【正文】 3 小結(jié) 論文首先介紹 lOkV配電網(wǎng)各種典型的接線模式和國(guó)外幾個(gè)國(guó)家的典型接線模式，然后確定配電網(wǎng)接線模式分析的思路，明確進(jìn)行分析的必要性和重要性。 然后，本文對(duì) lOkV配電網(wǎng)中性點(diǎn)諧振接地方式的運(yùn)行特性進(jìn)行了研究和介紹。要提高供電網(wǎng)絡(luò)的可靠性就必須增加網(wǎng)絡(luò)建設(shè)投資成本。 and e Iamp。一般在電壓等級(jí)較高的系統(tǒng)中，絕緣費(fèi)用在設(shè)備總價(jià)格中占相當(dāng)大的比重，降低絕緣水平帶來(lái)的經(jīng)濟(jì)效益很顯著，通常就采用中性點(diǎn)直接接地的方式，而采用自動(dòng)重合閘來(lái)保證供電可靠性 :相反，在電壓等級(jí)較低的系統(tǒng)中，通常都采用中性點(diǎn)不接地的方式來(lái)提高供電可靠性。 lOkV配電網(wǎng)是連接供電電源與工業(yè)、商業(yè)及生活用電的樞紐，其網(wǎng)絡(luò)龐大及復(fù)雜。 參考文獻(xiàn) ［ 1］ 蘇文成 .工廠供電 [M].機(jī)械工業(yè)出版社 . ［ 2］ 劉介才 .工廠供電設(shè)計(jì)指導(dǎo) [M].機(jī)械工業(yè)出版社 . ［ 3］ 供配電系統(tǒng)設(shè)計(jì)規(guī)范 [S].中國(guó)計(jì)劃出版社 .1996 ［ 4］ 低壓配電設(shè)計(jì)規(guī)范 [S].中國(guó)計(jì)劃出版社 . 。 本論文提出的思路、方案和結(jié)論不僅對(duì)于 lOkV配電網(wǎng)中性點(diǎn)接地方式選擇研究、實(shí)際工程應(yīng)用具有實(shí)際的參考作用，對(duì)于其他電壓等級(jí)中性點(diǎn)接地方式選擇同樣具有借鑒的作用。而接地方式的選擇，是與本國(guó)國(guó)情、自然環(huán)境、設(shè)備制造和運(yùn)行水平等有關(guān)的，例如，雷電的活動(dòng)情況、絕緣結(jié)構(gòu)的設(shè)計(jì)、對(duì)周邊的干擾等因素，都會(huì)影響中性點(diǎn)接地方式的選 擇 。s selfcontradictory in the coexistence of economy and improve the reliability of the power supply work, we must increase the investment cost of the work construction But, if the cost that improve the reliability of the work construction, but the investment on this kind of construction would be worthless if the reducing loss is on the poweroff is less than the increasing investment on improving the reliability .Thus we find out a balance point to make the most economic,between the investment and the loss by calculating the investment on power and the loss brought from poweroff. KEYWORDS: power supply and distribution, power distribution reliability ， reactive pensation, load distribution The revolution of electric power system has brought a new big round construction,which is pushing the greater revolution of electric power technique along with the application of new technique and advanced equipment. Especially, the bination of the information technique and electric power technique, to great ex tent, has improved reliability on electric quality and electric supply. The technical development decreases the cost on electric construction and drives innovation of electric work. On the basis of national and internatio nal advanced electric knowledge, the dissertation introduces the research hotspot for present electric power sy etem as following. Firstly, This dissertation introduces the building condition of distribution automation(DA), and brings forward two typical construction modes on DA construction, integrative mode and fission mode .It emphasize the DA structure under the condition of the fission mode and presents the system configuration, the main station scheme, the feeder scheme, the optimized munication scheme etc., which is for DA research reference. Secondly, as for the (DA) trouble measurement, position, isolation and resume, This dissertation analyzes the changes of pressure and current for line problem, gets math equation by educing phase short circuit and problem position under the condition of singlephase and works out equation and several parameter s Uamp。通過(guò)計(jì)算電網(wǎng)的投資和用戶(hù)停電的損失，最終可找到一個(gè)平衡點(diǎn)，使投資和損失的綜合經(jīng)濟(jì)性最優(yōu)。接著，本文結(jié)合國(guó)內(nèi)外科技的發(fā)展和創(chuàng)新成果，對(duì)諧振接地優(yōu)化方式中的微機(jī)接地保護(hù)性和自動(dòng)跟蹤補(bǔ)償裝置進(jìn)行全面的分析與論述，說(shuō)明諧振接地優(yōu)化方式在供電可靠性、人身安全、設(shè)備安全和通信干擾等方面，具有較好的運(yùn)行特性，既 解決了小電流接地系統(tǒng)接地保護(hù)的選擇性，又實(shí)現(xiàn)了自動(dòng)調(diào)諧，使此種接地方式成為配電網(wǎng)比較理想的中性點(diǎn)接地方式。而后對(duì)配電網(wǎng)各種接線模式的可靠性和經(jīng)濟(jì)性進(jìn)行了計(jì)算和分析，通過(guò)計(jì)算并描繪的各種圖表。通過(guò)計(jì)算電網(wǎng)的投資和用戶(hù)停電的損失，最終可找到一個(gè)平衡點(diǎn)，使投資和損失的綜合經(jīng)濟(jì)性最優(yōu)。本文首先對(duì)配電網(wǎng)各類(lèi)接地方式做深入的研究。對(duì)于所有用