Bo co thc tp nhn thc

MC LCM U1CHNG 1: GII THIU V NH MY THU IN HO BNH21.1 Gii thiu chung21.2 Vai tr ca Nh my Thy in Ha Bnh41.3 Nguyn l hot ng v cu to Nh my Thy in6CHNG 2: CC KIN THC AN TON IN132.1. Mc ch132.2 Ngha.132.3 Ni quy, quy nh i vi ngi lao ng132.4 Cc quy nh an ton lao ng khi vo lm vic, hc tp trong nh my.142.5 Bin php k thut chun b ni lm vic khi ct in.162.6 Bin php m bo lm vic an ton162.8 Cng tc phng chy cha chy17CHNG 3 :CC H THNG CA NH MY183.1 Cc thit b trong nh my183.2 H thng t dng trong nh my213.4 H thng p trn26KT LUN30

Bo co thc tp nhn thc

Nguyn Th Vn Anh KTHH3 K54Trang 1

M Uc phn cng thc tp nhn thc ti nh my thu in Ho Bnh, trong thi gian hc hi ti y em tm hiu v nm c nhng iu c bn v hot ng ca nh my, t qu trnh sn xut in cho ti phn phi in. Trong thi gian tham quan ti nh my, c s quan tm ca cc cn b, nhn vin trong nh my v thy,c gio hng dn. n nay em hon thnh nhim v thc tp nhn thc theo ng yu cu nh trng v vin ra. Trong bn bo co ny em ch tm tt, s lc nhng kin thc, hiu bit ca mnh trong thi gian tham quan ti nh my. Do thi gian c hn nn khng th trnh khi nhng sai st trong bi bo co ny, rt mong c s ch bo ca cc thy c.Em xin chn thnh cm n! H Ni 20 thng 4 nm 2014 Sinh Vin Nguyn Thi Vn Anh

CHNG 1: GII THIU V NH MY THU IN HO BNH1.1 Gii thiu chungNh my thu in Ho Bnh l cng trnh sy dng c s vt cht ln nht nc ta th k trong th k 20. Nh my thu in Ho Bnh mang nhiu im c bit ca ring mnh. N c bit khng ch quy m m cn tnh lch s ca n: y l nim t ho ca dn tc Vit nam, bc i u tin trong s nghip cng nghip ho, hin i ho t nc. Nh my thu in Ho Bnh gi v tr quan trng trong h thng in ton quc.Cng trnh thu in Ho Bnh l cng trnh u mi a chc nng c quy m ln nht khu vc ng Nam th k 20, c xy dng nhm thc hin 4 nhim v: iu tit chng l m bo an ton cho th H Ni v cc tnh ng bng sng Hng khi xut hin l ln vi lu lng 37800m3/s. Sn xut in nng vi sn lng bnh qun 8,16 t KWh. m bo cung cp nc vo ma kh cho vng ng bng sng Hng, phc v sn xut Nng nghip, cng nghip, giao thng ng thu v dn sinh. m bo tt hn nhu cu giao thng ng thu tu 1000 tn c th i li bnh thng trong nm.Do cng trnh c nnhng li ch to ln nh vy nn c ng v nh nc quan tm. Mc d trong nhng nm thng kh khn nhng ng v nc ta vn quyt nh xy dng nh my thu in Ho Bnh trn sng . c s gip ca cc chuyn gia Lin X cng vi i ng cn b cng nhn Vit Nam tin hnh cng tc kho st v cc iu kin khi cng cng trnh.Thng 11/1979 cng trnh c khi cng xy dng. Ngy 31/12/1988, lc 14h10 pht t my s 1 quay nhng vng u tin nh du kt qu nhiu nm lao ng ca hn 3 vn cn b cng nhn cng vi cc chuyn gia Lin X trn cng trng. Ngy 4/11/1989 tin hnh ho li t my s 2. Ngy 27/3/1991 tin hnh ho li t my s 3. Ngy 19/12/1991 tin hnh ho li t my s 4. Ngy 15/1/1993 tin hnh ho li t my s 5. Ngy 29/06/1993 tin hnh ho li t my s 6. Ngy 07/12/1993 tin hnh ho li t my s 7. Ngy 04/04/1994 tin hnh ho li t my s 8.Nh vy sau 15 nm tp trung sc ngi sc ca, thang 12/1994 cng trnh c bn hon thnh a tng cng sut t ca nh my ln 1920 MW vo vn hnh.K t khi nh my thu in Ho Bnh c thnh lp ( 09/1/1988 ) cho n nay tri qua 22 nm phn u khc phc nhiu kh khn tp th cn b cng nhn vin nh my nhanh chng nm bt c k thut v lm ch cc thit b, m nhn hon ton cng tc vn hnh nh my. Mang li nhng hiu qu to ln.

