Gii thiu h thng iu khin lc bi tnh in

(-)15KVA AT1 220Vac F1 KM1 65A RT 380V/100KV Ti1 CK F2 50A Ti2 TI 50/5 BA 3 CL 2 4

- ( 0 ... 100kV)

R3 1000M

Buong LC BI

DCQ

(+)

RT2 KM2 40A AT3 32A DCR A B C

GND

1

330/50W

R2

R1

330/50W

R4

KM3 40A

HIN TH V CI T

MODUL IU KHIN TRUNG TM

MODUL O LNGAT2 32A

V1

A1

V2

A2

A B C

ASO MECHATRONICS ., JSC

GII THIU H THNG IU KHIN LC BI TNH IN Gii thiu Lc bi tnh in l h thng lc b cc ht bi c kch thc nh khi dng khng kh chy qua bung lc, trn nguyn l ion ho v tch bi ra khi khng kh khi chng i qua vng c trng in ln. Bung lc bi tnh in (hay Silo lc bi) c cu to hnh thp trn (hnh 3) hoc hnh hp ch nht, bn trong c t cc tm cc song song hoc cc dy thp gai. Ht bi vi kch thc nh, nh bay l lng trong khng kh c a qua bung lc c t cc tm cc. Trn cc tm cc, ta cp in cao p mt chiu c t vi chc cho n 100kV to thnh mt in trng c cng ln. Ht bi khi i qua in trng mnh s b ion ho thnh cc phn t ion mang in tch m sau chuyn ng v pha tm cc dng v bm vo tm cc . Hiu qu ca h thng lc bi tnh in ph thuc vo rt nhiu cc yu t nh: kch thc ca ht bi, tnh cht ca in cc, thit b in iu khin in trng, tc chuyn ng v s phn b ng u lng khng kh trong vng in trng. Ty theo lu lng bi ca bung lc m h thng t ng iu chnh in p cao p vo bung lc, sao cho t c hiu sut lc bi cao nht. Vi iu kin hot ng tt h thng c th t hiu sut lc bi t trn 95%. Bi s c tch khi cc tm cc bng nc ra hoc bng vic rung r tm cc.(-)30KVA AT1 380Vac F1 RT 380V/100KV Ti1 CK F2 Ti2 1 TI BA KM1 R2 R1 R4 3 CL 2 R3 4

- ( 0 ... 100k V)

(+)

380Vac

THP LC BIDCR KM2 AT2

HIN TH V CI T

MODUL IU KHIN TRUNG TM

MODUL O LNG

V1

A1

V2

A2A B C

Hnh 1: Nguyn l h thng lc bi tnh in S nguyn l ca h thng lc bi tnh in c ch ra hnh 1. Ngun in xoay chiu 380V (hoc 220V) c a n b bin i xoay chiu /xoay chiu 1 pha dng phn t bn dn Thyristor Ti1 v Ti2, in p sau b bin i ny c a n my bin th tng p BA (380V/100kV). in p cao p xoay chiu ca my bin th c chnh lu thnh in p mt chiu bng b chnh lu cu it CL (CL l b chnh lu cu c ch to chu c in p cao). in p cao p mt chiu c a n thp lc bi ion ho cc ht bi.www.aso.com.vn 1

ASO MECHATRONICS ., JSC

Trong s nguyn l trn hnh 1 th Modul iu khin trung tm c vai tr quan trng nht, n quyt nh n cht lng iu khin ca h thng, modul ny c cc chc nng chnh nh sau: - Tng hp cc tn hiu dng in v in ca h thng v to ra lut iu khin khng ch b bin i xoay chiu /xoay chiu v iu chnh cng sut lc bi theo nhu cu ca h thng. - Bo li v bo v cc s c ca h thng. - Gim st kh nng cch in ca bung lc thng qua xung p a v, ng thi iu chnh in p cao p ph hp vi kh nng cch in ca bung lc. - iu khin c cu rung x bi, c cu ny l mt dng chuyn ng lch tm v c truyn chuyn ng thng qua ng c DCR.

Hnh 2: Hnh nh bn trong t v modul iu khin lc bi tnh in Thng s in c bn ca h thng lc bi tnh in Thng s u vo u rawww.aso.com.vn

in p 0 220Vac (380Vac) 0 100kVdc2

Dng in Im = (10 100)A I = (10 500)mA

Cng sut S =10- 100kVA

ASO MECHATRONICS ., JSC

Tnh nng ca t iu khin T iu khin lc bi tnh in c vai tr quyt nh n cht lng v hiu sut ca h thng lc bi tnh in. N c nhim v khng ch v iu tit dng in v in trng t vo bung lc. Tnh nng c th ca t c m t nh sau: - T ng iu chnh in p xoay chiu trong di 0 220VAC hoc 0 380VAC cp cho bin p tng p. - T ng thay i cng sut lc bi theo lu lng bi. - T ng thch nghi in trng lc bi theo kh nng chu cch in ca bung lc. - T ng gim p khi rung r bi (trnh phng in khi rung r). - Hin th in p ra cp cho bin p tng p (in p s cp). - Hin th gi tr dng in cp cho bin p (dng in s cp). - Hin th in p cao th cp cho bung lc (in p ti). - Hin th dng in cp cho bung lc (dng in ti). - Bo v ct in p cung cp cho bin p, cnh bo bng n v chung khi xy ra cc s c.

