[畢業(yè)設(shè)計(jì)精品]機(jī)械廠10kv降壓變電所電氣設(shè)計(jì)

工廠供電課程設(shè)計(jì)題目機(jī)械廠10KV降壓變電所電氣設(shè)計(jì)專業(yè)班級09級機(jī)電4班學(xué)生姓名指導(dǎo)教師設(shè)計(jì)時(shí)間2011年9月1目錄前言2一、負(fù)荷計(jì)算和無功功率計(jì)算及補(bǔ)償3二、變電所位置和形式的選擇6三、變電所主變壓器臺數(shù)和容量及主接線方案的選擇7四、短路電流的計(jì)算8五、變電所一次設(shè)備的選擇與校驗(yàn)10六、變電所高、低壓線路的選擇13七、變電所二次回路方案選擇及繼電保護(hù)的整定15八、防雷和接地裝置的確定18九、心得和體會19十、附錄參考文獻(xiàn)20十一、附圖202前言課程設(shè)計(jì)是教學(xué)過程中的一個(gè)重要環(huán)節(jié)，通過課程設(shè)計(jì)可以鞏固本課程理論知識，掌握供配電設(shè)計(jì)的基本方法，通過解決各種實(shí)際問題，培G1871G10432G12447G2010G7524和解決實(shí)際G5049程G6228G7427問題的G14033G2159，G2528G7114G4557電G2159G5049G1006的G7389G1863G6931G12586、方G19036、G6228G7427G16280程G7389一定的G1114解，G3324計(jì)算、G13484圖、設(shè)計(jì)G16840G7138G1082G12573方G19766得G2052G16769G13463，G1038G1182G2530的G5049G1328G3892定基G11796G452本設(shè)計(jì)可G2010G1038九G18108G2010G726負(fù)荷計(jì)算和無功功率計(jì)算及補(bǔ)償G727變電所位置和形式的選擇G727變電所主變壓器臺數(shù)和容量及主接線方案的選擇G727短路電流的計(jì)算G727變電所一次設(shè)備的選擇與校驗(yàn)G727變電所高、低壓線路的選擇G727變電所二次回路方案選擇及繼電保護(hù)的整定G727防雷和接地裝置的確定G727心得和體會G727附參考文獻(xiàn)G452G2490G3818G7389設(shè)計(jì)圖G134524G5364G708以附圖的形式G13485G1998G709，G2010G2047是G726附圖一G457G2390G2318供電線G13530G16280G2022圖G458G727附圖二G457變電所G5191G19766G5079置圖G458G727附圖三G457變電所高壓電G8680主接線圖G458G727附圖四G457變電所低壓電G8680主接線圖G458G452G11013G1122設(shè)計(jì)G13785知識掌握的G9157G5242和G5203G5242G7389G19492，本設(shè)計(jì)G4590G7389G993G4448G2904的地方，G6976G16843G13781G5084、G2528學(xué)G6221G16792G6363G8503G7012011G51929G73883一負(fù)荷計(jì)算和無功功率計(jì)算及補(bǔ)償A1A0A2A3A4A5A6A7A8A9A10A4A11A12A14A15A13A16A17A19A18A5A6A20A22A23A21A24A25/KWA27A26A28A30TANA31A29A32A30COS1A34A33A36A3588025117065A38A372080102A40A39A41A42A36A35338035102070A38A3710080103A44A43A41A42A36A35338025117065A38A3710080104A46A45A41A42A36A35338025133060A38A3710080105A45A47A41A42A36A35338025117065A38A3710080106A13A48A41A42A36A35338050088075A38A3710080107A50A49A51A41A42A36A35138050133060A38A3710080108A53A52A41A42A36A35138035102070A38A3710080109A2A54A41A42A36A35138025117065A38A3750801010A56A55A11A36A35138050117065A38A37208010A58A57A59A38A3740007010一負(fù)荷計(jì)算和無功功率計(jì)算G3324負(fù)荷計(jì)算G7114，G18331G11004G19668要G13007數(shù)法G4557各個(gè)G17722G19400G17839G15904計(jì)算，G5194G4570G10043G7138和G2172G2159G18108G2010G2010G5332計(jì)算，G10043G7138G18108G2010G7380G2530和G4499G14305G2318G10043G7138一G17227計(jì)算G452G1867體G8505G20600G3926G991G4521G1191G5223G726G2172G2159G18108G2010，30118802522PKWKWG7273011221172574VARQKWK2230112225743386SKVAIA613011338651451732038KVAIAKVIG10043G7138G18108G2010，301220816PKWKWG72730110Q2G19148G17908G17722G19400G726G2172G2159G18108G2010，30213380351183PKWKWG72730211183102120666VARQKWK4223021118312066616898SKVAI302116898256751732038KVAIAKVIG10043G7138G18108G2010，302210088PKWKWG72730220Q3G19215壓G17722G19400G726G2172G2159G18108G2010，3031338025845PKWKWG727303184511798865VARQKWK2230318459886513006SKVAI303113006197611732038KVAIAKVIG10043G7138G18108G2010，303210088PKWKWG72730320Q4G18341G5049G17722G19400G726G2172G2159G18108G2010，3041338025845PKWKWG7273041845133112385VARQKWK22304111238584514061SKVAI304114061213641732038KVAIAKVIG10043G7138G18108G2010，304210088PKWKWG72730420Q5G5049G1867G17722G19400G726G2172G2159G18108G2010，3051338025845PKWKWG727305184511798865VARQKWK2230518459886513006SKVAI305113006197611732038KVAIAKVIG10043G7138G18108G2010，305210088PKWKWG72730520Q6電G19220G17722G19400G726G2172G2159G18108G2010，306133805169PKWKWG727306116908814872VARQKWK2230611691487222512SKVAI306122512342041732038KVAIAKVIG10043G7138G18108G2010，306210088PKWKWG72730620Q7G9921G3800理G17722G19400G726G2172G2159G18108G2010，30711380569PKWKWG7273071691339177VARQKWK22307169917711482SKVAI307111482174461732038KVAIAKVIG10043G7138G18108G2010，307210088PKWKWG72730720Q8裝配G17722G19400G726G2172G2159G18108G2010，3081138035483PKWKWG727308148310249266VARQKWK5223081483492666899SKVAI30816899104821732038KVAIAKVIG10043G7138G18108G2010，308210088PKWKWG72730820Q9G7438G1474G17722G19400G726G2172G2159G18108G2010，3091138025345PKWKWG727309134511740365VARQKWK223091345403655310SKVAI3091531080681732038KVAIAKVIG10043G7138G18108G2010，30925084PKWKWG72730920Q10G19161G9821G6163G726G2172G2159G18108G2010，301011380569PKWKWG72730101691178073VARQKWK22301016980731062SKVAI301011062161361732038KVAIAKVIG10043G7138G18108G2010，3010220816PKWKWG727301020Q11G4499G14305G2318G10043G7138，301140007280PKWKWG45230110QG2490G3818，所G7389G17722G19400的G10043G7138負(fù)荷G72630632PKWG2474G1852G2390的G2528G7114G13007數(shù)G1038G726095PK，097QK，G2029G1852G2390的計(jì)算負(fù)荷G1038G726113030130109509510636632107046IIPPPKW1130301109709786737284135VARIIQQK223010704684135136153SKVAG727301361532068693038KVAIAKV二無功功率補(bǔ)償G11013以G990計(jì)算可得變壓器低壓G1403的G16282G3324計(jì)算負(fù)荷G1038G72630136153SKVAG17837G7114低壓G1403的功率G3252數(shù)G1038G7262107046COS079136153G1038G1363高壓G1403的功率G3252數(shù)090，G2029低壓G1403補(bǔ)償G2530的功率G3252數(shù)G5224高G1122090，G2474G726COS095G452要G1363低壓G1403的功率G3252數(shù)G11013079提高G2052095，G2029低壓G1403G19668裝設(shè)的G5194聯(lián)電容器容量G1038G7266107046TANARCCOS079TANARCCOS095VAR47892VARCQKKG2474CQ480VARKG2029補(bǔ)償G2530變電所低壓G1403的G16282G3324計(jì)算負(fù)荷G1038G7262230210704684135480112980SKVA計(jì)算電流3021129801716603038KVAIAKV變壓器的功率損耗G1038G726302001500151129801695TPSKVAKW3020060061129806779VARTQSKVAK變電所高壓G1403的計(jì)算負(fù)荷G1038G7263011070461695108741PKWKWKW30184135480VAR6779VAR42914VARQKKK2230110874142914116903SKVAKVA3011169036750310KVAIAKV補(bǔ)償G2530的功率G3252數(shù)G1038G726108741COS093116903滿足G708大G1122090G709的要求G452三G5192耗電量的估算G5192G7389功電G14033消耗量及G5192無功電G14033耗電量可G11013G991式計(jì)算得G2052G726G5192G7389功電G14033消耗量G72630PWPTG5192無功電G14033耗電量G72630QWQT結(jié)合本G2390的情況，G5192負(fù)荷利G11004小G7114數(shù)TG10384800H，G2474G5192G5191均G7389功負(fù)荷G13007數(shù)072，G5192G5191均無功負(fù)荷G13007數(shù)078G452G11013此可得本G2390G726G5192G7389功耗電量G7266072116903480040410PWKWHKWHG727G5192無功耗電量G726607884135VAR480031510QWKHKWHG452二變電所位置和形式的選擇G11013G1122本G2390G7389二級重要負(fù)荷，考慮G2052G4557供電可靠性的要求，G18331G11004兩路G17839線，一路經(jīng)10KV公共市電架空G17839線G708中G19400G7389電G13530接入變電所G709G727一路引自鄰G2390高壓聯(lián)絡(luò)線G4527變電所的形式G11013G11004電負(fù)荷的狀況和周圍環(huán)境情況確定，根據(jù)G457變電所位置和形式的選擇G16280定G458及GB500531994的G16280定，結(jié)合本G2390的實(shí)際情況，G17837里變電所G18331G11004單G10432設(shè)G12447方式G452其設(shè)G12447位置參見附圖一G457G2390G2318供電線G13530G16280G2022圖G458G452內(nèi)G18108G5079置形式參見附圖二G457變電所G5191G19766G5079置圖G458G452三變電所主變壓器臺數(shù)和容量及主接線方案的選擇一變電所主變壓器臺數(shù)的選擇變壓器臺數(shù)G5224根據(jù)負(fù)荷特點(diǎn)和經(jīng)濟(jì)運(yùn)G15904G17839G15904選擇G452當(dāng)符合G991列條件之一G7114，宜裝設(shè)兩臺及以G990變壓器G726G7389大量一級或二級負(fù)荷G727季節(jié)性負(fù)荷變化較大G727集中負(fù)荷較大G452結(jié)合本G2390的情況，考慮G2052二級重要負(fù)荷的供電安G1852可靠，故選擇兩臺主變壓器G452二變電所主變壓器容量選擇G452每臺變壓器的容量NTSG5224G2528G7114滿足以G991兩個(gè)條件G7261G709任一臺變壓器單G10432運(yùn)G15904G7114，宜滿足G726300607NTSS2G709任一臺變壓器單G10432運(yùn)G15904G7114，G5224滿足G72630111NTSS，即滿足G1852G18108一、二級負(fù)荷G19668求G452代入數(shù)據(jù)可得G726NTSG7080607G709116903G7087014281832G709KVAG452又考慮G2052本G2390的G8680象資料G708G5192G5191均G8680溫G103820CG709，所選變壓器的實(shí)際容量G7261008920NTNTSSKVAA60也滿足G1363G11004要求，G2528G7114又考慮G2052未來510G5192的負(fù)荷發(fā)展，初G8505G2474NTS1000KVAG452考慮G2052安G1852性和可靠性的問題，確定變壓器G1038SC3G13007列箱型干式變壓器G452型號G726SC31000/10，其主要G6228G7427G6363標(biāo)G3926G991表所示G726變壓器型號額定容量/KVA額定電壓/KV聯(lián)結(jié)組型號損耗/KW空載電流0I短路阻抗KU高壓低壓空載負(fù)載SC31000/10100010504DYN11245745136G708附G726參考尺寸G708MMG709G726長G7261760寬G7261025高G7261655重量G708KGG709G7263410G709G708三G709變電所主接線方案的選擇方案G726高、低壓G1403均G18331G11004單母線G2010段G452優(yōu)點(diǎn)G726G11004斷路器把母線G2010段G2530，G4557重要8G11004戶可以從G993G2528母線段引G1