I-grid-tie, eyaziwa nangokuthi i-grid-tieama-invertersnoma utility-interactiveama-inverters, ibambe iqhaza elibalulekile ekusizeni ukuhlanganiswa kwamandla avuselelekayo kugridi ekhona.Ubuchwepheshe babo obusha buguqula kahle i-direct current (DC) ekhiqizwa izinhlelo zamandla avuselelekayo njengamaphaneli elanga noma izinjini zomoya zibe zamanje ezishintshanayo (AC) ezingabuyiselwa kugridi.
Umgomo oyisisekelo wokusebenza kwegridi eboshwei-inverterizungeza ukuvumelanisa kwamandla akhiqiziwe nemvamisa kanye ne-voltage yegridi.Lokhu kuvumelanisa kubalulekile ukuze kuqinisekiswe umjovo ongenazihibe wamandla avuselelekayo kugridi, ukuguqula ngokuphumelelayo amakhaya namabhizinisi abe izizinda zikagesi ezincane.Ake sibhekisise izigaba nezingxenye ezihilelekile kule nqubo yokusungula izinto ezintsha.
1. Ukuguqulwa kwe-DC ukuya ku-AC: Isigaba sokuqala sokuxhunywa kugridii-inverterukusebenza ukuguqula amandla e-DC akhiqizwa amandla avuselelekayo abe amandla e-AC.Lokhu kufinyelelwa ngamasekhethi e-elekthronikhi asebenzisa ukushintsha kwemvamisa ephezulu ukuguqula amandla futhi akhiqize amaza e-sine afana nefrikhwensi yegridi.
2. I-Maximum Power Point Tracking (MPPT): Kuzinhlelo ze-solar photovoltaic, ubuchwepheshe be-MPPT busetshenziselwa ukuthuthukisa ukuphuma kwamandla kwamaphaneli.I-algorithm ye-MPPT ilandelela indawo enkulu yamandla yamaphaneli elanga, iqinisekisa ukuthii-inverterisebenza ngempumelelo enkulu ngisho nangaphansi kwezimo ezihlukahlukene zokukhanya kwelanga.
3. Ukuvumelanisa namapharamitha wegridi: Uma amandla e-DC eseguqulelwe amandla e-AC, igridi ixhunyiwei-inverterivumelanisa imvamisa ne-voltage yamandla e-AC akhiqiziwe namapharamitha wegridi.Lokhu kufezwa ngokusebenzisa ama-algorithms okulawula athuthukile aqapha ngokuqhubekayo imvamisa kanye ne-voltage yegridi futhi alungise i-i-inverterokukhiphayo ngokufanele.
4. Isivikelo sokunqamula iziqhingi: Ixhumeke kwigridiama-invertersahlomeke ngendlela yokuvikela i-anti-islanding ukuvimbela ukujova kwamandla kugridi ngesikhathi samaphutha egridi noma imisebenzi yokulungisa.Lezi zinyathelo zihlukanisai-inverterkusuka kugridi, gwema izingozi ezingaba khona njengempendulo, futhi uqinisekise ukuphepha kwezisebenzi zensiza.
5. Ikhwalithi yamandla nokulawula amandla asebenzayo: Ixhumeke kwigridiama-invertersfuthi ingagcina ikhwalithi yamandla ngokulawula ngamandla amandla asebenzayo, i-voltage nama-harmonics.Angakwazi ukujova noma amunce amandla asebenzayo ukuze anxephezele ukushintshashintsha kwamandla kagesi futhi athuthukise ukuzinza nokuthembeka kwegridi.
6. I-grid feed-in: Uma igridi isiboshiwei-inverterivumelaniswa negridi futhi iqinisekisa ukuthobela zonke izidingo zobuchwepheshe, amandla aguquliwe e-AC abuyiselwa kugridi.La mandla angasetshenziswa abathengi abaseduze noma adluliselwe ezindaweni ezikude ngengqalasizinda ekhona yokudlulisa.
Umgomo wokusebenza wokubopha igridiama-invertersiguqula indlela izinhlelo zamandla avuselelekayo ezihlanganiswe ngayo kugridi.Ubuchwepheshe buvumela ukusetshenziswa kalula kwemithombo yelanga, umoya kanye neminye imithombo yamandla avuselelekayo ngokwesilinganiso, kunciphisa ukuncika kumafutha ezinto ezimbiwa phansi kanye nokunciphisa ukukhishwa kwesisi esibamba ukushisa.Ngaphezu kwalokho, i-grid-tieama-invertersukunikeza abanikazi bezindlu namabhizinisi ithuba lokuba abahlanganyeli abakhuthele ekushintsheni kwamandla, babe nesandla ekusaseni eliluhlaza nelizinzile.
Kafushane, i-grid-tieama-invertersziyisixhumanisi esibalulekile phakathi kwezinhlelo zamandla avuselelekayo kanye negridi.I-DC yayo ephumelelayo yokuguqulwa kwe-AC, ukuvumelanisa nemingcele yegridi kanye nokuvikelwa okulwa ne-islanding kuqinisekisa ukuhlanganiswa okuphephile nokuthembekile kwamandla avuselelekayo kwingqalasizinda ekhona.Njengoba kuxhunywe igridii-inverterubuchwepheshe buyaqhubeka nokuthuthuka, ukushintshela esimweni samandla esihlanzekile, esimeme kakhudlwana sekuba ngokoqobo.
Isikhathi sokuthumela: Oct-13-2023