2023-11-13
Menene aikin masu kare hawan hasken rana na DC?Ina tsammanin yawancin masu zanen lantarki sun fito fili.Walƙiya a matsayin babban bala'i na halitta, faruwar walƙiya-wanda ke haifar da wuce gona da iri na wucin gadi yana da sauƙin yin lahani ga kayan aikin lantarki na ginin, musamman na'urorin lantarki, wanda ke haifar da asarar tattalin arziƙi kai tsaye da kai tsaye ga kamfani.Saboda haka, kariyar walƙiya da kariya ta aminci a cikin fasahar kariya ta haɓaka ya zama wuri mai zafi na yanzu.Don haka, ya kamata masu kare hawan DC su zama yadda za a zaɓa?
Tare da haɓakar fasaha, samfuran lantarki suna ƙara ƙaruwa, kuma aikace-aikacen su suna ƙara yaduwa.Koyaya, ƙimar juriyar ƙarfin lantarki na waɗannan samfuran lantarki gabaɗaya ya fi na na'urorin rarraba ƙarancin wutan lantarki, don haka suna da rauni ga jujjuyawar wutar lantarki, watau lalacewa daga ƙarfin ƙarfin lantarki.Abin da ake kira surge, wanda kuma aka sani da overvoltage na wucin gadi, shine canjin wutar lantarki na wucin gadi wanda ke faruwa a cikin da'ira kuma yawanci yana iya ɗaukar kusan kashi ɗaya cikin ɗaki ɗaya na daƙiƙa a cikin da'ira, kamar a yanayin walƙiya, bugun walƙiya na iya ci gaba da samar da wutar lantarki. sauye-sauye a cikin kewaye.
Tsarin kewayawa na 220V zai haifar da saurin jujjuyawar wutar lantarki mai dorewa na iya kaiwa 5000 ko 10000V, wanda kuma aka sani da karuwa ko wuce gona da iri.Ƙarin wuraren walƙiya a cikin kasar Sin, da walƙiya a matsayin muhimmiyar mahimmanci wajen samar da wutar lantarki a cikin layi, don haka ya zama dole a karfafa kariyar walƙiya a cikin tsarin rarraba ƙananan wutar lantarki.
SPD mai karewawaccan kariyar overvoltage, ka'idar aiki ita ce lokacin da layin wutar lantarki, layin watsa sigina na wuce gona da iri, mai karewa zai zama magudanar ruwa mai yawa don iyakance wutar lantarki a cikin kewayon wutar lantarki wanda kayan aikin zasu iya jurewa, ta haka ne ke kare kayan aiki daga girgizar wutar lantarki.
Mai karewa a cikin yanayi na al'ada, a cikin yanayin juriya mai girma, babu yabo na halin yanzu;lokacin da aka sami karfin juyi a cikin da'irar, mai kariyar hawan za a haifar da shi a cikin ɗan gajeren lokaci, ƙarancin wutar lantarki mai yawa, don kare kayan aiki;overvoltage yana ɓacewa, mai karewa don maido da babban juriya, ba zai shafi samar da wutar lantarki na yau da kullun ba.
A halin yanzu, zayyana na dc solar surge kariya har yanzu akwai nakasu da yawa a cikin ainihin ginin ya haifar da matsaloli masu yawa, har ma ya haifar da jinkirin aikin, kamar haka:
1) Bayanin zane yana da sauƙi, ma'anar ba a bayyana a fili ba, kuma buƙatun shigarwa ba su da takamaiman isa, wanda zai iya haifar da rashin tabbas mai yawa a lokacin ginawa kuma zai iya haifar da lalacewa ko asarar tattalin arziki ga kayan lantarki don zama. kariya.
2) Zane-zane na mai kariyar tashin hankali na DC ba shi da isasshen ƙarfi, kuma wani lokacin ma kai tsaye ana amfani da shi ga ƙayyadaddun ƙirar kariyar walƙiya, ba bisa tsarin tsarin ƙasa na tsarin rarraba don ƙira da aka yi niyya ba, na iya haifar da mai karewa a cikin takamaiman wayoyi. kurakurai na shigarwa.
3) a cikin zane-zane na tsarin rarraba, ma'auni na ƙirar ƙira mai haɓaka ba su cika ba, kamar matakin kariyar ƙarfin lantarki UP, ko fashe-hujja, matsakaicin ƙarfin wutar lantarki Uc da sauran mahimman sigogi ba a tsara su ba, ko wasu sigogin ba daidai ba ne. , yana haifar da ainihin aiki na gazawar kariyar karuwa ko lalata kayan lantarki.
