[毕业设计精品]机械厂10kv降压变电所电气设计

工厂供电课程设计题目机械厂10KV降压变电所电气设计专业班级09级机电4班学生姓名指导教师设计时间2011年9月1目录前言2一、负荷计算和无功功率计算及补偿3二、变电所位置和形式的选择6三、变电所主变压器台数和容量及主接线方案的选择7四、短路电流的计算8五、变电所一次设备的选择与校验10六、变电所高、低压线路的选择13七、变电所二次回路方案选择及继电保护的整定15八、防雷和接地装置的确定18九、心得和体会19十、附录参考文献20十一、附图202前言课程设计是教学过程中的一个重要环节，通过课程设计可以巩固本课程理论知识，掌握供配电设计的基本方法，通过解决各种实际问题，培G1871G10432G12447G2010G7524和解决实际G5049程G6228G7427问题的G14033G2159，G2528G7114G4557电G2159G5049G1006的G7389G1863G6931G12586、方G19036、G6228G7427G16280程G7389一定的G1114解，G3324计算、G13484图、设计G16840G7138G1082G12573方G19766得G2052G16769G13463，G1038G1182G2530的G5049G1328G3892定基G11796G452本设计可G2010G1038九G18108G2010G726负荷计算和无功功率计算及补偿G727变电所位置和形式的选择G727变电所主变压器台数和容量及主接线方案的选择G727短路电流的计算G727变电所一次设备的选择与校验G727变电所高、低压线路的选择G727变电所二次回路方案选择及继电保护的整定G727防雷和接地装置的确定G727心得和体会G727附参考文献G452G2490G3818G7389设计图G134524G5364G708以附图的形式G13485G1998G709，G2010G2047是G726附图一G457G2390G2318供电线G13530G16280G2022图G458G727附图二G457变电所G5191G19766G5079置图G458G727附图三G457变电所高压电G8680主接线图G458G727附图四G457变电所低压电G8680主接线图G458G452G11013G1122设计G13785知识掌握的G9157G5242和G5203G5242G7389G19492，本设计G4590G7389G993G4448G2904的地方，G6976G16843G13781G5084、G2528学G6221G16792G6363G8503G7012011G51929G73883一负荷计算和无功功率计算及补偿A1A0A2A3A4A5A6A7A8A9A10A4A11A12A14A15A13A16A17A19A18A5A6A20A22A23A21A24A25/KWA27A26A28A30TANA31A29A32A30COS1A34A33A36A3588025117065A38A372080102A40A39A41A42A36A35338035102070A38A3710080103A44A43A41A42A36A35338025117065A38A3710080104A46A45A41A42A36A35338025133060A38A3710080105A45A47A41A42A36A35338025117065A38A3710080106A13A48A41A42A36A35338050088075A38A3710080107A50A49A51A41A42A36A35138050133060A38A3710080108A53A52A41A42A36A35138035102070A38A3710080109A2A54A41A42A36A35138025117065A38A3750801010A56A55A11A36A35138050117065A38A37208010A58A57A59A38A3740007010一负荷计算和无功功率计算G3324负荷计算G7114，G18331G11004G19668要G13007数法G4557各个G17722G19400G17839G15904计算，G5194G4570G10043G7138和G2172G2159G18108G2010G2010G5332计算，G10043G7138G18108G2010G7380G2530和G4499G14305G2318G10043G7138一G17227计算G452G1867体G8505G20600G3926G991G4521G1191G5223G726G2172G2159G18108G2010，30118802522PKWKWG7273011221172574VARQKWK2230112225743386SKVAIA613011338651451732038KVAIAKVIG10043G7138G18108G2010，301220816PKWKWG72730110Q2G19148G17908G17722G19400G726G2172G2159G18108G2010，30213380351183PKWKWG72730211183102120666VARQKWK4223021118312066616898SKVAI302116898256751732038KVAIAKVIG10043G7138G18108G2010，302210088PKWKWG72730220Q3G19215压G17722G19400G726G2172G2159G18108G2010，3031338025845PKWKWG727303184511798865VARQKWK2230318459886513006SKVAI303113006197611732038KVAIAKVIG10043G7138G18108G2010，303210088PKWKWG72730320Q4G18341G5049G17722G19400