Ph"" lhi! Dlim , MAY , NHA , . '- A VA u.fO, DI~N ,( A "
THIET B! DI~N CUA
DI~N
D~ 557 : Khi I~p &y bai thai xi truoc hie mile mloe 6 wng hb lAng tiep tuc dang len pMi phU ten kMp chu vi d.$p m~t lop ao tro xi.
Tnlllng hQp khOng c6 khA nang phU lop ao bang tr~ x~
eho phtp bao v¢ mljl nghitng phia trong (ben tren), khin bi s6ng pM h~~i 6 vang hb I~ng bang ke dA, vat chan s6ng...
Khi c6 t~m 6 mai d6e ngoai dap blii xi do cac dong mlOc tUm tMu ra, chnphai dam bao lam khO. mai d6e bang each ~ muc mloe trong hb lAng, dbng thoi ph\! lop ao b6 sung va ~t cac thi~l bi xa.
Dien 558 : CAe trang bi (cau thang, cau nho, hang rao...)
d~ dam bao vi¢e trOngcoi cac cong trlnh ehinh va s\l an toan cho eO~g nhan van hanh phai 0 tinh trang hoan hao,
Dien 559 : H¢ th6ng thai tro xi lhUy 11Ie phai thuc hien luan hoan kin, chi eho phtp xa mloe lang trong til bai xi ra song va cac h6 mlOC sil dung chung khi c6 s\l thea thuan cua B~ y t~, Hai san va ThUy IQi,v.v...
Dien 560 : CAm nang cao dap khi chua .e6 d~ an thiet .
k~, khi nang cao dap bang vat lieu lro xi hay loai dill mern (a set, a cat) phai th\le hien trong mua khO (neu nhlltrong
d~ an thi~t k~ khOng d\l ki~n trll0e dllQe cac bien phap cong ngh¢ dae bi¢l v~·s\l can thiet dam bao eMt I11Qng viec dap dAt trong mila mua).
Dien 561 : Tai m6i nha may dieD. pMi lap va thuc hien
le eho may kich thich dt! phong d6 dl! dam bao di¢n ap dinh mile ella rO 10c6 b¢i s6 it nhat Ia 1,3.
I
Dien 564: TDK va bO phan kieh thich cuong bile lam viec pMi dtl<,le hieu ehinh sao eho khi dien apcua Itloi dien giam toi mile quy dinh, vAn 000 dam dtl<,le:
a. Dien ap kieh thich gioi han (cao nhat) e6 boi s6 it nUl . bang 2 0 eM do lam viec, neu nhu boi 86 nay khOng bi han che
boi nhung di~n ki¢n ky..thuat-
b. T6e dO lang di¢n ap kieh thich theo tri s6 dinh mileda
quy dinh,
D6i voi may pMI di¢n vii may bu dlIng bo cuon day rO 10 dtl<,le lam mat Ir1/eli~p, pMi bao dam 11/ dong han eM thoi gian lcieh thieh CtIong bile da quy dinh,
Dien 565: May pMt di¢n khi dua vao van hanh phai duoc lam viec voi lcieb thich chinh,
Trong di~u kien v~n hanh chuyen d6i til kich thich chinh sang kich thicb d1/ phong va nguoc lai, phai thuc hi¢n voi dieu kien khOng cat may phat ditn ra kh6i Itloi di¢n.
omay pMt di¢n cnon day rO to dtl<,lc lam mat tr1/c ti~p, vi¢cehuy~n d6i kich thicb neu tren pMi dtl<,lc Ih1/c hi¢n til xa.
May pMt di¢n vii may bi! dlIng bo c6 bo d~p til ph\! lac dong len may lcich thich, lhOng Ihtlilng nban vienv~n banh pMi sil d\!ng bO d6 d~ daP til 0 may bi cat nMm giam bot st! lac dong cua di¢n ap tAng cao 0 cuon day lcich lhich cua may dilng bOo
D6i voi may pMt di¢n c6 ap to mat daP Iii lam. ho m(lch rO to, pMi lap va dtla .vao lam vi¢c thtlilng xuyen bo bao v¢
.,
ch6ng qua di¢n ap cho cuon day rO to (cai ch6ng set, di¢n tro phi luy~nw ...).
