Ama-solar DC circuit breakers: ukuqinisekisa ukuphepha nokusebenza kahle
Ama-DC circuit breaker adlala indima ebalulekile ekuphepheni nasekusebenzeni kahle kwezinhlelo zamandla elanga. Njengoba isidingo semithombo yamandla avuselelekayo siqhubeka nokukhula, ukubaluleka kwamadivayisi okuvikela isekethe athembekile futhi asebenza kahle kakhulu akunakuphikiswa. Ezweni lelanga, ama-DC circuit breaker ayizingxenye ezibalulekile ezisiza ukuqinisekisa ukusebenza kahle kwezinhlelo ze-photovoltaic (PV) ngenkathi zivikela ezingozini zikagesi ezingaba khona.
Izinhlelo zamandla elanga zithembele kumaphaneli elanga ukuguqula ukukhanya kwelanga kube ugesi. Amaphaneli akhiqiza amandla kagesi aqondile (DC), afakwa ku-inverter bese eguqulwa abe amandla ashintshanayo (AC) ukuze asetshenziswe emakhaya, amabhizinisi kanye negridi. Kuyo yonke le nqubo, ama-DC circuit breaker asebenza njengendlela ebalulekile yokuphepha, evikela uhlelo kuma-overcurrent, ama-short circuit, kanye namanye amaphutha kagesi angabangela umonakalo noma abe yingozi kubasebenzi.
Omunye wemisebenzi eyinhloko yama-DC circuit breaker ekusetshenzisweni kwelanga ukuphazamisa ukuhamba kukagesi uma kwenzeka iphutha noma izimo zokusebenza ezingavamile. Ngokwenza kanjalo, asiza ekuvimbeleni umonakalo kumaphaneli elanga, izintambo, nezinye izingxenye zesistimu futhi anciphise ingozi yomlilo noma ukushaqeka kukagesi. Ngaphezu kwalokho, ama-DC breaker avumela abasebenzi bokulungisa ukuthi bahlukanise izingxenye ezithile ze-solar array ukuze zilungiswe noma zilungiswe ngaphandle kokuvala lonke uhlelo.
Kunezici eziningana ezibalulekile okufanele zicatshangelwe lapho ukhetha i-DC circuit breaker yokufakwa kwelanga. Lokhu kufaka phakathi izilinganiso ze-voltage kanye nezamanje zamaphaneli elanga kanye ne-inverter, uhlobo lokucushwa kwe-PV array (njengochungechunge noma okufana), kanye nezidingo ezithile zesicelo. Kubalulekile ukukhetha i-circuit breaker ehambisana nezici ezihlukile zesistimu yokukhiqizwa kwamandla elanga futhi enganikeza isivikelo esithembekile ngaphansi kwezimo ezahlukene zemvelo.
Eminyakeni yamuva nje, intuthuko kwezobuchwepheshe be-DC circuit breaker iholele ekuthuthukisweni kwemishini ekhethekile nephumelelayo eyenzelwe ngqo ukusetshenziswa kwelanga. Isibonelo, amanye ama-circuit breaker aklanyelwe ukwamukela amazinga aphezulu kagesi kanye namanje avame ukuhlotshaniswa nama-solar array, kanti amanye anikeza izici zokuvikela ezithuthukisiwe njengokutholwa kwamaphutha e-arc kanye namakhono okuvala ngokushesha. Lokhu kusungula izinto ezintsha akugcini nje ngokuthuthukisa ukuphepha nokuthembeka kwezinhlelo zamandla elanga, kodwa futhi kusiza ekuthuthukiseni ukusebenza okuphelele kanye nokuphila kwenkonzo kwemishini.
Ngaphezu kwalokho, ukuhlanganiswa kwezici zobuhlakani nokuxhumana kuma-DC circuit breaker anamuhla kungathuthukisa ukuqapha nokulawula ukufakwa kwelanga. Ngokusebenzisa izinqubo zokuxhumana zedijithali kanye namakhono okuphatha kude, abaqhubi bangathola ukubonakala kwesikhathi sangempela esimweni se-circuit breaker, bathole izinkinga ezingaba khona, futhi bathathe izinyathelo zokuthuthukisa ukusebenza kohlelo. Leli zinga lokubonakala nokulawula libalulekile ekuqinisekiseni ukusebenza kahle kwezitshalo zamandla elanga kanye nokunciphisa isikhathi sokungasebenzi ngenxa yokwehluleka kukagesi.
Njengoba ukuguqukela emhlabeni wonke kumandla azinzile kuqhubeka, kulindeleke ukuthi isidingo sama-DC circuit breaker asezingeni eliphezulu okusetshenziswa kwelanga sikhule. Abakhiqizi nabaphakeli balwela njalo ukuhlangabezana nalesi sidingo ngokunikeza imikhiqizo eyahlukahlukene ehlangabezana nezidingo zokuphepha nokusebenza okuqinile kwemboni yelanga. Kungakhathaliseki ukuthi ukufakwa kwelanga kwezindawo zokuhlala, ezentengiselwano noma ezisetshenziswa kakhulu, indima yama-DC circuit breaker ekuvikeleni ubuqotho bengqalasizinda kagesi ayinakunakwa.
Ngamafuphi, ama-DC circuit breaker ayisici esibalulekile ezinhlelweni zokukhiqizwa kwamandla elanga, ahlinzeka ngokuvikelwa okudingekayo emaphutheni kagesi futhi aqinisekise ukusebenza okuphephile nokuthembekile kwemishini ye-photovoltaic. Njengoba ubuchwepheshe buqhubeka nokuthuthuka futhi ukugxila emandleni avuselelekayo kukhula, ukuthuthukiswa kwezixazululo zokuvikela isekethe ezikhethekile ezenzelwe ukusetshenziswa kwelanga kuzoqhubeka nokudlala indima ebalulekile ekwakheni ikusasa lokukhiqizwa kwamandla okusimeme. Ngokubeka phambili ukukhethwa nokusetshenziswa kwama-DC circuit breaker asezingeni eliphezulu, abathintekayo embonini yelanga bangagcina amazinga aphezulu okuphepha nokusebenza kahle ngenkathi befaka isandla ekuthuthukisweni kwezinhlelo zamandla ahlanzekile.
Isikhathi sokuthunyelwe: Julayi-10-2024