G726G2172G2159G18108G2010，3041338025845PKWKWG7273041845133112385VARQKWK22304111238584514061SKVAI304114061213641732038KVAIAKVIG10043G7138G18108G2010，304210088PKWKWG72730420Q5G5049G1867G17722G19400G726G2172G2159G18108G2010，3051338025845PKWKWG727305184511798865VARQKWK2230518459886513006SKVAI305113006197611732038KVAIAKVIG10043G7138G18108G2010，305210088PKWKWG72730520Q6电G19220G17722G19400G726G2172G2159G18108G2010，306133805169PKWKWG727306116908814872VARQKWK2230611691487222512SKVAI306122512342041732038KVAIAKVIG10043G7138G18108G2010，306210088PKWKWG72730620Q7G9921G3800理G17722G19400G726G2172G2159G18108G2010，30711380569PKWKWG7273071691339177VARQKWK22307169917711482SKVAI307111482174461732038KVAIAKVIG10043G7138G18108G2010，307210088PKWKWG72730720Q8装配G17722G19400G726G2172G2159G18108G2010，3081138035483PKWKWG727308148310249266VARQKWK5223081483492666899SKVAI30816899104821732038KVAIAKVIG10043G7138G18108G2010，308210088PKWKWG72730820Q9G7438G1474G17722G19400G726G2172G2159G18108G2010，3091138025345PKWKWG727309134511740365VARQKWK223091345403655310SKVAI3091531080681732038KVAIAKVIG10043G7138G18108G2010，30925084PKWKWG72730920Q10G19161G9821G6163G726G2172G2159G18108G2010，301011380569PKWKWG72730101691178073VARQKWK22301016980731062SKVAI301011062161361732038KVAIAKVIG10043G7138G18108G2010，3010220816PKWKWG727301020Q11G4499G14305G2318G10043G7138，301140007280PKWKWG45230110QG2490G3818，所G7389G17722G19400的G10043G7138负荷G72630632PKWG2474G1852G2390的G2528G7114G13007数G1038G726095PK，097QK，G2029G1852G2390的计算负荷G1038G726113030130109509510636632107046IIPPPKW1130301109709786737284135VARIIQQK223010704684135136153SKVAG727301361532068693038KVAIAKV二无功功率补偿G11013以G990计算可得变压器低压G1403的G16282G3324计算负荷G1038G72630136153SKVAG17837G7114低压G1403的功率G3252数G1038G7262107046COS079136153G1038G1363高压G1403的功率G3252数090，G2029低压G1403补偿G2530的功率G3252数G5224高G1122090，G2474G726COS095G452要G1363低压G1403的功率G3252数G11013079提高G2052095，G2029低压G1403G19668装设的G5194联电容器容量G1038G7266107046TANARCCOS079TANARCCOS095VAR47892VARCQKKG2474CQ480VARKG2029补偿G2530变电所低压G1403的G16282G3324计算负荷G1038G7262230210704684135480112980SKVA计算电流3021129801716603038KVAIAKV变压器的功率损耗G1038G726302001500151129801695TPSKVAKW3020060061129806779VARTQSKVAK变电所高压G1403的计算负荷G1038G7263011070461695108741PKWKWKW30184135480VAR6779VAR42914VARQKKK2230110874142914116903SKVAKVA3011169036750310KVAIAKV补偿G2530的功率G3252数G1038G726108741COS093116903满足G708大G1122090G709的要求G452三G5192耗电量的估算G5192G7389功电G14033消耗量及G5192无功电G14033耗电量可G11013G991式计算得G2052G726G5192G7389功电G14033消耗量G72630PWPTG5192无功电G14033耗电量G72630QWQT结合本G2390的情况，G5192负荷利G11004小G7114数TG10384800H，G2474