1.2 Vai tr ca Nh my Thy in Ha Bnh1.2.1 Vai tr pht inThu in Ho Bnh l cng trnh ngun in ch lc ca h thng in Vit Nam. Nh my c 8 t my vi cng sut lp t 1.920 MW. Theo thit k hng nm cung cp 8,16 t kWh in cho nn kinh t quc dn. Tnh t thng 12/1994 tr v trc, nh my pht in hng nm chim 80% sn lng in c nc. Sau nm 1995 sn lng in nh my pht ra chim khong trn 45% sn lng in c nc.Nm 1994 cng vi vic khnh thnh Nh my, ng dy 500kV ng in, hnh thnh ln h thng in quc gia thng nht, chuyn ti in nng t Min Bc vo min Trung v min Nam, trong ngun in ch lc l ca thu in Ho Bnh.Hai cng trnh ngun v li truyn ti in c qui m ln nht ny gp phn nng cao s n nh, an ton v kinh t cho h thng in, to iu kin tt hn cho vic pht trin kinh t, phc v i sng nhn dn, thc y qu trnh cng nghip ho v hin i ho t nc.Tnh t khi a t my u tin vo vn hnh n ht ngy 31/3/2002, Nh my thu in Ho Bnh sn xut c hn 75 t kWh in, trong chuyn ti vo min Trung v min Nam hn 15 t kWh. Mc d trn h thng nhiu ngun pht mi tip tc c a vo nhng t trng in nng sn xut hng nm ca nh my vn chim s cao so vi ton ngnh.1.2.2 Vai tr chng lNhim v tr thu sng Hng, chng l lt gim nh thin tai cho vng ng bng bc b v th H Ni. Sng l mt nhnh ln ca sng Hng chim khong 55% lng nc trn h thng sng Hng. Theo thng k 100 nm gn dy xy ra nhng trn l ln trn sng nh nm 1902 lu lng nh l 17,700 m3/s - nm 1971 l 18.100 m3/s lm nhiu tuyn xung yu trn din rng cc tnh ng bng bc b nh Sn Ty, Hi Dng v.v... b h hng gy tn tht nng n v ngi v ti sn cho nhn dn m nhiu nm sau mi khi phc c. Cng trnh thu in Ho Bnh nm 1991 a vo tham gia chng l cho h lu sng , sng Hng v th H Ni. Hng nm ct trung bnh t 4-6 trn l ln, vi lu lng ct t 10.000 - 22.650 m3/s. in hnh l trn l ngy 18/8/1996 c lu lng nh l 22.650 m3/s, tng ng vi tn sut 0,5% (xut hin trong vng 50 nm tr li y). Vi nh l ny Cng trnh ct c 13.115 m3/s (gi li trn h) v ch x xung h lu 9.535 m3/s, lm mc nc h lu ti Ho Bnh l 2,20m, ti H Ni l 0,8 m vo thi im nh l. Hiu qu iu tit chng l cho h du v cho H Ni l ht sc to ln. c bit l vi cc trn l c lu lng nh ln hn 12.000 m3/s. tc dng ct l cng th hin r nt khi xy ra l ng thi trn cc sng , sng L, sng Thao.1.2.3 Vai tr ti tiu, chng hn, chng l cho Nng NghipLng nc trn sng chy v sng Hng chim 40%, v ma l chim ti 50%. Gi thit t ra l nu xut hin cn l nh cn l thng 8/1978 th vic ct cn l nh th no?Hng nm khi bc vo ma kh, nh my m bo duy tr x xung h lu vi lu lng trung bnh khng nh hn 680 m3/s, v vo thi k i cho nng nghip ln ti gn 1000 m3/s. Nh vy cc trm bm c nc phc v cho nng nghip gieo cy kp thi. in hnh nh ma kh 1993-1994 do hn hn ko di, Nh my thu in Ho Bnh phi x h tr (qua cng trnh x trn) hn 128,5 triu m3 nc xung h lu m bo mc nc cho cc trm bm hot ng chng hn i, gieo cy cho 0,5 triu ha t canh tc nng nghip vng h lu sng , sng Hng kp thi v.Ngoi vic iu tit tng lu lng nc v ma kit cho h lu phc v ti tiu cn gp phn y mn ra xa cc ca sng, nn tng cng din tch trng trt cc vng ny.1.2.4 Vai tr giao thng thuS hin din ca Cng trnh thu in Ho bnh gp phn ci thin ng k vic i li, vn chuyn bng giao thng ng thu c thng lu v h lu. Pha thng lu vi vng h c chiu di hn 200 km to iu kin rt thun li cho vic lu thng hng ho pht trin kinh t cho ng bo dn tc cc tnh vng ty bc ca T quc. Pha h lu, ch cn 2 tt my lm vic pht cng sut nh mc, lu lng mi my 300 m3/s s m bo cho tu 1000 tn i li bnh thng. Mt khc, do c s iu tit dng chy v ma kh, m bo lu lng nc x trung bnh khng nh hn 680 m3/s lm tng mc nc thm t 0,5 n 1.5m. V th, vic i li ca cc phng tin tu thuyn an ton, chm dt c tnh trng mc cn trong ma kit nh khi cha c cng trnh thu in Ho bnh.1.3 Nguyn l hot ng v cu to Nh my Thy in1.3.1 Nguyn l ca nh my thy inNh my thu in l nh my in lm nhim v bin i nng lng ca dng nc thnh in nng.ng c s cp dng quay cc my pht in trong nh my T l cc tua bin thu lc, trong n ng nng v th nng ca nc c bin i thnh c nng lm quay my pht in. cng sut trn trc tua bin ph thuc vo lu lng nc chy qua tua bin v chiu cao ct nc hiu dng v c xc nh bi biu thc :Ptb = 1000.Q.H.d. tua bin( kGm/s); (1-1) y:Q- Lu lng nc chy qua tua bin ( m3/s);H- chiu cao ct nc hiu dng (m );d Hiu sut ca cc thit b dn nc c tnh n tn tht ct nc trong chng, nh cc ng dn nc vo v ra khi tua bin;tua bin- Hiu sut ca tua bin thu lc ( vi tua bin thu lc cng sut trung bnh v ln, tua bin = 0,88 n 0,94 );Bit rng 1 kW = 102 kGm/s, nn ta c cng sut in u cc my pht:

PF = F = 9,81.Q.H. (kW) (1-2)Vi : F Hiu sut ca my pht thu in ( 0,95 n 0,98 ); = d. tua bin.F Hiu sut ca nh my thu in (0,85 n 0,86 ).T (1-2) thy rng, cng sut ca nh my thy in c xc nh bi lu lng nc Q v chiu cao ct nc hiu dng H, xy xay dng cc nh my thy in cng sut ln, cn to ra Q v H ln bng cch xy dng cc p ngn nc v cc h cha c dung tch ln.(hnh 1-1).Mc nc ca h cha trc p 3 gi l mc nc thng lu 1 v mc nc pha di p gi l mc nc h lu 2. chnh gia mc nc thng lu v mc nc h lu gi l chiu cao mc nc hiu dng H. H cng ln th nh my c cng sut cng cao. H cha v pha thng lu phc v cho vic tch nc, iu tit dng chy khi pht in. Cng vi vic tng chiu cao ca p, th tch h cha s tng ln, tng cng sut ca nh my. Song vic to ra cc h cha ln c lin quan n nhiu vn kinh t,x hi kh phc tp nh vic di di dn, dng nc lm ngp vng rng ln, phI xy dng nhiu p, giao thng vn tiNh my thy in c chia thnh hai loi chnh : nh my thy in kiu p v nh my thy in kiu knh dn.S nh my thy in kiu p c cho hnh 1-1 v mt ct gian my cho trn hnh 1-2.Cc nh my thy in loi ny thng c xy dng trn cc sng c dc khng ln. to ct nc cn thit, ngi ta xy dng p nhn gia dng sng 3, gian my c t sau p. nc c dn vo tua bin 6 (h 1-1) qua ng dn u vo 7 v x xung h lu qua ng dn 8. phc v cho giao thng vn tI, ngi ta xy dng u thuyn 9 cng cc knh dn 10,11.

n thit , ngi ta xy dng p nhn ginTrn hnh 1-2 v mt ct ngang ca nh my thu in kiu p. Gian my 12 t pha sau p 3, v pha h lu 2. Nc t thng lu 1 theo ng dn 4 vo bung xon 8 c phn phi vo cnh tua bin 9 ( y xy ra qu trnh bin i nng lng nc thnh nng lng c lm quay tua bin). Nc t tua bin chy xung h lu qua ng thot 10 ( ng x ).Bung xon 8 c tit din ngang thay i m bo nc phn phi u vo cnh tua bin. Trc ng ca tua bin c ni vi trc ng ca my pht 11.My pht c t trong gian my. Do cc tua bin thu lc c tc quay chm, nn cc my pht thu in ch to theo kiu cc li, nhiu cc.

