盈多多彩票

光伏阵列保护用熔断器的选择分析_W12发动机

发布时间:2019-12-20    信息来源:nanofib.com    作者:儒安机械

  光伏(solar photovoltaic,简称PV)发电系统是由能把入射的光能直接转换为电能的部件和子系统构成。其中的光伏阵列是将入射的太阳辐射直接转化为直流电能的单元,太阳能板组成的阵列和光伏阵列连接箱连接,光伏电流经连接箱汇流后输出到逆变或直接应用环节。光伏发电系统约有70%的成本在光伏太阳能板组成的光伏阵列,而从对光伏阵列的保护和如何充分提高发电效率成为技术的重点之一。

  WEISHIXIANGENGGAOXIAOLV,YAOYOUDUOGEGUANGFUBANCHUANLIANCHENGGUANGFUCHUAN,DUOGEGUANGFUCHUANBINGLIANCHENGGUANGFUZHENLIE,GUANGFUZHENLIENEIGEGUANGFUCHUANDIANLIUHUIJIDAOGUANGFUZHENLIELIANJIEXIANG,ZAIBINGLIANZAIGUANGFUFADIANQILIANJIEXIANG,QISHUCHUGONGZHIJIEYINGYONGHUOJINGNIBIANDENGCHULI。WEIJISHIGELIGUANGFUBANCHUXIANGUZHANGDEGUANGFUCHUAN,TIGAOFADIANXIAOLV(GUANGFUBANCHUXIANGUZHANGBUFADIANSHI,ZECHENGWEIXIAOHAODIANNENGFUZAI),YEWEIWEIBIMIANANZHUANGJIEDUANCUOJIEHUOQITAYUANYINYINQIJUBUYICHANGJIEXIANXINGCHENGDEGUOLIUWEIHAI,ZAIMEIYIGUANGFUCHUANDELIANGDUANANZHUANGLEBAOXIANSIHOU,YOUYUGUANGFUZHENLIEDUANLUDIANLIUDAYUDANGEGUANGFUCHUANDEDIANLIU,YINERKEZHIGUANGFUCHUANCHUANLIANDEBAOXIANSIRONGDUANYIGELIGUZHANGGUANGFUCHUAN。ZAIZHENLIESHEZHIRONGDUANQI,DUIYUXIAJINIBIANQIYUANJIANFANKUIDEDIANLIU(RUDIANRONGHUOZHEDIANRONGQIFANKUIDAOGUANGFUZHENLIEHEZHENLIEBUXIANDEFANGDIAN),ZAIRONGDUANQIDEEDINGFENDUANNENGLIFANWEINEIYENENGDUIGUANGFUZHENLIETIGONGBAOHU。

  GUANYUZAIGUANGFUXITONGZHILIUCEDEBAOHU,ZAIMEIGUOGUOJIABIAOZHUNNASI/NFPA 70 《NaTIonal Electrical Code 》ZHIArTIcle 690-Solar Photovoltaic SystemsZHONGDE690.99TIAOKUAN(Overcurrent ProtecTIon)ZHONGYIMINGQUE:GUANGFUZIXITONGDIANLU、GUANGFUSHUCHUDIANLU、NIBIANQISHUCHUDIANLUHECHUNENGDIANCHIDIANLUDEDAOTIHESHEBEIYINGDANGANTIAOKUAN240YAOQIUYUBAOHU(ZHU:TIAOKUAN240GUANYUDAOXIANHESHEBEIDEBAOHUTIAOWEN);WOGUODENGTONGCAIYONGIEC60364-7-712:2002《Electrical installaTIons of buildings-Part 7-712:Requirments for special installations or locations-Solar photovoltaic (PV) power supply systems》DEGB/T 16895.32-2008《JIANZHUWUDIANQIZHUANGZHI DI7-712BUFEN:TESHUZHUANGZHIHUOCHANGSUODEYAOQIU TAIYANGNENGGUANGFU(PV)DIANYUANGONGDIANXITONG》(2010-02-01ZHENGSHISHISHI),QIZHONGSUIZAIZHILIUCEDEGUOFUHEBAOHUZHONGTICHUDANGDIANLANDELIANXUZAILIULIANGDENGYUHUODAYURENHEWEIZHI1.25BEIDEIsc stcSHI(Isc stcWEIBIAOZHUNCESHITIAOJIANXIADEDUANLUDIANLIU),PVCHUANHEPVZHENLIEDIANLANDEDAOGUOFUZAIBAOHUKEYIHULVE(GAIWEIBIAOZHUNDE712.433.1HE.2),DANSHIBIAOZHUNTONGSHIZHUMING:SHANGSHUYAOQIUJINSHIGUANYUDIANLANBAOHUDEGUIDING,TONGSHIYEYAOKAOLVZHIZAOCHANGGUANYUPVMOKUAIBAOHUDESHUOMINGSHU;QIZAIGUANYUGUANGFUZHENLIELIANJIEXIANG( PV array junction box)DEDINGYIZHONGYECHANMINGRUXUYAOYEKEYONGRONGDUANQIBAOHU。GB/T 16895.32-2008WEIYINGXINGGUIDINGYAOSHEZHIBAOHUDIANQIDEYUANYIN,YIFANGMIANSHIBIAOZHUNZHIGUIDINGZUIDIXIANDUDEYAOQIU,BAOZHENGSHIXING;DANLINGYIZHUYINSHIXIANGGUANBIAOZHUNHAIZAIZHIDINGZHONG。