Hnh 3: Hnh nh mu t iu khin lc bi tnh inwww.aso.com.vn 3

ASO MECHATRONICS ., JSC

Tnh mi ca sn phm Tnh nng mi ca sn phm l T ng thch nghi in trng lc bi theo kh nng chu cch in ca bung lc. Phn tch tnh mi ca sn phm Trong h thng lc bi tnh in c c hiu sut thu hi bi cao th cn phi m bo mt s yu cu chnh nh sau: Th nht: Kt cu ca bung lc phi m bo cho lu lng khi bi qua bung lc c n nh v ph hp, th tch ca bung lc phi ln. Th hai: Kh nng chu cch in ca in cc trong bung lc phi tt v n nh. Th ba: H thng in ng lc v iu khin phi hot ng n nh v t ng iu chnh c cng sut lc.

Trong ba yu cu trn th yu cu th nht l ph thuc vo thit k ban u ca bung lc. Yu cu th hai v th ba th ph thuc vo tnh hnh c th vo tng thi im sn xut v iu kin thit b. Tri qua nhiu nm nghin cu v cc h thng lc bi tnh in do Trung Quc ch to ang hot ng Vit Nam, nhm nghin cu chng ti nhn thy mt s hin trng ang tn ti hu ht cc h thng hin nay l: Kh nng chu cch in ca bung lc khng n nh (khi cao, khi thp) gy phng in, hiu sut lc bi khng cao. Nguyn nhn trn l do bung lc hot ng trong mi trng bi nhiu, cng vi mi trng kh hu ca Vit Nam c m cao, nn kh nng cch in trong bung lc b nh hng rt ln. Khi cch in trong bung lc b gim s gy s c phng in, lm cho h thng bo v tc ng lin tc v vic lc bi b gin on, ng thi lm tng nguy c hng it chnh lu cao p. khc phc hin tng th ngi vn hnh phi v sinh bung lc v t li gii hn in p nh hn gi tr chu c ca bung lc, nhng n khi bung lc c c cch in cao hn th h thng li khng tng c in p ln cao hn c, v ang b khng ch bi gi tr gii hn c nh t trc, iu ny dn n hiu qu lc bi khng cao. Trc thc trng trn, tng hiu qu lc bi v trnh c cc s c phng in trong bung lc th chng ti c gii php ci tin thm b t ng iu chnh gii hn in p thch nghi theo kh nng chu cch in ca bung lc, m bo sao cho lun t c in p (in trng) vo bung lc l ln nht c th. Gii php ny mang li hiu qu thu hi bi cao hn v thay th c mt phn cng vic ca ngi vn hnh, mt khc n rt ph hp vi iu kin sn xut v kh hu ca Vit Nam. Hiu qu kinh t, x hi ca sn phm Khi c s tham gia ca h thng lc bi tnh trong dy chuyn sn xut, s gi cho mi trng khu vc lun m bo tiu chun mi trng v cht lngwww.aso.com.vn 4

ASO MECHATRONICS ., JSC

khng kh kh thi cng nghip i vi bi v cc cht v c (TCVN 5939- 2005), gip cho cc Nh my t tiu chun ISO trong sn xut. Ngoi vn bo v mi trng, h thng lc bi tnh in hot ng tt cn cho php cc Nh my, x nghip thu hi li c mt lng nguyn liu khng nh c trong bi, v d ti cc nh my Xi mng th mi bung lc s thu hi c khong t 1 2 tn xi mng /1 ca sn xut. Cn i vi cng ngh ch bin qung bng thiu kt th lc bi tnh in l gii php tt nht thu hi qung sau thiu kt. Phm vi ng dng ca sn phm H thng lc bi tnh in c th c p dng trong mt s lnh vc sau: Lc bi trong cc Nh my sn xut xi mng. Lc bi than trong cc Nh my nhit in. Lc bi kh than trong cc Nh my sn xut gang thp, Nh my sn xut gch. Lc v thu hi qung sau thiu kt trong cc nh my khai thc v ch bin khong sn. Lc bi cho cc hm m, hm giao thng. H thng kh m tnh in trong sn xut axit.

a ch lin h: Cng ty C phn C in t ASO Km 15 Quc l 3 TX Sng Cng Tnh Thi Nguyn Vit Nam Tel : (084)280.3735938 Fax: (084)280.3735939 Email: asojsc@gmail.com Website: www.aso.com.vn hoc www.aso.vn

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