Kudzivirirwa kwePV Mheni paSisitimu: Nei SPD Yakakosha
Handimbofi ndakakanganwa zuva iro mheni imwe chete yakarova pasi mwedzi mitanhatu yemutengo panzvimbo ye5 MW muArizona. Flash imwe chete yakaparadza ma inverter makumi mana nemaviri—uye bhonasi yedu yeQ4 yakanyangarika pamwe chete nawo. Chiitiko ichocho chakachinja magadzirirwo andakaita nzvimbo yega yega.
Midziyo yekudzivirira mafungu (SPDs) ndiyo chete nzira isingadhuri yekudzivirira simba remheni kuti risafambe nepakati petambo dzeDC nemabhokisi eAC combiner.Iye zvino ndinoaisa kumativi ese ekushandisa tambo. Kubva ipapo, zvikumbiro zvangu zveinishuwarenzi zvaderera kusvika pazero.
Kana uchikwanisa kushandisa simba rezuva rinodarika 500 kW, ramba uchiverenga. Ndichakuratidza nzira chaiyo yandinosarudza, yandinoisa, uye yandinotenga nayo maSPD kuitira kuti strike ive isina kuitika.
SPD Haisi mudziyo wega wega uripo Masisitimu ePV LPS
Ndaimbobata maSPD semafuse emhando yepamusoro—ndaabatanidza, ndosunga marugs, ndozviti zuva ranhasi. Izvozvo zvakapera mushure mekunge ndarova zvakananga kupfuura maSPD matatu "aive ega" ndikaramba ndichikangwa pakombiyuta yangu yekutarisa. Kukundikana ikoko kwakachinja mafungiro angu zvachose.
SPD chikamu chimwe chete muchikamu chakakwana sisitimu yekudzivirira mheni (LPS).Inofanira kushanda nekubatana, kudzivirira, uye kugadzira ivhu kuitira kuti chimiro chose chisimuke uye chiwire pamwe chete panguva yekukwira kwemvura. Izvi hazvisi dzidziso—izvi ndizvo zvinoitika mumunda.
Sei kufunga kwe "SPD yega" kuchikundikana
Mheni haina hanya nemapepa edata—inotevera nzira dze impedance. Pandakaisa 1 000 V SPD mupurasitiki isina simbi yekumashure, yakangoerekana yaenda kune screw iri pedyo ndokuwana nzira yayo kuMLPE yangu. SPD yakaita nemazvo, asi hurongwayakakundikana nekuti nzvimbo yacho yaiyerera pa40 kV ye3 µs.
Hezvino zvandinosimbirira pabasa rega rega:
1. Chivharo chesimbi chakabatanidzwa kune imwe ground bar yakafanana neinverter.
2. Kureba kwemutobvu pasi pe 0.5 m pamutsetse nepasi.
3. Chisungo chemhete yemhangura ine 6 AWG isina chinhu chinosunga furemu yega yega.
Matanho aya anodhura pasi pemadhora gumi nemaviri patambo imwe neimwe—asi akaderedza kudanwa kwangu kwewebhusaiti ne80%.
Cheni ine zvikamu zvina iyo muongorori wese anoda kuona
Ndinoongorora zvinhu zvina usati wavhara dhatabhesi:
1. Chiteshi chemhepo chiri pamusoro pe tracker yepamusoro-soro.
2. Kondakita yekudzika yakabatana negridi yepasi ye5 Ω.
3. Kubatanidza zvinhu zvesimbi imwe neimwe.
4.SPDs dziri paDC, AC, uye signal lines—imwe neimwe ine thermal disconnect uye IP66.
