Uhlelo lokulondolozwa kwamandla kwebhethri, elaziwa kakhulu njenge-BESS, lusebenzisa ama-Banks amabhethri akhiwa kabusha ukuze agcine ugesi owengeziwe kusuka kugridi noma imithombo evuselelekayo ukuze isetshenziswe kamuva. Njengamandla avuselelekayo kanye nobuchwepheshe obuhle kakhulu begridi kusenesikhathi, izinhlelo ze-Bess zidlala indima ebaluleke kakhulu ekuqiniseni amandla okuqinisa futhi kwandise inani lamandla aluhlaza. Manje lezi zinhlelo zisebenza kanjani ngempela?
Isinyathelo 1: Ibhange lebhethri
Isisekelo sanoma iyiphi i-BESCE iyisitoreji samandla esiphakathi - amabhethri. Amamojula webhethri amaningi noma "amaseli" athambekele ndawonye ukwakha "ibhange lebhethri" elinikeza umthamo wokugcina odingekayo. Amangqamuzana asetshenziswa kakhulu yi-Lithium-ion ngenxa yobuningi bawo obuphezulu bamandla, isikhathi eside sokuphila isikhathi eside kanye nekhono lokushaja okusheshayo. Amanye amaKerstries afana namabhethri we-lead-acid kanye nokugeleza nawo asetshenziswa kwezinye izinhlelo.
Isinyathelo 2: Uhlelo Lokuguqulwa Kwamandla
Ibhasi lebhethri lixhumeka kugridi kagesi ngohlelo lokuguqulwa kwamandla noma ama-PC. Ama-PCs aqukethe izakhi ze-elekthronikhi zamandla njenge-inverter, iConverter, kanye nokuhlunga okuvumela amandla ukugeleza kuzo zombili izinkomba phakathi kwebhethri negridi. I-inverter iguqula i-Direct yamanje (i-DC) kusuka ebhethri ekuguquleni kwamanje (ac) ukuthi iGridi isebenzisa, futhi isiguquli senza ukubuyiselwa emuva ukukhokhisa ibhethri.
Isinyathelo 3: Uhlelo Lokuphathwa Kwebhethri
Uhlelo lokuphathwa kwebhethri, noma ama-BMS, ama-BMS futhi lulawula iseli ngalinye lebhethri ngaphakathi ebhange lebhethri. Izilinganiso ze-BMS amaseli, zilawula ama-voltage kanye namanje ngesikhathi sokukhokhisa nokukhipha, futhi zivikele ekulimaleni kusuka ekulahlekelweni ngokweqile, okungaphezulu kokungaphezulu noma ukudilizwa okujulile. Iqapha amapharamitha asemqoka anjenge-voltage, yamanje kanye lokushisa ukuze asebenzise kahle ukusebenza kwebhethri kanye nesikhathi sokuphila.
Isinyathelo 4: Uhlelo lokupholisa
Uhlelo olupholile lususa ukushisa ngokweqile kusuka kumabhethri ngesikhathi sokusebenza. Lokhu kubalulekile ukugcina amaseli ngaphakathi kobubanzi bawo bokushisa afanele futhi akhulise impilo yomjikelezo. Izinhlobo ezivame kakhulu zokupholisa ezisetshenzisiwe zokupholisa uketshezi (ngokujikeleza okupholile ngamapuleti ngokuxhumana namabhethri) nokupholisa komoya (kusetshenziswa abalandeli ukuphoqa umoya ngokufakwa kwebhethri).
Isinyathelo 5: Ukusebenza
Ngezikhathi zezidingo zikagesi eziphansi noma ukukhiqizwa kwamandla okuvuselelekayo okuphezulu, i-Bess ibamba amandla ngokweqile ngohlelo lokuguqulwa kwamandla futhi ligcina ebhange lebhethri. Lapho ukufunwa kuphakeme noma okuvuselelwa kungatholakali, amandla agcinwe akhishwa abuyele kugridi ngokusebenzisa inverter. Lokhu kuvumela i-Bess ukuthi "Isikhathi-Shift" Amandla Avuselelekayo, Hlanganisa imvamisa yegridi namandla kagesi, bese unikeza amandla okusekelayo ngesikhathi sokuphuma.
Uhlelo lokuphathwa kwebhethri luqapha isimo sokukhokhisa iseli ngalinye futhi lilawula izinga lokushaja nokulahla ukuvikela ngokweqile, ukugcwala ngokweqile kanye nokukhishwa okujulile kwamabhethri - ukwelula impilo yakhe esebenzayo. Futhi uhlelo olupholile lusebenza ukugcina izinga lokushisa lebhethri liphelele ngaphakathi kobubanzi bokusebenza okuphephile.
