Ungasikhetha njani isixhobo soMkhuseli weSolar DC?

Yintoni indima yabakhuseli botyando lwe-solar DC?Ndicinga ukuba uninzi lwabayili bombane bacace gca.Umbane njengentlekele yendalo enzima, ukwenzeka kombane obangelwa yi-overvoltage overcurrent edlulayo kulula kakhulu ukubangela umonakalo kwisixhobo sombane wesakhiwo, ngokukodwa izixhobo zombane, okubangelwa ilahleko yezoqoqosho ngokuthe ngqo kunye nokungathanga ngqo kwishishini.Ke ngoko, ukukhuselwa kombane kunye nokukhuselwa kokhuseleko kwitekhnoloji yokukhusela i-surgery ibe yindawo eshushu yangoku.Ke, abakhuseli botyando beDC kufuneka babe njani ukukhetha?

Ngophuhliso lwetekhnoloji, iimveliso ze-elektroniki ziya zihluka ngakumbi nangakumbi, kwaye izicelo zabo ziya zisanda.Nangona kunjalo, inqanaba lokuxhathisa amandla ombane wokutya kwezi mveliso ze-elektroniki lingaphantsi kunelo lezixhobo zokuhambisa amandla ombane asezantsi, ngoko ke zisesichengeni sokuguquguquka kwamandla ombane, oko kukuthi, umonakalo osuka kumandla ombane wokutya.Oko kubizwa ngokuba yi-surge, ekwabizwa ngokuba yi-overvoltage edlulayo, kukuguquguquka kwamandla ombane okwethutyana okwenzeka kwisekethe kwaye kunokuhlala malunga nesigidi esinye sesekondi kwisekethe, njengakwimozulu yombane, imibane yombane inokuqhubeka nokuvelisa amandla ombane. ukuguquguquka kwisekethe.

Inkqubo yesekethe ye-220V iya kuvelisa ukuguquguquka okuzinzileyo kwamandla ombane anokufikelela kwi-5000 okanye i-10000V, ekwaziwa njengokunyuka okanye ukugqithisa kwamandla okwethutyana.Iindawo ezingakumbi zombane e-China, kunye nombane njengento ebalulekileyo ekuveliseni i-voltage ye-surge kumgca, ngoko ke kuyimfuneko ukuqinisa ukhuseleko lombane kwinkqubo yokusabalalisa i-voltage ephantsi.

        SPD surge mkhuseliukuba umkhuseli overvoltage, umgaqo osebenzayo kukuba xa intambo yamandla, umqondiso transmission line transient transient overvoltage, surge protector iya kuba overvoltage drain ukukhawulela amandla ombane kuluhlu lwamandla ombane esinokuthi isixhobo sixhathise, ngaloo ndlela sikhusela izixhobo kwizothuso zombane.

Umkhuseli we-surge kwiimeko eziqhelekileyo, kwindawo ephakamileyo yokumelana, akukho ukuvuza kwangoku;xa kukho i-overvoltage kwisekethe, umkhuseli we-surge uya kuqaliswa ngexesha elifutshane kakhulu, ukuvuza kwamandla angaphezulu, ukukhusela izixhobo;i-overvoltage iyanyamalala, umkhuseli wokuqhafaza ukubuyisela imeko ephezulu yokumelana, ayiyi kuchaphazela unikezelo lwamandla oluqhelekileyo konke konke.

Amanqaku oYilo loMkhuseli we-DC Surge kunye neeFom zocingo

1. Iintsilelo zoYilo lwesiXhobo soMkhuseli weSurgery

Okwangoku, uyilo lomkhuseli we-solar surge we-dc kusekho iziphene ezininzi kulwakhiwo olwenyani olubangele iingxaki ezininzi, kwaye lwade lwabangela ukuba iprojekthi ilibaziseke, ngolu hlobo lulandelayo:

1) Inkcazo yoyilo ilula kakhulu, intsingiselo ayichazwanga ngokucacileyo, kwaye iimfuno zofakelo azicaci ngokwaneleyo, ezinokubangela ukungaqiniseki okukhulu ngexesha lokwakha kwaye kunokubangela umonakalo okanye ilahleko yezoqoqosho kwisixhobo sombane. ekhuselweyo.

