2023-11-13
Kodi ntchito ya oteteza ma solar DC ndi chiyani?Ndikuganiza kuti opanga magetsi ambiri amamveka bwino.Mphezi ngati tsoka lalikulu lachilengedwe, kuchitika kwa mphezi chifukwa cha kupitilira kwanthawi yayitali kumakhala kosavuta kuwononga zida zamagetsi zanyumbayo, makamaka zida zamagetsi, zomwe zimapangitsa kuwonongeka kwachuma kwachindunji komanso kosalunjika ku bizinesiyo.Chifukwa chake, chitetezo cha mphezi ndi chitetezo chachitetezo muukadaulo woteteza ma surge chakhala malo otentha pano.Chifukwa chake, oteteza ma opaleshoni a DC ayenera kukhala momwe angasankhire?
Ndi chitukuko cha teknoloji, zinthu zamagetsi zikukula mosiyanasiyana, ndipo ntchito zawo zikufalikira kwambiri.Komabe, mphamvu yamagetsi yamagetsi yamagetsi yamagetsiyi nthawi zambiri imakhala yotsika kuposa yamagetsi otsika, motero amakhala pachiwopsezo cha kusinthasintha kwamagetsi, mwachitsanzo, kuwonongeka kochokera kumagetsi owonjezera.Zomwe zimatchedwa ma surge, zomwe zimadziwikanso kuti transient overvoltage, ndi kusinthasintha kwamagetsi kwakanthawi komwe kumachitika mozungulira ndipo kumatha kutha pafupifupi miliyoni imodzi ya sekondi imodzi, monga nyengo yamphezi, mphezi zimatha kupitiliza kupanga magetsi. kusinthasintha kwa dera.
Dongosolo la dera la 220V lipanga kusinthasintha kwakanthawi kokhazikika komwe kumatha kufika 5000 kapena 10000V, yomwe imadziwikanso kuti surge kapena kupitilira kwanthawi kochepa.More mphezi m'madera China, ndi mphezi monga chinthu chofunika kwambiri popanga mafunde voteji mu mzere, choncho m'pofunika kulimbikitsa chitetezo mphezi mu dongosolo otsika-voteji yogawa.
SPD chitetezo chitetezokuti overvoltage mtetezi, mfundo ntchito ndi kuti pamene chingwe mphamvu, chizindikiro kufala mzere chosakhalitsa overvoltage, opaleshoni mtetezi adzakhala overvoltage kuda kuchepetsa voteji mu osiyanasiyana voteji kuti zida angathe kupirira, potero kuteteza zida ku voteji mantha.
Chitetezo cha Surge muzochitika zabwinobwino, pakukana kwakukulu, palibe kutayikira kwapano;pamene pali overvoltage mu dera, ndi oteteza opareshoni adzayambitsa mu nthawi yochepa kwambiri, ndi overvoltage mphamvu kutayikira, kuteteza zida;overvoltage imasowa, chitetezo chowonjezera kuti chibwezeretse kukana kwakukulu, sichingakhudze mphamvu yamagetsi konse.
Pakadali pano, mapangidwe a DC solar surge protector akadali ndi zofooka zambiri pakumanga kwenikweni zidayambitsa mavuto ambiri, ndipo zidapangitsa kuti ntchitoyi ichedwe motere:
1) Kufotokozera kwa kapangidwe kake ndikosavuta, tanthauzo silinafotokozedwe momveka bwino, ndipo zofunikira zoyika sizili zachindunji, zomwe zingayambitse kusatsimikizika kwakukulu pakumanga ndipo zingayambitse kuwonongeka kapena kuwonongeka kwachuma pazida zamagetsi zomwe ziyenera kukhala. otetezedwa.
2) Mapangidwe a DC surge protector sasinthika mokwanira, ndipo nthawi zina amagwiritsidwa ntchito mwachindunji pazojambula zomangidwa ndi mphezi zokhazikika, osatengera njira yokhazikitsira kagayidwe kazachilengedwe, zitha kupangitsa kuti pakhale chitetezo chambiri pamawaya ena. zolakwika za unsembe.
3) pazithunzi zogawa, mawonekedwe oteteza chitetezo sali okwanira, monga gawo la chitetezo chamagetsi UP, ngakhale kuphulika, mphamvu yayikulu yogwiritsira ntchito Uc ndi magawo ena ofunikira sanapangidwe, kapena magawo ena sizolondola. , zomwe zimapangitsa kuti ntchito yeniyeni ya chitetezo cha opaleshoni iwonongeke kapena kuwonongeka kwa zipangizo zamagetsi.
