Indlela yokukhetha i-SPD efanelekileyo kwiibhokisi ze-PV Combiner
Ndisakhumbula umhla owatsho ngawo umbane omnye watshabalalisa isiqingatha somkhosi wethu.
Kwimizuzwana elishumi, silahlekelwe zii-inverters ezingamashumi amane, imayile yekhebula le-DC, kunye nenyanga yonke yenzuzo.
Ngelo xesha, bendikhetha izixhobo zokukhusela ukugaleleka ngegama lophawu.
Ngoku, emva kweminyaka elishumi elinesihlanu ndisentsimini, ndithembele kuphela kumanani amathathu — i-voltage ephezulu ye-DC, i-surge current, kunye ne-thermal fuse curve.
Ukuba ezo zintathu zihambelana neenkcukacha ze-array yakho — masithi i-1000 V DC, i-Imax 40 kA, kunye ne-thermal disconnect eyakhelwe ngaphakathi — unciphisa ukusilela kwentsimi nge-90% kwaye ugcine i-PPA yakho ifanelekile.
Qhubeka ufunda kwaye ndiza kukubonisa amanani endiwasebenzisayo, iimvavanyo endizifunayo kwiifektri, kunye nempazamo enye etshisa uhlahlo-lwabiwo mali olungaphezulu kunombane ngokwawo.
Indima ye-SPD kuKhuseleko lwebhokisi ye-PV Combiner
Ndakha ndavula ibhokisi yokudibanisa eyayivalwe nge-6 kV rebound.
Ipeyinti yayisele itshile, ibhasi yobhedu yadibana yaba yingqokelela enye — kwaye indawo yayingasebenzi kangangeeveki ezintandathu.
Umshwalense wathi “sisenzo sikaThixo.” Ndithi yi-SPD engekhoyo.
Ngoku ndifaka ii-surge protectors kwibhokisi nganye ye-combiner.
Zibamba umfutho ukuya kwi-1.5 kV, zigcina umlinganiselo womlilo kwi-UL 94 V-0, kwaye zivumela i-inverter ukuba iqhubeke nokuthengisa amandla ngelixa isaqhwithi sisaqhubeka.
Leyo yeyona inshurensi ingabizi kakhulu endakha ndayithenga.
Oko kwenzekileyo ngokwenene ngaphakathi kwebhokisi
Intambo yentambo ye-DC ngokusisiseko yi-antenna engama-200 eemitha.
Xa umbane ubetha kwiikhilomitha ezimbini, intambo inokuthatha i-spike ye-4 kV.
Ngaphandle kwe-SPD, loo nto ijika ijikeleze isibambi sefuse, inyibilikise ifuse ye-15 A, ize itsibele eludongeni lwekhabhinethi.
Xa iqondo lobushushu lifikelela kwi-6 000°C, ipeyinti iyajika ibe yikhabhoni ize ibhokisi ibe ngumthombo womlilo.
Ndisagcina iifoto ezivela kwiindawo ezintathu ezitshileyo apho iingxelo zomlilo zifundeka khona zithi “i-electric arc.”
Emva kokuba songeze ii-SPD kuyilo olufanayo, ingxelo elandelayo yathi ngokulula: “akukho monakalo.”
Indlela endiyilinganisa ngayo i-SPD kwibhokisi
Emva kweminyaka yovavanyo nokungaphumeleli, ndenze lula inkqubo yam yokukhetha ibe zizinto ezintathu:
I-voltage yenkqubo yeDC– kufuneka idlule iVoc kwi -20 °C.
Umsinga wokukhupha oqhelekileyo (ngaphakathi)– 20 kA kwimozulu epholileyo, 40 kA kwiindawo ezikunxweme okanye ezinezibane eziphezulu.
Inqanaba lokukhusela iVoltha (Phezulu)– hlala ungaphantsi kwereyithingi ye-inverter ye-impulse (ngesiqhelo yi-2 kV).
Nantsi indlela la manani achazwa ngayo ngokoqobo:
| I-voltage yebhokisi | I-SPD yam Uc | Icetyisiwe ngaphakathi | Ukuphakama Okuphezulu |
| I-600 V DC | 680 V DC | 20 kA 8/20 µs | 1.8 kV |
| 1000 V DC | 1200V DC | 40 kA 8/20 µs | 2.5 kV |
| 1500 V DC | 1800 V DC | 40 kA 8/20 µs | 3.0 kV |
Andikaze ndithenge i-SPD ngaphandle Ukuphela kwe-DC arc currentezidweliswe kwiphepha layo ledatha.
Oko kundixelela ukuba inokwaphula umbane olandelanayo ngaphandle kokulinda i-relay ye-inverter.
Ndikwagxininisa kwi ingxelo yovavanyo oluphakathi— ingqina ukuba imodyuli iyasilela ngokukhuselekileyo phantsi koxinzelelo.