998兩個(gè)回路，G11004兩個(gè)電路供電G727當(dāng)一段母線故障G7114，G2010段斷路器自G2172切除故障母線保證G8503常段母線G993G19400斷供電和G993致G1363重要G11004戶停電G452缺點(diǎn)G726當(dāng)一段母線或母線隔離G5332G1863檢G1474G7114該母線各G1998線須停電G727當(dāng)G1998線G1038雙回路G7114，常G1363架空線路G1998現(xiàn)交叉跨越G727擴(kuò)建G7114G19668G2533兩個(gè)方G2533均G15925擴(kuò)建G452方案G266G726單母線G2010段G5114G7061路G452優(yōu)點(diǎn)G726G1867G7389單母線G2010段G1852G18108優(yōu)點(diǎn)，G3324檢G1474斷路器G7114G993G14279中斷G4557G11004戶供電G452缺點(diǎn)G726常G11004G1122大型電G2390和變電中G7542，G6249資高G452方案G267G726高壓G18331G11004單母線、低壓單母線G2010段G452優(yōu)點(diǎn)G726任一主變壓器檢G1474或發(fā)G10995故障G7114，通過切G6454G6817G1328，即可G17817G17907G5686G3809G4557整個(gè)變電所的供電G452缺點(diǎn)G726G3324高壓母線或電G9316G17839線G17839G15904檢G1474或發(fā)G10995故障G7114，整個(gè)變電所G1185G19668停電G452以G990三種方案均G14033滿足主接線要求，G18331G11004三方案G7114G15441經(jīng)濟(jì)性G7380G1351，G1306是其可靠性G11468G8616其G1194兩方案G5058G727G18331G11004方案二G19668要的斷路器數(shù)量G3822，接線G3809G7446，G4439G1216的經(jīng)濟(jì)性G14033較G5058G727G18331G11004方案一G7094滿足負(fù)荷供電要求又較經(jīng)濟(jì)，故本次設(shè)計(jì)選G11004方案G452根據(jù)所選的接線方式，G11023G1998主接線圖，參見附圖三G457變電所高壓電G8680主接線圖G458G452四短路電流的計(jì)算本G2390的供電G13007G13491G12628圖G3926圖G708一G709所示G452G18331G11004兩路電G9316供線，一路G1038G17329本G23906KM的G20316電變電G12461經(jīng)LGJ185架空線G708G13007G13491G6365G286電G9316計(jì)G709，該干線G20330段所裝高壓斷路器的斷流容量G1038500MVAG727一路G1038鄰G2390高壓聯(lián)絡(luò)線G452G991G19766計(jì)算本G2390變電所高壓10KV母線G990K1點(diǎn)短路和低壓380V母線G990K2點(diǎn)短路的三G11468短路電流和短路容量G452G系統(tǒng)QF架空線L6KM鄰廠高壓聯(lián)絡(luò)線SC31000/10380VSC31000/10K1K2DYN1110KV圖G708一G709G991G19766G18331G11004標(biāo)G1052G2058法G17839G15904短路電流計(jì)算G452一確定基G1946G1552G7269G2474100DSMVA，1105CUKV，204CUKV所以G72611100550033105DDCSMVAIKAUKV221001440003304DDCSMVAIKAUKV二計(jì)算短路電路中各主要G1815件的電抗標(biāo)G1052G1552G726G708G5585G11065架空線G14279變電所的電G13530電抗G7091電G2159G13007G13491的電抗標(biāo)G1052G1552G72611000200500MVAXMVA2架空線路的電抗標(biāo)G1052G1552G726G7609G6175G1888得0035/XKM，G3252此G72622100035/61904105MVAXKMKMKV3G709電G2159變壓器的電抗標(biāo)G1052G1552G726G11013所選的變壓器的G6228G7427參數(shù)得6KU，G3252此G72634610060001001000MVAXXKVA可G13484得短路G12573G6940電路圖G3926圖G708二G709所示G452A62A63A64A65A66A66A63A62A65A67A64A68A69A63A70A65A64A68A63A70A65A64A71A72A62A71A72A66圖G708二G709三計(jì)算K1點(diǎn)的短路電路G5647電抗標(biāo)G1052G1552及三G11468短路電流和短路容量1G5647電抗標(biāo)G1052G1552G726112020019042104KXXX2三G11468短路電流周G7411G2010量G7389G6940G1552G726311155026142104DKKIKAIKAX3其G1194三G11468短路電流G72633312614KIIIKA325526146666SHIKAKA315126143947SHIKAKA4三G11468短路容量G726311100475292