G5192G5191均G7389功负荷G13007数072，G5192G5191均无功负荷G13007数078G452G11013此可得本G2390G726G5192G7389功耗电量G7266072116903480040410PWKWHKWHG727G5192无功耗电量G726607884135VAR480031510QWKHKWHG452二变电所位置和形式的选择G11013G1122本G2390G7389二级重要负荷，考虑G2052G4557供电可靠性的要求，G18331G11004两路G17839线，一路经10KV公共市电架空G17839线G708中G19400G7389电G13530接入变电所G709G727一路引自邻G2390高压联络线G4527变电所的形式G11013G11004电负荷的状况和周围环境情况确定，根据G457变电所位置和形式的选择G16280定G458及GB500531994的G16280定，结合本G2390的实际情况，G17837里变电所G18331G11004单G10432设G12447方式G452其设G12447位置参见附图一G457G2390G2318供电线G13530G16280G2022图G458G452内G18108G5079置形式参见附图二G457变电所G5191G19766G5079置图G458G452三变电所主变压器台数和容量及主接线方案的选择一变电所主变压器台数的选择变压器台数G5224根据负荷特点和经济运G15904G17839G15904选择G452当符合G991列条件之一G7114，宜装设两台及以G990变压器G726G7389大量一级或二级负荷G727季节性负荷变化较大G727集中负荷较大G452结合本G2390的情况，考虑G2052二级重要负荷的供电安G1852可靠，故选择两台主变压器G452二变电所主变压器容量选择G452每台变压器的容量NTSG5224G2528G7114满足以G991两个条件G7261G709任一台变压器单G10432运G15904G7114，宜满足G726300607NTSS2G709任一台变压器单G10432运G15904G7114，G5224满足G72630111NTSS，即满足G1852G18108一、二级负荷G19668求G452代入数据可得G726NTSG7080607G709116903G7087014281832G709KVAG452又考虑G2052本G2390的G8680象资料G708G5192G5191均G8680温G103820CG709，所选变压器的实际容量G7261008920NTNTSSKVAA60也满足G1363G11004要求，G2528G7114又考虑G2052未来510G5192的负荷发展，初G8505G2474NTS1000KVAG452考虑G2052安G1852性和可靠性的问题，确定变压器G1038SC3G13007列箱型干式变压器G452型号G726SC31000/10，其主要G6228G7427G6363标G3926G991表所示G726变压器型号额定容量/KVA额定电压/KV联结组型号损耗/KW空载电流0I短路阻抗KU高压低压空载负载SC31000/10100010504DYN11245745136G708附G726参考尺寸G708MMG709G726长G7261760宽G7261025高G7261655重量G708KGG709G7263410G709G708三G709变电所主接线方案的选择方案G726高、低压G1403均G18331G11004单母线G2010段G452优点G726G11004断路器把母线G2010段G2530，G4557重要8G11004户可以从G993G2528母线段引G1998两个回路，G11004两个电路供电G727当一段母线故障G7114，G2010段断路器自G2172切除故障母线保证G8503常段母线G993G19400断供电和G993致G1363重要G11004户停电G452缺点G726当一段母线或母线隔离G5332G1863检G1474G7114该母线各G1998线须停电G727当G1998线G1038双回路G7114，常G1363架空线路G1998现交叉跨越G727扩建G7114G19668G2533两个方G2533均G15925扩建G452方案G266G726单母线G2010段G5114G7061路G452优点G726G1867G7389单母线G2010段G1852G18108优点，G3324检G1474断路器G7114G993G14279中断G4557G11004户供电G452缺点G726常G11004G1122大型电G2390和变电中G7542，G6249资高G452方案G267G726高压G18331G11004单母线、低压单母线G2010段G452优点G726任一主变压器检G1474或发G10995故障G7114，通过切G6454G6817G1328，即可G17817G17907G5686G3809G4557整个变电所的供电G452缺点G726G3324高压母线或电G9316G17839线G17839G15904检G1474或发G10995故障G7114，整个变电所G1185G19668停电G452以G990三种方案均G14033满足主接线要求，G18331G11004三方案G7114G15441经济性G7380G1351，G1306是其可靠性G11468G8616其G1194两方案G5058G727G18331G11004方案二G19668要的断路器数量G3822，接线G3809G7446，G4439G1216的经济性G14033较G5058G727G18331G11004方案一G7094满足负荷供电要求又较经济，故本次设计选G11004方案G452根据所选的接线方式，G11023G1998主接线图，参见附图三G457变电所高压电G8680主接线图G458G452四短路电流的计算本G2390的供电G13007G13491G12