2) Uyilo lwe-DC surge mkhuseli aluguquguquki ngokwaneleyo, kwaye ngamanye amaxesha luze lusetyenziswe ngokuthe ngqo kwimizobo yokwakhiwa kombane esisigxina, engasekelwanga kwinkqubo yokumisa inkqubo yokuhambisa yoyilo ekujoliswe kuyo, kunokukhokelela ekukhuselweni komkhuseli kwi-wiring ethile. iimpazamo zokufakela.

3) kwidayagram yenkqubo yokusasaza, iparamitha yoyilo lokhuselo lokunyuka ayigqibekanga, njengenqanaba lokhuselo lombane UP, nokuba bubungqina bokudubula, ubuninzi bombane osebenzayo we-Uc kunye nezinye iiparamitha ezibalulekileyo aziyilwanga, okanye ezinye iiparamitha azichanekanga. , okubangelwa ukusebenza kwangempela kokusilela komkhuseli wokunyuka okanye umonakalo kwisixhobo sombane.

4) Iinkcukacha zoyilo azichazwanga.Ngokubanzi, ukuba nenkcazo eneenkcukacha yoyilo lomkhuseli wokuqhafaza kwincwadi yoyilo, njengombono weprojekthi yokwakha, isiseko soyilo, nokuba kubandakanywa iinkqubo zolwazi lwe-elektroniki, inqanaba loyilo loyilo lwesixhobo somkhuseli.

2. Amanqaku oyilo lwe-SPD Surge Protector

I-1) Inkcazo yoyilo lwe-SPD yokukhusela i-surge: inkcazo yeprojekthi, ulwahlulo lokukhusela umbane, isiseko soyilo, iinkqubo zolwazi lwe-elektroniki, inqanaba lokukhusela umbane, inkqubo yokumisa, indlela ikhebula elingena ngayo ekhaya, iimfuno zokuxhathisa umhlaba, njl.

2) Dwelisa indawo yofakelo lomkhuseli wokutya, inombolo yebhokisi yombane, inqanaba lokhuseleko, inani, iiparameters ezisisiseko (ukukhutshwa okukhoyo ngoku ngaphakathi okanye kwi-inrush yangoku limp, ubuninzi bombane osebenzayo u-Uc, inqanaba lokhuselo lombane phezulu), njl. .

3. Inkqubo yokusabalalisa kwiFomu ye-Surge Protector Wiring

Inkqubo yokusasazwa kwe-voltage ephantsi yokutsala inkqubo yomhlaba ine-IT, TT, TN-S, TN-CS ezine iifom, ngoko ke SPD umkhuseli surge ukuba isekelwe kwinkqubo yokumisa ezahlukeneyo inkqubo yonikezelo low-voltage kwaye ukhethe umzobo wiring eyahlukileyo, ngokuba umzekelo, xa usebenzisa inkqubo yokusabalalisa amandla e-TN AC, imigca yokusabalalisa ekhokelela kwibhokisi yokusabalalisa iyonke kwisakhiwo kuya kufuneka isebenzise inkqubo ye-TN-S.

Yeyiphi imiba omawuyiqwalasele xa ukhetha isiXhobo soMkhuseli we-DC Surge?

Xa iintambo zamandla eziphantsi-voltage ukusuka kwigridi yekhaka eliphezulu esekelwe intambo okanye intambo engcwatyiweyo, ayinakufakwa SPD umkhuseli surge.Kwaye xa yonke okanye inxalenye yemigca yamandla ephantsi-i-voltage yemigca ephezulu, kunye nommandla wemihla yokuduma kwezulu ngaphezu kwe-25d / a, ngeli xesha ukufaka izikhuseli zokuqhafaza ukuthintela ukugqithiswa kwe-voltage kunye nemigca yombane ngenxa yokuqaliswa kweempembelelo zombane, ukuze inqanaba le-overvoltage lingaphantsi kwe-2.5kV.

