I-transformer engu-1000KVA ingamelana nokusetshenziswa kwamandla okungakanani kwe-KW?

Lo mbuzo uqala ngokuhilela umqondo, okungukuthi, ubudlelwano nomehluko phakathi kwe-KVA ne-KW.

I-KVA (kilovolt-ampere) iyiyunithi yamandla abonakalayo, kanti i-KW (kilowatt) iyiyunithi yamandla asebenzayo. Ngaphezu kwamandla abonakalayo namandla asebenzayo, kukhona amandla asebenzayo, kanti iyunithi yamandla asebenzayo yi-Kvar (kilovar).

Uyini umehluko phakathi kwamandla asebenzayo, amandla okusabela, kanye namandla abonakalayo?

Amandla asebenzayo amandla asetshenziswa yizinto zikagesi, okungukuthi, amandla kagesi aguqulwa abe ezinye izinhlobo zamandla.

Isibonelo, izikweletu zikagesi zansuku zonke ezikhokhwa yiwo wonke umuntu ziwugesi osebenzayo;

Amandla asebenzayo asho ukuthi amanye amadivayisi awasebenzisi ugesi, yingxenye yamandla kuphela egcina ugesi okwesikhashana.

Isibonelo, uma kukhona i-capacitor/ikhoyili kudivayisi kagesi, lapho idivayisi isebenza, i-capacitor/ikhoyili izohlala isesimweni sokushaja nokukhipha. Ngenxa yokuthi i-capacitor/ikhoyili ishajiwe futhi ikhishwe, ayisebenzisi ugesi ngempela, ngakho-ke le ngxenye yamandla ibizwa ngokuthi amandla asebenzayo.

Amandla abonakalayo abhekisela kumandla aphelele anikezwa yi-power supply.

Ngaphezu kokunikeza amandla asebenzayo emishinini kagesi, ugesi (ngokuvamile ubhekisela ku-transformer noma ijeneretha) udinga futhi ukunikeza amandla asebenzayo. Isizathu silula kakhulu. Nakuba i-capacitor emishinini kagesi ingasebenzisi amandla, ihlala ishaja futhi ikhipha amandla, ngakho-ke idinga futhi ukuthatha ingxenye yamandla okunikezwa kwamandla kagesi.

Ngemva kokucacisa lokhu, ake sibheke ubudlelwano phakathi kwazo, okuzokhuluma ngomunye umqondo - isici samandla. Ukuthi ugesi unganikeza amandla angakanani asebenzayo kuncike kusici samandla.

【Isici samandla】

Isici samandla sibhekisela esilinganisweni samandla asebenzayo namandla abonakalayo, ngokuvamile achazwa njenge-cosφ.

Isibonelo, i-transformer engu-1000KVA ingakhipha amandla asebenzayo angu-600KW uma i-power factor cosφ=0.6; kodwa uma i-power factor cosφ=0.9, ingakhipha amandla asebenzayo angu-900KW.

Uma i-1 kWh kagesi ingu-1 yuan, lapho i-power factor ingu-0.6, i-transformer ingakhiqiza izinzuzo zomnotho ezingu-600 yuan/ihora; lapho i-power factor ifinyelela ku-0.9, i-transformer ingakhiqiza izinzuzo zomnotho ezingu-900 yuan/ihora. Eqinisweni, indima yokuhlinzeka nge-power factor ingaphezu kwalokho okulula, kunezinye eziningi, ngakho-ke ngeke ngikhulume ngakho lapha.

【Ukuhlaziywa kwalesi sihloko】

Ngesisekelo esingenhla, kulula ukuchaza lesi sihloko.

Iyunithi yamandla ye-transformer yi-KVA (kilovolt-ampere), kanti iyunithi yamandla yemishini kagesi yi-KW (kilowatt). Kuphela uma isici samandla singu-1, lapho amandla okukhipha angu-1000KW angalayishwa ngokugcwele, kodwa empeleni akunakwenzeka ezisetshenzisweni ezisebenzayo.

Uma uklama, kuyadingeka ukushiya umkhawulo othile, ovame ukubalwa ngokwezinga lokuthobela imithetho elingu-90%, okungabizi kakhulu futhi okunengqondo, okungukuthi, 1000×0.9=900KVA. Uma sibuyisela isici samandla ku-0.95 nangaphezulu ngesinxephezelo samandla, khona-ke i-transformer ingakhipha amandla asebenzayo angu-900×0.95=855KW.

Qaphela: Inkampani kagesi idinga ukuthi i-power factor ibe ngaphezu kuka-0.9, ngaphandle kwalokho kuzoba nezijeziso; kodwa i-power factor ayikwazi ukudlula u-1, ngaphandle kwalokho i-voltage yesistimu izokwanda futhi ithinte ukusebenza okuvamile kwesistimu.

Isihloko sithi i-transformer engu-1000KVA ekuqaleni yayihlinzeka ngamandla emishini kagesi engu-200KW, futhi manje sekunezelwe imishini kagesi engu-600KW. Amandla asebenzayo aphelele emishini kagesi afinyelele ku-800KW, okungadluli inani elibalwe.

Ngakho-ke, i-transformer engu-1000KVA ekuqaleni yayinikeza amandla imishini kagesi engu-200KW, futhi manje imishini kagesi engu-600KW yengeziwe. Uma nje singakhulisa isici samandla sibe yinani elidingekayo, i-transformer ingasebenza ngokuphephile isikhathi eside.