Nng lng in do my pht pht ra c a vo thit b trong nh in p my pht v t y c tip tc a ln my bin p 14,theo dy dn trn khng 15, nng lng in c a ti ph ti xa hoc h thng. Dy cp 16 l dy chng st.Ca 5 dng khi sa cha tua bin, iu chnh lng nc vo tua bin c h thng cnh hng nc.1.3.2 Cu to nh my thy in Ha Bnha) H chaH cha ca nh my thu in ho bnh c cc thng s k thut chnh nh sau: Mc nc dng bnh thng 115m: y l mc nc m bo cho nh my c th vn hnh cho thi gian di m vn m bo cc ch tiu kinh t k thut. Mc nc cht l 80m v tng ng c th tch cht Vcht = 3,85 t m3. y l gii hn di ca mc nc vn hnh trong h, nh my khng c vn hnh di mc nc ny. Nu vn hnh di mc nc cht th lng ph sa ko v ln s lm nh hng n tuabin v cc thit b thu lc lin quan ng thi khin cho lng h cha b bi lng ph sa nhiu nh hng n tiu chun k thut ca h cha. H cha c din tch mt nc l 220km2 vi su 100 150m. Dung tch chng l ca h l 5,6 t m3 vi mc nc trc l l 85 - 90m, mc nc gia cng l 120m. y l phn dung tch ca h phc v cho nhim v chng l cho vng h la sng . Mc nc trong h ln xung l tu theo tng ma trong nm v tu theo ch vn hnh ca nh my. Qu trnh iu tit h cha l 1 bi ton ti u ho mc tiu rt phc tp, va phi m bo cho mc tiu s 1 l chng l, m bo an ton cho cng trnh va phi m bo cho nhu cu pht in cho h thng theo iu quc gia.b) p y l 1 cng trnh s, v i nht trong ton b cng trnh nh my vi chiu cao 128m, chiu di p l 600m, chiu rng chn p 800m, cao mt p l 123m. Vi mi nh my thu in th cu to ca p l khc nhau tu theo mc nc dng, tu theo cu to a cht, a cht, thu vn ca khu vc . p ca nh my thu in ho bnh l loi p t c xy dng trn nn chn p l ct si.loi p ny c kh nng n hi tt vi chn ng khong 6 ricte, m bo tui th cho cng trnh,p ng tt yu cu k thut.p c li chng thm gia hai bn c cc tng lc xui ngc, di p c mng khoan pht nhiu hng n su vo lp t gc.Di chn p c t cc thit b k thut o c kim tra tnh trng ca p, gip cc b phn gim st, theo di c th bit c hin trng thc t ca p, t a ra k hoch vn hnh, bo dng ti u nht m bo an ton tuyt i cho cng trnh. c) Cng trnh x nc vn hnhVo ma l, lu lng nc chy vo h ln, m bo tnh an ton cho cng trnh phi tin hnh x nc h qua h thng ca x.

70m106mCng trnh ny l 1 p b tng cao 70m v rng 106m, c chia lm 2 tng, tng di l 12 tng x y vi kch thc 6x10m vi tng lu lng x l 21000m3/s. tng trn l 6 ca x mt kch thc 15x15m vi tng lu lng x l 14400m3/s. d) Cng trnh dn nc ng hm dn nc: 8 Chiu di: 210m Ca nhn nc kiu thp cao: 70m.e) Cng trnh gian my S lng t my: 8 Lu lng 1 t my: 300m3/s. Chiu cao: 50,5m. Chiu rng: 19,5m. Chiu di: 240m. S lng my bin p: 24 mybin p 1 pha, mi my c dung lng 105MVA c u ni thnh nhm dng tng in p u cc my pht t 15,75 KV ln 220Kva ln trm chuyn tip. Gian bin p cn c 2 my bin p t dng nhn in t my pht s 1 v s 8.f) Trm chuyn tipNhn in t cc hm cp du p lc c in p 220KV theo 8 tuyn t my a ln trm chuyn tip v kt cu thnh 4 tuyn truyn ti DZ 220 KV trn khng, mi tuyn truyn ti c dung lng bng 2 t my: 480MW.g) Trm phn phi ngoi tri 220/110/35 KVTrm nhn in t 4 tuyn t trm chuyn tip.trm c 2 my bin p t ngu c dung lng 63000MW. H p t 220 KV xung 110 v 35 KV: c 2 my bin p t dng h p t 35 KV xung 6,3 KV. Cp 220 KV cung cp cho 7 tuyn DZ truyn ti in.C 3 tuyn DZ 110 KV cung cp cho tnh Ho Bnh, Sn la, Lai Chu.

