B CNG NGHIP S: 13/2007/Q-BCN CNG HO X HI CH NGHA VIT NAMc lp - T
do - Hnh phc----- o0o -----H i , gy 13 thng 03 nm 2007QUYT NH CA B
TRG B CG GHIPV vic ban hnh Quy trnh X l s c h thng in quc giaB TRG
B CG GHIPCn c gh nh s 55/2003/-CP ngy 28 thng 5 nm 2003 ca Chnh ph
quy nh chc nng,nhim v, quyn hn v c cu t chc ca B Cng nghip;Cn c Lut
in lc ngy 03 thng 12 nm 2004;Cn c gh nh s 105/2005/-CP ngy 17 thng
8 nm 2005 ca Chnh ph quy nh chi tit vhng dn thi hnh mt s iu ca Lut
in lc;Theo ngh ca Cc trng Cc iu tit in lc v V trng V Php ch,QUYT
NH:iu 1. Ban hnh km theo Quyt nh ny "Quy trnh X l s c h thng in quc
gia".iu 2. Quy trnh ban hnh km theo Quyt nh ny thay th Quy trnh X l
s c h thng in quc giac ban hnh theo Quyt nh s 90/NL-KHKT ngy 22
thng 02 nm 1994 ca B trng B Nnglng. Quyt nh ny c hiu lc sau 15 ngy,
k t ngy ng Cng bo.iu 3. Chnh Vn phng B, Chnh thanh tra B, cc V
trng, Cc trng thuc B, S Cng nghipcc tnh, thnh ph trc thuc Trung ng,
Tp on in lc Vit Nam v cc t chc, c nhn hot ngin lc chu trch nhim thi
hnh Quyt nh ny./.QUY TRHX l s c h thng in quc gia(ban hnh km theo
Quyt nh s 13/2007/Q-BCngy 13 thng 3 nm 2007 ca B trng B Cng
nghip)Chng IQUY NH CHUGiu 1. Quy trnh ny quy nh nhng nguyn tc v hot
ng thc hin x l s c h thng in qucgia nhm nhanh chng loi tr s c, khi
phc li ch lm vic bnh thng ca h thng in quc gia.iu 2. Quy trnh ny p
dng i vi cc cp iu , cc t chc, c nhn tham gia hot ng in lc vs dng in
trn lnh th Vit Nam c thit b in hoc li in u ni vi h thng in quc
gia.Trong trng hp mua bn in qua bin gii, vic thao tc cc thit b u ni
c thc hin theo thathun iu c k kt gia hai
bn.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...1
of 24 6/16/2009 2:07 PMTrn c s ca quy trnh ny, cc cp iu , cc t chc,
c nhn tham gia hot ng in lc v s dngin trn lnh th Vit Nam bin son
quy trnh x l s c c th i vi cc thit b cng ngh trong phmvi qun l vn
hnh v iu khin ca n v.iu 3. Gii thch t ng1. Cp iu iu khin l cp iu c
quyn iu khin thit b theo quy nh ti Quy trnh iu hthng in quc gia ban
hnh km theo Quyt nh s 56/2001/Q-BCN ca B trng B Cng nghipngy 26
thng 11 nm 2001.2. n v qun l vn hnh l n v s hu, qun l v vn hnh thit
b u ni vi h thng in qucgia, bao gm: cc n v pht in, n v truyn ti in,
n v phn phi in.3. H thng in quc gia l h thng cc trang thit b pht
in, li in v cc trang thit b ph trc lin kt vi nhau v ch huy thng nht
trong phm vi c nc, thuc quyn iu khin v kim traca cp iu h thng in
quc gia.4. H thng in min l h thng in min Bc, min Trung hoc min Nam
c cp in p 220 kV vthuc quyn iu khin v kim tra ca cp iu h thng in
min.5. H thng phn phi l h thng in c cp in p 35 kV v thuc quyn iu
khin ca cp iu phn phi.6. K s h thng in quc gia l k s iu hnh h thng
in trc tip ch huy iu h thng inquc gia.7. K s iu hnh h thng in min l
k s iu hnh h thng in trc tip ch huy iu h thngin min.8. Lnh o trc
tip l ngi ca n v c quyn ch huy v ra lnh trc tip i vi nhn vin vn
hnhtheo quy nh ca n v .9. My ct nhy (hoc bt) l my ct m do bo v rle
v t ng tc ng.10. Nhn vin vn hnh l ngi tham gia trc tip iu khin qu
trnh sn xut in, truyn ti in vphn phi in gm: K s iu hnh h thng in;
iu vin; trng ca nh my in; trng kp hoctrc chnh trm in.11. n nh: n nh
tnh l kh nng ca h thng in sau nhng kch ng nh phc hi c ch banu hoc
rt gn vi ch ban u (trong trng hp kch ng khng c loi tr); n nh ng l
khnng ca h thng in sau nhng kch ng ln phc hi c trng thi ban u hoc
gn trng thi banu (trng thi vn hnh cho php).12. S c l tnh hung bt
thng xy ra gy nh hng n vn hnh an ton h thng in.13. Trm in l trm bin
p, trm ct, trm b.Chng IIV HH H THG I QUC GIAMc
1http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...2
of 24 6/16/2009 2:07 PMKT LI H THG Iiu 4. Nguyn tc kt li trong h
thng in:1. Cung cp in an ton, lin tc;2. m bo s hot ng n nh ca ton b
h thng in quc gia;3. m bo cht lng in nng;4. m bo h thng in quc gia
vn hnh kinh t nht;5. Dng ngn mch khng vt qu gi tr cho php i vi thit
b t ti cc nh my in hoc trmin;6. Linh hot, thun tin trong thao tc v
x l s c;7. m bo tnh chn lc ca r le bo v.iu 5. Ti cc trm in c s hai
thanh ci hoc s hai thanh ci c thanh ci vng, mt thanh ciphn on... cc
my ct s chn ni vo thanh ci s chn, cc my ct s l ni vo thanh ci s l,
myct lm nhim v lin lc thng xuyn ng ch vn hnh (tr nhng trng hp c bit
do yu cuvn hnh).iu 6. i vi cc trm in c s kt li khc vi quy nh ti 0,
tt c cc my ct c thit k ch lm vic thng xuyn ng, cc my ct thit k ch d
phng thng xuyn m. i vitrm in cha hon chnh, cn tnh ton ra cc gii php
k thut, cc kin ngh ln cp c thNm quyngii quyt p ng yu cu vn hnh an
ton chung cho ton h thng in.iu 7. Trn h thng in 500 kV cc phn t ca
ng dy (cc khng b ngang, cc t b dc...) lun ch vn hnh. Khi kt li thiu
mt trong cc phn t ny phi c tnh ton, kim tra c th v cphng thc vn hnh
trc.iu 8. i vi li in c cp in p 220 kV1. Tt c cc ng dy 220 kV hin c
thng xuyn ch vn hnh.2. Tt c cc my bin p lc 220 kV hin c thng xuyn
trng thi vn hnh.3. Trng hp c bit cn tch ng dy, my bin p ch d phng
cn c tnh ton xem xtc th trn c s m bo cung cp in an ton, lin tc.iu
9. i vi li in c cp in p 110 kV1. Tt c cc ng dy c cp in p 110 kV ni
cc nh my in vi h thng thng xuyn ch vn hnh.2. Hn ch kt li mch vng cp
in p 110 kV.iu 10. Phn cp lp s kt li c bn1. Kt li c bn ca h thng in
c cp in p 220 kV do cp iu h thng in quc gia lp
vhttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...3
of 24 6/16/2009 2:07 PMc Tng gim c Tp on in lc Vit N am hoc Ph Tng
gim c c y quyn ph duyt.2. Kt li c bn ca h thng in c cp in p > 35
kV n 110 kV do cp iu h thng in minlp v phi c s ng ca cp iu h thng
in quc gia. Kt li c bn ca li in > 35 kVn 110 kV do gim c cp iu
min ph duyt.3. Kt li c bn ca h thng phn phi (cp in p 35 kV): do cp
iu h thng phn phi lp vdo gim c cng ty in lc, in lc tnh, thnh ph ph
duyt.Mc 2H THG R LE BO V V T G Iiu 11. Trang b r le bo v v t ng1.