Kana wapotsa link imwe chete, uchawana tag dzvuku. Iye zvino ndinotora nhanho yega yega ndoibatanidza neO&M binder. Mabhangi anoda magwaro aya—uye mari yangu yekubhadhara yakaderera kubva pamazuva makumi matanhatu kusvika pamazuva makumi maviri nerimwe.
| Chikamu | Standard I follow | Mutengo pa 100 kW |
| Nzvimbo yendege | IEC 62305-3 | $240 |
| Kondakita wepasi | 50 mm² mhangura | $180 |
| Gridhi repasi | 5 Ohms, tsvimbo nhatu | $320 |
| DC SPD | IEC 61643-31 | $560 |
| AC SPD | IEC 61643-11 | $380 |
Maitiro Ekusarudza SPD Yakakodzera Yekuisa PV Yako
Muna Chikumi wadarika, mutengesi akandisundidzira ku600 V units "dzakachipa uye dzinofadza" dze 1000 V string. Mavhiki maviri gare gare, kurohwa kweMOV kwakaitika pedyo—uye garandi ye inverter yakanga isisina basa. Ndakatora kurasikirwa uku ndikagadzira runyorwa urwu rwekutarisa kuti zvisazomboitika zvakare.
Ndinobatanidza zvinhu zvitatu nechinhu chimwe nechimwe: voltage yepamusoro yeDC, current yepfupi, uye level yekuratidzwa kwemheni.Zvadaro ndinosarudza SPD ine Uc iri pamusoro peVoc ne20% uye IImp ye12.5 kA (10/350 µs) kana kupfuura.
Kuyera kwevoltage: mutemo we1 200 V
Ndinoyera Voc mangwanani anotonhora zvikuru egore ndowedzera 20%. MuDenver mhedzisiro yacho yaive 1 080 V, saka ndakakwira kusvika pa1 200 V SPD. Kuchengetedza $4 nekusarudza 1 000 V hakuna kukosha—kukundikana kamwe chete kunodhura maSPD anopfuura 500.
Chiyero chemazuva ano: nei 6.25 kA isingakwanire mapurazi makuru
NEC 690 inongoda 6.25 kA (8/20 µs), asi mapurazi makuru ePV anosangana nezviitiko zve multi-stroke. Ndinoyera Iimp ndichishandisa tafura iyi:
| Saizi yepurazi | KA inotarisirwa kusvika pakakwirira | SPD Iimp I order |
|
| 12.5 kA | 25 kA |
| 100 kW–1 MW | 25 kA | 50 kA |
| > 1 MW | 50 kA | 100 kA |
Kuwedzera kaviri chiyero ichi kunowedzera mari inosvika $9 payuniti imwe neimwe—asi inishuwarenzi yangu yakadzikisa mari yemutero ne15%. Kuderedzwa uku kamwe chete kwakafukidza mutengo weSPD panzvimbo ye6 MW.
Kubviswa kwekupisa uye chiratidzo chiri kure
Ndakamborasikirwa netambo ye75 kW nekuti MOV yakapisa zvakanyanya ikatanga kubatira moto. Iye zvino ndinotenga maSPD chete ane thermal disconnect pamwe ne dry-contact alarm. Ndinoabatanidza neSCADA kuitira kuti timu iwane yambiro usati wasvika kuvavakidzani kunhuhwirira kwepurasitiki yakatsva.
Zvinhu Zvikuru zveSPD zvePV LPS Yakavimbika
Ndakamboona vashandi vachiisa maSPD pa gonhiyekabhineti ye inverter. Mativi e 1 m aishanda se antennas uye strike yakaramba ichipinda mu DC bus. Ndakazopedzisira ndagadzirisa waya panzvimbo iyi nemari yangu—uye ndakanyora mitemo iyi kudzivirira kudzokorora.
Chengeta malead ari pasi pe 0.5 m, twist line uye earth pairs, woisa maSPD paplate yesimbi imwechete neinverter.Izvi zvinochengetedza voltage inoyerera pasi pe600 V—yakachengeteka kune 1 200 V semiconductors.
Nzvimbo, nzvimbo, nzvimbo
Ndinoisa maDC SPD mukati mebhokisi rekubatanidza, kwete pa inverter. Izvi zvinoderedza urefu hwe lead kusvika 25 cm. Kudivi re AC, ndinoisa SPD mu load-break panel mushure me main breaker - ndichidzivirira inverter ne revenue meter.
Geometry yevhu inoshanda chaizvo
Sungai SPD earth terminal kune imwe chete copper bar ne inverter chassis. Shandisa waya ye 16 mm² yakakoshwa kusvika 20 Nm, wobva waisa 50 mm² bare copper yakananga kune earth rod. Kudzivirira kubva kuSPD kuenda kune earth kunofanira kuva
Ndinotora mifananidzo yekuverenga kwe micro-ohmmeter—inobvisa gakava nemainjiniya anosarudza.