Dien 566: Nhtrng nguon d1/ phong cung cap dllu chen cbo may phat di¢n lam mat bang hydrO, pMi dtl(,lC !1/dong d6ng vao lam viec khi nguiln eung cap dau chinh bi cat hoac khi ap 11/c dau giarn IMp dtloi gioi han quy dinb.:
Cac b6 dllu chen phai dtl<,lc dua vao lam vi¢c thuong xUJt~n
dl! dt! phong cho cac nguon chinh cung cap dau chett eho may phat dien cong suat til 60 MW Iro len.
Dien 567: May pMI dien tua bin hoi va may bi! dlIng bo duoc lam mal bang hydrO pMi lam viec voi ap hlc dinh milc cua hydro va bao dam dtl<,lc viec dien khi~n 11/ dong he th6ng eung cap dllu chen.
D6i voi may pMI dien cuon day duoc lam mat true ti~p bang hydro hoac bang ntloc va loi thep stato dtl<,lc lam mal bang hydro, khOng cho phcp lam viec c6 mang lai khi may lam mat bang
khong khi,
May d6 chi duoc phep lam viec ngan b(lnkhi lam mal bAng khOng khi0 cM dO khong lai khOng c6kich thicb, khi nhi¢t dO khOng khi tMp hon Irj 86 ghi trang quytrinh~n blInh may pMt di¢n cua nbll cM t(lo.
Dien 568: Trang bi dl! ch6ng cMy cho may pMI dien va may bi! dlIng b¢ dtl<,lc lam mal bang khong khi pMi luOn luOn0 tinll (r(lng san sang lam vi¢c va bao dam c6 tM nhanh ch6ng phun ntiOc vilo may pMt di¢n hoil-c may bi! dOng b¢ khi may bi cMy.
D;e" 569: cae hO lQc Irong h¢ IMng dAn ntiOc vao b¢ lam
mat kh6ng khi" ho~c b¢ lammat khi va cae binh'lraO' d6i nhiet "- de lam ma.! m~y pMt <lien va may bU dOng b¢, va cae bO IQc
'lli s6 gi6i ~n dO dao
dOng cUa ap sullt ± 0,2 ± 0,1 ± 0,01 Clla hydro, kg/cm2
Dieu 575: Ap suit db chen khi rOta may pMt di¢n ditng yen va dang quay pMi cao hon ap sullt hydro trong may. Oi6i
0,05 0,5
til 1,0
too len
nMt mot Ian,Khi hongdllng h?i, tacdl>ng bao tin" bi¢u phil hQP theo quy trinh,
Dieu 572: DO tinh khiet cua hydro khOng dllQc tMp IKln: 98% - 0 trong may phat di¢n dllQe lam mat true tiep blIng hydro va may bu d?ing bl> thuoc moi kiell.
97% - 0 trong may phat dien duoc lam mat gian·tiep bbg hydro voi ap suat du caa hydro til 0,5 kg/cm2 trO len.
95% - eung nhu tren, nhung voi ap suat du caa hydro dlloi 0,5 kg/cm2. .
Nhiet dl> diem suong cua hydro trong may phat <Ii¢n 0 ap suat lam viec khong dllQe thap bon nhiet dl> nllOcil dliu vao bl> lam mat khi, nhung khOng dllQe cao hon 35°C.
Dieu 573: Ham luong oxy trong hydro trong may phat di¢n
va may bu dOng bl>khOng dllQe vllQt qua 1,2%; con trong van kieu qua phao, trong binh tMi va binh phan Iy hydro cUa h¢
tMng lam sach dau may phat di¢n khOng dllQc wilt qua 2%.
Dieu 574: DI> dao dl>ng ap sullt hydro trong vo ntliy phat di¢n vamay bil dOng bl> khOng dllQc vlIQt qua cae tri s6 dlloi dAy:
Ap sullt dll dinh milc
cua hydro, kg/cm2 trong M thong tuan holm nuoc cat hoac tuan holm dau phai lam
viec thuong xuyen.