CHNG 2: CC KIN THC AN TON IN2.1. Mc ch Bo v ngi lao ng. Bo v sn sut Bo v ti sn, my mc, thit b. m bo an ton lao ng, v sinh mi trng2.2 Ngha. Ngn nga tuyt i cc loi tai nan lao ng c th xy ra i vi ngi lao ng trong khi lm vic, cng tc, hc tp. Gi gn sc kho, tng nng sut lao ng. Nng cao hiu qu kinh t trong sn xut kinh doanh. Nng cao tui th ca thit b my mc. Nng cao trch nhim ca ngi s dng lao ng v ngi lao ng. Ci thin iu kin lao ng cho ngi lao ng2.3 Ni quy, quy nh i vi ngi lao ngKhi ngi lao ng vo nh my thu in Ho Bnh cng tc, hc tp, cn phi thc hin v tun th cc quy nh di y: Xut trnh giy t, cn cc v chu s kim tra, cho php ca nhn vin bo v. c bi hun k thut an ton lao ng, v sinh lao ng, trang b kin thc v an ton lao ng, bo h lao ng, kt qu kim tra t yu cu. C trang b an ton, bo h lao ng. C phiu cng tc, lnh cng tc. Khi mang thit b my mc, ti sn ra vo nh my phi xut trnh giy t hp l. C ngi hng dn khi thm quan, gim st an ton khi lm vic, hc tp, cng tc. Khng c va chm, ng chm ti thit b ang c vn hnh. Khng t ng i ra ngoi phm vi cho php. Khng c mang theo t trang, ti sch, v kh, cht chy, cht n, n dc, ho cht c hi vo khu vc nh my. Mun quay phim, chp nh nh my, my mc, thit b phi c giy php ng ca gim c. Trong khi cng tc, lm vic, hc tp, thm quan cn chu s kim tra ca n v ph trch v nhn vin thi hnh cng v. Mi ngi khng tun theo v vi phm ni quy trn u phi s l theo quy nh ca php lut.2.4 Cc quy nh an ton lao ng khi vo lm vic, hc tp trong nh my. Ngi lao ng khi vo lm vic, hc tp trong nh mycn c iu kin: sc kho, chuyn mn, c bi hun KTATL, VSL v kt qu kim tra t yu cu. Quy nh : in cao p 1 000V, in h p < 1 000V. Cc quy nh v ATL theo chuyn mn c quy nh: Vic hc tp, kim tra kin thc v quy phm KTATL phi c thc hin nh k mi nm 1 ln v c xp bc KTAT. CNV c xp bc AT 2/5 tr ln phi bit cp cu ngi b tai nn in. Vo phng c thit b in trn 1000V ch c php ca CBLKT vi s hng dn, gim st ca NVVH c trnh AT t nht 3/5 v cm n gn phn c in. i vi NVVH c lp, trng kp, trng ca bc AT t nht 4/5. Nhng ngi c php i kim tra thit b in trn 1000V 1 mnh: CBKT bc AT 5/5, NVVH chnh ti thit b qun l bc AT 3/5 v c PG cng ty duyt. Cc trng hp khc phi c t nht 2 ngi, 1 ngi hng dn hoc gim st bc AT 3/5. Khong cch chm t v khong cch AT khi i KT: tronhg nh 4-5m, ngoi tri 8-10m. NL vo v tr lm vic, hc tp, cng tc ti cc thit b in phi m bo khong cch: n 15KV l 0,7m 15 35KV l 1m 35 110KV l 1,5m 110 220KV l 2.5m 220 500KV l 4,5m. Cng vic thit b in cao p c chia lm 4 loi: Cng vic lm c ct in hon ton. Cng vic lm c ct in 1 phn Cng vic lm khng ct in gn ni c in Cng vic lm khng ct in xa ni c in.Lm vic trn cao phi tht dy an ton, hm su phi c thng gi, nh sng bo h lao ng chuyn dng.NL vi phm QTKTATL, VSMT thu theo li m c c hnh thc k lut: Ct gim thng AT hng thng. Khim trch ng thi ct gim thng AT Cnh co H tng cng tc, h bc lng Khng cho lm cng tc v in B k lut 2,3,4 phi hc tp, kim tra t yu cu mi c lm vic.2.5 Bin php k thut chun b ni lm vic khi ct in.Khi chun b ni lm vic phi chun b lm lt cc bc sau: Ct in: ct tt c ngun in m NL ln lm vic v m bo khong cch AT in. Treo bin bo, bin cm: ti cc khu vc nguy him v khu vc lp t thit b in phi b tr h thng ro chn, bin bo, tn hiu ph hp cnh bo nguy him. Th in p, tip a. t ro chn, bin cm, bin bo.2.6 Bin php m bo lm vic an ton Phiu cng tc, lnh cng tc, th tc lm PCT, lm vic theo LCT. Cho php n v cng tc vo lm vic. Gim st trong thi gian lm vic, thay i thnh phn n v, th tc ngh gii lao, di chuyn ni lm vic. Kt thc cng vic.2.7 Cp cu ngi khi b in git Quy nh T332 Xc nh in cao p, h p Nhanh chng tm bin php ct ngun in ni ngi b in git hoc tch ngi b in git ra khi ngun in. Cu cha ngay sau khi tch ngi b in git ra khi ngun in. t ngi b in git ti ni thong mt gn nht: h hp nhn to, h hi thi ngt. Bo ngay cho c s y t ni gn nht.2.8 Cng tc phng chy cha chyCn v 3 iu kin sau s to ra chy: Nguyn vt liu, cht chy. Nhit xi Phng chy: vt liu chy, cht chy c bo qun ng ni quy nh, theo thit k, thong mt, sch s,. Khng c la do ngi, in sinh ra. Cha chy: c h thng cha chy bng nc, ccbonic,.