Cc thit b in ca h thng in phi c bo v chng cc dng ngn mch v cc h hng
trongch vn hnh bnh thng bng cc trang b r le bo v, aptmt hoc cu chy
v cc trang b t ngtrong c t ng iu chnh v t ng chng s c.2. Cc trang b
r le bo v v t ng (k c r le sa thi ti theo tn s thp) phi thng xuyn
ch vn hnh, tr cc trang b m theo nguyn l hot ng, iu kin ch lm vic ca
h thng nng lngv tnh chn lc phi tch ra khi vn hnh.3. Tn hiu ghi nhn
s c v cnh bo phi lun sn sng hot ng.4. Ch vn hnh thiu trang b r le
bo v hoc t ng phi c cp iu iu khin quy nh cth.iu 12. Yu cu v r le bo
v v t ng khi a thit b in vo vn hnh1. Cc thit b in v cc ng dy dn in
ch c mang in khi cc bo v r le chng mi dng sc cng c a vo lm vic.2.
Khi tch ra khng cho lm vic hoc b h hng mt vi dng bo v r le, th nhng
trang b bo v r lecn li vn phi bo m bo v y chng mi dng s c cho cc
thit b in v ng dy dn in.N u nhng iu kin khng t c th phi t bo v tm
thi hoc ct in cc thit b hoc ngdy (tr trng hp c yu cu c bit v cung
cp in s c xem xt v bo co cp c thNmquyn quyt nh).3. Khi a bo v tc ng
nhanh ca phn t u ni ra khi vn hnh, th ty theo iu kin n nh cnphi a
bo v tc ng nhanh tm thi hoc gia tc bo v d phng hoc chnh nh li r le
bo vkhc cho ph hp.iu 13. Trong vn hnh phi m bo cc iu kin cc trang
thit b r le bo v v t ng, o lngv iu khin lm vic bnh thng theo cc quy
nh hin hnh ca B Cng nghip v quy trnh k thutca nh ch to (nhit , Nm,
rung cho php v sai lch thng s lm vic vi thng s nhmc...).iu 14. Cc t
bng bo v r le, t ng cng nh cc bng v cc bn iu khin, mt trc v phang
sau phi ghi tn theo tn gi iu , cc trang b t trong bng hay sau bn iu
khin c 2 mtu phi ghi hoc nh du ph hp vi s . Trn t bo v r le v t ng,
trn cc trang b t trong phi ghi tn tng ng nhn vin vn hnh thao tc
khng b nhm
ln.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...4
of 24 6/16/2009 2:07 PMiu 15. Theo di vn hnh v khc phc khim khuyt
ca cc trang thit b r le bo v v t ng1. Tt c cc trng hp tc ng sai hoc
t chi tc ng ca cc trang b bo v r le v t ng cngnh nhng thiu st pht
hin trong qu trnh vn hnh phi c xem xt phn tch v loi tr trong
thigian ngn nht.2. Mi trng hp tc ng sai hoc t chi tc ng ca trang b
bo v r le v t ng cng nh khi phthin c h hng trong mch hoc thit b cn
phi thng bo ngay vi n v qun l vn hnh v cp iu tng ng.3. Vic c lp hoc
a tr li cc r le bo v v t ng vo vn hnh ch c thc hin khi c mnhlnh ca
k s iu hnh h thng in hoc iu vin ca cp iu iu khin.iu 16. i vi ng dy
c trang b hai mch bo v1. Cc my ct ti cc trm in u phi c hai cun ct
vi hai ngun thao tc c lp Hai mch bo vny c lp vi nhau, lp trn hai t
bng ring, c ngun thao tc ring v hai mch i ct ring.2. Khi c h hng
hoc tch ra khi vn hnh c hai mch bo v, ng dy phi tch ra khi vn
hnh.3. Khi c h hng mt mch bo v, ng dy vn c th vn hnh trong cc trng
hp sau: Kim trathng k hot ng ca h thng bo v, th nghim khNn cp, kim
tra li hng cng sut khi ng dyang vn hnh cng nh khi sa cha cn thit,
ng thi tha mn cc iu kin sau:a) Xc sut xut hin s c thp da trn c s
sau y:- Thi tit c d bo trc l ti trong sut thi gian tin hnh cng
vic;- Mc xut hin s c do chy rng thp;- Khng c cng vic no khc ang tin
hnh trong khu vc ng dy.b) Mch bo v cn li phi hon ton tin cy, bao gm
c knh thng tin lin lc km theo. N u cng vicc tin hnh c hai u ca on
ng dy, cn phi m bo rng cc bo v ca cng mt mch phic tch ra khi vn
hnh;c) Khi mt mch bo v c tch ra theo k hoch phi m bo khi phc nhanh
chng mch bo v nynu c yu cu khNn cp do iu kin thi tit xu i hoc pht
sinh nhng vn khc.Mc 3IU CHH I Piu 17. iu chnh in p ca thit bN u
khng c quy nh ring ca nh ch to, vic iu chnh in p ca thit b c quy nh
nh sau:1. My pht in, my b ng ba) Khi lm vic vi cng sut v cos nh mc,
chnh lch in p cho php 5% so vi in p
nhmc;http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...5
of 24 6/16/2009 2:07 PMb) Trng hp in p ra ngoi phm vi cho php, trng
ca nh my in khng c php iu chnhkch t bng tay. Trng hp ny trng ca nh
my in phi bo co ngay tnh hnh cho cp iu cquyn iu khin.2. My bin p
lca) Trong iu kin vn hnh bnh thng:- Cho php my bin p c vn hnh lu di
vi in p cao hn in p nh mc tng ng vi uphn p 5% vi iu kin my bin p
khng b qu ti v 10% vi iu kin ti qua my bin p khng qu25% cng sut nh
mc ca my bin p.- Cho php my bin p c vn hnh vi in p cao hn in p nh
mc tng ng vi u phn pngn hn 10% (di 6 gi trong mt ngy m) vi iu kin
my bin p khng b qu ti.b) Trong iu kin s c- Cc my bin p tng p v h p,
my bin p t ngu im trung tnh khng c u phn p hockhng ni vi my bin p
iu chnh ni tip c php lm vic lu di vi in p cao hn in p nhmc 10% vi
iu kin my bin p khng b qu ti.- i vi my bin p t ngu im trung tnh c u
phn p hoc ni vi my bin p iu chnh nitip, mc tng in p cho php c xc nh
theo s liu ca nh ch to.c) Khi in p vn hnh vt qu tr s chnh nh bo v
qu p m bo v khng tc ng hoc vt qu20% so vi in p nh mc ca u phn p tng
ng khi khng c bo v qu p, nhn vin vn hnhphi thc hin tch ngay my bin
p khi vn hnh trnh h hng.iu 18. iu chnh in p thanh ci ca trm in1. in
p ti thanh ci ca cc trm in cp in p 110 kVa) Trong ch vn hnh bnh
thng:Cp in p danh nh Phm vi in p c php dao ng110 kV 104 kV - 121
kV220 kV 209 kV - 242 kV500 kV 475 kV - 525 kVb) Trong ch vn hnh
cha n nh:Cp in p danh nh Phm vi in p c php dao ng110 kV 99 kV - 121
kV220 kV 198 kV - 242
kVhttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...6
of 24 6/16/2009 2:07 PM500 kV 450 kV - 550 kV2. in p ti thanh ci ca
cc trm in cp in p < 110 kV v ti cc im m cp cho khch hnghoc theo
tha thun vi khch hng:a) Trong iu kin li in n nh in p ti im m cp cho
khch hng c php dao ng trongkhong 5% so vi in p danh nh vi iu kin
khch hng phi m bo cos 0,85 v thc hinng biu ph ti tha thun trong hp
ng;b) Trong trng hp li in cha n nh, in p c php dao ng trong khong
+5% v -10% so viin p danh nh.iu 19. Gii hn iu chnh in pGii hn iu
chnh in p c xc nh theo:1. Gi tr in p ln nht cho php thit b vn hnh
lu di theo quy nh ca nh ch to.2. Gi tr in p nh nht cho php vn hnh
lu di phi m bo an ton cho h thng t dng ca nhmy in, m bo mc d phng n
nh tnh ca h thng in hoc ng dy c lin quan (gii hn nycn c vo kt qu
tnh ton cc ch vn hnh ca h thng in m quy nh ring bng cc iu lnh).3.
