[優(yōu)秀畢業(yè)設(shè)計(jì)精品] 110kV電力變壓器結(jié)構(gòu)與電磁計(jì)算.doc

學(xué)士學(xué)位論文-I-110kV電力變壓器結(jié)構(gòu)與電磁計(jì)算摘要電力變壓器是電力系統(tǒng)中的一種重要設(shè)備，其發(fā)展趨勢(shì)是提高可靠性、節(jié)省材料、低損耗水平，明顯縮短產(chǎn)品的設(shè)計(jì)周期、降低生產(chǎn)成本和提高產(chǎn)品的質(zhì)量，從而增強(qiáng)產(chǎn)品的市場(chǎng)競(jìng)爭(zhēng)力，取得顯著的社會(huì)經(jīng)濟(jì)效益，因此電力變壓器的電磁計(jì)算就顯得尤為重要。本文在參考大量文獻(xiàn)的基礎(chǔ)上，分析了我國(guó)電力變壓器行業(yè)的現(xiàn)狀和發(fā)展趨勢(shì)，闡述了電力變壓器的基本原理和基本結(jié)構(gòu)特征，根據(jù)電力變壓器設(shè)計(jì)的基本思路，按照目前變壓器設(shè)計(jì)的一般方法，完成了一臺(tái)40000kVA/110kV有載調(diào)壓電力變壓器的計(jì)算工作，主要內(nèi)容包括阻抗電壓、空載、負(fù)載損耗、溫升、短路電動(dòng)力等的計(jì)算。電磁計(jì)算結(jié)果滿足國(guó)家標(biāo)準(zhǔn)和技術(shù)參數(shù)的要求。本文還針對(duì)電力變壓器的空載損耗、負(fù)載損耗、噪音、溫升、局放、滲漏及抗短能力，介紹了如何改進(jìn)變壓器的結(jié)構(gòu)以降低空載損耗和負(fù)載損耗、噪音、局放及提高抗短路能力，并達(dá)到防滲漏的效果。關(guān)鍵詞電力變壓器；電磁計(jì)算；結(jié)構(gòu)改進(jìn)學(xué)士學(xué)位論文-II-TheStructureandElectromagneticalCalculationof110kVPowerTransformerAbstractThefurtherdevelopmentofpowertransformer,whichisanimportantequipmentinpowersystem,istoimprovetheliability,savematerialandreduceloss,obviouslyshortenproductdesignperiod,reducethecost,improveproductquality,strengthenthemarketcompetitivenessandgaindistincteconomicperformance.Therefore,theelectromagneticalcalculationofpowertransformerisespeciallyimportant.Basedontheinformationandextensiveliterature,thisarticleanalyzesthepresentbasicprincipleandbasicstructureofpowertransformer,andalso,thepresentsituationandthedevelopmentofourcountryspowertransformerindustry.Accordingtothegeneraldesigningmethodandthebasicdesigningideasofpowertransformer,awholeelectromagneticcalculationofa40000kVA/110kVOLTCpowertransformerhasbeencompletedinthearticle.Theresultsoftheelectromagneticcalculationmeettherequirementsofnationalstandardsandtechnicalparameters,includingthemaincontentsofimpedancevoltage,loadandno-loadloss,temperaturerise,short-circuitelectromagneticalforceandsoon.AsdevelopmentofChinesetransformermanufacturetechnology,themanufacturetechniqueof110kVdomesticpowertransformerisbeingclosetoorreachtotheadvancedlevelofforeigntransformer.Thisarticleintroduceshowtoimprovethestructureofthetransformerinordertoreduceno-loadloss,loadloss,noise,PD,themagneticleakageandtoimprovetheanti-short-circuitcapacity.Keywordspowertransformer；electromagneticcalculation；structureimprovement學(xué)士學(xué)位論文-1-目錄摘要.IAbstract.II第1章緒論.31.1課題背景.31.1.1課題的國(guó)內(nèi)外研究現(xiàn)狀與趨勢(shì).31.2變壓器的工作原理與結(jié)構(gòu).41.2.1變壓器的基本工作原理.41.2.2電力變壓器基本結(jié)構(gòu).5第2章電力變壓器電磁計(jì)算.82.1技術(shù)條件：.82.2額定電壓和電流的計(jì)算.82.2.1高、低壓線圈額定電壓計(jì)算.82.2.2高低壓線圈電流計(jì)算.82.3鐵芯主要尺寸的確定.92.3.1鐵芯直徑選擇.92.3.2鐵芯截面積計(jì)算.92.4線圈匝數(shù)計(jì)算.102.4.1初選每匝電壓.102.4.2低壓線圈匝數(shù)確定.112.4.3高壓線圈匝數(shù)確定.112.4.4電壓比校核.112.5線圈幾何尺寸的計(jì)算.132.5.1導(dǎo)線選取.132.5.2線段排列.142.5.3線圈高度計(jì)算.152.5.4線圈輻向?qū)挾?152.5.5絕緣半徑及窗高.152.5.6導(dǎo)線長(zhǎng)度.162.5.7線圈直流電阻.172.5.8導(dǎo)線重量計(jì)算.172.6阻抗電壓計(jì)算.182.6.1額定分接阻抗電壓.182.6.2最大分接的阻抗電壓.20學(xué)士學(xué)位論文-2-2.6.3最小分接阻抗電壓.212.7負(fù)載損耗和空載損耗.222.7.1負(fù)載損耗.222.7.2鐵芯柱與鐵軛重量：.232.8溫升計(jì)算.252.8.1高壓線圈溫升.252.8.2低壓線圈溫升.262.8.3油對(duì)空氣溫升.272.8.4油箱尺寸.282.9變壓器短路電動(dòng)力計(jì)算.292.9.1安匝平衡計(jì)算：.292.9.2短路時(shí)繞組導(dǎo)線上應(yīng)力計(jì)算.312.10變壓器重量計(jì)算.332.10.1油