  ZHUANMENZHENDUITAIYANGNENGGUANGFUXITONGBAOHUYONGDERONGDUANTIBIAOZHUNIEC 60269-6:2010,JINNIAN10YUEIECWEIYUANGUOYITOUPIAOTONGGUO,2011NIAN1-2YUEFENJIANGYOUKENENGCHUBAN,GUOJIABIAOZHUNYEJIANGGENJINZHIDING;ULZAI2005NIANHUOGENGZAOJIUYISHELILEBAOHUGUANGFUDIANCHIZUJIANCHUANHEGUANGFUZHENLIEDERONGDUANTIDEJISHUGUIFAN :Subject 2529 OUTLINE OF INVESTIGATION FOR LOW-VOLTAGE FUSES-FUSES FOR PHOTOVOLTAIC SYSTEMS,XIANQIZUIXINBANSHI2010BAN。ZHEIXIEXIANGGUANBIAOZHUNDEBANBU,YUSHIZHEBAOKUOZHONGGUOZAINEIIECGECHENGYUANGUOHOUXUXIANGGUANDEBIAOZHUNHEANGUIRENZHENGYAOQIUKENENGJIANGHUIRUNASI/NFPA 70NEIYANGKAOLVZHILIUCEDEGUOLIUBAOHUWENTI,SHISHISHANG,YEJIEXIANYOUDABUFENGUANGFUFADIANXITONGDEGUANGFUCHUANHEGUANGFUZHENLIEDOUYISHEJIANZHUANGLEBAOXIANSI。RUXIATU,HAOLILAIKEJIHOLLYGUANGFUBAOXIANSIHC10aR 1000V DCHEHC10N 600V DC BEIGUANGFANYINGYONGYUPVGUANGFULIANJIEJUZHONGRONGDUANQIAWEIZHI、GUANGFUBAOHUDENH00 1000V 100AHENH1 1000V DC 200AYEBEIYINGYONGYUPVGUANGFULIANJIEJUZHONGRONGDUANQIBWEIZHI。

  

光伏发电系统简约图


  BEIMEIBIAOZHUNNASI/NFPA 70YIMINGQUEGUIDING,ZHILIUCEDEBAOHUDIANQIJUNYAOQIUZHILIUGUIGEDE,DUIYUBAOHUGUANGFUDIANCHICHUANDERONGDUANQI、JITUZHONGDERONGDUANQIA,YAOQIUEDINGDIANLIUIn≥1.56Isc (IscWEIPVCHUANDEDUANLUDIANLIU),EDINGDIANYABUXIAOYUGUANGFUDIANCHICHUANDANGDIZUIDIWENDUSHIDEKAILUDIANYAVoc,BINGTIGONGLEXIUZHENGXISHUGONGJISUANSHIJISHIYONGWENDUXIAVoc;ERBAOHUPVZHENLIEDERONGDUANQIB、QIYAOQIU1.25XIANZHIDIANLIUI ≤In<1.56Isc ,GAIWEIZHIDAOXIANGUIGEYAOBUXIAOYU1.56Isc,SUOYIQUDIANLIU1.56IscJISUANZHIYIXIADEXILIEHUAGUIGEZHONGZUIDADEEDINGDIANLIUSHIHESHIDE。

  IECTIXIDEGUANGFUBAOXIANSIYUEDINGRONGDUANDIANLIUWEI1.45 In、MEIGUOSubject 2529JISHUGUIFANDUIYINGDEGUANGFUBAOXIANSIYUEDINGRONGDUANDIANLIUWEI1.35 In,JIIECTIXIDEGUANGFUBAOXIANSIDESHIJICHENGZAINENGLIYUEWEIMEIGUOSubject 2529BAOXIANSIDE1.1-1.2BEI,YINERKAOLVDAOSHIJICHENGZAINENGLIDEBUTONG,DUIYUTUZHONGDERONGDUANQIAWEIZHIDEIECTIXIDEGUANGFUBAOXIANSIYINGCANKAOSHANGSHUGONGSHIIn≥1.56IscXIUZHENGWEIIn≥1.42Is。SUOYIANXIUZHENGHOUDEGONGSHISUANCHURONGDUANQIGUIGEZHIIn,BINGQUDAYUJISUANZHIQIEHEJISUANZHIZUIJIEJINDEDIANLIUDENGJIDERONGDUANTI,LINGWAIDAOXIANDEGUIGEBUYAOBUDIYUIs,ZUIHAODAYU1.25 Is;TONGLI,DUIYUTUZHONGDERONGDUANQIBWEIZHIDEIECTIXIDEGUANGFUBAOXIANSIYINGCANKAOSHANGSHUGONGSHIIn<1.56IscXIUZHENGWEIIn<1.42Is,QUDIANLIU1.42IscJISUANZHIYIXIADEXILIEHUAGUIGEZHONGZUIDADEEDINGDIANLIUGUIGE。ZAIRONGDUANQIZHOUWEIWENDUJIAOGAOSHI,RUGAOCHU45HUOZAIHUILIUXIANGZHONGKAOJINDIANZHUANGDUOGEBAOXIANSISHI,YINGJIANGRONGSHIYONG,JIANGRONGLIANGANRONGDUANQICHANGJIAJIANYI。

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