104DKKSMVASMVAX10四計(jì)算K2點(diǎn)短路電路G5647電抗標(biāo)G1052G1552及三G11468短路電流和短路容量1G5647電抗標(biāo)G1052G1552G72621234|020019046/25104KXXXXX2三G11468短路電流周G7411G2010量G7389G6940G1552G7263222144282135104DKKIKAIKAX3其G1194三G11468短路電流G726333228213KIIIKA31842821351912SHIKAKA31092821330752SHIKAKA4三G11468短路容量G726322100195925104DKKSMVASMVAX五變電所一次設(shè)備的選擇與校驗(yàn)一變電所高壓一次設(shè)備的選擇根據(jù)G7438G7812G2390所G3324地G2318的G3818G11040環(huán)境，高壓G1403G18331G11004G3837G8953市長G3490電器G7389G19492公G2508G10995G1147的G45G60G492G1610G708G61G709型戶內(nèi)G12239G5332式交流G18341G4658G4565G19393G5332G1863設(shè)備G452此高壓G5332G1863G7600的型號G726G45G60G492G1610G18G23G61G55G55G36G708G16840G7138G7264G726一次方案號G727ZG726G11507空斷路器G727TG726G5389G12795G6817G2172G727TAG726干G9921G5114G709G452其內(nèi)G18108高壓一次設(shè)備根據(jù)本G2390G19668求選G2474，G1867體設(shè)備見附圖三G457變電所高壓電G8680主接線圖G458G452初選設(shè)備G726高壓斷路器G726ZN2410/1250/20高壓G10088斷器G726RN210/0550電流G1126G5875器G726LZZQB61005200/5電壓G1126G5875器G726JDZJ10接地G5332G1863G726JN310/25母線型號G726TMY3G708504G709G727TMY3G7088010G7091G708606G709G13489G13548G4388型號G726ZA10Y抗G5379G5390G5242G726ALF375KNG708戶內(nèi)G6915G7621G13489G13548G4388G709從高壓配電G7600引G1998的10KV三G14467電G13530G18331G11004交聯(lián)G13870G1069G9923G13489G13548電G2159電G13530，型號G726YJV350，無G19062G19124護(hù)G3883，G13530G14467G7380高G5049G1328溫G524290CG452二變電所高壓一次設(shè)備的校驗(yàn)根據(jù)G457高壓一次設(shè)備的選擇校驗(yàn)G20045G11458和條件G458，G3324據(jù)電壓、電流、斷流G14033G2159選擇設(shè)備的基G11796G990，G4557所選的高壓G1403設(shè)備G17839G15904G5529G19668的G2172G12295定校驗(yàn)和G9921G12295定G5242校驗(yàn)G452設(shè)備的G2172G12295定校驗(yàn)1G12高壓電器G2172G12295定G5242校驗(yàn)校驗(yàn)條件G72633MAXMAXSHSHIIII11G11013以G990短路電流計(jì)算得3SHI6666KAG7273SHI2614KAG452G5194G7609G6226所選設(shè)備的數(shù)據(jù)資料G8616較得G726高壓斷路器ZN2410/1250/20MAXI50KA6666KA，滿足條件G727電流G1126G5875器LZZQB61005200/5MAXI79KA6666KA，滿足條件G727JN310/25接地G5332G1863MAXI63KA6666KA，滿足條件G4522G13489G13548G4388G2172G12295定G5242校驗(yàn)校驗(yàn)條件G7263ALCFF母線G18331G11004G5191G6930G3324G13489G13548G4388G990的方式，G2029G726333272310/CSHLFFINAAG708其中A200MMG727L900MMG709G452所以G7263CF272093666610/346302MKANANM375KN滿足要求G4523母線的G2172G12295定校驗(yàn)校驗(yàn)條件G726ALCTMY母線G7460料的G7380大G1813G16780G5224G2159AL140MPAG45210KV母線的短路電流3SHI3947KAG7273SHI6666KA三G11468短路G7114所G2475的G7380大電G2172G2159G7263CF272093666610/346302MKANANM母線的G5379G7366G2159G11709G72633463093121010FLNMMNM母線的G6142G19766G13007數(shù)G726226300500041671066BHMMWM母線G3324三G11468短路G7114的計(jì)算G5224G2159G7266331218716710CMNMMPAWM可得，AL140MPAC187MPA，滿足G2172