Chng 1Phn tch ngun & ph ti. Cn bng cng sut trong HTTh.S Phm Nng VnB mn H thng inVin in H Bch Khoa H NiEE 4060 N III THIT K MNG LI INc im ngun in Mng in thit k c 1 ngun cung cp. Ngun in c th l thanh gp cao p ca nhmy in hoc trm bin p trung gian khu vc, Ngun in cung cp cng sut tc dng choph ti. Ngun in c gii hn v cng sut phn khngvi h s cng sut bng 0,85.c im ngun in in p vn hnh ca ngun in:- Ch max: 110% in p nh mc- Ch min: 105%in p nh mc- Ch sau s c: 110%in p nh mcc im ph tiCc thng sCc h tiu th1 2 3 4 5 6Ph ti cc i18 25 18 25 16 19H s cng sut0,9 0,9 0,9 0,9 0,9 0,9Mc m bo cung cp inI I I I III IYu cu CAKT KT KT KT KT KTTmax(h) 5000in p nh mc li in h p (kV)10 (22 hoc 35)c im ph tiPh ti cc tiu bng 50% ph ti cc i.H s ng thi m = 1Ph ti khng tng trng theo thi gian. th ph ti ca cc ph ti c c im g?in p nh mc ca mng in bng bao nhiu?Cn bng cng sut tc dngCh cn thc hin trong ch max.Cn bng cng sut tc dng phn nh tn s trongh thng in.Cn bng cng sut tc dng c thc hin trongcc nh my in bng cch s dng cc b iutc.Biu thc cn bng cng sut tc dng:6ND yc pt max ii 1P P m. P P= = + Cn bng cng sut tc dngCha c mng in nn khng th tnh c P.Cn bng s bLy s b: 6pt max ii 1P 5% m. P= = Cn bng cng sut phn khngCh cn thc hin cho ch max.Cn bng cng sut phn khng kim tra xemcng sut phn khng ca ngun c p ng cng sut phn khng yu cu trong mng in haykhng?Biu thc kim tra:6ND yc pt max i MBA L Ci 1Q Q m. Q Q Q Q= = + + Cn bng cng sut phn khngCha c mng in nn khng th tnh cQMBA, QL, QC.Cn bng s bLy s b:Cng sut phn khng ca ngun:6MBA pt max ii 1L CQ 15% m. QQ Q= = =ND ND NDQ P .tg = Cn bng cng sut phn khngNu QND Qycth ngun cung cp cng sutphn khng cho mng in.Nu QND< Qycth phi B CNG SUT PHNKHNG (B s b).- Tng cng sut phn khng cn b: Qb= Qyc- QND- Thit b b cng sut phn khng l cc t in.- Nguyn tc b: u tin b cho cc ph ti xa c h scos thp, b n cos = 0,95.Cn bng cng sut phn khngV cn bng s b nn khng th gii quyt trit vn thiu cng sut phn khng.- Cn bng cng sut phn khng sai c nh hng gn thit k mng in?- C s tnh ton s b QMBA, QL= QC?Cc la chn k thut ban uTruyn ti in xoay chiu.S dng ng dy trn khng, dy dn trn.S dng dy nhm li thp (ACSR).Cc mch ng dy i trn cng mt ct.Cc my bin p c ch to ti Vit Nam.