CHNG 3 :CC H THNG CA NH MY3.1 Cc thit b trong nh my3.1.1 TuabinNh my thu In Ho Bnh c my pht kiu trc ng. y tuor-bin trc ng kiu PO-115/810/B567,2. Cc thng s: ng knh bnh xe cng tc 567,2cm Ct nc tnh ton 88m Ct nc lm vic cao nht l 109m Ct nc lm vic thp nht l 65m Lu lng nc qua tuabin cng sut nh mc v ct nc tnh ton lQ = 301,5m3/sec Tc quay nh mc l 125vng/pht Tc quay lng tc 240vng/pht Hiu sut ti a ct p nh mc = 95% Trng ti tnh ton ti a trn 16,1tn3.1.2 B iu chnh thy lcB iu tc thu lc dng iu khin tour-bin, n l b iu tc thu lc kiu P21-150-11B cng thit b du p lc MHY-12,5/I-40-12,5-2HBT. iu tc c tc dng iu chnh tn s quay v iu khin tour-bin Thu lc hng tm, hng trc cc ch khc nhau,ng thi dng iu chnh ring v iu chnh theo nhm cng sut hu cng ca t my. Cn thit b du p lc dng cung cp du T-30-OCT9972-74 hoc du tng ng c p lc cho h thng iu chnh thu lc ca tour-bin thu lc.Cc s liu k thut ng knh quy c ca ngn ko chnh 150mm p lc lm vic ca du trong h thng Iu chnh 40kG/cm3 Nhit du ca h thng iu chnh +10 +50 0C Trng lng t iu tc 1610kG3.1.3 My pht ng b 3 phaMy pht ng b dng trong nh my thu in Ho Bnh l my kiu trc ng, c stato u hnh Y, dy qun hnh sng 2 lp, c 3 u dy trung tnh v 3 u dy chnh, Z = 576, s rnh cho 1 cc v 1 pha g = 4, c 4 nhnh song song tng nhnh a = 4, bc qun 1-15-25. Cng sut biu kin Sm = 266,7MVA Cng sut hu cng nh mc Pm = 240MW in p stato nh mc Um = 15,75kV Dng stato nh mc Im = 9780A Dng kch thch nh mc Ikm = 1710A Tc quay nh mc nm = 125vng/pht Tc quay lng tc nl = 240vng/pht in p rto ph ti nh mc U = 430V Cosm 0,9 Khi lng lp rp rto l 610.103kg Khi lng ton b my pht l 1210.103kg in p pht ln thanh ci l 15,75kV3.1.4 My bin pNh my thu in Ho Bnh c hai trm in: trm 220kV v trm 500kV.My bin p dng trong nh my ny l loi my bin p 1 pha 2 cun dy kiu O-105000/220-85TB3 u ni 3 pha v lp t vo kh my pht. Cc thng s ca my bin p Cng sut nh mc ca my bin p Sm = 105MVA 3242Cng sut nh mc ca nhm 3 pha Snm = 315MVA in p nh mc pha cao p Ucm = kV in p nh mc pha h p Uhm = 15,75kV Dng in nh mc pha cao p Icm = 751,5A Dng in nh mc phi h p Ihm = 6666ACc my bin p khi c h thng lm mt du, nc kiu (tun hon cng bc du v nc), du nng ca m.b.a t lp trn i vo u ht ca bm ri qua van 1 chiu i vo b lm mt du, y du bao quanh cc dn ng(trong c nc tun hon) v c lm ngui i qua li lc vo tng hm di ca m.b.a, mt phn du i qua b lc ht m thng xuyn trng thi lm vic. Nhm m.b.a 3 pha c 4 b lm mt du, mi pha c 1 b lm mt lm vic v 1 b d phng chung cho c 3 pha, s cho php thay th b lm mt lm vic ca bt k pha no bng b lm mt d phng, mi b lm mt lm vic c 2 bm du, mt bm lm vic v mt bm d phng. chuyn cng sut t cc my bin th chnh gian bin th ngm ca nh my n trm chuyn tip ngi ta dng du p lc MBDTK-1x625/220 c tit din li cp l 625mm2, in p 220kV, 3 si ca 3 pha u t trong ng thp ng knh 219mm, du np vo ng c kh kh loI R-5A vi p lc t 1116kG/cm2. Thit b p lc b xung du p lc (AY) dng duy tr p lc du trong cc ng cp du p lc trong cc gii hn quy nh, thit b ny c lp t cao 31m trong nh hnh chnh sn xut AK v AY2 c t trong cc bung ring bit nhau, c hai t my bm u c ni ln h thng gp chung 2 phn on, cc ng ng dn du cho cc ng ng dn cp cng c u ni vi h thng ng gp , kh kh trong ng dng thit b kh kh. Thit b AY c hai b cha dung tch 4m3 cha du cp c kh kh v c duy tr chn khng bng bm chn khng, cc bm du s t ng duy tr p lc du trong ng ng gp t 13,515,5kG/cm2, nu p lc tt xung 12,5kG/cm2 th bm du d phng lm vic v c tn hiu.3.2 H thng t dng trong nh myT dng ca nh my phn t trm phn phi 220/110/35KV xung gian my c m bo cung cp t cc ngun khc nhau vi in p trung gian 6KV cung cp cho cc ph tI 0.4KV gm : 2 my bin p 3 pha 2 cun dy TD61 v TD62 u vo pha h p ca 2 my bin p t ngu trm phn phi OPY220/110/35KV. y l nhun t dng chnh ca nh my, n cung cp in ti trm phn phi 6KV KPY6-2 cao 105m v sau ti KPY6-1 cao 15,5m gian my v KPY6-3 cao 9,8m gian my. 2 my bin p 3 pha 2 cun dy TD91 v TD92 u vo pha h p ca my bin p khi ca t my 