Habka xisaabinta hadda jira jebiye

Marka hore xisaabi wadarta awoodda P ee dhammaan qalabka korantada, xisaabinta wadarta hadda jirta ee A = P/U,beddelka daadintawaa in uu ka weynaadaa wadarta hadda jira, waa in uu jiraa xad gaar ah, ama marka la rakibo qalabyada kale ee korantada ma adkeysan doonaan.Soo daadinta haraaga qoyska ee hadda jira 30MA wuu awoodaa.Furaha daadintaGuud ahaan ma aha shaqada ilaalinta xad-dhaafka ah, haddii aad rabto inaad ka ilaaliso xariiqda wareegyada yar yar, jebiye yar ma dooran karo mid aad u weyn.Guud ahaan, nooca C ayaa la isticmaalaa.

Xakamaynta wareegyada yaryarIsticmaal hab xisaabin fudud oo leh khaladaad aan aad u weynayn oo laga aqbali karo injineernimada:

(1) ee 10/0.4kV darajada danab eewareeg yar, waxay tixgelin kartaa dhinaca tamarta sare ee awoodda wareegga gaaban waa mid aan xad lahayn (dhinaca 10KV ee awoodda wareegga gaaban guud ahaan waa 200 ~ 400MVA ama xitaa ka weyn, sidaas darteed marka loo eego aan xadidnayn si loo tixgeliyo, qaladku wuxuu ka yar yahay 10%).

(2) Gb50054-95 "Xeerka Naqshadda Qaybinta Awood-hooseeya" 2.1.2 qodobbada: "Marka wadarta hadda la qiimeeyay ee matoorka ku xiran meel u dhow wareegga gaaban ay ka badan tahay 1% ee hadda jira, saameynta falcelinta mootada hadda waa in lagu daraa.Haddii wakhtiga gaaban ee wareegga gaaban yahay 30KA, qaado 1% ka mid ah, kaas oo noqon doona 300A.Wadarta awooda matoorku waxay ku saabsan tahay 150KW, iyo marka la bilaabay isku mar, jawaab celinta hadda lagu daray waa inay noqotaa 6.5∑In.

(3) danab ka impedance UK ee mini-circuit breaker ka dhigan wareegga gaaban dhinaca (wareeg), marka dhinac gaadho ay hadda la qiimeeyo, danab dhinaca asalka ah waa boqol dhibcood qiimaha ay danab lagu qiimeeyay.Sidaa darteed, marka korantada asaasiga ahi ay tahay tamarta la qiimeeyay, hadda ka labaad waa wakhtiga wareegga gaaban ee la filayo.

(4) Dhinaca yar ee jabiyaha wareegga lagu qiimeeyay hadda Ite=Ste/1.732U Ste waa awoodda wareegga yar yar (KVA), Ue waa qaybta yar ee lagu qiimeeyay korantada (wax culays la'aan), Ue= 0.4kV marka 10 / 0.4kV, sidaas darteed, dhinaca labaad ee lagu qiimeeyay hadda ee jabiyaha-yaraha waa in loo xisaabiyaa si fudud sida awoodda yar-wareegga X1.44 ~ 1.50.

(5) Marka loo eego qeexida Uk ee (3), wareegga gaaban ee hadda jira ee dhinaca kaaliyaha (saddex-weji gaaban-wareeg gaaban) waa qeexitaanka I(3) ee Uk, iyo wareegga gaaban ee hadda jira dhinaca caawimada (saddex-waji-gaaban) waa I(3)=Ite/Uk, kaas oo ah qiimaha waxtarka leh ee AC.

(6) Isla sidaas oo kalejebiye yar-wareegaawoodda, haddii uu jiro wareeg gaaban oo u dhexeeya labada weji, ka dibna I (2) = 1.732I (3)/2=0.866I(3)

Xisaabinta kor ku xusan waa qiimaha hadda ee wareegga gaaban ee ka soo baxa wareegga wareegga yar, kaas oo ah shilka wareegga gaaban ee ugu daran.Haddii ay jirto masaafo gaar ah oo u dhaxaysa barta wareegga gaaban iyo jabiyaha-yar-yar, ka fiirso xannibaadda khadka.