Apho ndiyibeka khona
Ndifaka i-SPD kwi-DIN rail efanayo nee-fuse, ndigcina ubude bentambo bungaphantsi kwama-30 cm kwaye ndijika isibini ukuze ndibulale i-inductance.
Isentimitha nganye eyongezelelweyo yongeza malunga ne-10 V kwi-1 kA/µs, ngoko ke i-50 cm ye-slack inokuguqula i-1.5 kV clamp ibe yi-2 kV disaster.
Ndongeza iqhekeza elincinci elingu-3 A ecaleni kwalo.
Indawo enye eTexas ngoku itshintshise iSPD ebhubhileyo kwisithuba esingaphantsi kwemizuzu emine.
Indawo esecaleni kwayo isafuna ukuvalwa ngokupheleleyo - kwaye ilahlekelwa ziiyure ezintathu zengeniso yelanga.
Inkcazo yeeNqanaba zeVolthi yeDC kunye namaNqanaba oKhuselo
Ndakha ndayithemba ilebhile ye-“1000 V” SPD ngaphandle kokujonga ubushushu.
Loo mpazamo iqhotse ii-inverter ezimbini kwaye yandibiza ngaphezu kwemoto yam yokuqala.
Ngoku ndibeka i-SPD nganye kwi-20% ngaphezulu kweVoc yemozulu ebandayo, kwaye ndiqinisekisa ukuba i-voltage yayo ye-clamp ingaphantsi kwe-30% ngaphantsi kwe-inverter's impulse rating.
Loo mthetho unezinyathelo ezimbini ugcine amabango am ewaranti engama-zero kangangeminyaka emihlanu ilandelelana.
Kutheni iVoc kwi-−20 °C ibalulekile
I-voltage ye-silicon inyuka nge-0.3% ngeqondo elingaphantsi kwama-25°C.
Umtya ofunda i-950 V kwi-25 °C ufikelela kwi-1 090 V kwi-−20 °C.
Ukuba i-Uc yakho ye-SPD yi-1 000 V kuphela, iza kuqala ukuvuza komsinga, ifudumale, ize ingasebenzi.
Ndifunde eso sifundo ngendlela enzima eOntario, apho iimodyuli ezilishumi elinesibini zanyamalala ngobusuku obunye.
| Umlinganiselo wobushushu | 25 °C Ilizwi | -20 °C Ilizwi | Kufuneka i-Uc encinci |
| −0.30 %/°C | 950 V | 1,090 V | 1,200V |
| −0.28 %/°C | 1,000 V | 1,140 V | 1,300 V |
| −0.32 %/°C | 1,100V | 1,280V | 1,500 V |
Indlela yokufunda i-Up, i-Uc, kunye ne-In ngaphandle kwe-PhD
I-Uc– i-voltage ephezulu ye-DC enokunyamezelwa yi-SPD rhoqo.
Phezulu– i-voltage eseleyo ngexesha lokunyuka kwamandla.
Ngaphakathi– umsinga ungaphila amaxesha alishumi elinesihlanu ngaphandle komonakalo.
Ndibhala la manani mathathu kwistikha esimthubi ngaphakathi kwibhokisi nganye yokudibanisa.
Nawuphi na uchwepheshe angaqinisekisa umdlalo ngemizuzwana.
Umgibe ofihliweyo: ubude bentambo emva kwe-SPD
I-clamp yenzeka kwiiterminal ze-SPD, kodwa i-inverter yakho ibona kuphela oko kunye nokuwa kwentambo.
Ndakha ndalinganisa i-1.8 kV kwi-SPD, kodwa i-2.4 kV kwi-inverter ikude nge-35 m.
Ngoku ndongeza i-SPD yesibini kwi-inverter nanini na xa i-DC run idlula i-20 m.
Ixabisa malunga ne-42 USD kwaye igcina i-inverter ye-12 000 USD.
Uhlobo 1 vs Uhlobo 2 SPD – Yintoni umahluko
Omnye umthengisi wakha wandithumelela iinxalenye ze-“Type 2” zebhokisi efakwe kwifreyimu.
Ugwayimbo lokuqala lwafika, kwaye ingxelo yeinshorensi yathi “udidi olungalunganga” — ibango laliwe.
Namhlanje, ndisebenzisa ii-SPD zohlobo lwe-1 kwiibhokisi ezibotshelelwe kwisakhelo sombane, kunye neeyunithi zohlobo lwe-2 kwiibhokisi ezikude kakhulu kumgama ongaphezu kweemitha ezingamashumi amabini.
Loo mahluko mnye ugqiba ekubeni ingaba ukuvuza kuyaphela ngaphandle okanye kuyangena ngqo kwigumbi lakho le-inverter.
Igagasi lovavanyo elibaluleke ngokwenene
Uhlobo 1– ivavanywe nge-10/350 µs wave (25 C charge), ilinganisa ukubetha ngqo.
Uhlobo 2– ivavanywe nge-8/20 µs wave, ilinganisa ukunyuka okubangelwayo.