Isixhobo somkhuseli weSurge ifakwe ngokubanzi kunikezelo lwamandla kumgca ongenayo, indawo yofakelo lwaso lunokuba izixhobo zombane zangaphakathi, kodwa nakwimeko yesebe losasazo lwesizwe livumile ukuba lifakwe kumgca wamandla okufutshane ukusuka kwisakhiwo, ukuba yi, ifakwe kumgca ongaphezulu kumgca wentambo.Ukuba izixhobo ze-elektroniki ngokuchasene ne-overvoltage zineemfuno eziphezulu, okanye ukugqithiswa kwe-voltage kuya kukhokelela kwiziphumo ezibi kakhulu, njengokukwazi ukwenza uqhushumbo okanye umlilo, okanye izixhobo zombane ezibalulekileyo zokumelana nomthamo we-overvoltage uphantsi kakhulu, kodwa kufuneka kwakhona ukwandisa ukufakwa kwezikhuseli zotyando.

Kwinkqubo yonikezelo lwe-voltage ephantsi ukukhetha isixhobo somkhuseli we-DC wokutya xa ezona zinto ziphambili ekufuneka ziqwalaselwe zezi zilandelayo:

(1) Ukumisela inqanaba lokhuseleko lombane phezulu kwi-DC surge protector.Inqanaba lokukhuselwa kwamandla ombane Phezulu libhekiselele kumbane ophezulu kuzo zombini iziphelo zomkhuseli wokutya okulinganiswe xa ukukhutshwa okuqhelekileyo kusebenza ngoku, ngokubanzi kwahlulahlulwe kumanqanaba ama-2.5, 2, 1.8, 1.5, 1.2, 1.0, iyunithi ye-kV.Ukuze kuthintelwe izixhobo zombane ukuba zingonakaliswe ku-overvoltage, okokuqala sithathela ingqalelo ukuba amandla ombane okumelana nesixhobo sombane esikhuselweyo kufuneka abe mkhulu kunomgangatho wokhuselo lombane phezulu komkhuseli wotyando.

(2) isixhobo somkhuseli sokutshiza usebenzisa imowudi yokukhusela epheleleyo.Oko kukuthi, ukuya kwi-L-PE, i-LN kunye ne-LL line zifakwe phakathi komkhuseli wokunyuka ukuze kudlale ukhuseleko olubanzi lomgca, onokukhusela i-pulse yombane kungakhathaliseki ukuba yeyiphi umgca phakathi kwe-overvoltage, iya kwenza ukuba izixhobo zombane zisebenze ngokufanelekileyo. ekhuselweyo.Kwangaxeshanye, ukuvulwa kwendlela epheleleyo yokhuseleko lomkhuseli wokutyanda kunokukhuselwa ngaxeshanye ukunqanda ukuqala komkhuseli wotyando kumahluko owenziwe ngumonakalo owakhe, ngaloo ndlela ukwandisa ubomi bomkhuseli wotyando.

(3) Khetha owona mbane uphezulu uzinzileyo wokusebenza u-Uc womkhuseli wokutyanda.Awona mandla ombane osebenzayo azinzileyo aphezulu abhekisa kumandla ombane aphezulu anokusetyenziswa ngokuqhubekayo kumkhuseli wokutya ngaphandle kokubangela utshintsho kwiimpawu zomkhuseli wokutya kunye nokuqhuba umkhuseli wokutyanda.

