Aaladda hagaajinta danab ee taransfooriyaha waxa loo kala qaybiyaa qalab beddelka “off-excitation” korantada wax ka beddeleysa iyo beddelaha tabaha “kor-saar”
Labaduba waxay tixraacayaan habka habaynta danabka ee beddelka tabaha beddelka, haddaba waa maxay farqiga u dhexeeya labada?
① Beddelka tuubada "off-excitation" waa in la beddelo tuubada dhinaca-sare ee korontadu si ay u bedesho saamiga leexashada ee xeerbeegtida korantada marka labada dhinac ee aasaasiga ah iyo kuwa sare ee transformerku ay ka go'aan sahayda korontada.
② Beddelka tabaha "korka-saaran": Isticmaalka beddelka tuubada-load-ka, tuubada dabaysha beddelka waa la beddelaa si loo beddelo wareegga-sare ee xakamaynta korantada iyada oo aan la jarin hadda culeyska.
Farqiga u dhexeeya labadooda ayaa ah in beddelaha qasabadda ee off-excitation uusan lahayn awood uu ku beddelo qalabka wax lagu beddelo, sababtoo ah nooca beddelka tuubada waxa uu leeyahay habraac goyn muddo gaaban ah inta lagu jiro habka beddelka qalabka. Xidhiidhinta rarka hadda waxay keeni doontaa in ay isku dhacaan xiriirada waxayna dhaawacdaa tuubada beddeleysa. Beddelka tuubada rarka saarani waxa uu leeyahay iska caabin xad dhaaf ah inta lagu jiro habka beddelka qalabka, markaa ma jiro habsocod kala goyn ah oo muddo gaaban ah. Markaad ka beddelayso hal marsho oo aad u guurto mid kale, ma jiro hab-dabiici ah marka hadda culaysku go'o. Waxaa guud ahaan loo isticmaalaa transformers leh shuruudaha danab adag oo u baahan in si joogta ah loo hagaajiyo.
Mar haddii koronto-bixiyeha “load-loader” taabeeyaha tuubada uu garan karo shaqada nidaaminta korantada ee hoos timaada xaaladda hawlgalka beddelka, maxaad u dooranaysaa beddelaha tuubada “off-load”? Dabcan, sababta koowaad waa qiimaha. Duruufaha caadiga ah, qiimaha beddelka tuubada-load-ka-off-ka ah waa 2/3 qiimaha beddelka beddelka qasabadda; Isla markaana, mugga beddelka tuubada-load-ka-off-loader-ka aad ayuu u yar yahay sababtoo ah ma laha qaybta beddelka tuubada-load-ka. Sidaa darteed, haddii aysan jirin xeerar ama duruufo kale, beddelka beddelka tuubada off-excitation ayaa la dooran doonaa.
Waa maxay sababta loo dooranayo beddelka tuubada ku raran? Waa maxay shaqadu?
① Hagaajinta heerka u-qalmitaanka danab.
Gudbinta tamarta ee shabakada qaybinta nidaamka tamarta waxay dhalinaysaa khasaare, qiimaha luminta ayaa ah kan ugu yar oo kaliya ee u dhow tamarta la qiimeeyay. Ku dhaqanka korantada kor-u-qaadista, had iyo jeer ilaalinta tamarta hoose ee baska, iyo samaynta qalabka korantada ee ku shaqeeya heerka korantada ee la qiimeeyay waxay yaraynaysaa khasaaraha, taas oo ah tan ugu dhaqaale iyo macquulsan. Heerka u-qalmitaanka danabku waa mid ka mid ah tilmaamayaasha muhiimka ah ee tayada korontada. Nidaaminta korantada ee wakhtiga ku jirta waxay xaqiijin kartaa heerka u-qalmitaanka danab, si loo daboolo baahiyaha nolosha dadka iyo wax soo saarka warshadaha iyo beeraha.
② Hagaajinta awoodda magdhowga tamarta falcelinta oo kordhi heerka gelinta capacitor.
