Yintoni “impazamo yokuba wedwa”?
Kwiinkqubo ze-photovoltaic kunye ne-transformer-less inverter, i-DC yodwa ukusuka kumhlaba. Iimodyuli ezineziphene zodwa kwimodyuli, iingcingo ezingakhuselekanga, i-optimizers yamandla enesiphene, okanye i-inverter yangaphakathi ephosakeleyo inokubangela ukuvuza kwangoku kwe-DC kumhlaba (PE - umhlaba okhuselayo). Isiphoso esinjalo sikwabizwa ngokuba yimpazamo yokuzahlula.
Ngalo lonke ixesha i-inverter ye-Renac ingena kwimodi yokusebenza kwaye iqala ukuvelisa amandla, ukuchasana phakathi komhlaba kunye ne-DC ephethe i-conductor yangoku ihlolwe. I-inverter ibonisa impazamo yodwa xa ibona ukuxhathisa okukodwa okudibeneyo okudibeneyo okungaphantsi kwe-600kΩ kwi-inverters yesigaba esisodwa, okanye i-1MΩ kwii-inverters zesigaba ezintathu.
Kwenzeka njani ukuba ube wedwa?
1. Kwimozulu efumileyo, inani leziganeko ezibandakanya iisistim ezineempazamo zokuzihlukanisa zonyuka. Ukulandela impazamo enjalo kunokwenzeka kuphela ngeli xesha lenzeke. Rhoqo kuya kubakho impazamo yokuzahlula kusasa ethi ngamanye amaxesha ithi shwaka ngokukhawuleza nje ukuba ukufuma kusonjululwe. Kwezinye iimeko, kunzima ukuqonda ukuba yintoni ebangela ukuba ube wedwa. Nangona kunjalo, inokuthi ibekwe phantsi kumsebenzi wofakelo olubi.
2. Ukuba i-shielding kwi-wiring yonakaliswe ngexesha lokufakwa, isiphaluka esifutshane singenzeka phakathi kwe-DC kunye ne-PE (AC). Yile nto siyibiza ngokuba lityala lokuzihlukanisa. Ngaphandle kwengxaki yokukhusela intambo, impazamo yokwahlulwa inokubangelwa kukufuma okanye uqhagamshelo olubi kwibhokisi yokuhlangana yephaneli yelanga.
Umyalezo wemposiso ovela kwi-inverter screen "yimpazamo yokuzahlula". Ngenxa yezizathu zokhuseleko, ngokude nje le mpazamo ikhona, i-inverter ayiyi kuguqula nawaphi na amandla njengoko kunokubakho ubomi obusongela ubomi kwiindawo eziqhubayo zenkqubo.
Ngethuba nje kukho uxhumano lombane phakathi kwe-DC kunye ne-PE, akukho ngozi ngokukhawuleza ekubeni inkqubo ayivaliwe kwaye akukho msinga unokuhamba kuyo. Nangona kunjalo, hlala ulumkile kuba kukho iingozi:
1. I-second short-circuit emhlabeni yenzeke i-PE (2) idala i-short-circuit current ngokusebenzisa iimodyuli kunye ne-wiring. Oku kuya kwandisa umngcipheko womlilo.
2. Ukuchukumisa iimodyuli kunokukhokelela ekulimaleni okukhulu ngokomzimba.
2. Ukuxilongwa
Ukulandelela impazamo yokuzahlula
1. Cima uqhagamshelo lwe-AC.
2. Ukulinganisa kwaye wenze inqaku le-voltage ye-open-circuit yazo zonke iintambo.
3. Nqamula i-PE (ihlabathi le-AC) kunye naluphi na umhlaba ovela kwi-inverter. Shiya i-DC iqhagamshelwe.
- Izibane ezibomvu ze-LED ukubonisa impazamo
- Umyalezo wesiphoso wedwa awusaboniswa kuba i-inverter ayinakuphinda ithathe ufundo phakathi kwe-DC kunye ne-AC.
4. Nqamula zonke iintambo ze-DC kodwa ugcine i-DC+ kunye ne-DC- kumtya ngamnye kunye.
5. Sebenzisa i-voltmeter ye-DC ukulinganisa i-voltage phakathi kwe- (AC) PE kunye ne-DC (+) naphakathi kwe- (AC) PE kunye ne-DC - kwaye wenze inqaku lazo zombini ii-voltages.
6. Uya kubona ukuba ukufundwa okukodwa okanye ngaphezulu akubonisi i-Volt 0 (Okokuqala, ukufundwa kubonisa i-voltage yesiphaluka evulekileyo, emva koko yehla ukuya ku-0); ezi ntambo zinempazamo yokwahlula. Amandla ombane alinganisiweyo anokunceda ukulandelela ingxaki.
Umzekelo:
Umtya oneephaneli zelanga ezisi-9 Uoc = 300 V
PE kunye +DC (V1) = 200V (= iimodyuli 1, 2, 3, 4, 5, 6,)
PE kunye –DC (V2) = 100V (= iimodyuli 7, 8, 9,)
Le mpazamo iya kubekwa phakathi kwemodyuli yesi-6 neyesi-7.
ISILUMKO!
Ukuchukumisa iinxalenye ezingafakwanga zentambo okanye isakhelo sinokubangela ukulimala kakhulu. Sebenzisa izixhobo ezifanelekileyo zokhuseleko kunye nezixhobo zokulinganisa ezikhuselekileyo
7. ukuba zonke iintambo ezilinganisiweyo zilungile, kwaye i-inverter isavela impazamo "impazamo yokuhlukanisa", ingxaki ye-hardware ye-inverter. Fowunela inkxaso yezobuchwephesha ukunikezela ngotshintsho.
3. Isiphelo
“Impazamo yokubekelwa bucala” idla ngokuba yingxaki kwicala lephaneli yelanga (ingxaki nje embalwa yokuguqula izinto), ikakhulu ngenxa yemozulu efumileyo, iingxaki zoqhagamshelo lwephaneli yelanga, amanzi akwibhokisi yokuhlangana, iiphaneli zesola okanye ukuguga kweentambo.