4) Kufotokozera kwapangidwe sikunafotokozedwe.Ambiri, kukhala ndi kufotokoza mwatsatanetsatane kamangidwe ka opaleshoni mtetezi kwa buku kamangidwe, monga polojekiti yomanga mwachidule, maziko a kamangidwe, kaya kuphatikizika kwa kachitidwe pakompyuta zambiri, opaleshoni mtetezi chipangizo kapangidwe mlingo wa chitetezo.
1) Kufotokozera kwa kapangidwe ka chitetezo cha SPD: chiwonetsero cha polojekiti, gulu lachitetezo cha mphezi, maziko a mapangidwe, makina azidziwitso zamagetsi, chitetezo cha mphezi, njira yokhazikitsira pansi, momwe chingwe chimalowera mnyumba, zofunikira zokana, ndi zina zambiri.
2) Lembani malo osungiramo chitetezo cha opaleshoni, nambala ya bokosi lamagetsi, mlingo wa chitetezo, chiwerengero, magawo oyambirira (mwadzina wa discharge current In or inrush current limp, Uc Uc Uc, voltage Protection Level Up), ndi zina zotero. .
Low-voltage distribution system pulling ground system ili ndi IT, TT, TN-S, TN-CS mitundu inayi, kotero SPD surge wotetezera kuti akhazikike pa njira yoyambira yotsika yamagetsi otsika ndikusankha chithunzi chosiyana cha waya, Mwachitsanzo, pogwiritsira ntchito njira yogawa mphamvu ya TN AC, mizere yogawa yomwe imachokera ku bokosi lonse logawa m'nyumbayi idzafunika kugwiritsa ntchito TN-S pansi.
Pamene otsika-voteji mphamvu mizere ku gululi kwa pamwamba chishango pansi chingwe kapena kukwiriridwa chingwe, sangakhoze kuikidwa SPD opaleshoni mtetezi.Ndipo pamene onse kapena mbali ya mizere otsika-voteji mphamvu mizere pamwamba, ndi m'dera mvula yamkuntho masiku oposa 25d / a, nthawi iyi kukhazikitsa oteteza oteteza kuteteza overvoltage pamodzi mizere mphamvu chifukwa cha kukhazikitsidwa kwa zikhumbo mphezi, kotero kuti overvoltage mlingo ndi pansi 2.5kV.
Surge mtetezi chipangizo zambiri anaika mu magetsi pa mzere ukubwera, malo unsembe wake akhoza kukhala mkati zipangizo zamagetsi, komanso pa nkhani ya dipatimenti kufala dziko anavomera kuikidwa mu yapafupi mzere mphamvu kuchokera nyumbayo, kuti ndi, anaika mu mzere pamwamba mu chingwe chingwe.Ngati zida zamagetsi motsutsana ndi overvoltage ali ndi zofunika apamwamba, kapena overvoltage zidzabweretsa zotsatira zoopsa kwambiri, monga kutha kuyambitsa kuphulika kapena ngakhale moto, kapena zipangizo zamagetsi zofunika kupirira overvoltage mphamvu makamaka otsika, komanso ayenera kuonjezera kukhazikitsa kwa chitetezo champhamvu.
M'magawo otsika-voltage kuti musankhe chipangizo choteteza DC surge pamene zinthu zazikulu zomwe muyenera kuziganizira ndi izi:
(1) Dziwani kuchuluka kwa chitetezo chamagetsi Kumwamba kwa woteteza DC.Mulingo wachitetezo chamagetsi Mmwamba umatanthawuza kuchuluka kwamagetsi pamalekezero onse achitetezo chowotchera omwe amayezedwa pomwe kutulutsa kwadzina komwe kumachitika, komwe kumagawidwa kukhala 2.5, 2, 1.8, 1.5, 1.2, 1.0 magawo asanu ndi limodzi, gawo la kV.Pofuna kupewa kuti zida zamagetsi zisawonongeke chifukwa cha kuchulukirachulukira, choyamba timawona kuti mphamvu yolimbana ndi zida zamagetsi zotetezedwa iyenera kukhala yayikulu kuposa mulingo wachitetezo cha voltage Up of the surge protector.
(2) chida choteteza chitetezo chogwiritsa ntchito njira yonse yachitetezo.Ndiko kuti, ku L-PE, LN ndi LL mzere amaikidwa pakati pa otetezera opaleshoni kuti azisewera chitetezo chokwanira cha mzere, chomwe chingateteze kugunda kwa mphezi mosasamala kanthu kuti ndi mzere uti pakati pa overvoltage, zidzathandiza kuti zipangizo zamagetsi zikhale bwino. otetezedwa.Panthawi imodzimodziyo, kutsegulidwa kwa njira yonse yotetezera chitetezo cha opaleshoni ikhoza kutulutsidwa nthawi imodzi kuti ipewe kuyambika kwa chitetezo cha opaleshoni pa kusiyana komwe kumadza chifukwa cha kuwonongeka kwake, potero kumawonjezera moyo wa chitetezo cha opaleshoni.