Gi tr in p m bo cung cp in cho khch hng.iu 20. N guyn tc iu chnh in
p trong h thng in quc gia1. m bo in p trong gii hn cho php, khng gy
qu p hoc nguy him cho cc phn t trong hthng in.2. m bo ti thiu chi
ph vn hnh v tn tht.3. m bo ti u cc thao tc iu khin.iu 21. Cc phng
tin iu chnh in p trong h thng in c chia thnh 3 nhm1. iu chnh ngun
cng sut phn khng: my pht, t b ngang, khng b ngang, my b ng b vthit
b b lnh.2. Thay i thng s ng dy (nh t b dc...), thay i kt li (ng ct
ng dy...).3. Thay i tro lu cng sut phn khng: iu chnh nc phn p my
bin p, my bin p ni tip.iu 22. Phn cp iu chnh in p1. Cp iu h thng in
quc gia chu trch nhim tnh ton, quy nh in p v iu chnh in ptrn h thng
in 500 kV; tnh ton v quy nh in p ti mt s nt chnh thuc li in 220
kV.2. Cp iu h thng in min cn c vo mc in p ti cc im nt chnh do cp iu
h thngin quc gia quy nh tnh ton, quy nh in p v iu chnh in p h thng
in thuc quyn iukhin cho ph hp vi gii hn quy nh.3. Cp iu h thng phn
phi cn c vo mc in p ti cc im nt do cp iu h thng
inhttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...7
of 24 6/16/2009 2:07 PMmin quy nh tnh ton, quy nh in p v iu chnh in
p ca li phn phi ph hp vi gii hnquy nh.iu 23. Cn c vo phn cp iu chnh
in p, cc cp iu tnh ton v quy nh cc nt kim tracn kim tra in p. Cc nt
kim tra in p c la chn sao cho in p ti cc nt c trng choin p ca khu
vc cn iu chnh.iu 24. Khi in p cc nt dao ng qu gii hn quy nh, k s iu
hnh h thng in quc gia, ks iu hnh h thng in min v iu vin phi phi hp
iu chnh khi phc in p nh quynh. Cc bin php thc hin a in p v gii hn
cho php:1. Thay i ngun cng sut phn khng ang vn hnh ca cc my pht, my
b ng b, thit b b tnhtheo th t t gn n xa im thiu, tha v cng.2. Huy
ng thm cc ngun cng sut phn khng ang d phng cn li ca h thng khi in p
thp, ctbt cc t b ngang khi in p cao.3. Phn b li tro lu cng sut
trong h thng in.4. iu chnh nc my bin p cho ph hp vi quy nh ca thit
b, iu chnh in p cho ph hp vitnh hnh thc t (c xt gii hn cho php i vi
thit b).5. Ct ph ti cc nt c in p thp theo th t u tin c duyt. Cc ph
ti ct trong thi gian sc in p thp ch c ng li theo lnh ca cp iu lnh
ct.Mc 4IU CHH T Siu 25. Tn s h thng in quc gia phi lun lun duy tr
mc 50 Hz vi s dao ng 0,2 Hz.Trng hp h thng in cha n nh cho php lm
vic vi lch tn s l 0,5 Hz.iu 26. Din bin qu trnh iu chnh tn s h thng
in1. iu chnh tn s s cp l qu trnh iu chnh tc thi c thc hin bi s lng
ln cc t my cb phn iu chnh cng sut tua bin theo s bin i ca tn s.2.
iu chnh tn s th cp l qu trnh iu chnh t ng tip theo ca iu chnh tn s
s cp thc hinbi mt s cc t my phi c quy nh c th nhm a tn s tr li gi
tri danh nh.iu 27. iu chnh tn s h thng in quc gia c chia thnh ba
cp:1. iu chnh tn s cp I l iu chnh ca b t ng iu chnh cng sut ca cc t
my pht in c quy nh trc nhm duy tr tn s h thng in mc 50 0,2 Hz;2. iu
chnh tn s cp II l iu chnh ca b iu chnh cng sut ca cc t my pht in c
quynh trc nhm a tn s h thng in v gii hn 50 0,5 Hz;3. iu chnh tn s
cp III l iu chnh bng s can thip ca k s iu hnh h thng in a tn sh
thng in vn hnh n nh theo quy nh hin hnh v m bo phn b kinh t cng sut
pht cc nhmy in.iu 28. Phn cp iu chnh tn
shttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...8
of 24 6/16/2009 2:07 PM1. K s iu hnh h thng in quc gia l ngi ch huy
iu chnh tn s trong ton h thng in qucgia. K s iu hnh h thng in min,
trng ca cc nh my in phi thng xuyn theo di tn s,nghim chnh chp hnh
quy trnh v mnh lnh ca k s iu hnh h thng in quc gia v vic iuchnh tn
s.2. K s iu hnh h thng in min ch huy iu chnh tn s h thng in min
(hoc mt phn hthng in min) trong trng hp h thng in min (hoc mt phn h
thng in min) tch khi hthng in quc gia hoc c s y quyn ca k s iu hnh
h thng in quc gia.iu 29. ng h tn s ca cc cp iu v nh my in phi c kim
tra v hiu chnh theo ngquy nh m bo chnh xc cho php (khng vt qu 0,01
Hz).iu 30. T chc thc hin iu chnh tn s khi h thng vn hnh bnh thng1.