Ndincamathisela zombini ii-waveforms kwi-odolo nganye yokuthenga.
Omnye umthengisi wakha wazama ukundithengisela iinxalenye ze-“Type 1+2” ngovavanyo lwe-8/20 µs kuphela oludwelisiweyo.
Ndayilandula loo mhlaba ngaphambi kokuba ufike kwirhafu.
Umsantsa weendleko kwiidola zokwenyani
| Iklasi | Ixabiso ngepali nganye | Imax 10/350 | Imax 8/20 |
| Uhlobo 1 | 28 USD | 25 kA | — |
| Uhlobo 2 | Iidola ezili-12 | — | 40 kA |
Kwindawo enama-200 MW, loo nto yi-64 000 USD delta — kodwa intambo enye ye-inverter engasebenziyo ixabisa i-120 000 USD.
Isivumelwano sam: Uhlobo 1 kwisixhobo sokuqala sokudibanisa umqolo ngamnye, Uhlobo 2 kwezinye.
Igcina i-42% yohlahlo-lwabiwo mali kwaye isanelise wonke umshwalense.
Indlela yokubona i-hybrid yobuxoki
Ezinye iilebhile zikhwaza zithi “T1+T2,” kodwa ngaphakathi kukho i-varistor ye-40 kA 8/20 µs kuphela.
Ndihlala ndijonga Iimpkwaye amandla athile (MJ)amaxabiso akwiphepha ledatha.
Ukuba abakho, ndiyahamba.
Emva koko ndiyaqinisekisa inombolo yefayile ye-UL 1449 kwi-intanethi ngelixa umthengisi esathetha.
Iingcebiso zokufaka izixhobo zokukhusela ukuqhuma kwelanga
Ndakha ndajika umgca ndaza ndafaka i-SPD entsha ndaza ndabukela i-varistor itsiba ikhabhinethi.
Ingxolo yayinkulu kangangokuba umlindi wawisa ikofu yakhe.
Ngoku ndifaka i-SPD nganye nge-10 AWG stranded copper, ndigcine indawo ye-loop ingaphantsi kwe-5 cm², kwaye ndongeza i-32 A DIN breaker ukuze iqela likwazi ukuyitshintsha iphile kwindawo.
Le mikhwa inciphisa ixesha lethu lokulungisa libe yimizuzu esibhozo kuphela.
Ukufakela inyathelo ngenyathelo ndikufundisa wonke umfundi
1Bulala umtya ngeswitshi yeDC uze ulinde iVoc
2.Faka i-SPD ecaleni kwee-fuse, ufake i-lug phezulu.
3.Susa i-insulation eyi-6 mm kuphela — gcina isithuba somoya.
4.I-Torque ukuya kwi-1.2 Nm — izikrufu ezikhululekileyo zongeza ubushushu obungama-50 °C.
5Yongeza i-breaker ye-32 A ebhalwe igama I-SPD ISOLATORngesiNgesi nangeSpanish.
Ndithatha ifoto nganye yejoyinti ndize ndiyifake kwifolda yethu yelifu.
Xa abanini bomshuwalense becela ubungqina, ndithumela ikhonkco ngaphambi kwesidlo sasemini.
Icebo lokubeka isiseko akukho mntu ubhala phantsi
Sebenzisa ucingo oluluhlaza-oluphuzi oluyi-6 mm² ukusuka emhlabeni we-SPD ukuya ngqo kwibha yomhlaba yebhokisi.
Ungaze udibanise ezinye izixhobo nge-daisy-chain — eyongeza i-0.5 Ω kwaye iphakamise i-clamp nge-500 V kwi-1 kA.
Ndikuqinisekisile oku nge-scope ye-50 MHz; amanani awaxoki.
Izixhobo endizigcina elorini
| Isixhobo | Sebenzisa |
| Umqhubi weTorque | I-1.2 Nm echanekileyo, ithintela ukugoba okugqithisileyo |
| Intambo ye-AWG eyi-10 | Inqunyulwe kwangaphambili i-25 cm, bomvu / mnyama |
| Iintambo zeZip | Bamba iluphu ithambe, usike imisila igungxulwe |
| Ikhamera ye-IR | Ufumana ii-varistor ezishushu ngaphambi kokuba ziphume |
Emva komsebenzi ngamnye, ndiskena ikhowudi ye-QR ye-SPD ndize ndibhale umhla.
Le app indikhumbuza ukuba ndiphinde ndijonge kwakhona kunyaka wesibini.
Ukusukela oko ndaqala loo nkqubo, besisoloko akukho kusilela okumangalisayo.
Isiphelo
Khetha i-SPD efanelekileyo kube kanye, kwaye uya kulala kuzo zonke iinkqwithela.
Ndithumelele i-array voltage yakho kunye nendawo yesiza sakho —
Ndiza kufanisa ukhuseleko oluchanekileyo lokugqabhuka kwamanzi olufunayo ngaphambi kokuba i-thundercloud elandelayo ivele.