Ngokufundwa, uhlelo lokugcina amandla ebhethri lufaka amabhethri, izingxenye ze-Power Electronics, izilawuli ezihlakaniphile kanye nokuphathwa okushisayo ndawonye kwimfashini ehlanganisiwe ukuze kugcinwe ugesi ngokweqile kanye namandla okukhipha. Lokhu kuvumela ubuchwepheshe be-Bess ukuthi bandise inani lemithombo yamandla evuselelekayo, yenza ama-grids anamandla asebenze kahle futhi asimeme, futhi asekele ushintsho kwikusasa lamandla wekhabhoni eliphansi.
Ngokukhuphuka kwemithombo yamandla evuselelekayo efana namandla elanga namandla omoya, amasistimu wokugcina amandla webhethri amakhulu (ama-Bess) adlala indima ebaluleke kakhulu kumagridi e-Power. Uhlelo lokulondolozwa kwamandla ebhethri lusebenzisa amabhethri aqashelwa kabusha ukuze ugcine ugesi owengeziwe kusuka kugridi noma kusuka ekuvuseleleni futhi ulethe lawo mandla emuva lapho kudingeka. Ubuchwepheshe be-Bess busiza ukukhulisa ukusetshenziswa kwamandla avuselelekayo avuselelayo futhi kuthuthukise ukuthembeka kwegridi okuphelele, ukusebenza kahle kanye nokusimama.
I-BESS ngokuvamile iqukethe izakhi eziningi:
1) Amabhange ebhethri enziwe ngamamojula webhethri amaningi noma amaseli wokuhlinzeka umthamo wokugcina wamandla odingekayo. Amabhethri e-Lithium-Ion asetshenziswa kakhulu ngenxa yobukhulu bawo bamandla aphezulu, isikhathi eside sokuphila isikhathi eside kanye namakhono okushaja okusheshayo. Amanye amaKerstries afana namabhethri e-lead-acid kanye namabhethri ageleza nawo asetshenziswa.
2) Uhlelo lokuguqulwa kwamandla (ama-PC) axhumanisa ibhange lebhethri kugridi kagesi. Ama-PCs aqukethe i-inverter, iConverter kanye neminye imishini yokulawula evumela amandla ukugeleza kuzo zombili izinkomba phakathi kwebhethri negridi.
3) Uhlelo Lokuphathwa Kwebhethri (i-BMS) oluqapheli futhi lulawula isimo kanye nokwenza amaseli webhethri ngalinye. Izilinganiso ze-BMS amaseli, zivikela ukulimala kusuka ekulahlekelweni ngokweqile noma ekulahlekelweni okujulile, futhi kuqapha amapharamitha anjenge-voltage, yamanje kanye nokushisa.
4) Uhlelo lokupholisa olususa ukushisa ngokweqile kusuka kumabhethri. Kusetshenziselwa ukupholisa okususelwa emoyeni noma okususelwa emoyeni ukugcina amabhethri ngaphakathi kobubanzi bawo bokusebenza okusebenzayo futhi wandise isikhathi sokuphila.
5) Izindlu noma isitsha esivikela futhi sivikele lonke uhlelo lwebhethri. Ukufakwa kwebhethri kwangaphandle kumele kube yisimo sezulu futhi ukwazi ukubekezelela amazinga okushisa aphezulu.
Imisebenzi esemqoka ye-Bess kufanele:
• Khipha amandla ngokweqile kusuka kugridi ngezikhathi zokufunwa okuphansi futhi uyikhiphe lapho isidingo siphezulu. Lokhu kusiza ukuqinisa ukuguquguquka kwamandla okuguquguquka kwamandla.
• Gcina amandla avuselelekayo avela emithonjeni efana ne-solar PV namapulazi omoya anokuphuma okuguqukayo futhi okuphumayo okuphumayo, khona-ke ukuhambisa amandla agciniwe lapho ilanga lingashintshi. Lesi sikhathi-sishiya amandla avuselelekayo lapho kudingeka kakhulu.
• Nikeza amandla okusekelayo ngesikhathi samaphutha we-grid noma ukuphuma ukuze ugcine ingqalasizinda ebucayi isebenza, kungaba esiqhingini noma imodi eboshwe yigridi.
• Bamba iqhaza ekuphenduleni kwezidingo nezinhlelo zensizakalo ezihambisanayo ngokubeka amandla okuphuma kwamandla phezulu noma phansi ngokufunwa, ukuhlinzeka ngokusemthethweni okuthe xaxa kanye nezinye izinsizakalo zegridi.
Ekuphetheni, njengoba amandla avuselelekayo ayaqhubeka ukukhula njengamaphesenti ama-grids wamandla emhlabeni wonke, izinhlelo eziphakeme zebhethri zebhethri zizodlala indima ebaluleke kakhulu ekwenzeni lelo ndla elihlanzekile linokwethenjelwa futhi litholakale ubusuku nemini. Ubuchwepheshe be-Bess buzosiza ukukhulisa inani lokuvuselelwa, qinisa ama-grids wamandla futhi uxhase ukuguqulwa kwekusasa elizinzile, eliphansi lekhabhoni.
Isikhathi sePosi: Jul-07-2023