K s iu hnh h thng in quc gia quy nh mt nh my in hoc mt nhm nh my in
lmnhim v iu tn cp I. Cn c vo nhim v phn cng iu tn m cc nh my in iu
tn cp I acc b t ng iu chnh cng sut, tn s vo lm vic ph hp thc t.2. K
s iu hnh h thng in quc gia thng xuyn theo di lng cng sut cn d phng
ca nhmy in iu tn cp I, xu hng thay i ph ti ca h thng ch ng iu chnh
cng sut pht canh my in iu tn v cc nh my in khc.3. Khi thit b ca cc
nh my in iu tn cp I c nhng biu hin bt thng hoc gn ht cng sut dphng,
trng ca cc nh my in phi kp thi bo co cho k s iu hnh h thng in quc
gia bit.4. Khi cc nh my in iu tn cp I khng cn cng sut d phng iu tn,
k s iu hnh h thngin quc gia phi c nhng tc ng m bo lng cng sut d
phng cho cc nh my in iu tncp 1 hoc ch nh nh my in khc trong h thng
lm nhim v iu tn cp I thay th.iu 31. Tt c cc nh my in khng lm nhim v
iu tn cp I u phi tham gia iu tn cp II (trtrng hp c quy nh ring).
Khi tn s h thng vt ra ngoi gii hn 50 0,5 Hz, cc nh my inlm nhim v
iu tn cp II u phi tham gia iu chnh theo kh nng ca t my a tn s h
thng vphm vi 50 0,5 Hz. Khi tn s h thng c a v gii hn trn, tt c cc
nh my in tham giaiu tn cp II gi nguyn cng sut v bo k s iu hnh h
thng in quc gia bit x liu 32. Trong trng hp thiu ngun in, sau khi k
s iu hnh h thng in quc gia huy nght cc ngun d phng trong h thng in
p ng nhu cu s dng in m tn s h thng in vntip tc gim di 49,5 Hz e da
mt n nh h thng in, k s iu hnh h thng in quc gia phithc hin hn ch
nhu cu s dng in m bo vn hnh n nh h thng in theo th t sau:1. Yu cu k
s iu hnh h thng in min hn ch ph ti vt biu .2. Trong trng hp c bit
do thiu ngun nghim trng dn n tn s tip tc gim thp di 49.5 Hz,k s iu
hnh h thng in quc gia c php p dng bin php sa thi ph ti theo "Lch sa
thi phti" gi n nh cho h thng in v a tn s ln 49,5 Hz.iu 33. Khi tn s
h thng gim thp mc di 49 Hz do s c ngun, bo v rle tn s thp (81) stc
ng ct ph ti a tn s ln hn 49 Hz, nhn vin vn hnh phi thng k, bo co
ngay v cpiu trc tip iu khin c k hoch cp in li.iu 34. N hng ph ti b
ct do vt biu , ct theo "Lch sa thi ph ti", ct do b t ng sa thi
phhttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...9
of 24 6/16/2009 2:07 PMti theo tn s thp (rle 81); hoc do tn hiu lin
ng ct nhanh ch c khi phc li khi c lnh caiu cp trn.iu 35. Khi tn s h
thng ln hn 50,5 Hz m khng c bin php iu chnh gim xung, k s iuhnh h
thng in quc gia c quyn ra lnh cho cc nh my in ngng d phng mt s t
my, dm lsau khi xt n an ton ca h thng, tnh kinh t, iu kin k thut v
kh nng huy ng li.Chng IIIHOT G X L S C H THG I QUC GIAiu 36. N guyn
tc x l s c h thng in quc gia1. Phi p dng bin php ph hp nhanh chng
loi tr s c v ngn nga s c lan rng;2. Phi nhanh chng khi phc vic cung
cp in cho khch hng, c bit l cc ph ti quan trng vm bo cht lng in nng
v tn s, in p;3. m bo s lm vic n nh ca h thng in;4. N m vng din bin
s c, tnh trng thit b c tch ra khi s c, phn tch cc hin tng s c,d on
thi gian khi phc;5. Lnh ch huy x l s c c truyn i bng li ni hoc bng
tn hiu iu khin;6. Lnh ch huy x l s c bng li ni phi do nhn vin vn
hnh cp trn truyn t trc tip ti nhnvin vn hnh cp di thng qua h thng
thng tin lin lc. Lnh phi chnh xc, ngn gn, r rng. N hnvin vn hnh ra
lnh phi chu trch nhim hon ton v lnh ca mnh trong qu trnh x l s c;7.
Trong thi gian thc hin x l s c, nghim cm s dng cc phng tin thng tin
lin lc phc v chhuy x l s c vo cc mc ch khc;8. Trong qu trnh x l s c
nhn vin vn hnh phi tun th cc quy nh ca quy trnh ny, cc quychuNn,
quy phm, quy trnh, quy nh chuyn ngnh, quy nh khc ca php lut v nhng
tiu chuNn anton do nh ch to quy nh.iu 37. Phn cp x l s c h thng in
quc gia1. mi n v iu , nh my in, trm in, mi thit b in phi c quy trnh
v x l s c cc thitb thuc phm vi qun l vn hnh.2. Phn chia trch nhim v
x l s c gia cc n v trong h thng in quc gia da trn quyn iukhin thit
b. Thit b thuc quyn iu khin cp iu no th cp c trch nhim ch huy x l
sc trn thit b .3. Trong khi x l s c, cc cp iu c quyn thay i ch lm
vic cc thit b thuc quyn iukhin trc v bo co sau cho cp iu c quyn kim
tra thit b ny. K s iu hnh h thng inmin c quyn iu khin cng sut pht
cc nh my in trong min khng thuc quyn iu khin khc phc s c, sau phi
bo ngay cp iu c quyn iu khin.4. Trong trng hp khNn cp khng th tr
hon c nh chy n hoc c nguy c e da n tnh mngcon ngi v an ton thit b
nh my in hoc trm in cho php trng ca, trng kp (hoc trcchnh) tin hnh
thao tc c lp phn t s c theo quy trnh x l s c trm in hoc nh my in
mhttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...10
of 24 6/16/2009 2:07 PMkhng phi xin php nhn vin vn hnh cp trn v phi
chu trch nhim v thao tc x l s c camnh. Sau khi x l xong phi bo co
ngay cho nhn vin vn hnh cp trn c quyn iu khin cc thitb ny.iu 38.