Dteu 570: Trong thOi gian kMi dong va van hanh may phat dien va may bu dOng b<>, phai kiem tra: nhung thong s6 ve dien cua stato, roto va h? thong kich thich; nhiet do cua cac cuon day va 16i 'IMp state, ciia mOi iruong lam mat, cua cac 6 g6i do va6 chan; di¢n trO suat va luong tieu hao nuoc clit chay qua cac cuon day; dl> tinh khiet va ap hie ciia 10m hydro; ap hie va
nhiet dl> dau chen; nhiet dl> hi) chen.6 do; dl> kin cua h¢ th6ng MOClam mat cuon day;mite dau trong cac mang<lfinClla 6 g6i do va 6 chaa 0 may pMt thuy hie.
Dieu 571: Dinh kY xac dinh cac chi tieu lam viec cua he
thong dau khi va he thdng nuoc 0 may phat dien va may bu
dong bo dang lam viecho~cd\l phong, phai theo dung quydjnh nhu sau:
a.Nm¢t dl> diem suong(dl> am) cuahydro trong may phat
dien mlli tuan it nhat mot IAn;
b. M~t dl> 10m trong may (luong hydro trong mot ngay dem) mlli tMng it nMt ml>t IAn;
c. DI> tinh khiet cUa hydro trong may; s\l khOngc6 hydro 0 cae te cua g6i tf1!cva 0 cac thanhcai <lfin di¢n ~t kin cUa cae dAu day ra bllng cach pMn tieh kiem tra hOa hQe cae khi, mlli tuAn it nMt ml>t IAn. Khi hOngbl> t\l dl>ng pMn tieh khi tae dl>ng bAo tin m¢u thi th\le m¢n thea quy trinh;
d. Ham IIIQng oxy trong hydro ~entrong may, trong van !buy l\le kieu qua phao, trong binh thoi va binh phan Iyhydro cUa
he th6ng lam ~eh db may pMt di?n - theo lieh.dl'l duy¢t. d. Dien tro suat eua mtoe clit trong h¢ tMng nllOc lam mat . eu()n day may pMt di¢n theo &mg hO kiem tra mlli tMng it
han IMp nMI va cao nMI ella muc chenh ap suat dllQC quy dinh trong quy trinh cua nita cM tao.
DIeu 576: Trang heIh6ng cung clip dllu chen, phai dua bO
di~u chlnh ap It!c dllu chen vao lam viec thuong xuyen, ngoai ra
.; heIh6ng dllu chen. kit'!u hai ngan, pMi dua ca bO dih chinh ap suat dllu nen 'lao lam viec .thllong xuyen.
Tay quay ella cac van d~t tren hethdng dAn dllu chen may pMI dien pMi duoc kep chi .; vi tri lam viec,
DIeu 577: Luong hydro ro trong mOt ngay dem kMng duoc vll\lt qua 5% milc lieu hao c6 tinh ca luong khi IMi lien I'.'C hoac dinh 1..1', khong dll\lC w\lt qua l()%loan bQ Iht'! tich khi Irong may pMt dien .; ap suattamviec,
Luong tieu hao hydro trong mot ng~y dem trong may bu dOng bn khong dll\lC vuot qua 5% toan bO tM tich khi trong may bu,
DIeu 578: May pMI dientua bin hoi voi coOn day dll\lC lam mat gian ti(!p, lam vi¢<' Iheo sO dO may pMI dien • may bi(!n ap, may pMt thUy dien voi cuOn day dll\lc lam mal gian Ii(!p ciing nhll may bU dOng bO c6 dOng co dien khili chuy~ndh c6 1M d6ng 'lao lam viec song song. bllng phllong phap It! dOng bO ho~c phllong pMp dOng bO chinh xac. Viec It!a chQn phllong pMp hoa dien la do cac C6ng ty Dien It!c quy(!1 dinh tiiy Iheo di~u Iden lam vi¢<'CUll nha may dien va linh Ir~ng
CUll 16 may.
Trang thoi kY dllu dlla 'lao v~n hanh cac may pMt dien ki~u
moi, dllQC phep ap d'.'ng phllong pMp bOa dien tt! dbng be') d6i voi chUng lrong nhilng di(;u ben binh Ihllong, neu nhll nhilng
di~u Iden kY thual nay dA u'!\lc d{; c?p toi khi giao hang ho~c
<iiico s\i thOa Ihn~n rieng voi nlll\ cM Woo
D6i voi may phat dien tua bin hoi voi cuon day duoc lam mat gian tiep va lam viec il Ihanh cai dien ap may pMI ciing nhu may phat dien voi cuon day dllQC lam mat true tiep, thi thong thuong, phai thuc hien viec hoa dien bang phuong phap dong bO chinh xac.