4) Ba a cika ƙayyadaddun ƙira ba.Gabaɗaya, don samun cikakken kwatancin ƙirar ƙirar ƙira don littafin ƙira, kamar ƙayyadaddun aikin gini, tushen ƙirar ƙira, ko haɗa da tsarin bayanan lantarki, matakin ƙirar ƙirar na'ura mai karewa.
1) Bayanin ƙirar ƙirar SPD masu haɓaka haɓakawa: bayyani na aikin, ƙirar kariyar walƙiya, tushen ƙira, tsarin bayanan lantarki, matakin kariyar walƙiya, tsarin ƙasa, hanyar da kebul ɗin ya shiga gida, buƙatun juriya na ƙasa, da sauransu.
2) Lissafin wurin shigarwar mai karewa, lambar akwatin lantarki, matakin kariya, lamba, sigogi na asali (masu fitarwa na yanzu A cikin ko inrush na yanzu, matsakaicin ƙarfin ƙarfin aiki Uc, matakin kariyar ƙarfin lantarki sama), da sauransu. .
Ƙananan tsarin rarraba wutar lantarki na tsarin ƙasa yana da IT, TT, TN-S, TN-CS nau'i hudu, don haka SPD surge kare ya dogara ne akan tsarin tsarin ƙasa daban-daban na tsarin rarraba wutar lantarki daban-daban kuma zaɓi zane daban-daban na wayoyi, don misali, lokacin amfani da tsarin rarraba wutar lantarki na TN AC, layin rarraba da ke kaiwa daga jimlar akwatin rarraba a cikin ginin zai buƙaci amfani da tsarin ƙasa na TN-S.
Lokacin da ƙananan layukan wutar lantarki daga grid don kebul ɗin da ke ƙasan garkuwar sama ko kebul ɗin binne, ba za a iya shigar da mai kariyar hawan SPD ba.Kuma a lokacin da duk ko wani ɓangare na low-ƙarfin wutar lantarki Lines na sama Lines, da kuma yankin da tsawa kwana fiye da 25d / a, wannan lokaci don shigar da karuwa kariya don hana overvoltage tare da wutar lantarki saboda gabatarwar walƙiya impulses, sabõda haka,. Matsakaicin yawan wutar lantarki yana ƙasa da 2.5kV.
Gabaɗaya ana shigar da na'urar kariya ta Surge a cikin wutar lantarki a layin da ke shigowa, wurin da aka sanya shi zai iya zama na'urorin lantarki na ciki, amma kuma a cikin sashin watsa labarai na ƙasa an amince da a sanya shi a layin wuta mafi kusa daga ginin, cewa shi ne, shigar a kan saman layi a cikin na USB line.Idan na'urar lantarki a kan overvoltage yana da buƙatu mafi girma, ko overvoltage zai haifar da ƙarin sakamako mai tsanani, kamar ikon haifar da fashewa ko ma wuta, ko kayan aikin lantarki mai mahimmanci don tsayayya da ƙarfin ƙarfin ƙarfin yana da ƙananan ƙananan, amma kuma yana buƙatar ƙara yawan ƙarfin wutar lantarki. shigarwa na masu karewa masu karuwa.
A cikin ƙananan tsarin rarraba wutar lantarki don zaɓar na'urar kariyar hawan DC lokacin da manyan abubuwan da za a yi la'akari su ne kamar haka:
(1) Ƙayyade matakin kariyar ƙarfin lantarki Haɓaka mai kariyar hawan DC.Matsakaicin kariyar ƙarfin lantarki Up yana nufin matsakaicin ƙarfin lantarki a duka ƙarshen mai kariyar karuwa da aka auna lokacin fitarwa na yanzu yana aiki, gabaɗaya zuwa 2.5, 2, 1.8, 1.5, 1.2, 1.0 matakan shida, naúrar don kV.Don hana cutar da kayan aikin lantarki ta hanyar wuce gona da iri, da farko mun yi la'akari da cewa ƙarfin juriya na ƙarfin lantarki na kayan lantarki da aka kayyade yakamata ya zama mafi girma fiye da matakin kariyar wutar lantarki Up na mai karewa.
(2) na'urar kariyar karuwa ta amfani da cikakken yanayin kariya.Wato, zuwa L-PE, LN da layin LL an shigar dasu tsakanin mai kariyar hawan jini don kunna cikakkiyar kariya ta layin, wanda zai iya kare bugun walƙiya ba tare da la'akari da wane layin da ke tsakanin overvoltage ba, zai ba da damar kayan aikin lantarki su zama daidai. kariya.A lokaci guda kuma, ana iya buɗe cikakkiyar yanayin kariyar mai kariyar hawan jini a lokaci guda don guje wa farawar mai ba da kariya ga bambance-bambancen da ke haifar da lalacewar nasa, ta haka ne za a iya tsawaita rayuwar mai karewa.