Kuvhara mamiriro ekunze uye kudzivirira UV
MuIndia pa45°C, IP20 SPD yakatsvuka uye yakatsemuka mumwedzi mitanhatu. Iye zvino ndatsanangura mavharo eIP66 uye magland anogadzikana neUV. Mari yekuwedzera ye$3 payuniti imwe neimwe yakachipa pane helikopta kunzvimbo yerenje.
| Basa | Chishandiso chandinoshandisa | Nguva patambo imwe neimwe |
| Tambo yekubvisa | Chinobvisa otomatiki | masekondi makumi matatu |
| Chikwama chakakombama | Hydraulic 6 t | masekondi makumi mana nemashanu |
| Torque M8 stud | Chipanera chetorque che20 Nm | masekondi gumi nemashanu |
| Kuedzwa kwedenderedzwa repasi | Fluke 1625 | 2 maminiti |
| Kuongororwa kweSCADA kwemvura yakaoma | Laptop | 1 miniti |
Nguva yese yekuisa iri pasi pemaminitsi matanhatu patambo imwe neimwe, saka basa rinoramba riri pasi pemadhora mana. Izvi zvinoita kuti muripo wangu weEPC urambe wakasimba uye PM wangu afare.
Mhando dzeSPD dzinokurudzirwa uye Kuongororwa kwePV Systems
Ndinoisa pepa diki rekubiridzira mukati mekadhi rangu. Zvinonditadzisa kufunga zvakanyanya kana mumiririri wekutengesa achindipa bhurocha rinopenya.
Kune tambo dzePV ≤ 1 500 V, ndinotsanangura Type 1+2, 1 200 V Uc, 50 kA Iimp, IP66, ine thermal disconnect.
Pa 480 V AC, ndinoshandisa 600 V Uc ine 100 kA Imax nekuti utility feed yakaoma.
Rondedzero yangu pfupi yemamodeli akashandiswa mumunda
| Kodhi yemuenzaniso | Voltage | Iimp 10/350 | Imax 8/20 | Chiratidzo chiri kure | Mutengo weFOB Wenzhou |
| LKX-PV50 | 1200V | 50 kA | 100 kA | Ehe | $18.90 |
| LKX-PV100 | 1200V | 100 kA | 200 kA | Ehe | $29.50 |
| LKX-AC100 | 600V | 100 kA | 160 kA | Ehe | $22.00 |
Ini ndine 50 kA version ye90% yemabasa. Kana nzvimbo iyi iri kumahombekombe eFlorida, ndinosvetukira ku100 kA. Nguva yekuburitsa zvinhu kubva kufekitori yangu mazuva gumi nemaviri, uye chivakwa chimwe nechimwe chinotumirwa nemushumo wekuongororwa uye chitupa cheUL 1449 CB. Mapepa aya anobvumidza kubhadhariswa kwemitero muHamburg, Los Angeles, neMumbai pasina mimwe mibvunzo.
Nhamba dzezvikamu zvakagadzirwa zvemaOEM makuru
Apo German EPC yaida modhi ye1 500 V ine MC4 pre-wared leads, takaigadzira mumazuva manomwe. Takawedzera nhamba yeserial ine barcode kuitira kuti vagone kuskena yuniti yega yega muSAP. MOQ yaive zvidimbu mazana maviri chete, uye mutengo weprimiyamu waive $1.20. Vakachengetedza $8 000 pabasa remumunda, saka basa recustom rakazvibhadhara pakutumira kwekutanga.
Kwekutenga SPDs Dzakavimbika dzekudzivirira PV yezuva
Ndakambotenga kubva kumutengesi weShenzhen uyo akavimbisa kuti “UL mangwana.” Chitupa hachina kuuya, uye kontena rangu rakagara muOakland kwemavhiki mashanu. Iye zvino ndiri kutsvaga zvinhu zvakananga kubva kufekitori—uye hupenyu hwava nyore.
Ndinotenga mishonga yeSPD zvakananga kubva kufekitori yeLeikexing muWenzhou.Vane faira reUL, vanoita bvunzo dzekukwegura 100%, uye vanopa EXW kana DDP shipping. Ini ndinowana waranti yemwedzi makumi maviri nemana uye 2% spare kit pakutenga kwega kwega.
