【正文】 [1] Wencheng Su. Factories power supply [M]. Machinery Industry Publishing House. [2] Jiecai Liu. Factories power supply design guidance [M]. Machinery Industry Publishing [3] Power supply and distribution system design specifications[S].China plans Press. 1996 [4] Lowvoltage distribution design specifications [S].China plans Press. 。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)于所有用戶(hù)都期望以最低的價(jià)格買(mǎi)到具有高度可靠性的電能。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。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。并結(jié)合實(shí)際情況針對(duì) lOkV配電網(wǎng)的規(guī)劃和建設(shè)提出有益的建議。諧振接地籍助微機(jī)技術(shù)的支持，近些年來(lái)國(guó)內(nèi)外均在進(jìn)行 3 優(yōu)化，優(yōu)化諧振接地技術(shù)是提高供電可靠性、保護(hù)人身安全、設(shè)備安全和電磁環(huán)境等的一項(xiàng)合理的重要技術(shù)手段，而諧振接地實(shí)施技術(shù)更充分發(fā)揮諧振接地方式的功能， 使諧振接地方式具有更好的技術(shù)經(jīng)濟(jì)指標(biāo)。 e Iamp。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