Sida qalab magdhow koronto falgal ah, soo-saarka tamarta falcelinta ee capacitors-ka korantadu waxay la mid tahay afargeeska tamarta shaqaynaysa. Marka korantada shaqaynaysa ee nidaamka korantadu hoos u dhacdo, saamaynta magdhawga ayaa hoos u dhacda, marka korantada shaqaynaysa kordho, qalabka korantada ayaa la kordhiyaa, taas oo keenta in korantada terminalku uu kordho, xitaa uu dhaafo heerka, taas oo sahlan in la dhaawaco dahaarka qalabka. iyo sabab
shilalka qalabka. Si looga hortago in awoodda falcelinta dib loogu celiyo nidaamka korontada iyo in qalabka magdhawga tamarta falcelinta uu naafo, taasoo keenta qashin iyo korodhka luminta aaladaha tamarta falceliska ah, furaha weyn ee tap-ka-beddelka waa in la hagaajiyo waqtiga si loo hagaajiyo baska. danab ilaa xadka u qalma, si aanay jirin baahi loo qabo in la joojiyo magdhow capacitor.
Sidee loo shaqeeyaa nidaamka korantada korkiisa?
Hababka nidaaminta danabyada kor-u-qaadista waxaa ka mid ah nidaaminta danab koronto iyo nidaaminta tamarta gacanta.
Nuxurka xeerbeegtida korantada ee culeyska saaran waa in la hagaajiyo koronta iyadoo la hagaajinayo saamiga isbeddelka ee dhinaca korantada sare halka korantada dhinaca korantada yar ay weli tahay mid aan isbeddelin. Dhammaanteen waan ognahay in dhinaca korantada sare ay guud ahaan tahay tamarta nidaamka, iyo tamarta nidaamka guud ahaan waa mid joogto ah. Marka tirada wareegyada dhinaca korantada sare ay korodho (taas oo ah, saamiga isbeddelka ayaa kordhay), korantada dhinaca korantada hoose ayaa hoos u dhigi doonta; liddi ku ah, marka tirada wareegyada on dabaysha dhinaca-voltage-sare la dhimo (taas oo ah, saamiga isbeddelka waa la dhimay), danab dhinaca hoose-voltage ayaa kordhin doona. Taasi waa:
Kordhinta leexashada = hoos u dhac = dhimista korantada Dhimista leexashada = kor u kaca = kororka korantada
Haddaba, xaalad noocee ah ayaa taransfooriyuhu aanu samayn karin beddelka tuubada saaran?
① Marka transformerku uu buux dhaafiyo (marka laga reebo duruufo gaar ah)
② Marka alaarmiga gaaska iftiinka ee aaladda nidaaminta korantada saaran la hawlgeliyo
③ Marka iska caabbinta cadaadiska saliidda ee qalabka xakamaynta korantada saaran uu yahay mid aan u qalmin ama aysan saliid ku jirin calaamadda saliidda
④ Marka tirada nidaaminta danabku ka badato tirada la cayimay
⑤ Marka qalabka nidaaminta danabku uu yahay mid aan caadi ahayn
Waa maxay sababta culeyska xad-dhaafka ah uu sidoo kale u qufulo beddelka tuubada-rarka?
Tani waa sababta oo ah xaaladaha caadiga ah, inta lagu jiro habka xakamaynta korantada ee ku-meel-gaarka ah ee transformer-ka ugu weyn, waxaa jira farqi danab ah oo u dhexeeya xiriiriyaha ugu muhiimsan iyo tuubada bartilmaameedka, taas oo dhalinaysa qulqulka wareega. Sidaa darteed, inta lagu guda jiro habka nidaaminta danab, resistor ah ayaa ku xiran si barbar socda si ay u dhaafaan hadda wareega iyo load hadda. Iska caabiyaha barbar socda wuxuu u baahan yahay inuu u adkaysto qulqulka weyn.
Marka korontadu ay buux dhaafiso, hadda shaqaynaysa transformer-ka wayn waxa uu ka badan yahay wakhtiga la qiimeeyay ee beddelaha tuubada, kaas oo laga yaabo in uu gubo xidhiidhiyaha kaaliyaha ee beddelaha tuubada.
Sidaa darteed, si looga hortago ifafaale arcing ee tuubada beddeleysa, waa mamnuuc in la sameeyo nidaaminta korantada kor-u-qaadka marka tafaftiraha weyni uu buux dhaafiyo. Haddii nidaamka korantada lagu qasbo, waxaa laga yaabaa in qalabka xakamaynta korantada saaran uu gubo, gaaska xamuulka waa la hawlgelin karaa, furaha weynahana waxaa laga yaabaa inuu xumaado.
Waqtiga boostada: Sebtembar-09-2024