628图G3926图G708一G709所示G452G18331G11004两路电G9316供线，一路G1038G17329本G23906KM的G20316电变电G12461经LGJ185架空线G708G13007G13491G6365G286电G9316计G709，该干线G20330段所装高压断路器的断流容量G1038500MVAG727一路G1038邻G2390高压联络线G452G991G19766计算本G2390变电所高压10KV母线G990K1点短路和低压380V母线G990K2点短路的三G11468短路电流和短路容量G452G系统QF架空线L6KM邻厂高压联络线SC31000/10380VSC31000/10K1K2DYN1110KV图G708一G709G991G19766G18331G11004标G1052G2058法G17839G15904短路电流计算G452一确定基G1946G1552G7269G2474100DSMVA，1105CUKV，204CUKV所以G72611100550033105DDCSMVAIKAUKV221001440003304DDCSMVAIKAUKV二计算短路电路中各主要G1815件的电抗标G1052G1552G726G708G5585G11065架空线G14279变电所的电G13530电抗G7091电G2159G13007G13491的电抗标G1052G1552G72611000200500MVAXMVA2架空线路的电抗标G1052G1552G726G7609G6175G1888得0035/XKM，G3252此G72622100035/61904105MVAXKMKMKV3G709电G2159变压器的电抗标G1052G1552G726G11013所选的变压器的G6228G7427参数得6KU，G3252此G72634610060001001000MVAXXKVA可G13484得短路G12573G6940电路图G3926图G708二G709所示G452A62A63A64A65A66A66A63A62A65A67A64A68A69A63A70A65A64A68A63A70A65A64A71A72A62A71A72A66图G708二G709三计算K1点的短路电路G5647电抗标G1052G1552及三G11468短路电流和短路容量1G5647电抗标G1052G1552G726112020019042104KXXX2三G11468短路电流周G7411G2010量G7389G6940G1552G726311155026142104DKKIKAIKAX3其G1194三G11468短路电流G72633312614KIIIKA325526146666SHIKAKA315126143947SHIKAKA4三G11468短路容量G726311100475292104DKKSMVASMVAX10四计算K2点短路电路G5647电抗标G1052G1552及三G11468短路电流和短路容量1G5647电抗标G1052G1552G72621234|020019046/25104KXXXXX2三G11468短路电流周G7411G2010量G7389G6940G1552G7263222144282135104DKKIKAIKAX3其G1194三G11468短路电流G726333228213KIIIKA31842821351912SHIKAKA31092821330752SHIKAKA4三G11468短路容量G726322100195925104DKKSMVASMVAX五变电所一次设备的选择与校验一变电所高压一次设备的选择根据G7438G7812G2390所G3324地G2318的G3818G11040环境，高压G1403G18331G11004G3837G8953市长G3490电器G7389G19492公G2508G10995G1147的G45G60G492G1610G708G61G709型户内G12239G5332式交流G18341G4658G4565G19393G5332G1863设备G452此高压G5332G1863G7600的型号G726G45G60G492G1610G18G23G61G55G55G36G708G16840G7138G7264G726一次方案号G727ZG726G11507空断路器G727TG726G5389G12795G6817G2172G727TAG726干G9921G5114G709G452其内G18108高压一次设备根据本G2390G19668求选G2474，G1867体设备见附图三G457变电所高压电G8680主接线图G458G452初选设备G726高压断路器G726ZN2410/1250/20高压G10088断器G726RN210/0550电流G1126G5875器G726LZZQB61005200/5电压G1126G5875器G726JDZJ10接地G5332G1863G726JN310/25母线型号G726TMY3G708504G709G727TMY3G7088010G7091G708606G709G13489G13548G4388型号G726ZA10Y抗G5379G5390G5242G726ALF375KNG708户内G6915G7621G13489G13548G4388G709从高压配电G7600引G1998的10KV三G14467电G13530G18331G11004交联G13870G1069G9923G13489G13548电G2159电G13530，型号G726YJV350，无G19062G19124护G3883，G13530G14467G7380高G5049G1328温G524290CG452二变电所高压一次设备的校验根据G457高压一次设备的选择校验G20045G11458和条件G458，G3324据电压、电流、断流G14033G2159选择设备的基G11796G990，G4557所选的高压G1403设备G17839G15904G5529G19