POWERMORE Co., Ltd

Website: www.powermore.vnDecember 15th, 2012CHT LNG IN NNG, SNG HI V NHNG TC HI

Sng hi l g?H s cng sut (PF) = Cos ?Cos = kW / kVA a s cc loi ph ti u c tnh cm, Cos

Sng hi l g?

Sng hi l g?Sng hi l nhng sng tun hon, hnh sin v la bi s nguyn ca tn s c bn (50 hoc 60 hz). Cc thnh phn ny khi cng vi sng sin nguyn bn (50Hz) s gy ra mo dng sng sin

Sng hi l g?Trong khi song hai dng l thnh phn c tao ra bi ph tai thi sng hi in p ch yu l sn phm ca song hai dong ngoi tr mt vi trng hp, luc ma nng lng in c to ra t inverter hoc my pht in cng sut thp.

Sng hi l g?Song hai la san phm cua cac thit bi may moc, in t hin ai nh la may tinh, h thng lu in, bin tn m t, lo h quang, b chuyn i nng lng ti to va nhiu th khac. Chung thng c goi la tai phi tuyn

S pht trin ti phi tuyn ti M

Sng hi l g?

Sng hi l g?

Thng t s 32/2010/TT-BCT v sng hiiu 6: Yu cu v sng hi in p Tng bin dng sng hi (THD) l t l ca gi tr in p hiu dng ca sng hi vi gi tr hiu dng ca in p c bn, biu din bng n v phn trm (%), theo cng thc sau:

Tng bin dng sng hi in p ti mi im u ni khng c vt qu gii hn quy nh trong Bng 1 nh sau:Bng 1: bin dng sng hi in p

Cp in pTng bin dng sng hiBin dng ring l110kV3,0%1,5%v h p6,5%3,0%

Thng t s 32/2010/TT-BCT v sng hiiu 35: Yu cu v sng hi Gi tr cc i cho php (tnh theo gi tr tuyt i ca dng in hoc % dng in ph ti ti im u ni) ca tng bin dng dng in do cc thnh phn sng hi bc cao gy ra ty theo cp in p c quy nh nh sau:i vi u ni vo cp in p h p c cng sut ti 10kW:Khch hng u ni vo cp in p h p 1 pha: gi tr dng in ca sng hi bc cao khng qu 5A;Khch hng u ni vo cp in p h p 3 pha: gi tr dng in ca sng hi bc cao khng qu 14A.i vi u ni vo cp in p trung p hoc u ni c cng sut trn 10kW v nh hn 50kW: gi tr dng in ca sng hi bc cao (THDi) khng vt qu 20% dng in ph ti;i vi u ni vo cp in p cao p hoc cc u ni c cng sut t 50kW tr ln: gi tr dng in ca sng hi bc cao (THDi) khng vt qu 12% dng in ph tiChm nht su (06) thng k t thi im pht hin thit b ca khch hng khng t c gi tr quy nh ti khon 1 iu ny, khch hng phi p dng cc bin php khc phc t c tng bin dng sng hi trong gii hn cho php.

C s sn xut cua ban co i mt vi vn nan song hai ?May bin th bi qua nhit mt du chi cung cp nng lng cho lng tai trung binh.Ting n, re do may bin th gy ra.Qua trinh qu nng n trong h thng cung cp inGiam kha nng tai in do cap qua nong

C s sn xut cua ban co i mt vi vn nan song hai ?Dy dn trung tnh trong h thng 3 pha bi t nong hoc chayin ap N-G (trung tnh -t) qua lnCu dao nhay khng ro li doHong tu in b cng sut phn khng PFNhiu trong h thng truyn thng

C s sn xut cua ban co i mt vi vn nan song hai ?Hong may phat inLi xung clock thit bi in tBin dang in ap ngun va gim h s cng sutVa con rt nhiu vn khac na

T B CNG HNG DO SNG HICONVERTORTO POWER SYSTEMHARMONICSLV

Tn tht trong my bin p 100kVA C-C, ti tuyn tnh Total loss = 1685 W

Tn tht trong my bin p 100kVA C-C, ti sng hi THDi=110 %

Total loss = 3245 W

SNG HI TRONG DY TRUNG TNHi vi nhng ph ti c s lng my tnh v thit b in t nhiu, thnh phn sng hi bi ba chy qua dy trung tnh gy nn nhiu tc hi cho h thng. Gy qu nhit, tn tht trn dy trung tnh.

SNG HI NH HNG N NG CH hng ng c, pht nhit do thnh phn th t nghchSng hi cao lm cho h s cng sut gim xung rt thp (PF)

50 Hz Rotation5th Harmonic RotationThnh phn th t nghch gy ra momen ngc Do lm cho ng c b qu nhit, rung lc, vn hnh khng n nh

C s sn xut cua ban co i mt vi vn nan song hai ?My tnh bn trung bnh tiu th khong 100 watt 60 hertz v gy ra 118 watt nng lng hi lng ph trong h thng dy in.Thit b in t khc v bin tn ng c lng ph nng lng t 5% n 20% nhng g chung thc tiu th - va chinh ngi dung phai tra cho s lang phi nay

Gii php trit tiu sng hiB lc sng hi tch cc (Acitve Filter)Loai b tt ca cac dong in hai tao ra bi tai phi tuynBu h s cng sut phan khang cua cc ti khngCai thin hiu qua cua toan b h thng cung cp in va do o tit kim chi phi cho doanh nghip

Li ch thit b lc sng hi mang li

Li ch thit b lc sng hi mang liSau khi ci thin sng hi chi ph u t cho cc thit b gim 15%.Tn tht nhit cng gim khong 10%

Li ch thit b lc sng hi mang liGiam chi phi tin in phai tra do han ch c bin dang song hai, gim tn tht nng lng t 5% n 20%Gim chi ph u t ban u cho my bin p v dy cpNng cao cht lng u ra bng vic giam thiu gian oan trong san xutCai thin cht lng bng gia tng tinh toan ven cua h thng, iu khin va lu tr d liu, gim h hng n 20%Cai thin nng sut bng han ch sa cha va bao tri.Hoan vn u t ch sau 1.5 nm

SVC Gii php cho khch hng cng nghip nngNhng ngun gy ra nh hng xu n li in:

L h quang in xoay chiu v mt chiu,l luyn nhm, Titan..My cn thp.L trung tn.M, qung.Xi mng

SVC Gii php cho khch hng cng nghip nngNhng ph ti ny gy ra nhng hin tng:

St gim in pDao ng in pH s cng sut thpSng hi Mt cn bng ba pha

SVC Gii php cho khch hng cng nghip nngSVC (Stactic Var Compensation) l thit b b trn vi tc p ng rt nhanhc s dng cho cc ph ti cng nghip nng gip ci thin cht lng in nng, nng cao nng sut nh my

SVC Gii php cho khch hng cng nghip nng

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