G12295定性要求G452高壓設(shè)備的G9921G12295定性校驗(yàn)1高壓電器G9921G12295定性校驗(yàn)校驗(yàn)條件G726232TIMAITITG7609G19417G1147G2709資料G726高壓斷路器G726TI315KA,T4SG727電流G1126G5875器G726TI445KA,T1SG727接地G5332G1863G726TI25KA,T4SG452G2474070108IMAOPOCTTTS，3I2614KA，G4570數(shù)據(jù)代入G990式，經(jīng)計(jì)算以G990電器均滿足G9921G12295定性要求G452122高壓母線G9921G12295定性校驗(yàn)校驗(yàn)條件G726AMINA3IMATICG7609G1147G2709資料，得G19120母線的C1712SAMM，G2474075IMATSG452母線的G6142G19766G726A5042MM2002MMG1813G16780的G7380小G6142G19766G7262MIN207526141324171SAKAMMSAMM從G13792，MINAA，該母線滿足G9921G12295定性要求G4523高壓電G13530的G9921G12295定性校驗(yàn)校驗(yàn)條件G726AMINA3IMATICG1813G16780的G7380小G6142G19766G7262MIN207526141324171SAKAMMSAMM所選電G13530YJV350的G6142G19766A502MM從G13792，MINAA，該電G13530滿足G9921G12295定性要求G452三變電所低壓一次設(shè)備的選擇低壓G1403G18331G11004的也是G3837G8953長G3490電器G7389G19492公G2508G10995G1147的GGD2型低壓G5332G1863G7600，所選擇的主要低壓一次設(shè)備參見附圖四G457變電所低壓電G8680主接線圖G458G452G18108G2010初選設(shè)備G726低壓斷路器G726NA1型G7246G14033G987G14033斷路器、TMS30型G3621G3783無G20146G5371G7246G14033斷路器低壓G10088斷器G726NTG13007列電壓G1126G5875器G726JDZ1G13007列電流G1126G5875器G726LMZJ1、LMZ1G13007列母線型號G726TMY3G7088010G7091G708606G709G13489G13548G4388型號G726ZA6Y抗G5379G5390G5242G726ALF375KNG708戶內(nèi)G6915G7621G13489G13548G4388G709G2490G3818，無功補(bǔ)償G7600選G110042個(gè)GCJ101型G7600G4388，G18331G11004自G2172補(bǔ)償，滿足補(bǔ)償要求G452四變電所低壓一次設(shè)備的校驗(yàn)G11013G1122根據(jù)G457低壓一次設(shè)備的選擇校驗(yàn)G20045G11458和條件G458G17839G15904的低壓一次G1403設(shè)備選擇，G993G19668G1889G4557G10088斷器、G2004G5332G1863、斷路器G17839G15904校驗(yàn)G452G1863G1122低壓電流G1126G5875器、電壓G1126G5875器、電容器及母線、電G13530、G13489G13548G4388G12573校驗(yàn)G20045G11458與高壓G1403G11468G5224電器G11468G2528，G17837里G1177列G1998低壓母線的校驗(yàn)G726380G78G57G1403母線G990母線G2172G12295定性校驗(yàn)G726校驗(yàn)條件G72613ALCTMY母線G7460料的G7380大G1813G16780G5224G2159AL140MPAG452380KV母線的短路電流3SHI51912KA3SHI30752KA三G11468短路G7114所G2475的G7380大電G2172G2159G1038G72632720935191210/21003702MFKANANM母線的G5379G7366G2159G11709G7263210037091890331010FLNMMNM母線的G6142G19766G13007數(shù)G72622530080011071066BHMMWM母線G3324三G11468短路G7114的計(jì)算G5224G2159G72653189033176710710CMNMMPAWM可得，AL140MPAC1767MPA，滿足G2172G12295定性要求G452380VG1403母線G9921G12295定性校驗(yàn)G726校驗(yàn)條件G726AMINA3IMATICG7609G1147G2709資料，得G19120母線的C1712SAMM，G2474075IMATSG452母線的G6142G19766G726A80102MM8002MMG1813G16780的G7380小G6142G19766G7262MIN20752821314288171SAKAMMSAMM從G13792，MINAA，滿足G9921G12295定性要求G452六變電所高、低壓線路的選擇G1038G1114保證供電的安G1852、可靠、優(yōu)G17148、經(jīng)濟(jì)，選擇G4560線和電G13530G7114G5224滿足G991列條件G726發(