Khi xut hin s c, nhn vin vn hnh phi:1. Thc hin x l theo ng quy phm,
quy nh hin hnh.2. p dng mi bin php cn thit ngn nga s lan rng ca s c
v khi phc vic cung cp in chokhch hng trong thi gian ngn nht.3. Thc
hin x l nhanh vi tt c kh nng ca mnh.4. cc khu vc xy ra s c, phi bo
co kp thi, chnh xc hin tng v din bin s c cho nhn vinvn hnh cp trn
trc tip.5. nhng khu vc khng xy ra s c, nhn vin vn hnh phi thng xuyn
theo di nhng bin ngca s c qua thng s ca c s mnh, bo co cho nhn vin
vn hnh cp trn trc tip bit nhng hintng c bit, bt thng.6. Sau khi x l
xong, nhn vin vn hnh cp trn trc tip s thng bo tm tt tnh hnh cho nhn
vinvn hnh cp di c lin quan theo quy nh.iu 39. Khi s c trong ni b
phn t dng ca nh my in hay trm in, nhn vin vn hnh ca cs phi chu trch
nhim x l s c v bo co cho nhn vin vn hnh cp trn trc tip gip ngnnga s
c pht trin rng.iu 40. K s iu hnh h thng in, iu vin cn nm cc thng
tin chnh sau khi c s c:1. Tn my ct nhy, ng dy, trm in v s ln my ct
nhy.2. R le bo v v t ng tc ng, cc tn hiu cnh bo, ghi nhn s c trong
b ghi s c ca r le hoccc thit b chuyn dng khc.3. Tnh trng in p ng
dy.4. Tnh trng lm vic ca cc thit b khc ti nh my in, trm in.5. Thi
tit khu vc c xy ra s c v cc thng tin khc c lin quan.iu 41. N gay
sau khi c lp phn t b s c v khc phc tm thi tnh trng vn hnh khng bnh
thngtrong h thng in quc gia, che n v phi:1. p dng mi bin php cn
thit, nhanh chng khc phc s c, khim khuyt thit b a vo vnhnh.2. Tin
hnh iu tra nguyn nhn s c v ra cc bin php phng s c lp li.3. Lm bo co
gi v cp iu c quyn iu khin thit b b s c v cc n v qun l cp trn
theoquy nh.iu 42. Khng mun hn 24 gi sau s c, cp iu iu khin v cc n v
lin quan s thc hinthng bo nguyn nhn s c v d kin thi gian cp in tr
li. Hnh thc thng bo theo quy nh
tronghttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...11
of 24 6/16/2009 2:07 PMQuy trnh iu h thng in quc gia hoc quy nh v
hnh thc thng bo hin hnh ti khch hngs dng in.Chng IVQUA H CG TC TROG
X L S C H THG I QUC GIAiu 43. K s iu hnh h thng in quc gia l ngi ch
huy x l s c h thng in quc gia. N hnvin vn hnh cp di trc tip (theo
phn cp iu h thng in quc gia) phi chp hnh nghimchnh v khng chm tr cc
mnh lnh ca k s iu hnh h thng in quc gia. K s iu hnh hthng in quc
gia c quyn ngh lnh o trc tip n v qun l vn hnh thay th nhn vin vnhnh
di quyn khi c y l do cho thy h khng nng lc x l s c hoc vi phm nghim
trngquy trnh, quy phm, iu lnh vn hnh.iu 44. K s iu hnh h thng in
min l ngi ch huy x l s c h thng in min. N hn vinvn hnh cp di trc
tip (theo phn cp iu h thng in quc gia) phi chp hnh nghim chnh vkhng
chm tr cc mnh lnh ca k s iu hnh h thng in min. K s iu hnh h thng
inmin c quyn ngh lnh o trc tip n v qun l vn hnh thay th nhn vin vn
hnh diquyn khi c y l do cho thy h khng nng lc x l s c hoc vi phm
nghim trng quy trnh,quy phm, iu lnh vn hnh.iu 45. iu vin l ngi ch
huy x l s c h thng phn phi. N hn vin vn hnh cp di trctip (theo phn
cp iu h thng in quc gia) phi chp hnh nghim chnh v khng chm tr ccmnh
lnh ca iu vin. iu vin c th ngh lnh o trc tip n v qun l vn hnh
thayth nhn vin vn hnh di quyn khi c y l do cho thy h khng nng lc x
l s c hoc viphm nghim trng quy trnh, quy phm, iu lnh vn hnh.iu 46.
Quan h gia lnh o trc tip ca nhn vin vn hnh vi nhn vin vn hnh1. Lnh
o trc tip ca nhn vin vn hnh c quyn gip v ra lnh cho nhn vin vn hnh
diquyn mnh x l s c tt hn, nhanh chng hn, nhng lnh khng c tri vi lnh
ca nhn vinvn hnh cp trn v quy phm, quy trnh, quy nh hin hnh.2. Khi
lnh ca lnh o trc tip tri vi lnh ca nhn vin vn hnh cp trn th cc nhn
vin vn hnhcp di c quyn khng thi hnh v bo co li vi nhn vin vn hnh cp
trn tr trng hp nguy himn ngi hoc thit b.3. Khi c y l do cho thy nhn
vin vn hnh ca mnh khng kh nng x l s c th lnh otrc tip c th nh ch tm
thi cng tc nhn vin vn hnh trong ca , t mnh m nhim ly trchnhim x l s
c hoc ch nh ngi khc thay th, bo co cho nhn vin vn hnh cp trn bit.iu
47. Quan h gia lnh o trc tip cp iu quc gia vi k s iu hnh h thng in
quc gia1. K s iu hnh h thng in quc gia chu s ch huy ca lnh o trc
tip cp iu quc gia. Chc lnh o trc tip cp iu quc gia mi c thNm quyn
hy b quyn ch huy iu ca k s iuhnh h thng in quc gia.2. Khi s c xy
ra, lnh o trc tip cp iu quc gia c th gp cho k s iu hnh h thng inquc
gia x l s c tt hn. N hng kin ny ch c tnh cht tham kho, hng dn, k s
iu hnh hthng in quc gia phi chu hon ton trnh nhim v vic x l s c
trong ca ca mnh.3. Khi cn thit, lnh o trc tip cp iu quc gia c quyn
ra lnh trc tip cho k s iu hnh
hhttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...12
of 24 6/16/2009 2:07 PMthng in quc gia x l s c v phi chu trch nhim
v lnh ca mnh. Trng hp c y l do chothy k s iu hnh h thng in quc gia
khng kh nng x l s c th t mnh m nhn ly trchnhim x l s c hoc ch nh k
s iu hnh h thng in quc gia khc thay th.iu 48. Quan h gia lnh o trc
tip cp iu min v k s iu hnh h thng in min1. K s iu hnh h thng in min
chu s ch huy ca lnh o trc tip cp iu min. Ch c lnho trc tip cp iu
min mi c quyn hy b lnh ch huy iu ca k s iu hnh h thng inmin.2. Khi
s c xy ra, lnh o trc tip cp iu min c th gp cho k s iu hnh h thng
inmin x l s c tt hn. N hng kin ny ch c tnh cht tham kho, hng dn, k
s iu hnh hthng in min phi chu hon ton trch nhim v vic x l s c trong
ca ca mnh.3. Khi cn thit, lnh o trc tip cp iu min c quyn ra lnh trc
tip cho k s iu hnh hthng in min x l s c v phi chu trch nhim v lnh
ca mnh. Trng hp c y l do chothy k s iu hnh h thng din min khng kh
nng x l s c, lnh o trc tip cp iu min c th t mnh m nhn ly trch nhim
x l s c hoc ch nh k s iu hnh h thng inmin khc thay th.iu 49. Quan h
