【正文】 shows a very big development potential.Then, this paper researches and introduces some operation characteristics of the arc suppressing coil grounding mode of the l0kV distribution network. And then the paper put emphasis on how to extinguish the earth electric arc effectively by utilizing the resonance principle. This paper bines the development of domestic and international technology and innovative achievement, and introduces the puter earth protection and autotracking pensate device. It proves that the improved arc suppressing coil grounding mode have better operation characteristics in power supply reliability, personal security, security of equipment and interference of munication. The application of the arc suppressing coil grounding mode is also researched in this paper.Finally, the paper summarizes this topic research. As a result of the domination of the arc suppressing coil grounding mode, it should be more popularized and applied in the distribution network in the way of thinking, project and conclusions in this thesis have effect on the research to choose the neutral grounding mode not only in I0kV distribution network but also in other power system..The basic function of the electric power system is to transport the electric power towards customers. The l0kV electric distribution net is a key point that connects the power supply with the electricity using on the industry, business and dailylife. For the electric power, all costumers expect to pay the lowest price for the highest reliability, but don39。s selfcontradictory in the coexistence of economy and reliable. To improve the reliability of the power supply network, we must increase the investment cost of the network con struction But, if the cost that improve the reliability of the network 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 net and the loss brought from poweroff. The thesis analyses on the economic and the reliable of the various line modes, according to the characteristics various line modes existed in the electric distribution net in foshan..First, the thesis introduces as the different line modes in the l0kV electric distribution net and in some foreign countries. Making it clear tow to conduct analyzing on the line mode of the electric distribution net, and telling us how important and necessary that analyses are.Second, it turns to the necessity of calculating the number of optimization subsection, elaborating how it influences on the economy and reliability. Then by building up the calculation mode of the number of optimization subsection it introduces different power supply projects on the different line modes in brief. Third, it carries on the calculation and analyses towards the reliability and economy of the different line modes of electric distribution net, describing drafts according by the calculation. Then it makes analysis and discussion on the number of optimization subsection.At last, the article make conclusion on the economy and reliability of different line modes, as well as, its application situation. Accordion to the actual circumstance, the thesis puts forward the beneficial suggestion on the programming and construction of the l0kV electric distribution net in all areas in foshan. Providing the basic theories and beneficial guideline for the programming design of the lOkV electric distribution net and building up a solid net, reasonable layout, qualified safe and efficientlyworked electric distribution net.References [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. 摘要：電力系統(tǒng)的基本功能是向用戶輸送電能。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。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。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(jì)性最優(yōu)。 s Iamp。 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)估計中數(shù)據(jù)對基于殘差的壞數(shù)據(jù)檢測和異常以及狀態(tài)量中壞數(shù)據(jù)對狀態(tài)估計的影響及存在的問題提出了狀態(tài)估計中拓?fù)溴e誤的一種實用化檢測和辯識方法針對竊電漏計電費問題獨創(chuàng)性提出一種通過電量突變和異常分析防止竊電的新方法并在濰坊城區(qū)配電得到驗證.(4)針對配電網(wǎng)負(fù)荷預(yù)測建模困難參數(shù)離散度大以及相關(guān)因素多等問題本文在分析常規(guī)負(fù)荷預(yù)測模型及方法基礎(chǔ)上引入了氣象因素日期類型社會環(huán)境影響等參數(shù)給出了基于神經(jīng)網(wǎng)絡(luò)的電力負(fù)荷預(yù)測方法實例驗證了方法的正確性.(5)針對無源濾波在抑制諧波和無功補償方面的不足以及補償度的不連續(xù)性本文提出了一種PWM 主電路拓樸結(jié)構(gòu)和基于無功功率理論的有源濾波方案建立了基于Saber Designer 仿真平臺仿真分析證明了方案的可行性同時結(jié)合配電自動化技術(shù)對配電網(wǎng)動態(tài)無功優(yōu)化補償和降低線損的方法進(jìn)行了設(shè)計分析通過實例計算驗證了其客觀的經(jīng)濟(jì)效益.(6)針對中國電力市場未來的發(fā)展趨勢以及政府監(jiān)管下的電力市場公平交易設(shè)計了一種適合我國電力市場現(xiàn)狀按照電價分組電量協(xié)調(diào)分組競價的短期電力交易模式給出了基于邊際電價的機(jī)組組合算法制訂交易計劃的數(shù)學(xué)模型以及安全經(jīng)濟(jì)約束等在競爭比例逐步提高的情況下能夠較好地解決原有中長期合同電價和短期競爭電價的矛盾減少電廠不公平的收益差異同時也可在電力市場全網(wǎng)的負(fù)荷曲線上對所有電廠進(jìn)行限量優(yōu)化減少總的系統(tǒng)購電費用.2 配電網(wǎng)分析配電網(wǎng)是電力系統(tǒng)中的一個重要環(huán)節(jié)，配電網(wǎng)接地方式和安全運行直接關(guān)系到電力系統(tǒng)的安全和穩(wěn)定。反過來，中性點接地方式對電力系統(tǒng)的設(shè)計、運行、調(diào)試以及發(fā)展都有很大影響。因此，在綜合考慮供電可靠性、安全因素、過電壓因素、繼電保護(hù)的選擇、投資費用等各方面因素的情況下，來論證正確選擇配電網(wǎng)接地方式的重要性，以及如何不斷開發(fā)，利用新型接地裝置來應(yīng)用在配電網(wǎng)接地系統(tǒng)中是當(dāng)今配電網(wǎng)接地方式的一個重要課題。分別論述各類接地方式的優(yōu)缺點，主要有國內(nèi)外比較常用的中性點不接地方式、中性點經(jīng)消弧線圈接地方式(也稱諧振接地方式)、中性點電阻接地方式、中性點直接接地方式。本文首先對配電網(wǎng)各類接地方式做深入的研究。然后，本文對10kv配電網(wǎng)中性點諧振接地方式的運行特性進(jìn)行了研究和介紹。接著，本文結(jié)合國內(nèi)外科技的發(fā)展和創(chuàng)新成果，對諧振接地優(yōu)化方式中的微機(jī)接地保護(hù)性和自動跟蹤補償裝置進(jìn)行全面的分析與論述，說明諧振接地優(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，又實現(xiàn)了自動調(diào)諧，使此種接地方式成為配電網(wǎng)比較理想的中性點接地方式。最后，本文總結(jié)了本課題研究的內(nèi)容。隨著電網(wǎng)的不斷發(fā)展和豐富的實踐結(jié)果表明，以諧振接地方式為代表的小電流接地方式優(yōu)于其他接地方式，這是配電網(wǎng)的中性點接地方式發(fā)展的總趨勢，在今后的配電網(wǎng)接地方式中應(yīng)推廣應(yīng)用。電力系統(tǒng)的基本功能是向用戶輸送電能。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。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。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(jì)性最優(yōu)。3 小結(jié)論文首先介紹10kv配電網(wǎng)各種典型的接線模式和國外幾個國家的典型接線模式，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。而后對配電網(wǎng)各種接線模式的可靠性和經(jīng)濟(jì)性進(jìn)行了計算和分析，通過計算并描繪的各種圖表。文章最后對各種接線模式的經(jīng)濟(jì)性和可靠性進(jìn)行總結(jié)，分析了各種接線模式各自的優(yōu)點和缺點，其適用情況。為10kv配電網(wǎng)的規(guī)劃設(shè)計及為建成網(wǎng)架堅實、布局合理、管理科學(xué)、能夠安全、優(yōu)質(zhì)、高效運行的配電網(wǎng)提供理論的依據(jù)和有益的