fā)G9921條件G727電壓損耗條件G727經(jīng)濟(jì)電流G4506G5242G727G7438G7812G5390G5242G452根據(jù)設(shè)計(jì)經(jīng)驗(yàn)G726一G1433610KV及以G991的高壓線路和低壓G2172G2159線路，通常G1820G6365發(fā)G9921條件選擇G4560線和電G13530G6142G19766，G1889校驗(yàn)其電壓損耗和G7438G7812G5390G5242G452G4557G1122低壓G10043G7138線路，G3252G4557電壓水G5191要求較高，通常G1820G6365G1813G16780電壓損耗G17839G15904選擇，G1889校驗(yàn)其發(fā)G9921條件和G7438G7812G5390G5242G452（一）高壓線路導(dǎo)線的選擇14架空G17839線G2530接G1114一段交聯(lián)G13870G1069G9923G13489G13548電G2159電G13530YJV350做引入線G708直埋G709，高壓主接線G3926附圖三所示G452高壓G1403計(jì)算電流306570IA所選電G13530的G1813G16780載流量G726301256570ALIAIA滿足發(fā)G9921條件G452（二）低壓線路導(dǎo)線的選擇G11013G1122沒G7389設(shè)單G10432的G17722G19400變電所，G17839入各個(gè)G17722G19400的G4560線接線G18331G11004TNCSG13007G13491G727從變電所G2052各個(gè)G17722G19400及G4499G14305G2318G11004埋地電G13530供電，電G13530G18331G11004VV22型G19120G14467交聯(lián)G13870氯G1069G9923G13489G13548G19062G5114G19124裝G13870氯G1069G9923護(hù)G3883電G2159電G13530，根據(jù)G993G2528的G17722G19400負(fù)荷G18331G11004G993G2528的G6142G19766G452其中G4560線和電G13530的G6142G19766選擇滿足條件G7261G11468線G6142G19766的選擇以滿足發(fā)G9921條件即，30ALIIG7272中性線G708N線G709G6142G19766選擇，G17837里G18331G11004的G1038一G14336三G11468四線，滿足005AAG7273保護(hù)線G708PE線G709的G6142G19766選擇一、235AMMG7114，05PEAAG727二、216AMMG7114，PEAA三、221635MMAMMG19148G17908G17722G19400G726VV221KV32G230112031025675ALIAAG19161G9821G6163G726VV221KV312017020716136ALIAAG19215壓G17722G19400G726VV221KV3150195G72723719761ALIAAG18341G5049G17722G19400G726VV221KV318519526421364ALIAAG5049G1867G17722G19400G726VV221KV315019523719761ALIAAG9921G3800理G17722G19400G726VV221KV315019523717446ALIAA裝配G17722G19400G726VV221KV37015015210482ALIAA15G7438G1474G17722G19400G726VV221KV3501351298068ALIAAG1191G5223G726VV221KV325116875145ALIAAG4499G14305G2318G726VV221KV3185195兩根G5194聯(lián)G727264252842543ALIAAG2490G3818，送G14279各G17722G19400的G10043G7138線路G18331G11004G726G19120G14467G13870氯G1069G9923G13489G13548G4560線BG57型號G452七變電所二次回路方案選擇及繼電保護(hù)的整定（一）二次回路方案選擇1二次回路電源選擇二次回路G6817G1328電G9316G7389直流電G9316，交流電G9316之G2010G452蓄電池組供電的直流G6817G1328電G9316G5114G7389腐蝕性，G5194且G7389爆炸危險(xiǎn)G727G11013整流裝置供電的直流G6817G1328電G9316安G1852性高，G1306是經(jīng)濟(jì)性G5058G452考慮G2052交流G6817G1328電G9316可G1363二次回路大大G12628化，G6249資大大減少，且G5049G1328可靠，維護(hù)方便G452G17837里G18331G11004交流G6817G1328電G9316G4522高壓斷路器的控制和信號回路高壓斷路器的控G2058回路G2474決G1122G6817G1328G7438構(gòu)的形式和G6817G1328電G9316的類G2047G452結(jié)合G990G19766設(shè)備的選擇和電G9316選擇，G18331G11004G5389G12795G6817G1328G7438構(gòu)的斷路器控G2058和信號回路G4523電測量儀表與絕緣監(jiān)視裝置G17837