【正文】 ..................................9 微機(jī)系統(tǒng) .....................................................................................................................9 開關(guān)量輸入輸出回路 ...............................................................................................10 人機(jī)對(duì)話接口回路 ...................................................................................................10 通信回路 ...................................................................................................................10 電源 ..........................................................................................................................10 變電站綜合自動(dòng)化系統(tǒng)的硬件結(jié)構(gòu)形式 ....................................................................10 集中式綜合自動(dòng)化系統(tǒng) ..........................................................................................10 分層分布式結(jié)構(gòu)集中式組屏綜合自動(dòng)化系統(tǒng) .......................................................11 變壓器的保護(hù)與測控子系統(tǒng) ........................................................................................12 電力變壓器微機(jī)保護(hù)的配置 ...................................................................................12 電力變壓器比率制動(dòng)式差動(dòng)保護(hù) ...........................................................................12 電力變壓器后備保護(hù) ...............................................................................................13 變壓器危機(jī)監(jiān)控、保護(hù)裝置舉例 ...........................................................................13 輸電線路的保護(hù)與測控子系統(tǒng) ....................................................................................14第三章 數(shù)字變電站主要技術(shù)特征和架構(gòu)體系 ....................................................................15 數(shù)字變電站的主要技術(shù)特征 ........................................................................................15 數(shù)據(jù)采集數(shù)字化 ......................................................................................................15 系統(tǒng)分層分布化 ......................................................................................................15 系統(tǒng)結(jié)構(gòu)緊湊化 ......................................................................................................16 系統(tǒng)建模標(biāo)準(zhǔn)化 ......................................................................................................17 信息交互網(wǎng)絡(luò)化 ......................................................................................................18 信息應(yīng)用集成化 ......................................................................................................18 設(shè)備檢修狀態(tài)化 ......................................................................................................18 設(shè)備操作智能化 .......................................................................................................19 數(shù)字化變電站的結(jié)構(gòu)體系 ............................................................................................19 基本結(jié)構(gòu) ..................................................................................................................19 變電站二次回路通信模式 ......................................................................................21 過程總線的組網(wǎng)方式 ..............................................................................................22 變電站總線的組網(wǎng)方式 ..........................................................................................22 系統(tǒng)的冗余性 ..........................................................................................................23 對(duì)變電站二次系統(tǒng)的影響 ............................................................................................24 一、二次系統(tǒng)實(shí)現(xiàn)有效的電氣隔離 ......................................................................24 信息交互采取對(duì)等通信模式 ..................................................................................24 信息同步采取網(wǎng)絡(luò)同步機(jī)制 ..................................................................................25 系統(tǒng)的可觀性和可控性提高 ...................................................................................25 信息的安全性問題凸現(xiàn) ..........................................................................................25第四章 非常規(guī)互感器和傳統(tǒng)互感器的比較 ........................................................................27 傳統(tǒng)互感器的原理 .........................................................................................................27 電磁式電流互感器 ...................................................................................................27 電磁式電壓互感器 ...................................................................................................27 傳統(tǒng)互感器存在的問題 .................................................................................................27 電磁式電壓互感器存在的問題 ...............................................................................27 電磁式電流互感器存在的問題 ...............................................................................28 非常規(guī)互感器原理及其特點(diǎn) .........................................................................................28 電子式互感器原理 ...................................................................................................28 光電式電流互感器原理 ...........................................................................................29 非常規(guī)互感器的基本特點(diǎn) .......................................................................................29第五章 變電站數(shù)字化改造綜述 ............................................................................................30 變電站數(shù)字化改造的必要性 .........................................................................................30 變電站數(shù)字化改造的可行性 .........................................................................................30 改造后數(shù)字化變電站的特點(diǎn)和優(yōu)勢 .............................................................................30第六章 變電站現(xiàn)狀及改造內(nèi)容 ..........................................................................................32 變電站現(xiàn)狀 ....................................................................................................................32 一次部分 ...................................................................................................................32 二次部分 ....................................................................................................