類型？ ......................................................................................................... 19 第五章繼電保護(hù)、安全自動(dòng)裝置及通訊自動(dòng)化 ............................................................................................................................................................ 19 1．繼電保 護(hù)裝置有什么作用？ ........................................................................................................................................................................ 19 2．繼電保護(hù)的基本原理和構(gòu)成方式是什么？ .................................................................................................................................................... 19 3．電力系統(tǒng)對(duì)繼電保護(hù)的基本要求是什么？ .................................................................................................................................................... 20 4．如 何保證繼電保護(hù)的可靠性？ ..................................................................................................................................................................... 20 5．為保證電網(wǎng)繼電保護(hù)的選擇性，上、下級(jí)電網(wǎng)繼電保護(hù)之間逐級(jí)配合應(yīng)滿足什么要求？ .................................................................................. 20 6．系統(tǒng)最長(zhǎng)振蕩周期一般按多少考慮？ ........................................................................................................................................................... 20 7． 22OkV 及以上電麗繼電保護(hù)整定計(jì)算的基本原則是什么？ ............................................................................................................................. 20 8．變壓器中性點(diǎn)接地方式的安排一般如何考慮？ .............................................................................................................................................. 20 9． 220kV 線路保護(hù)的配置原則是什么， ............................................................................................................................................................ 21 10． 330kV 廈 500kV 線路保護(hù)的配置原則是什么？ ............................................................................................................................................ 21 11．什么是”遠(yuǎn)后備168。殛“近后備”？ ............................................................................................................................................................. 21 12．線路縱聯(lián)保護(hù)及特點(diǎn)是什么？ ................................................................................................................................................................... 21 13．縱聯(lián)保護(hù)的通道可分為幾種類型？ ............................................................................................................................................................. 22 14．光纖通道作為縱聯(lián)保護(hù)通道的優(yōu)勢(shì)有哪些？ ............................................................................................................................................... 22 15．光纖分相電流差動(dòng)保護(hù)的基本原理是什么？ ............................................................................................................................................... 22 16．分相電流差動(dòng)保護(hù)有什么優(yōu)缺點(diǎn)？ ............................................................................................................................................................. 22 17．縱聯(lián)高頻保護(hù)啟動(dòng)后向?qū)?cè)發(fā)送哪些信號(hào)？ ............................................................................................................................................... 22 18．方向比較式高頻保護(hù)的基本原理是什么？ ................................................................................................................................................... 22 19．閉鎖式方向高頻保護(hù)的基本原理是什么？ ................................................................................................................................................... 22 20．高頻閉鎖距離保護(hù)的構(gòu)成原理是什么？ ...................................................................................................................................................... 23 21．線路主保護(hù)停用對(duì)重合閘 的使用有什么影響？ ............................................................................................................................................ 23 22．什么是零序保護(hù)？大電流接地系統(tǒng)中為什么要單獨(dú)裝設(shè)零序保護(hù)？ .............................................................................................................. 23 23．電力系統(tǒng)中采用遠(yuǎn)方跳閘的原因是什么？ ................................................................................................................................................... 23 24． 3/2 接線方式下啟動(dòng)遠(yuǎn)方跳閘的保護(hù)有哪些？ .............................................................................................................................................. 23 25．什么是就地判別裝置 7 其動(dòng)作判據(jù)有哪些？ ......................................................................................