(3) Zaɓi matsakaicin ƙarfin ƙarfin aiki mai ɗorewa Uc na mai karewa.Matsakaicin ƙarfin ƙarfin aiki mai ɗorewa yana nufin matsakaicin ƙarfin lantarki wanda za'a iya ci gaba da amfani da shi zuwa ga mai karewa mai ƙarfi ba tare da haifar da canje-canje a cikin halayen ma'ajin haɓaka ba da kuma gudanar da mai karewa.
(4) Zaɓi madaidaicin madaidaicin fitarwa na halin yanzu na mai karewa bisa ga halayen muhalli na wurin.Matsakaicin fitarwa na halin yanzu yana nufin cewa mai karewa zai iya wuce mafi girman halin yanzu na 8/20μs na yanzu sau biyu ba tare da lahani ga mai kare cutar ba.A haƙiƙa, mai kariyar hawan DC yana da matsakaicin fitarwa na halin yanzu.
SPD Surge kariyar duk da cewa kariya daga kayan lantarki daga overvoltage lalacewa ya taka rawar gani sosai, amma saboda da'irar da aka haifar da overvoltage iya wani lokacin wuce kewayon da karuwa mai kariyar, don haka a lokacin da karuwa da kariya aiki na dogon lokaci a cikin overvoltage jihar. Hakanan za'a lalata su zuwa nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'in iri) da nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'in nau'in kifi) da nau'ikan nau'ikan nau'ikan nau'ikan iri iri iri da magani da sabis da rayuwar sabis ɗin sabis ɗin sabis yana shafar waɗannan.Misali, lokacin da karfin juzu'i ya yi tsayi da yawa, mai karewa zai iya karyewa ya haifar da gajeriyar da'ira mai tsanani, kamar yadda aka nuna a cikin adadi.
Idan ba'a haɗa na'urar kariyar haɓaka ba a cikin jeri tare da na'urar kewayawa, mai karya layin D1 zai yi ta atomatik, kamar yadda har yanzu akwai lcc a halin yanzu, kawai bayan an maye gurbin mai karewa, layin gajeriyar kewayawa D1 zai sake rufewa, ta yadda tsarin ya rasa ci gaba da samar da wutar lantarki.Maganin wannan matsala shine haɗa na'urar kewayawa ta layi a jere tare da babban ƙarshen mai karewa , don zaɓar madaidaicin layin da aka ƙididdige halin yanzu daidai da matsakaicin fitarwa na mai kare hawan don na'urar ta yi aiki yadda ya kamata, kuma lanƙwan ƙwanƙwasa yana ɗaukar nau'in C, kuma ƙarfin karyewar sa dole ne ya fi matsakaicin gajeren kewayawa a lokacin shigarwa.Kamar yadda aka nuna a cikin tebur:
| IMAX(kA) | Nau'in Lanƙwasa | Yanzu (A) |
| 8-40 | C | 20 |
| 65 | C | 50 |
Na al'ada ƙaramar da'ira breaker halin yanzu bai fi 10kA, tebur za a iya gani da zabi na da'ira mai watsewa da wuya a hadu da karya iya aiki dole ne mafi girma fiye da matsakaicin short-kewaye halin yanzu a shigarwa.Sabili da haka, amfani da fuses don kare kariya mai haɗari shine zabi mai kyau!
Ƙarfin wutar lantarki ya yadu.Bisa kididdigar da aka yi, ana samun karuwar karfin wutan lantarki a kowane minti 8 a cikin grid na kasa, kuma kashi 20-30% na gazawar kwamfuta ana haifar da wutar lantarki ta karuwa, don haka ƙirar kariya ta haɓaka yana da matukar muhimmanci.Ƙirar kariya ta ƙyalli ita ce ƙira ta rigakafi, hanya ɗaya tilo don kare kayan aikin mu daga lalacewa da yawa kaɗan gwargwadon yiwuwa.Zane na na'urar kariya ta hasken rana ta DC yakamata yayi la'akari da abubuwa masu tasiri daban-daban.Ta wannan hanya ne kawai mai kare hawan zai iya taka madaidaicin rawar kariya kuma ya fi dacewa ya kare kayan lantarki daga lalacewa mai yawa.
Dongguan Slocable Photovoltaic Technology Co.,LTD.
Ƙara: Guangda Manufacturing Hongmei Science and Technology Park, No. 9-2, Hongmei Section, Wangsha Road, Hongmei Town, Dongguan, Guangdong, China
Saukewa: 0769-220101