1 v 8 lm ngun d phng cho TD61 v TD62, chng cp in cho KPY6-1 v KPY6-3 gian my ri c th cp ngc ln OPY. Mt my pht in iezen cng sut 1050KW t ti cao 95 OPY u vo KPY6-2 OPY d phng trng hp s c mt in t dng nh my do d li. Phn t dng trm bin p 500KV Ho Bnh c cung cp trc tip ti ch t pha h p ca 2 my bin p t ngu 500/225/35KV qua 2 my bin p h p t 35KV xung 0.4KV loi TM c cng sut 560KVA, UN = 4%.3.3 Trm phn phi 220110/35 kV Cng ty Thy in Ha Bnh3.3.1 Gii thiu chungThu in Ho Bnh bao gm 8 t my vi cng sut t 1920 MW. truyn ti cng sut trn n cc h tiu th in, s dng trm phn phi 220/110/35 kV. S ni in trm 220kV s dng s 3/4. n thi im ny, trm phn phi bao gm : H thng hai thanh ci 220kV lm vic song. H thng thanh ci 110kV hai phn on c dao cch ly lin lc, lm vic c lp. 07 ng dy 220kV :+ ng dy 270 i Thanh Ho.+ ng dy 271 i Ninh Bnh.+ ng dy 272 i Vit Tr.+ ng dy 273 i Chm.+ ng dy 274 i Xun Mai+ ng dy 275, 276 i Ba La.- 03 ng dy 110 kV : + ng dy 171, 172 i Ho Bnh.+ ng dy 173 i Mc Chu. Hai l ni ln trm 500kV Ho Bnh trc tip vo hai thanh ci 220kV. Hai my bin p t ngu 220/110/35 kV, cng sut mi my 63.000 kVA. Hai my bin p t dng 35/6 kV, cng sut mi my 6.300 kVA, cung cp in t dng cho ton b nh my.3.3.2 Nhim v ca trm phn phiTrm phn phi220/110/35kV, Thu in Ho Bnh lm nhim v : Cung cp in ln trm 500kV Ho Bnh, lin lc h thng in quc gia qua ng dy 500kV. Cung cp in ln cc ng dy 220kV v110kV, cung cp cho h thng in min Bc. Cung cp in cho h thng t dng Thu in Ho Bnh, qua my bin p t dng TD61, TD62.Ti trm chuyn tip thc hin khi ghp i 2 b MF-MBA ri a ln thanh ci 220kV v cc ph ti. Phn 220kVdng cc my ct khng kh SF6 loi S1-245-f3 v loi 3AP1F13.3.3 c im ca trm 220/110/35kVThu in Ho Bnh l mt cng trnh trng im ca nn kinh t quc dn, sn lng in cung cp hng nm chim 8 t kWh. Do vn cung cp in phi an ton, s vn hnh linh hot trong thao tc, x l nhanh khi c s c xy ra. Cc t my pht c c ghp ni b vi my bin p, sau hai t my c ghp thnh khi ghp i a ln trm phn phi. S 3-4 vi h thng hai thanh ci 220 kV lm vic song, m bo rt linh hot v an ton cung cp in. Mi phn t ca s u c cp n bng 2 my ct, s ny cho php sa cha bt k mt my ct no th ph ti cng khng b mt in. Khi c s c trn bt k phn t no, th ch mt in phn t , cc phn t cn li vn lm vic bnh thng. Khi sa cha mt thanh ci, thanh ci cn li lm vic bnh thng, cc ph ti vn c cung cp in bnh thng.3.3.4 Thng s k thut ca mt s phn t phn ta) My bin p t ngu 220/110/35kV (AT1, AT2) M hiu : ATIITH-63000/220/110-TI Nc sn xut: Lin X c Tn s nh mc: 50Hz S pha: 3 pha Cng sut nh mc cc cun dy SC/ST/SH: 63000/63000/32000 kVA in p nh mc: 230/121/38,5kV Dng in nh mc: 158/301/480A T u dy Y-0/Y-0/-11 Tn tht ngn mch PN = 215kW Tn tht khng ti P0 = 45kW in p ngn mch phn trm:+ UNC-T = 11%+ UNC-H = 35%+ UNT-H = 22% iu chnh in p di ti cun Trung p S nc iu chnh in p 8x1,5% Khi lng du TK : 45,5 tnb) My bin p t dng 35/6kV (TD61, TD62)Lm nhim v cung cp t dng cho nh my. M hiu: TMH-6300/35T1 Nc sn xut: Lin X c Cng sut nh mc: 6300kVA Tn s nh mc: 50Hz in p nh mc: 35/6,3 kV Dng in nh mc: 104/577 A S pha: 3 pha T du dy: Y/-11 iu chnh in p di ti cun Cao p S nc iu chnh in p 6x1,5% Khi lng du TK : 4650 kgc) My bin in p 220kvLm nhim v bin i in p t 220kV xung in p tiu chun ph v cho cng vic iu khin, bo v, lm nhim v cch ly mch in p cao vi in p th cp. Nh m cc thit b o lng, iu khin v bo v pha th cp c ch to tiu chun, gn nh, lm vic c lp vi mch th cp. M hiu: HK-220-58T1, loi n pha in p s cp nh mc: kV in p th cp nh mc: 100V, V Cng sut nh mc: 2000VA T u dy Y-0/Y-0/ Loi du TK Khi lng du: 360 kg S tng s: 02d) My bin in p 110kV M hiu: HK-110-83T1, loi n pha in p s cp nh mc: kV in p th cp nh mc: 100V, V Cng sut nh mc: 2000VA Tn s nh mc: 50 Hz T u dy Y-0/Y-0/ Loi du TK S tng s: 01e) My bin dng in 110kv M hiu: T3M-132b-T1 Nc sn xut: Lin X c in p nh mc: 132 kV in p ln nht cho php: 145 kV in p th nghim: 290kV Dng in s cp nh mc: 1200A, 600 A Dng in th cp nh mc: 1A