gia lnh o trc tip cng ty in lc hoc in lc tnh hoc thnh ph vi iu
vin1. iu vin chu s ch huy ca lnh o trc tip cng ty in lc hoc in lc
tnh, thnh ph. Ch clnh o trc tip cng ty in lc hoc in lc tnh, thnh ph
mi c quyn hy b lnh ch huy iu ca iu vin.2. Khi s c xy ra, lnh o trc
tip cng ty in lc hoc in lc tnh, thnh ph c th gp cho iu vin x l s c
tt hn. N hng kin ny ch c tnh cht tham kho, hng dn, iu vin phichu
hon ton trch nhim v vic x l s c trong ca ca mnh.3. Khi cn thit, lnh
o trc tip cng ty in lc hoc in lc tnh, thnh ph c quyn ra lnh trc
tipcho iu vin x l s c v phi chu trch nhim v lnh ca mnh. Trng hp c y
l do chothy iu vin khng kh nng x l s c th t mnh m nhn ly trch nhim
x l s c hoc chnh ngi khc thay th.iu 50. N ghim cm tt c nhng ngi
khng c nhim v vo phng iu khin khi nhn vin vn hnhang x l s c, tr lnh
o cp trn c trch nhim, lnh o trc tip ca n v. Khi cn thit nhnvin vn
hnh, lnh o trc tip ca n v c quyn yu cu cn b chuyn mn c lin quan trc
tipn vic x l s c n phng iu khin ca n v bn bc v x l s c.iu 51. Khi c
nhng s c h thng gy mt in nghim trng (mt in din rng, mt in khch
hngquan trng...) k s iu hnh h thng in, iu vin phi kp thi bo co ngay
s c cho lnh otrc tip ca n v mnh bit. Lnh o trc tip c trch nhim bo
co lnh o cp trn hoc cc n vc lin quan.Chng VX L S C G DY TR KHG CP I
P 500 KViu 52. Khi my ct thuc quyn iu khin ca k s iu hnh h thng in
quc gia nhy, nhn vinvn hnh ca c s phi ghi nhn v bo
co:http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...13
of 24 6/16/2009 2:07 PM1. Tn my ct nhy, s ln nhy.2. R le bo v tc
ng, b t ng lm vic, cc tn hiu ch th, cc bn ghi thng s s c ghi nhnc
trong cc r le c trang b hoc cc thit b chuyn dng khc.3. Tnh trng in
p ng dy.4. Tnh trng lm vic ca cc thit b khc ti c s5. Thi tit ti a
phng.iu 53. Khi c s c trn ng dy 500 kV1. N u h thng in quc gia khng
b chia ct, k s iu hnh h thng in quc gia iu chnh cngsut pht ca ngun
in, iu khin in p v ph ti thch hp trnh qu p, qu ti ng dy v thitb,
khi phc li ng dy 500 kV b s c theo quy nh t iu 54 n iu 58 Chng ny,
m bo hthng in quc gia vn hnh an ton, lin tc v n nh.2. N u dn n chia
ct h thng, k s iu hnh h thng in quc gia phi:a) Thc hin cc bin php
cn thit iu chnh in p, tn s n nh h thng in min;b) Thng bo cho k s iu
hnh h thng in min bit l h thng in min tch khi h thng inquc gia v c
th gi li quyn iu khin tn s h thng in min nu thy cn thit;c) Sau khi
h thng in min n nh, khi phc li ng dy 500 kV b s c theo quy nh t iu
54n iu 58 Chng ny lin kt cc h thng in min.iu 54. Khi ng dy 500 kV b
ngn mch mt pha1. N u t ng ng li mt pha thnh cng, k s iu hnh h thng
in quc gia phi thu thp thng tint cc trm in hai u ng dy b s c, kim
tra tnh trng ca my ct, thit b bo v v t ng,giao on ng dy c xc nh c s
c thong qua cho n v ch qun kim tra bng mt vi lu ng dy ang mang in,
im nghi ng s c v lm bo co s c theo quy nh.2. N u t ng ng li mt pha
khng lm vic, cho php ng li ng dy mt ln ngay sau khi kimtra s b cc
thit b v cc bo v tc ng xc nh im s c nm trn ng dy c bo v v khngc
thng tin bo thm v vic pht hin c s c h hng trn ng dy ca n v qun l vn
hnh.3. N u t ng ng li mt pha khng thnh cng, cho php ng li ng dy mt
ln sau khi xcnh:a) T ng ng li mt pha khng thnh cng l do knh truyn,
mch nh th hay r le bo v lm vickhng tin cy dn n thc t ng dy cha c ng
li (cha xut hin xung dng in, in p pha ct trc khi ct c ba pha...);b)
Hoc t ng ng li mt pha ng tt mt u nhng li b ct do lin ng t u kia.iu
55. Trong trng hp c bit, vic mt lin kt ng dy 500 kV c nh hng ln n
vic cungcp in n nh, lin tc n cc ph ti quan trng, khi xc nh t ng li
mt pha khng thnh cng(khng r nguyn nhn) hoc ng li mt ln bng lnh iu
th xin php lnh o cp iu qucgia cho php ng li ng dy mt ln na. Trc khi
ng li k s iu hnh h thng in quc
giahttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...14
of 24 6/16/2009 2:07 PMphi xem xt k mi iu kin v thit b v thi tit cc
trm in 500 kV, la chn u phng in li m bo vn hnh an ton cho cc h thng
in min.iu 56. Khng cho php ng li on ng dy nu xc nh c ngn mch hai
pha tr ln khi c haimch bo v tc ng, c ch th r rng ca cc thit b xc nh
v tr s c trn cng cc pha ging nhauv khong cch tng ng, chc nng ca t
ng ng li mt pha kha tt c cc my ct lin quan.Trong trng hp ny k s iu
hnh h thng in quc gia phi tch on ng dy ra lm bin phpan ton, giao
cho n v ch qun kim tra sa cha. Cn lu im c nghi ng s c.iu 57. Cc on
ng dy b ct bi lin ng t ni khc n cn c khi phc kp thi cp inli cho cc
ph ti v sn sng khi phc li h thng. Lu cn iu chnh in p trc khi thao
tc ngli ng dy 500 kV.iu 58. Trong vng 8 gi k t khi s c xy ra, nu ng
dy xut hin s c thong qua hai lnng li tt th khi xut hin s c ln th ba
(im s c gn vi hai ln s c trc), k s iu hnh hthng in quc gia xin php
Lnh o cp iu quc gia cho ng li ng dy ln th ba. Trc khing li ng dy, k
s iu hnh h thng in quc gia phi xem xt k mi iu kin v thit b vthi tit
cc trm in 500 kV, kha r le t ng li, la chn u phng in m bo vn hnh
anton cho cc h thng in min.iu 59. Trong trng hp khNn cp khi nhn c
tin bo tin cy khng th t hon c (c nguy c eda n tnh mng con ngi v an
ton thit b) trn ng dy hoc thy thng s vn hnh (dng in,in p, cng sut)
ng dy c dao ng mnh, c kh nng gy mt n nh h thng, cho php k siu hnh h
thng in quc gia tin hnh thao tc ct ng dy theo quy trnh v phi chu
trch nhimv thao tc x l s c ca mnh.iu 60. Sau khi cc n v sa cha xong
cc phn t b s c trn ng dy 500 kV, m bo tiuchuNn vn hnh v tr li cho
cp iu quc gia khi phc, k s iu hnh h thng in quc giacn c theo cc quy
nh ring cho tng ch vn hnh tin hnh thao tc a thit b, ng dy vovn
hnh.Chng VIX L S C G DY TRUY TI TR KHGCP I P TR 35 KV 220 KViu 61.
