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1、110kV電力變壓器結(jié)構(gòu)與電磁計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)計周期、降低生產(chǎn)成本和提高產(chǎn)品的質(zhì)量,從而增強產(chǎn)品的市場競爭力,取得顯著的社會經(jīng)濟(jì)效益,因此電力變壓器的電磁計算就顯得尤為重要。本文在參考大量文獻(xiàn)的基礎(chǔ)上,分析了我國電力變壓器行業(yè)的現(xiàn)狀和發(fā)展趨勢,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)計的基本思路,按照目前變壓器設(shè)計的一般方法,完成了一臺40000kVA/110kV有載調(diào)壓電力變壓器的計算工作,主要內(nèi)容包括阻抗電壓、空載、負(fù)載損耗、溫升、短路電
2、動力等的計算。電磁計算結(jié)果滿足國家標(biāo)準(zhǔn)和技術(shù)參數(shù)的要求。本文還針對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;電磁計算;結(jié)構(gòu)改進(jìn).-TheStructureandElectromagneticalCalculationof110kVPowerTransformerAbstractThefurtherdevelopmentofpowertransformer,whichisanimportantequipmenti
3、npowersystem,istoimprovetheliability,savematerialandreduceloss,obviouslyshortenproductdesignperiod,reducethecost,improveproductquality,strengthenthemarketcompetitivenessandgaindistincteconomicperformance.Therefore,theelectromagneticalcalculationofpowertransformerisespeciallyimp
4、ortant.Basedontheinformationandextensiveliterature,thisarticleanalyzesthepresentbasicprincipleandbasicstructureofpowertransformer,andalso,thepresentsituationandthedevelopmentofourcountry’spowertransformerindustry.Accordingtothegeneraldesigningmethodandthebasicdesigningideasofpo
5、wertransformer,awholeelectromagneticcalculationofa40000kVA/110kVOLTCpowertransformerhasbeencompletedinthearticle.Theresultsoftheelectromagneticcalculationmeettherequirementsofnationalstandardsandtechnicalparameters,includingthemaincontentsofimpedancevoltage,loadandno-loadloss,t
6、emperaturerise,short-circuitelectromagneticalforceandsoon.AsdevelopmentofChinesetransformermanufacturetechnology,themanufacturetechniqueof110kVdomesticpowertransformerisbeingclosetoorreachtotheadvancedlevelofforeigntransformer.Thisarticleintroduceshowtoimprovethestructureofthet
7、ransformerinordertoreduceno-loadloss,loadloss,noise,PD,themagneticleakageandtoimprovetheanti-short-circuitcapacity.Keywordspowertransformer;electromagneticcalculation;structureimprovement不.-目錄摘要IAbstractII第1章緒論31.1課題背景31.1.1課題的國內(nèi)外研究現(xiàn)狀與趨勢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
8、器基本結(jié)構(gòu)5第2章電力變壓器電磁計算82.1技術(shù)條件:82.2額定電壓和電流的計算82.2.1高、低壓線圈額