668的G2172G12295定校验和G9921G12295定G5242校验G452设备的G2172G12295定校验1G12高压电器G2172G12295定G5242校验校验条件G72633MAXMAXSHSHIIII11G11013以G990短路电流计算得3SHI6666KAG7273SHI2614KAG452G5194G7609G6226所选设备的数据资料G8616较得G726高压断路器ZN2410/1250/20MAXI50KA6666KA，满足条件G727电流G1126G5875器LZZQB61005200/5MAXI79KA6666KA，满足条件G727JN310/25接地G5332G1863MAXI63KA6666KA，满足条件G4522G13489G13548G4388G2172G12295定G5242校验校验条件G7263ALCFF母线G18331G11004G5191G6930G3324G13489G13548G4388G990的方式，G2029G726333272310/CSHLFFINAAG708其中A200MMG727L900MMG709G452所以G7263CF272093666610/346302MKANANM375KN满足要求G4523母线的G2172G12295定校验校验条件G726ALCTMY母线G7460料的G7380大G1813G16780G5224G2159AL140MPAG45210KV母线的短路电流3SHI3947KAG7273SHI6666KA三G11468短路G7114所G2475的G7380大电G2172G2159G7263CF272093666610/346302MKANANM母线的G5379G7366G2159G11709G72633463093121010FLNMMNM母线的G6142G19766G13007数G726226300500041671066BHMMWM母线G3324三G11468短路G7114的计算G5224G2159G7266331218716710CMNMMPAWM可得，AL140MPAC187MPA，满足G2172G12295定性要求G452高压设备的G9921G12295定性校验1高压电器G9921G12295定性校验校验条件G726232TIMAITITG7609G19417G1147G2709资料G726高压断路器G726TI315KA,T4SG727电流G1126G5875器G726TI445KA,T1SG727接地G5332G1863G726TI25KA,T4SG452G2474070108IMAOPOCTTTS，3I2614KA，G4570数据代入G990式，经计算以G990电器均满足G9921G12295定性要求G452122高压母线G9921G12295定性校验校验条件G726AMINA3IMATICG7609G1147G2709资料，得G19120母线的C1712SAMM，G2474075IMATSG452母线的G6142G19766G726A5042MM2002MMG1813G16780的G7380小G6142G19766G7262MIN207526141324171SAKAMMSAMM从G13792，MINAA，该母线满足G9921G12295定性要求G4523高压电G13530的G9921G12295定性校验校验条件G726AMINA3IMATICG1813G16780的G7380小G6142G19766G7262MIN207526141324171SAKAMMSAMM所选电G13530YJV350的G6142G19766A502MM从G13792，MINAA，该电G13530满足G9921G12295定性要求G452三变电所低压一次设备的选择低压G1403G18331G11004的也是G3837G8953长G3490电器G7389G19492公G2508G10995G1147的GGD2型低压G5332G1863G7600，所选择的主要低压一次设备参见附图四G457变电所低压电G8680主接线图G458G452G18108G2010初选设备G726低压断路器G726NA1型G7246G14033G987G14033断路器、TMS30型G3621G3783无G20146G5371G7246G14033断路器低压G10088断器G726NTG13007列电压G1126G5875器G726JDZ1G13007列电流G1126G5875器G726LMZJ1、LMZ1G13007列母线型号G726TMY3G7088010G7091G708606G709G13489G13548G4388型号G726ZA6Y抗G5379G5390G5242G726ALF375KNG708户内G6915G7621G13489G13548G4388G709G2490G3818，无功补偿G7600选G110042个GCJ101型G7600G4388，G18331G11004自G2172补偿，满足补偿要求G452四变电所低压一次设备的校验G11013G1122根据G457低压一次设备的选择校验G20045G11458和条件G458G17839G15904的低压一次G1403设备选择，G993G19668G1889G4557G10088断器、G2004G5332G1863、断路器G17839G15904校验G452G1863G1122低压电流G1126G5875器、电压G1126G5875器、电容器及母线、电G13530、G13489G13548G4388G12573校验G20045G11458与高压G1403G11468G5224电器G11468G2528，G17837里G1177列G1998低压母线的校验G726380G78G57G1403母线G990母线G2172G12295定性校验G726校验条件G72613ALCTMY母线G7460料的G7380大G1813G16780G5224G2159AL140MPAG452380KV母线的