g) Trm bin p 500kV Ti trm 500kV c 6 m.b.a t ngu1 pha 500/225/35kV ca nh ch to Jeumont-Scheider Trafnomrs c cc thng s sau: Cng sut nh mc my bin p 150/150/50MVA

in p nh mc pha cao p

Dng in nh mc 519,6/1154,7/1428,6A S t u dy ca nhm bin p Y0/Y0/-11 Trm bin p ny s dng my ct kh SF6 c 1 b truyn ng dng kh nn, mi my ct c 1 my nn kh ring.3.4 H thng p trnSng bt ngun t Trung Quc cao 1500m, c chiu di 980km. Vi din tch lu vc l 52600km2, bng khong 31% din tch lu vc ca sng Hng, lu lng chim khong 50% ca sng Hng. V kh hu th nhit tmax=42oC, tmin=1,9oC, ttb=23oC. S ngy ma trung bnh trong nm l 154 ngy vi lng ma trung bnh nm l 1960mm, lng ma ln nht trong 1 ngy m l 224mm. Dng chy trung bnh hng nm l 57,4.109m3Cc thng s ca p: cao thi cng ca p128m

cao mt p 123m

Rng mt p20m

Di theo mt p743m

Rng theo chn p700m

Di theo chn p640m

123m102m120m92mCc thng s v h cha Di 230km Rng trung bnh 0,8km Su trung bnh 0,05km Tng dung tch h 9,45.109m3 Dung tch c ch 5,65.109m3 Dung tchchng l 6. 109m.3 Chiu cao ln nht Hmax = 117m (dung tch cha > 1010 m3). Mc nc dng bnh thng 115m. Mc nc cht ca h 80m Mc nc nh nht ca h 75m. Mc nc gia cng 120m. Mc nc cho php dng ln 117m. Din tch mt thong mc nc bnh thng 115m l 108km2 Cng sut ca 8 t my l 8x240 = 1920MW. Sn lng in trung bnh l 8,4.109kwh/nm

pngnH luCa nhnThot ncGian myTrm chuyn220kV500kVThng lung dnM hnh nh my thu in Ho Bnh.

Ct +si (n nh)V chu lcMt ct A_A ca p123mLi /s khngthmLi p l t tht dy 50m, tip v hai bn l lp cui ct, lp ni ht nh, ri n cc lp ln hn, cc lp ny to thnh cc tng chng thm thu qua cng trnh. Ngoi cng ca hai bn mi p c lt bng xp bo v cc phn bn trong ca p. B mt p v cc ng dc thn p c b tng lm ng giao thng. cao thi cng ca p 128mCao mt p 123mRng mt p trung bnh 20mDi theo mt p 740m Di chn p 640mKhi lng t d 22.000.000 m3

KT LUNQua t thc tp nhn thc ny, em hc hi c rt nhiu iu, n l ngun kin thc c s qu gi cho tng lai ca sinh vin chng em. Em nhn thy c mt cch khi qut v nh my thu in, t sn xut in n phn phi, Em xin cm n s gip nhit tnh ca cc cn b nh my thu in Ho Bnh v cc thy c gio trong khoa ni chung cng nh thy gio hng dn ni ring to iu kin cho sinh vin chng em c t i thc tp b ch.H Ni 20 thng 4 nm 2014Sinh vin Nguyn Th Vn Anh