Sei ndisingade Alibaba nekuda kwekutenga zvinhu zvakawanda
Alibaba yakakodzera masampuli—kwete maodha emadhora zviuru makumi masere ($80,000). Ndinobhururuka kuenda kuWenzhou, ndoongorora fekitari ine 2,000 m², ndosangana neQC, ndosaina chibvumirano chefuremu. Rwendo irworwo rwemadhora mazana mapfumbamwe runovimbisa kuwanikwa kwakavimbika uye mutengo wakatarwa kwemwedzi gumi nemisere.
Mitemo yekubhadhara inodzivirira mativi ese
Ndinoshanda ne30% down uye 70% pa bill of lading. Mushure meodha yangu yechipiri, vakabvumidza mitemo. Kana paine chikwereti, vanovhura kusvika ku$1M kana huwandu hwegore hwapfuura $200k—pahafu yemubereko webhangi rangu.
Sarudzo dzekutakura zvinhu dzandinoshandisa
| Maitiro | Nguva yekufambisa | Mutengo payuniti imwe neimwe (10 k pcs) | Nhanho yenjodzi |
| Gungwa LCL | mazuva makumi maviri nemasere | $0.38 | Zvakaderera |
| Gungwa FCL | Mazuva makumi maviri nemana | $0.18 | Zvakaderera |
| Mhepo DDP | Mazuva manomwe | $1.40 | Pakati nepakati |
| Njanji kuenda kuDE | mazuva gumi nemasere | $0.55 | Zvakaderera |
Kune mabasa ekuTexas, ndinobhuka FCL kuenda kuHouston. Kune vatengi vekuGermany, ndinosarudza njanji kuenda kuDuisburg uye ndinobhadhara mari yemitero yeEU mumaawa mashoma. Chero nzira, timu yekutakura zvinhu inonditumira GPS tracking uye kupinda mucustoms kontena isati yasvika. Ndinotumira data iroro kumutengi wangu, uye ndinotaridzika segamba ndisingabate pallet.
Mhedziso
Usamirira kuti dutu rinotevera ritange kusarudza bhajeti yako yekugadzirisa.
Tauriranai Leikexingyemitengo yeOEM, sampuro dzeV 1500, kana mutengo wakazara wePV SPD.
Email imwe chete inogona kuchengetedza webhusaiti yako $20,000 pachiitiko chayo chinotevera chemheni—ngatirambei tichiwana simba remagetsi ezuva, kwete kupisa.
Mibvunzo Inowanzo bvunzwa
1. Chii chinonzi PV Surge Protective Device?
Chishandiso Chinodzivirira chePV Surge chinodzivirira masolar systems kubva kumagetsi anodarika mwero anokonzerwa nemheni kana zviitiko zvekuchinja-chinja.
2. Sei kudzivirira kukwira kwemvura kubva muzuva kuchikosha kune masisitimu ePV?
Dziviriro yemagetsi ezuva inodzivirira kutadza kushanda kwe inverter, kukuvara kwetambo dze DC, uye kurasikirwa nemagetsi, zvichiita kuti sisitimu igare yakavimbika kwenguva refu.
3. Ndinoda here zvese zviri zviviri DC neAC Surge Protective Devices zvezuva?
Ehe. A Chishandiso cheDC Surge chinodzivirira zuva inodzivirira divi rePV array, nepo Chishandiso chekudzivirira cheAC Surge chezuva inodzivirira kubuda kwe inverter uye kubatana kwegrid.
4. Ndinofanira kushandisa rini mudziyo unodzivirira weType 1+2 Surge?
A Rudzi 1+2 SPD inokurudzirwa kana masisitimu ePV akasvikwa nemheni yakananga kana iri pedyo, zvichipa dziviriro yakabatana mumudziyo mumwe chete.
5. Sei IEC 61643 ichikosha pakudzivirira mheni dzePV?
Iyo IEC 61643 Chishandiso Chinodzivirira Kukwira chiyero chinoona kuti SPD inosangana nezvinodiwa zvekuchengetedza pasi rose uye mashandiro ekuisa maPV.