【正文】 ......................................................................................15 關(guān)于接地短路電流的計(jì)算 .......................................................................................................16 土壤電阻率 ρ 的取值 .............................................................................................................16 接地電阻值的要求 ...................................................................................................................17 接地網(wǎng)施工安裝 .............................................................................................................................17　 施工時(shí)，應(yīng)注意的問(wèn)題 ........................................................................................................17 接地網(wǎng)阻抗的測(cè)試 ........................................................................................................................17第五章 消弧 ......................................................................................................................................18常州信息職業(yè)技術(shù)學(xué)院電子與電氣工程學(xué)院 畢業(yè)設(shè)計(jì)論文第 5 頁(yè) 共 37 頁(yè) 10KV 中性點(diǎn)不接地系統(tǒng)的特點(diǎn) ....................................................................................................19 系統(tǒng)對(duì)地電容電流超標(biāo)的危害 .....................................................................................................19 單相接地電容電流的計(jì)算 ............................................................................................................19 空載電纜電容電流的計(jì)算 ......................................................................................................19 架空線電容電流的計(jì)算 ..........................................................................................................20 變電所增加電容電流的計(jì)算 ..................................................................................................20 傳統(tǒng)消弧線圈存在的問(wèn)題 ............................................................................................................20 自動(dòng)跟蹤消弧線圈補(bǔ)償技術(shù) .........................................................................................................21 接地變壓器 ..............................................................................................................................21 有載調(diào)節(jié)消弧線圈 ...................................................................................................................22 限壓阻尼電阻箱 ......................................................................................................................22 調(diào)諧和選線裝置 ......................................................................................................................22 隔離開(kāi)關(guān)、電壓互感器 ..........................................................................................................23 自動(dòng)跟蹤消弧線圈補(bǔ)償技術(shù)的性能和特點(diǎn) .................................................................................23 接地變壓器、消弧線圈容量和額定電流的確定 .........................................................................23 根據(jù)架空線或電纜參數(shù)計(jì)算公式計(jì)算電容電流 Ic ................................................................23 消弧線圈容量的確定 ...............................................................................................................23 消弧線圈容量及額定電流的選擇 ...........................................................................................23 接地變壓器容量選擇 ...............................................................................................................24結(jié)束語(yǔ) ...............................................................................................................................................25答謝詞 ...............................................................................................................................................26參考文獻(xiàn) ............................................................................................................................................27 常州信息職業(yè)技術(shù)學(xué)院電子與電氣工程學(xué)院 畢業(yè)設(shè)計(jì)論文第 6 頁(yè) 共 37 頁(yè)摘要 電氣設(shè)備的任何部分與大地(土壤)間作良好的電氣連接稱為接地。接地是確保電氣設(shè)備正常工作和安全防護(hù)的重要措施。電氣設(shè)備接地通過(guò)接地裝置實(shí)施。眾所周知，供電部門和工礦企業(yè)等用電戶給配電變壓器的防雷接地方式，通常采取高壓側(cè)接避雷器，然后將避雷器的接地引下線與配電變壓器外殼及低壓中性點(diǎn)相連，共用一個(gè)接地裝置的做法。配電變壓器的防雷保護(hù)接地是一項(xiàng)復(fù)雜的電氣工程，必須考慮防雷接地、保護(hù)接地、工作接地的各種要求，以其中最小值為標(biāo)準(zhǔn)來(lái)設(shè)計(jì)和施工。及時(shí)進(jìn)行試驗(yàn)，務(wù)必驗(yàn)收合格，方可投入使用。使用過(guò)程中還需要經(jīng)常檢查，測(cè)試其參數(shù)，使防雷和接地裝置長(zhǎng)期保持安全、穩(wěn)定、可靠地運(yùn)行，以確保人身和設(shè)備的安全。 關(guān)鍵字：接地 接地網(wǎng) 配電變壓器的接地連接 消弧常州信息職業(yè)技術(shù)學(xué)院電子與電氣工程學(xué)院 畢業(yè)設(shè)計(jì)論文第 7 頁(yè) 共 37 頁(yè)AbstractTheElectrical equipment to any part of the earth (soil) with good electrical connection between called grounding. Grounding is to ensure the normal working of electrical equipment and safety protection. Electrical equipment grounded by grounding to implement. As is known to all, power supply departments and industrial and mining enterprises etc to distribution transformer YongDianHu of lightningproof grounding mode, usually adopt highvoltage side up, then the lightning arrester and distribution transformer grounding lead referrals shell and lowpressure neutral grounding device, a Shared. Lightning protection of distribution transformer grounding is a plex electrical engineering, must consider lightningproof grounding protection, grounding, work with the various requirements of the ground, including minimum standards for the design and construction. Timely, acceptance test, may be put into use. Use process need often inspection, testing, the parameters of lightning and grounding to keep safe, stable and reliable operation, to ensure the safety of person and equipment.Key words: Ground connection；Grounding work；Connect the ground distribution transformers； Arc suppression.常州信息職業(yè)技術(shù)學(xué)院電子與電氣工程學(xué)院 畢業(yè)設(shè)計(jì)論文第 0 頁(yè) 共 37 頁(yè)第一章 前言地技術(shù)在現(xiàn)代電子領(lǐng)域方面得到了廣泛而深入的應(yīng)用。電子設(shè)備的“地”通常有兩種含義：一種是“大地”（安全地），另一種是“系統(tǒng)基準(zhǔn)地”（信號(hào)地）。接地就是指在系統(tǒng)與某個(gè)電位基準(zhǔn)面之間建立低阻的導(dǎo)電通路?！敖哟蟮亍笔且缘厍虻碾娢粸榛鶞?zhǔn)，并以大地作為零電位，把電子設(shè)備的金屬外殼、電路基準(zhǔn)點(diǎn)與大地相連。由于大地的電容非常大，一般認(rèn)為大地的電勢(shì)為零。開(kāi)始的時(shí)候，接地技術(shù)主要應(yīng)用在電力系統(tǒng)中，后來(lái)，接地技術(shù)延伸應(yīng)用到弱電系統(tǒng)中。在弱電系統(tǒng)中的接地一般不是指真實(shí)意義上與地球相連的接地。對(duì)于電力電子設(shè)備將接地線直接連在大地上或者接在一個(gè)作為參考電位的導(dǎo)體上，當(dāng)有電流通過(guò)該參考電位時(shí)，接地點(diǎn)是電路中的共用參考點(diǎn)，這一點(diǎn)的電壓為０Ｖ，電路中其他各點(diǎn)的電壓高低都是以這一參考點(diǎn)為基準(zhǔn)的，一般在電路圖中所標(biāo)出的各點(diǎn)電壓數(shù)據(jù)都是相對(duì)接地端的大小，這樣可以大大方便修理中的電壓測(cè)量。相同接地點(diǎn)之間的連線稱為地線。把接地平面與大地連接，往往是出于以下考慮：提高設(shè)備電路系統(tǒng)工