Khi xii19st! 00, may pMI dien tua bin hoi cong suat loi 200 MW va may pMI tMy dien cong suat toi 500 MW dll\lC phep hoa dien bang phuong phap It! dOng bo, Ciing duoc phep lam nhu v~y d6i voi may pMI dien c6 cong suat Ion hon, voi dieu kien la bOi s6 dong dien sieu qua dO so voi dong dien dinh muc khong w¢1 qua 3,0. .
Khi sil dung phuong phap dOng bO chinh xac, phai dua 'lao lam viec bo kh6a lien dOngcMng hoa kh6ng dOng bo.
Dieu 579: Truong hop he Ih6ng dieu chinh cua tua bin lam viec t6t, may phat dien sau khi b] giam tai dOl ngot ma khong phai do 16 may bi hu hong, thi duoc phep d6ng lai 'lao Illoi dien khong can xem xet kit'!m Ira may.
Dieu 580: Kh6ng h~n cM 10e dO lang dien ap il may pMI dien va may bil dOng bO.
KhOng dll\lC phep d6ng dien kich thich 'lao may pMt dien c6 cuOn day dll\lC lam mal bllng nlloc khi kMng c6 nllOc Iulln hoan Irong cuOn day.
T6c dO lang ph'.' tai tac d'.'ng d6i voi m9i may pMI dien dll\lc xac dinh Iheo nhilng di~u kien lam vi¢<',cila tua bin ho~c
cila 10 Mi.
Kh6ng ~n cM 16c dO tang dong dien stalo va r6l0 ella may pMI dien va may bil dOng bO voi cuOn day dllQc lam mal gian liCp va cila may pMtlhily dien voi cuOn day dll\lC lam mal trl$c ti(!p, .; may pMI dien lua bin hOi voi cuOn day lam mal Irl$c
litp trong cac eht dQ binh thuong, 16e dQ dO khOng vIlQI qua 16cdQ lang phu lai tac dung, nhung trong cac di~u kien sl! 00
thi khOng han che,
Dieu 581: PMi duy In cong sulll dinh mile ella may pMI dien vii may bu dOng bQo.h¢ s6 cong sullt dinh mile v6i dQ I¢eh dien ap dtn :t 5%. Dong di¢n 16n nMt eaa rOtoilng v6i nhilng gi6i han dien ap dO, Iii dong di¢n cho phep Iau dai.
O6i v6i may phat dien tuabin hoi mil dieu kien ky thuat giao hang eho phep Iilm viec Iau dai v6i phu tai tac dung' cao hon COng sullt tac dung dinh mile {lng v6i nhilng thong s6 quy dinh v~ h¢ s6 cong sullt vii caa mOi truong lam mal, eiing phai duy In COng sullt 16n nMt v6i dQ lech di¢n ap :t 5% di¢n ap dinh mile. Dong di¢n I6n nMI cua roto trong nhilng truong hop d6 Iii dong di¢n eho phep Iau dai theo cac thong s6 lam mal urong ilng.
Nhiet dQ eho phep cao nMI ilcuQn <lily vii l6i thep khi may phat di¢n vii may bi! dOng bQ lam vi¢Cv6i cong suat dinh mile vii COng sullt 16n nMt Ulu dili dllQe quy dinh tren ell sO cae thi nghi¢m v~ nhi¢t nhllng kh0!1g dllQe cao bOn cae tri s6 dil ehi dAn khi· giao hllng.
D6i v6i tllt ca cae may pMt di¢n vii \!lay bil dOng bi), di¢n ap lilIllvi¢Ccao nMt khOng dllQC vIlQt qua 110% di¢n ap dinh mile. Khi dien ap vIlQI qua 105% di¢n apdjnh mile eong sullt tolln phlln eho phep ella may pMt di¢n vii may bil dOngbQ pMi giam di tllllng ilng theo cae ehi db Irong quy djnh ella .nhll eht t\lO h~e theo cae ktl qua thi nghi¢m.