Khi my ct thuc quyn iu khin ca k s iu hnh h thng in min hoc iu
vinnhy, nhn vin vn hnh ca c s phi ghi nhn v bo co:1. Tn my ct nhy,
s ln nhy, tnh trng ca my ct.2. R le bo v no tc ng, b t ng no lm
vic, cc tn hiu no ch th, cc bn ghi thng s sc ghi nhn c trong cc r
le c trang b hoc cc thit b chuyn dng khc.3. Tnh trng in p ngoi ng
dy.4. Tnh trng lm vic ca cc thit b khc ti c s.5. Thi tit ti a
phng.iu 62. Khi s c ng dy thuc quyn iu khin, k s iu hnh h thng in
min hoc iu vin
phi:http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...15
of 24 6/16/2009 2:07 PM1. Thc hin cc bin php cn thit x l qu ti ng
dy hoc qu ti thit b theo thi gian chophp ca thit b v n nh h thng in
min.2. Sau khi h thng in min n nh, khi phc li ng dy b s c theo quy
nh t iu 63 n iu67 Quy trnh ny.iu 63. Khi s c ng dy c cp in p trn 35
kV n 220 kV, my ct u ng dy nhy, cphp ng in li ng y khng qu 2 ln, k
c ln t ng ng li khng thnh cng. i vi ccng dy i qua khu vc ng dn c,
vic ng li ng dy do B Cng nghip hoc cp c thNmquyn quy nh trn c s m
bo an ton cho ngi, thit b v vn hnh an ton, n nh ca h thngin.iu 64.
Khng c ng in ln ng dy trong trng hp my ct ng dy nhy khi c gi cp 6tr
ln, l lt dn n mc nc cao hn mc nc thit k ca ng dy e da mt an ton, ha
hon nhng vng ng dy i qua hoc cc thit b khng tiu chuNn vn hnh.iu 65.
Trong vng 8 gi k t khi s c xy ra, nu ng dy xut hin s c thong qua ba
ln ngli tt th khi xut hin s c ln th t k s iu hnh h thng in min (iu
vin) phi:1. Tm thi kha r le t ng li v ng li ng dy ln th t. N u ng
li tt ng dy, sau 8 gitip theo khng xut hin li s c th a r le t ng li
vo vn hnh.2. N u ng dy c phn on, tin hnh phn on ng li cc on ng dy
xc nh on sc v lm bin php an ton, giao cho n v ch qun kim tra sa
cha.u 66. i vi nhng ng dy trc c nhiu nhnh r, ng dy cung cp in cho
cc khu vc quacc my bin p trung gian, trc lc ng in ton tuyn ln th
nht phi ct ht cc my ct tng camy bin p nhnh r v iu chnh nc ca my bin
p c b iu chnh di ti v v tr thch hp. N ung in ton tuyn ln th nht
khng thnh cng th trc khi ng in ton tuyn ln th hai phi ctht cc dao
cch ly ni my bin p nhnh r trc tip vi ng dy.iu 67. i vi cc ng dy c
phn on, nu ng in ln th nht khng thnh cng, nhn vin vnhnh phi thc hin
phn on ng dy. Sau khi phn on, cho ng in ng dy t pha khng cnghi ng s
c trc. N u thnh cng cho khi phc li ph ti v lm bin php an ton giao
sa chaon ng dy cn li. N u khng thnh cng cho ng in on ng dy cn li.iu
68. i vi nhng ng dy b s c thong qua hoc do bo v tc ng sai, sau khi
ng li tt, ks iu hnh h thng in min (iu vin) cn c vo tnh hnh c th m
yu cu n v qun l kimtra ng dy bng mt thng hoc kim tra thit b nht th,
nh th ca trm in, khi kim tra phi lu vi n v qun l im nghi ng s c v
cc bin php an ton khi kim tra thit b ang mang in.iu 69. Trong trng
hp khNn cp khi nhn c tin bo tin cy khng th tr hon c (chy hoc cnguy
c e da n tnh mng con ngi v an ton thit b) trn ng dy, thng s vn hnh
(dng in,in p, cng sut) trn ng dy dao ng mnh c kh nng gy mt n nh h
thng hoc c lt dnn mc nc cao hn mc nc thit k ca ng dy e da mt an ton
th cho php k s iu hnhh thng in min (iu vin) tin hnh thao tc ct ng
dy theo quy trnh v phi chu trch nhimv thao tc x l s c ca mnh. Sau
khi x l xong phi bo co ngay cho nhn vin vn hnh cp trn.u 70. i vi
nhng ng dy b s c vnh cu, trc khi giao cho n v qun l ng dy i kimtra
sa cha phi yu cu cc nhn vin vn hnh nh my in v trm in kim tra s b
tnh hnh thitb ni vi ng dy trong phm vi hng ro trm in ca c s
mnh.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...16
of 24 6/16/2009 2:07 PMiu 71. Trc khi giao ng dy cho n v qun l i
kim tra sa cha phi lm y cc th tc vbin php an ton theo quy phm an
ton quy nh.Chng VIIX L S C G DY PH PHI TRKHG CP I P T 35 KV TR
XUGiu 72. Khi my ct thuc quyn iu khin ca iu vin nhy, nhn vin vn hnh
ca c s phi ghinhn v bo co:1. Tn my ct nhy, s ln nhy, tnh trng ca my
ct.2. R le bo v no tc ng, b t ng no lm vic, cc tn hiu no ch th, cc
bn ghi thng s sc ghi nhn c trong cc r le c trang b hoc cc thit b
chuyn dng khc.3. Tnh trng in p ng dy.4. Tnh trng lm vic ca cc thit
b khc ti c s.5. Thi tit ti a phng.iu 73. Khi s c ng dy phn phi, my
ct ng dy nhy, c php ng in li ng dykhng qu 3 ln, k c ln t ng ng li
khng thnh cng. i vi cc ng dy i qua khu vc dnc, cc cng ty in lc, in
lc tnh, thnh ph cn c vo tnh hnh thc t c quy nh ring trn c sm bo an
ton cho ngi, thit b v gim thiu thi gian mt in.iu 74. Khng c ng in
ln ng dy phn phi trong trng hp my ct ng dy nhy khi cgi cp 6 tr ln,
lt ln e da mt an ton, ha hon nhng vng ng dy i qua hoc cc thit bkhng
tiu chuNn vn hnh.iu 75. Trong trng hp khNn cp khi nhn c tin bo tin
cy khng th tr hon c (chy hoc cnguy c e da n tnh mng con ngi v an
ton thit b) trn ng dy hoc c lt dn n mc nccao hn mc nc thit k ca ng
dy e da mt an ton th cho php iu vin tin hnh thao tcct ng dy theo
quy trnh v phi chu trch nhim v thao tc x l s c ca mnh. Sau khi x l
xongphi bo co ngay cho k s iu hnh h thng in min i vi nhng ng dy hoc
thit b thucquyn kim tra ca k s iu hnh h thng in min.iu 76. i vi cc
ng dy c phn on, nu ng in ln th nht khng thnh cng, nhn vinvn hnh
phi:1. Tin hnh phn on (ti im c quy nh c th), khoanh vng pht hin v c
