供配電系統(tǒng)外文翻譯---電力供應(yīng)和分配系統(tǒng)-其他專業(yè)-wenkub.com
2025-01-15 07:26 本頁面
【正文】 t consider that it39。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)合實際情況針對 lOkV配電網(wǎng)的規(guī)劃和建設(shè)提出有益的建議。再提出最優(yōu)分段數(shù)計算的必要性，闡述最優(yōu)分段數(shù)對經(jīng)濟性和可靠性的影響，然后建立最優(yōu)分段數(shù)計算模型，并簡單介紹各種接線模式的供電方案。但是，如果提高可靠性使用戶停電損失的降低小于用于提高可靠性所增加的投資，那么這種建設(shè)投資就沒有價值了。 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。諧振接地籍助微機技術(shù)的支持，近些年來國內(nèi)外均在進行 3 優(yōu)化，優(yōu)化諧振接地技術(shù)是提高供電可靠性、保護人身安全、設(shè)備安全和電磁環(huán)境等的一項合理的重要技術(shù)手段，而諧振接地實施技術(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)濟指標。從限制故障接地電弧的危害出發(fā)，重點論述如何利用電流諧振原理，有效熄滅故障接地電弧等。通過技術(shù)比較確定最優(yōu)接地方式，還利用一種近幾年研究開發(fā)的，應(yīng)用在諧振接地方式中的自動跟蹤補償裝置，再配以靈敏的小電流接地選線保護，能夠有效限制電網(wǎng)的故障接地電弧，更有利于電網(wǎng)的安全運行。一般在電壓等級較高的系統(tǒng)中，絕緣費用在設(shè)備總價格中占相當大的比重，降低絕緣水平帶來的經(jīng)濟效益很顯著，通常就采用中性點直接接地的方式，而采用自動重合閘來保證供電可靠性 :相反，在電壓等級較低的系統(tǒng)中，通常都采用中性點不接地的方式來提高供電可靠性。 e Iamp。但是，如果提高可靠性使用戶停電損失的降低小于用于提高可靠性所增加的投資，那么這種建設(shè)投資就沒有價值了。 1O kV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。對于所有用戶都期望以最低的價格買到具有高度可靠性的電能。通過計算電網(wǎng)的投資和用戶停電的損失，最終可找到一個平衡點，使投資和損失的綜合經(jīng)濟性最優(yōu)。 選擇表通過對故障的自動診斷與分析得出了優(yōu)化的隔離和恢復(fù)供電方案自動實現(xiàn)故障快速隔離與網(wǎng)絡(luò)重構(gòu)減少了用戶停電范圍和時間有效提高配網(wǎng)供電可靠性文中還給出了故障分段判斷以及網(wǎng)絡(luò)快速重構(gòu)的軟件流程和使用方法 . (3)狀態(tài)估計是實現(xiàn)配電自動化中關(guān)鍵技術(shù)之一本文在闡述狀態(tài)估計方法基礎(chǔ)上給出了不良測量數(shù)據(jù)的識別和結(jié)構(gòu)性錯誤的識別方法針對狀態(tài)估計
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