Khi di¢n ap 0 may pMt di¢n vii tnay biidllngbQ IMp bOn 95% dien ap dinh mile, dong dien slato khOng dllQe VllQI qua 105% dong di¢n eho phep lau dili ilng v6i cae IhOng s6 quy dinh
ella mOi trllClng Illm mat.
Dien 582: May pMI dien vii may bii dOng bQ khOng duoc phep qua tai lau dai v6i dong di¢n cao hon-tri 56 eho phep ung voi nhiet dQvii ap luc quy dinh ella mOi truong lam mat,
Trong nhilng di~u ki¢n SIl 00, may pMI dien vii may bu dOng bQ dllQe phep qua tai ngan han dong dien stato vii rOto theo dung nhilng di~u kien cua nha che tao, Neu khOng co tai lieu cua nha che 1\10,hie he thong dien bi SIl e6 may pMI di¢n va may bu dong bo duoc phep qua tai ngan han Iheo dong dien
~talo v6i bOi s6 quy d6i ve tri s6 dinh mile cua dong dien stato
nhu sau: .
Thili BQi s6 qua tai ella may phatdi~nva
gian maybudangBo
qua tai
phut, Cuon day Cuon day stato dUQe lam mat TT kh6ng stato duoc
qua lam mat B~ngnUQc BAng hydro gian tle'p 60 1,1 \1 - 15 \15 \15 - 10 - - \1 6 \2 \2 \15 5 1,25 \25 - 4 \3 \3 \2 3 \4 \35 \25 2 \5 \4 \3 1 2,0 ~ \5 \5
Qua tili cho phep theo dong dien kich thich may phat cua may phat dien va may bu dl>ng bo voi cuon day lam mat gian tiep duoc xac dinh theo muc qua tai cho phep cua stato. D6i voi may phat dien tua bin hoi voi cuon day roto lam mat true tiep bang hydro do Lien xo che tao neu khong c6 tai lieu cua nha che tao, muc qua tili cho phep cua dong dien roto duoc xac dinh thea bOi s6 quy d6i ve tri s6 dinh muc cua dong dien roto nhu sau:
Thai I)ian B¢i s6 qua tal ella may phatdi~ntua bin hoi qua tai,
TBO, kh6ng kEl
• phut, t TIB,TBB (tl/500 MW tra
khonq qua TB1>-t20-2 xu6ng), TB1>-120-2
60 W6 1,06
4 1,2 \2
2 1,7 1,5
1/2 2,0 -
1/3 c - 2
Dieu 583: Khi xuat hien cham dat motpha trong mach dien ap may pMt cua may pMI di¢n tua bin hoi til 150 MW tro len, may pMt thuy di¢n va may liiI dl>ng b¢ til 50 MW tro len cung nhll khi c4m dat trong cu¢n dAy stato voi dong di¢n ch~m dat IOn hOn 5A 0 cac may pMt dien tua bin hoi, may pMt thuy di¢n va may biI dong b¢ COng suat nho hon thl may phili dll\lc tIl dong cat, neu baa v¢ nay khOng tac dong thl phai nhanh ch6ng giam tai va cat may ra khoi lilai- di¢n.
May pMt dien lua bin hoi cOng suat <lllai 150 MW, may pMt _ thuy dien va may biI dl>ng bo dlloi 50 MW dang vAn hanh khi bi ch~m dal voi dong dien c4rn dal khOng qua 5A, dll(lC phep
tiep tuc lam vi¢c trong thili gian khOngqua2 giil, hel thili gian n6i tren phai cat may ra khoi Illoi dien.
'Iruong hop dA xac dinh dll(lC ch6 cham dat khOng nam trong cuen day cia may, va sau khi dA duocIcy su chinh nha may di¢n xem xet, dll\lc phep cho may phat di¢n ho~c may biI dOng bo lam viec voi cM cham dat cia htoi di¢n voi thoi gian khOng qua 6 giil.
Dieu 584: Khi xuat hien cham dat trong mach kich thich cua may phat dien tua bin hoi cong suat tit 150 MW Iro len voi