短路电流3SHI51912KA3SHI30752KA三G11468短路G7114所G2475的G7380大电G2172G2159G1038G72632720935191210/21003702MFKANANM母线的G5379G7366G2159G11709G7263210037091890331010FLNMMNM母线的G6142G19766G13007数G72622530080011071066BHMMWM母线G3324三G11468短路G7114的计算G5224G2159G72653189033176710710CMNMMPAWM可得，AL140MPAC1767MPA，满足G2172G12295定性要求G452380VG1403母线G9921G12295定性校验G726校验条件G726AMINA3IMATICG7609G1147G2709资料，得G19120母线的C1712SAMM，G2474075IMATSG452母线的G6142G19766G726A80102MM8002MMG1813G16780的G7380小G6142G19766G7262MIN20752821314288171SAKAMMSAMM从G13792，MINAA，满足G9921G12295定性要求G452六变电所高、低压线路的选择G1038G1114保证供电的安G1852、可靠、优G17148、经济，选择G4560线和电G13530G7114G5224满足G991列条件G726发G9921条件G727电压损耗条件G727经济电流G4506G5242G727G7438G7812G5390G5242G452根据设计经验G726一G1433610KV及以G991的高压线路和低压G2172G2159线路，通常G1820G6365发G9921条件选择G4560线和电G13530G6142G19766，G1889校验其电压损耗和G7438G7812G5390G5242G452G4557G1122低压G10043G7138线路，G3252G4557电压水G5191要求较高，通常G1820G6365G1813G16780电压损耗G17839G15904选择，G1889校验其发G9921条件和G7438G7812G5390G5242G452（一）高压线路导线的选择14架空G17839线G2530接G1114一段交联G13870G1069G9923G13489G13548电G2159电G13530YJV350做引入线G708直埋G709，高压主接线G3926附图三所示G452高压G1403计算电流306570IA所选电G13530的G1813G16780载流量G726301256570ALIAIA满足发G9921条件G452（二）低压线路导线的选择G11013G1122没G7389设单G10432的G17722G19400变电所，G17839入各个G17722G19400的G4560线接线G18331G11004TNCSG13007G13491G727从变电所G2052各个G17722G19400及G4499G14305G2318G11004埋地电G13530供电，电G13530G18331G11004VV22型G19120G14467交联G13870氯G1069G9923G13489G13548G19062G5114G19124装G13870氯G1069G9923护G3883电G2159电G13530，根据G993G2528的G17722G19400负荷G18331G11004G993G2528的G6142G19766G452其中G4560线和电G13530的G6142G19766选择满足条件G7261G11468线G6142G19766的选择以满足发G9921条件即，30ALIIG7272中性线G708N线G709G6142G19766选择，G17837里G18331G11004的G1038一G14336三G11468四线，满足005AAG7273保护线G708PE线G709的G6142G19766选择一、235AMMG7114，05PEAAG727二、216AMMG7114，PEAA三、221635MMAMMG19148G17908G17722G19400G726VV221KV32G230112031025675ALIAAG19161G9821G6163G726VV221KV312017020716136ALIAAG19215压G17722G19400G726VV221KV3150195G72723719761ALIAAG18341G5049G17722G19400G726VV221KV318519526421364ALIAAG5049G1867G17722G19400G726VV221KV315019523719761ALIAAG9921G3800理G17722G19400G726VV221KV315019523717446ALIAA装配G17722G19400G726VV221KV37015015210482ALIAA15G7438G1474G17722G19400G726VV221KV3501351298068ALIAAG1191G5223G726VV221KV325116875145ALIAAG4499G14305G2318G726VV221KV3185195两根G5194联G727264252842543ALIAAG2490G3818，送G14279各G17722G19400的G10043G7138线路G18331G11004G726G19120G14467G13870氯G1069G9923G13489G13548G4560线BG57型号G452七变电所二次回路方案选择及继电保护的整定（一）二次回路方案选择1二次回路电源选择二次回路G6817G1328电G9316G7389直流电G9316，交流电G9316之G2010G452蓄电池组供电的直流G6817G1328电G9316G5114G7389腐蚀性，G5194且G7389爆炸危