(3) Sankhani voteji yokhazikika yokhazikika ya Uc yachitetezo cha opaleshoni.Mphamvu yamagetsi yokhazikika kwambiri imatanthawuza mphamvu yamagetsi yomwe imatha kugwiritsidwa ntchito mosalekeza kwa oteteza opareshoni popanda kupangitsa kusintha kwa mawonekedwe achitetezo cha opareshoni ndikuyendetsa woteteza opareshoni.
(4) Sankhani kuchuluka koyenera kotulutsa kwachitetezo chachitetezo molingana ndi momwe chilengedwe chimakhalira.Kutulutsa kwakukulu kwaposachedwa kumatanthawuza kuti woteteza opaleshoni amatha kungodutsa nsonga yaposachedwa ya mafunde apano a 8/20μs kawiri popanda kuwonongeka kwa woteteza opaleshoni.M'malo mwake, woteteza opangira ma DC ali ndi mphamvu zambiri zotulutsa.
SPD Surge mtetezi ngakhale chitetezo cha zida zamagetsi ku kuwonongeka overvoltage wakhala ndi gawo lalikulu kwambiri, koma chifukwa dera kwaiye overvoltage nthawi zina upambana osiyanasiyana mtetezi opaleshoni, kotero pamene opaleshoni mtetezi ntchito kwa nthawi yaitali mu boma overvoltage, zidzawonongekanso mosiyanasiyana, izi zimakhudzidwa kwambiri ndi moyo wautumiki wa oteteza opaleshoni.Mwachitsanzo, kupitirira kwapang'onopang'ono kukakhala kwakukulu kwambiri, chitetezo cha opaleshoni chikhoza kupyola ndikuyambitsa njira yayifupi, monga momwe chithunzichi chikusonyezera.
Ngati chipangizo choteteza chitetezo sichikulumikizidwa motsatizana ndi chowotcha dera, chowotcha mzere D1 chidzangoyenda, popeza lcc yolakwika ikadalipo, pokhapokha woteteza chitetezo atasinthidwa, mzere wachidule wa D1 udzatsekanso, kotero kuti dongosolo limataya kupitiriza kwa magetsi.Njira yothetsera vutoli ndikulumikiza chowotcha chozungulira pamzere ndi kumapeto chakumtunda kwa chitetezo chachitetezo, kusankha chowotcha chamzere chovotera pakali pano molingana ndi kuchuluka kwa kutulutsa kwaposachedwa kwachitetezo chachitetezo kuti wophwanya dera agwire bwino ntchito, ndi njira yokhotakhota itengera mtundu wa C, ndipo mphamvu yake yosweka iyenera kukhala yayikulu kuposa momwe zimakhalira nthawi yayitali pakukhazikitsa.Monga momwe tawonetsera patebulo:
| IMAX(kA) | Mtundu wa Curve | Panopa(A) |
| 8-40 | C | 20 |
| 65 | C | 50 |
Ochiritsira kakang'ono dera wosweka kuswa panopa si wamkulu kuposa 10kA, tebulo tingaone ndi kusankha kakang'ono dera wosweka n'kovuta kukumana kuswa mphamvu ayenera kukhala wamkulu kuposa pazipita yochepa dera panopa pa unsembe.Chifukwa chake, kugwiritsa ntchito ma fuse kuteteza chitetezo cha opaleshoni ndiye chisankho choyenera!
Kuthamanga kwamagetsi kuli ponseponse.Malinga ndi ziwerengero, kuchulukirachulukira kumapezeka mphindi 8 zilizonse mu gridi ya dziko, ndipo 20% -30% ya kulephera kwa makompyuta kumachitika chifukwa chamagetsi owonjezera, chifukwa chake mapangidwe achitetezo amafunikira kwambiri.Mapangidwe achitetezo cha Surge ndi mapangidwe oteteza, njira yokhayo yotetezera zida zathu kuti zisawonongeke mopitilira muyeso momwe tingathere.Mapangidwe a chipangizo choteteza ma solar DC akuyenera kuganizira mozama zinthu zosiyanasiyana zomwe zingakhudze.Ndi njira iyi yokha yomwe chitetezo cha opaleshoni chimatha kugwira ntchito yoteteza kwambiri komanso kuteteza bwino zipangizo zamagetsi kuti zisawonongeke.
Dongguan Slocable Photovoltaic Technology Co., LTD.
Onjezani: Guangda Manufacturing Hongmei Science and Technology Park, No. 9-2, Hongmei Section, Wangsha Road, Hongmei Town, Dongguan, Guangdong, China
TEL: 0769-22010201