(4) Khetha ubuninzi obufanelekileyo bangoku bokukhutshwa komkhuseli wokutya ngokweempawu zokusingqongileyo zesiza.Ubuninzi bokukhutshwa kwangoku kuthetha ukuba umkhuseli wokunyuka unokudlula kuphela i-peak current ye-wave yangoku ye-8/20μs kabini ngaphandle komonakalo kumkhuseli wokunyuka.Ngapha koko, umkhuseli we-DC wokutyanda unowona mkhulu wokukhupha okwangoku.

Uhlalutyo loKhuseleko lwe-SPD Surge Protector

SPD Surge umkhuseli nangona ukukhuselwa kwezixhobo ze-elektroniki ukusuka kumonakalo ogqithisiweyo kuye kwadlala indima enkulu kakhulu, kodwa ngenxa yokuba i-overvoltage eyenziwe ngesekethe ngamanye amaxesha inokugqithisa uluhlu lomkhuseli wotyando, ngoko xa umkhuseli wotyando esebenza ixesha elide kwi-overvoltage state, nazo ziyakonakaliswa ngokwamanqanaba ahlukeneyo, ezi zichatshazelwa kakhulu kubomi benkonzo yomkhuseli wokutyanda.Ngokomzekelo, xa i-overvoltage edlulayo iphezulu kakhulu, umkhuseli we-surgery unokugqobhoza kwaye abangele isiphaluka esifutshane, njengoko kubonisiwe kumzobo.

Ukuba ifowuni yokukhusela i-surge ayixhunyiwe kwi-series kunye ne-circuit breaker, i-breaker line-D1 iya kuhamba ngokuzenzekelayo, njengoko i-lcc ye-fault yangoku isekho, kuphela emva kokuba umkhuseli wokunyuka utshintshwe, umgca we-short circuit breaker D1 uya kuvala kwakhona, ukuze inkqubo ilahlekelwe kukuqhubekeka konikezelo lwamandla.Isisombululo kule ngxaki kukudibanisa i-breaker circuit breaker kwi-series kunye nesiphelo esiphezulu somkhuseli wokunyuka , ukukhetha i-breaker circuit breaker ilinganiswe ngoku ngokuhambelana nobuninzi bokukhutshwa komkhuseli wokutya ukuze i-breaker circuit isebenze ngokufanelekileyo, kwaye ijika elijikayo lithatha uhlobo lwe-C, kwaye umthamo walo wokuqhawula kufuneka ube mkhulu kunobuninzi be-short-circuit current ekufakeni.Njengoko kubonisiwe kwitheyibhile:

Isiqhelo esiqhekekileyo sesekethe esiqhekezayo sangoku asisikhulu kune-10kA, itheyibhile inokubonwa ngokukhetha i-breaker circuit encinci kunzima ukuhlangabezana nomthamo wokuqhawula kufuneka ibe mkhulu kunobuninzi be-short-circuit current ekufakeni.Ke ngoko, ukusetyenziswa kweefuses ukukhusela umkhuseli wokutyanda lukhetho olufanelekileyo!

Isishwankathelo

Amandla ombane onyukayo axhaphakile.Ngokwezibalo, ukugqithiswa kwe-surge overvoltage kwenzeka rhoqo ngemizuzu eyi-8 kwigridi yesizwe, kwaye i-20% -30% yokusilela kwekhompyuter kubangelwa kumbane wokunyuka, ngoko ke uyilo lokhuseleko lokunyuka luyimfuneko kakhulu.Uyilo lokhuselo lweSurge luyilo lokuthintela, ekuphela kwendlela yokukhusela izixhobo zethu kumonakalo ogqithisiweyo kancinci kangangoko.Uyilo lwesixhobo sokukhusela i-solar DC kufuneka siqwalasele ngokubanzi izinto ezahlukeneyo ezinempembelelo.Kungale ndlela kuphela apho umkhuseli wotyando anokuthi adlale indima enkulu yokukhusela kwaye akhusele ngokufanelekileyo izixhobo ze-elektroniki kumonakalo ogqithisiweyo.