里根據(jù)GBJ631990的G16280范要求選G11004合適的電測量儀表G5194配G11004G11468G5224G13489G13548監(jiān)G16282裝置G452A10KV電G9316G17839線G990G726電G14033計(jì)量G7600裝設(shè)G7389功電G14033表和無功電G14033表G727G1038G1114解負(fù)荷電流，裝設(shè)電流表一只G452B變電所每段母線G990G726裝設(shè)電壓表測量電壓G5194裝設(shè)G13489G13548檢測裝置G452C電G2159變壓器高壓G1403G726裝設(shè)電流表和G7389功電G14033表各一只G452D380V的電G9316G17839線和變壓器低壓G1403G726各裝一只電流表G452E低壓G2172G2159線路G726裝設(shè)電流表一只G4524電測量儀表與絕緣監(jiān)視裝置G3324二次回路中安裝自G2172重合閘裝置G708ARDG709G708G7438G7812一次重合式G709、備G11004電G9316自G2172G6249入裝置G708APDG709G45216（二）繼電保護(hù)的整定繼電保護(hù)要求具有選擇性，G17907G2172性，可靠性及靈敏性G452G11013G1122本G2390的高壓線路G993很長，容量G993很大，G3252此繼電保護(hù)裝置G8616較G12628單G452G4557線路的G11468G19400短路保護(hù)，主要G18331G11004G5114G7114G19492的過電流保護(hù)和瞬G7114G2172G1328的電流G17907斷保護(hù)G727G4557線路的單G11468接地保護(hù)G18331G11004G13489G13548監(jiān)G16282裝置，裝設(shè)G3324變電所高壓母線G990，G2172G1328G1122信號G452繼電保護(hù)裝置的接線方式G18331G11004兩G11468兩繼電器式接線G727繼電保護(hù)裝置的G6817G1328方式G18331G11004交流G6817G1328電G9316供電中的“去G2010流跳閘”G6817G1328方式G708接線G12628單，靈敏可靠G709G727G5114G7114G19492過電流保護(hù)G18331G11004反G7114G19492過電流保護(hù)裝置G452型號都G18331G11004GL25/10G452其優(yōu)點(diǎn)是G726繼電器數(shù)量大G1038減少，G13792且可G2528G7114實(shí)現(xiàn)電流G17907斷保護(hù)，可G18331G11004交流G6817G1328，運(yùn)G15904G12628單經(jīng)濟(jì)，G6249資大大降低G452此次設(shè)計(jì)G4557變壓器裝設(shè)過電流保護(hù)、G17907斷保護(hù)裝置G727G3324低壓G1403G18331G11004G11468G1863斷路器實(shí)現(xiàn)三段保護(hù)G4521變壓器繼電保護(hù)變電所內(nèi)裝G7389兩臺10/04KV1000KVA的變壓器G452低壓母線G1403三G11468短路電流G1038328213KIKA，高壓G1403繼電保護(hù)G11004電流G1126G5875器的變G8616G1038200/5A，繼電器G18331G11004GL25/10型，接成兩G11468兩繼電器方式G452G991G19766整定該繼電器的G2172G1328電流，G2172G1328G7114G19492和G17907斷電流倍數(shù)G452A過電流保護(hù)動作電流的整定13,08,RELREKK1WK，200/540IKMAX12241000/31023095LNTIIKVAKVA故其G2172G1328電流G726131230959380840OPIAAG2172G1328電流整定G10389AG452B過電流保護(hù)動作時(shí)限的整定G11013G1122此變電所G1038終端變電所，G3252此其過電流保護(hù)的10倍G2172G1328電流的G2172G1328G7114G19492整定G103805SG452C電流速斷保護(hù)速斷電流倍數(shù)整定17G247415,RELKMAX28213040/1011285KIKAKVKVA，故其G17907斷電流G1038G72615111285423240QBIAAG3252此G17907斷電流倍數(shù)整定G1038G7264232479QBNG4522）10KV側(cè)繼電保護(hù)G3324此選G11004GL25/10型繼電器G452G11013以G990條件得計(jì)算數(shù)據(jù)G726變壓器一次G1403過電流保護(hù)的10倍G2172G1328G7114G19492整定G103805SG727過電流保護(hù)G18331G11004兩G11468兩繼電器式接線G727高壓G1403線路G20330端的三G11468短路電流G10382614KAG727變G8616G1038200/5A保護(hù)G11004電流G1126G5875器G2172G1328電流G10389AG452G991G19766G4557高壓母線G3800的過電流保護(hù)裝置1KAG17839G15904整定G452G708高壓母線G3800繼電保護(hù)G11004電流G1126G5875器變G8616G1038200/5AG709整定1KA的G2