UCanwin yiNkampani yeNkampani yoTshintsho lwaMandla kunye noMvelisi woMbane woMbane
Ulwimi
UCanwin yiNkampani yeNkampani yoTshintsho lwaMandla kunye noMvelisi woMbane woMbane
Umbuzo:
"Kukho i-transformer yakudala ye-1000KVA enomthwalo okhoyo malunga ne-200KW. Ukuba umthwalo omtsha malunga ne-600KW kufuneka wongezwe, ngaba le transformer ingamelana nayo?"
Lo mbuzo kuqala ubandakanya ingqikelelo, oko kukuthi, ubudlelwane kunye nomahluko phakathi kwe-KVA kunye ne-KW.
I-KVA (kilovolt-ampere) yiyunithi yamandla abonakalayo, kunye ne-KW (kilowatt) yiyunithi yamandla asebenzayo. Ukongeza kumandla abonakalayo kunye namandla asebenzayo, kukho amandla asebenzayo, kwaye iyunithi yamandla asebenzayo yiKvar (kilovar).
Uthini umahluko phakathi kwamandla asebenzayo, amandla asebenzayo, kunye namandla abonakalayo?
Amandla asebenzayo ngamandla asetyenziswa ngokwenene zizixhobo zombane, oko kukuthi, amandla ombane aguqulwa abe zezinye iindlela zamandla.
Ngokomzekelo, amatyala ombane emihla ngemihla ahlawulwa ngumntu wonke ngumbane osebenzayo;
Amandla asebenzayo athetha ukuba ezinye izixhobo aziwusebenzisi ngokwenene umbane, yinxalenye yamandla egcina umbane okwexeshana.
Ngokomzekelo, ukuba kukho i-capacitor / i-coil kwisixhobo sombane, xa isixhobo sisebenza, i-capacitor / coil iya kuhlala ikwimeko yokuhlawula kunye nokukhupha. Ngenxa yokuba i-capacitor / coil ihlawuliswe kwaye ikhutshwe, ayisebenzisi ngokwenene umbane, ngoko le nxalenye yamandla ibizwa ngokuba yi-reactive power.
Amandla abonakalayo abhekisa kumandla ewonke anikezelwe ngumbane.
Ukongeza ekunikezeni amandla asebenzayo kwizixhobo zombane, unikezelo lwamandla (ngokubanzi lubhekisa kwi-transformer okanye ijenereyitha) ikwafuna ukunika amandla asebenzayo. Isizathu silula kakhulu. Nangona i-capacitor kwisixhobo sombane ayisebenzisi amandla, ihlala ihlawulisa kwaye ikhupha, ngoko ke kufuneka ithathe indawo yokunikezelwa kwamandla.
Emva kokucacisa ezi, makhe sijonge ubudlelwane phakathi kwabo, nto leyo eya kuthetha ngenye ingcamango - amandla factor. Ubungakanani bamandla asebenzayo anokubonelela ngombane kuxhomekeke kwinto yamandla.
【Amandla factor】
Umba wamandla ubhekisa kumlinganiselo wamandla asebenzayo kumandla abonakalayo, abonakaliswa ngokubanzi njenge cosφ.
Ngokomzekelo, i-transformer ye-1000KVA inokukhupha i-600KW yamandla asebenzayo xa i-power factor cosφ=0.6; kodwa xa umba wamandla u-cosφ=0.9, unokukhupha i-900KW yamandla asebenzayo.
Ukuba i-1 kWh yombane yi-yuan eyi-1, xa umbane wamandla u-0.6, i-transformer inokuvelisa inzuzo yezoqoqosho ye-yuan ye-600 / iyure; xa amandla ombane afikelela kwi-0.9, i-transformer inokuvelisa i-900 yuan / iyure yeenzuzo zezoqoqosho. Ngapha koko, indima yokubonelela amandla yinto engaphezulu kakhulu kunoko kulula, zininzi kakhulu, ngoko ke andizukuthetha ngayo apha.
【Uhlahlelo lwesi sihloko】
Ngesiseko esingentla, kulula ukucacisa esi sihloko.
Iyunithi yomthamo we-transformer yi-KVA (kilovolt-ampere), kunye neyunithi yamandla yesixhobo sombane yi-KW (kilowatt). Kuphela xa i-factor yamandla iku-1, apho amandla okukhutshwa kwe-1000KW angalayishwa ngokupheleleyo, kodwa ngokusisiseko akunakwenzeka kwizicelo ezibonakalayo.
Xa uyila, kuyimfuneko ukushiya umda othile, obala ngokubanzi ngokwezinga lokuthotyelwa kwe-90%, eyona nto inoqoqosho kunye nengqiqo, oko kukuthi, 1000 × 0.9 = 900KVA. Ukuba sihlawula amandla ombane kwi-0.95 nangaphezulu ngokusebenzisa imbuyekezo yamandla, ngoko i-transformer inokuvelisa i-900 × 0.95 = 855KW amandla asebenzayo.
Qaphela: Inkampani yamandla ifuna ukuba amandla ombane abe ngaphezulu kwe-0.9, kungenjalo kuya kubakho izohlwayo; kodwa amandla ombane akakwazi ukudlula i-1, ngaphandle koko i-voltage yenkqubo iya kwanda kwaye ichaphazele ukusebenza okuqhelekileyo kwenkqubo.
Isihloko sithi i-1000KVA isiguquli sokuqala sanikezela amandla kwisixhobo sombane se-200KW, kwaye ngoku izixhobo zombane ezingama-600KW zongeziwe. Amandla asebenzayo ewonke ezixhobo zombane afikelele kwi-800KW, engekadluli kwixabiso elibaliweyo.
Ke ngoko, isiguquli se-1000KVA saqala sanikezela amandla kwisixhobo sombane se-200KW, kwaye ngoku izixhobo zombane ze-600KW zongezwa. Ngethuba nje sinokunyusa amandla ombane kwixabiso elifunekayo, i-transformer inokusebenza ngokukhuselekileyo ixesha elide.