险G727G11013整流装置供电的直流G6817G1328电G9316安G1852性高，G1306是经济性G5058G452考虑G2052交流G6817G1328电G9316可G1363二次回路大大G12628化，G6249资大大减少，且G5049G1328可靠，维护方便G452G17837里G18331G11004交流G6817G1328电G9316G4522高压断路器的控制和信号回路高压断路器的控G2058回路G2474决G1122G6817G1328G7438构的形式和G6817G1328电G9316的类G2047G452结合G990G19766设备的选择和电G9316选择，G18331G11004G5389G12795G6817G1328G7438构的断路器控G2058和信号回路G4523电测量仪表与绝缘监视装置G17837里根据GBJ631990的G16280范要求选G11004合适的电测量仪表G5194配G11004G11468G5224G13489G13548监G16282装置G452A10KV电G9316G17839线G990G726电G14033计量G7600装设G7389功电G14033表和无功电G14033表G727G1038G1114解负荷电流，装设电流表一只G452B变电所每段母线G990G726装设电压表测量电压G5194装设G13489G13548检测装置G452C电G2159变压器高压G1403G726装设电流表和G7389功电G14033表各一只G452D380V的电G9316G17839线和变压器低压G1403G726各装一只电流表G452E低压G2172G2159线路G726装设电流表一只G4524电测量仪表与绝缘监视装置G3324二次回路中安装自G2172重合闸装置G708ARDG709G708G7438G7812一次重合式G709、备G11004电G9316自G2172G6249入装置G708APDG709G45216（二）继电保护的整定继电保护要求具有选择性，G17907G2172性，可靠性及灵敏性G452G11013G1122本G2390的高压线路G993很长，容量G993很大，G3252此继电保护装置G8616较G12628单G452G4557线路的G11468G19400短路保护，主要G18331G11004G5114G7114G19492的过电流保护和瞬G7114G2172G1328的电流G17907断保护G727G4557线路的单G11468接地保护G18331G11004G13489G13548监G16282装置，装设G3324变电所高压母线G990，G2172G1328G1122信号G452继电保护装置的接线方式G18331G11004两G11468两继电器式接线G727继电保护装置的G6817G1328方式G18331G11004交流G6817G1328电G9316供电中的“去G2010流跳闸”G6817G1328方式G708接线G12628单，灵敏可靠G709G727G5114G7114G19492过电流保护G18331G11004反G7114G19492过电流保护装置G452型号都G18331G11004GL25/10G452其优点是G726继电器数量大G1038减少，G13792且可G2528G7114实现电流G17907断保护，可G18331G11004交流G6817G1328，运G15904G12628单经济，G6249资大大降低G452此次设计G4557变压器装设过电流保护、G17907断保护装置G727G3324低压G1403G18331G11004G11468G1863断路器实现三段保护G4521变压器继电保护变电所内装G7389两台10/04KV1000KVA的变压器G452低压母线G1403三G11468短路电流G1038328213KIKA，高压G1403继电保护G11004电流G1126G5875器的变G8616G1038200/5A，继电器G18331G11004GL25/10型，接成两G11468两继电器方式G452G991G19766整定该继电器的G2172G1328电流，G2172G1328G7114G19492和G17907断电流倍数G452A过电流保护动作电流的整定13,08,RELREKK1WK，200/540IKMAX12241000/31023095LNTIIKVAKVA故其G2172G1328电流G726131230959380840OPIAAG2172G1328电流整定G10389AG452B过电流保护动作时限的整定G11013G1122此变电所G1038终端变电所，G3252此其过电流保护的10倍G2172G1328电流的G2172G1328G7114G19492整定G103805SG452C电流速断保护速断电流倍数整定17G247415,RELKMAX28213040/1011285KIKAKVKVA，故其G17907断电流G1038G72615111285423240QBIAAG3252此G17907断电流倍数整定G1038G7264232479QBNG4522）10KV侧继电保护G3324此选G11004GL25/10型继电器G452G11013以G990条件得计算数据G726变压器一次G1403过电流保护的10倍G2172G1328G7114G19492整定G103805SG727过电流保护G18331G11004两G11468两继电器式接线G727高压G1403线路G20330端的三G11468短路电流G10382614KAG727变G8616G1038200/5A保护G11004电流G1126G5875器G2172G1328电流G10389AG452G991G19766G4557高压母线G3800的过电流保护装置1KAG17839G15904整定G452G708高压母线G3800继电保护G11004电流G1126G5875器变G8616G1038200/5AG709整定1KA的G2