lp on ngdy b s c, nhanh chng cp in li cho khch hng.2. Da vo tn hiu
r le bo v, dng ngn mch (nu c) phn on.3. Thc hin cc bin php an ton
giao on ng dy b s c vnh cu cho n v qun l kim tra, sacha.iu 77. i vi
li in c im trung tnh cch in hoc ni t qua cun dp h
quang:http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...17
of 24 6/16/2009 2:07 PM1. Phi tin hnh thc hin cc bin php x l khi
dng chm t ln hn 7A.2. Khi xut hin s c chm t phi tin hnh ngay cc bin
php cn thit c lp im chm t.iu 78. Mt s bin php c bn xc nh v c lp im
chm t i vi li in c im trung tnhcch in hoc ni t qua cun dp h
quang:1. Cn c vo cc thng s ghi nhn c khi xut hin s ca) Xc nh phn t
b s c;b) Tin hnh phn on, c lp phn t chm t x l.2. Trng hp khng xc nh
c ngay phn t b s c thc hin ln lt cc bc sau xc nh:a) Kim tra cc phn
t thuc thanh ci v t thanh ci n hng ro trm in;b) Phn tch li c im chm
t ra thnh cc vng kim tra;c) Ln lt thao tc tch tng phn t trong vng c
im chm t theo nguyn tc tch phn t t quantrng trc n khi pht hin c phn
t b s c;d) Sau khi xc nh c phn t b s c phi tin hnh phn on, c lp phn
t chm t x l.Chng VIIIX L S C G CPiu 79. Khi my ct ca ng cp nhy, nhn
vin vn hnh ca c s phi ghi nhn v bo co iu cp trn trc tip:1. Tn my ct
nhy, s ln nhy, tnh trng ca my ct.2. R le bo v no tc ng, b t ng no
lm vic, cc tn hiu no ch th, ghi nhn s c trong chcnng ghi s c ca cc
r le c trang b hoc cc thit b chuyn dng khc.3. Cc thng s lin quan n
cp nu c (p lc du hoc kh...).4. Tnh trng lm vic ca cc thit b khc lin
quan ti c s.iu 80. ng in li ng cp sau khi nhy s c1. Khi my ct ca ng
cp nhy do bo v r le tc ng, khng cho php ng li ng cp ny. Cpiu iu
khin phi giao cho n v qun l vn hnh ng cp tin hnh th nghim kim tra
cchin ca ng cp ny. Ch sau khi n v qun l xc nhn ng cp tiu chuNn vn
hnh hocng cp nhy l do bo v r le tc ng nhm, Cp iu iu khin mi c php
ng li ngcp ny.2. i vi trng hp ng cp ch l on ngn ca ng dy trn khng,
nu khng c quy nh ringth chi cho php ng li mt ln (k c ln t ng ng
li). N u ng li khng thnh cng, nhn vinvn hnh phi tin hnh phn on (nu
c phn on) ng li ng dy khng theo quy nh v thchin th nghim kim tra
cch in on cp ca ng dy
ny.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...18
of 24 6/16/2009 2:07 PMiu 81. Trong trng hp s c, i vi ng cp c cp in
p < 35kV c th cho php vn hnh quti, thi gian v dng qu ti cho php
ph thuc vo ti ca ng cp ny trc theo quy nh ca nhch to hoc quy nh
ring ca n v qun l. i vi ng cp c cp in p 35 kV khng cho phpvn hnh qu
ti nu khng c quy nh v thi gian cho php qu ti ca nh ch to.iu 82.
Trong trng hp li in c trung tnh cch in, cho php ng cp lm vic trong
tnh trngmt pha chm t cho n khi khc phc c im chm t. Khi pht hin c mt
pha chm t, n vqun l vn hnh phi lp tc tm v sa cha h hng trong thi
gian ngn nht. li in u ni trctip vi my pht in, nu khng c quy nh
ring, ch vn hnh mt im chm t ch cho php kodi khng qu 2 gi. i vi li
in c dng in mt pha chm t ln hn 5A th thi gian cho php scn c vo iu
kin c th x l.Chng IXX L S C MY BI P V KHG Iiu 83. N u khng c quy nh
ring theo yu cu ca nh ch to, cc my bin p vi mi dng lmmt, khng ph
thuc thi gian v tr s ca dng in trc khi s c, khng ph thuc nhit
mitrng lm mt, khi s c u c php qu ti ngn hn cao hn dng in nh mc theo
cc gii hnsau y:i vi cc my bin p du:Qu ti theo dng in (%) 30 45 60
75 100Thi gian qu ti (pht) 120 80 45 20 10i vi cc my bin p kh:Qu ti
theo dng in (%) 20 30 40 50 60Thi gian qu ti (pht) 60 45 32 18 5Cc
my bin p u c php qu ti 40% so vi dng in nh mc nhiu ln nu tng s thi
gian quti mc trn khng qu 6 gi mt ngy m trong 5 ngy lin tip vi iu
kin h s ph ti ban ukhng qu 0,93. Khi phi tn dng ht kh nng mi trang
b lm mt ca my bin p v thng xuynkim tra nhit du v cun dy ca my bin
p.iu 84. Trong vn hnh, nu my bin p (hoc khng in) c nhng hin tng khc
thng nh chydu, thiu du, b nng qu mc, c ting ku khc thng, pht nng cc
b u ct s, b iu p diti hot ng khng bnh thng... phi tm mi bin php gii
quyt, ng thi bo co vi iu cptrn, lnh o trc tip v ghi vo s nht k vn
hnh.iu 85. My bin p (hoc khng in) phi c tch ra khi vn hnh trong cc
trng hp sau:1. C ting ku mnh khng u v ting phng in trong my bin p
(hoc khng in).2. S pht nng ca my tng ln bt thng v lin tc trong iu
kin lm mt bnh thng, dng innh
mc.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...19
of 24 6/16/2009 2:07 PM3. Du trn ra ngoi my qua bnh du ph, v knh
phng n hoc du phun ra qua van an ton.4. Mc du h thp di mc quy nh v
cn tip tc h thp.5. Mu sc ca du thay i t ngt.6. Cc s b rn, v, b phng
in b mt, p lc du ca cc s kiu kn khng nm trong quy nh canh ch to, u
ct b nng .7. Khi kt qu phn tch du cho thy du khng t cc tiu chuNn,
hoc khi chp chy gim qu sc sovi ln th nghim trc.iu 86. Trng hp my
bin p (hoc khng in) b ct t ng do bo v khc ngoi so lch, hi, plc du c
th ng my bin p (hoc khng in) tr li lm vic sau khi kim tra s b tnh
trng bnngoi khng pht hin c du hiu bt thng.iu 87. Khi r le hi tc ng
bo tn hiu phi tin hnh xem xt bn ngoi my bin p (hoc khngin), ly mu
kh trong r le phn tch v kim tra tnh cht chy ca kh:1. N u kh chy c
hoc trong kh c cha nhng sn phNm do phn hy cht cch in phi nhanhchng
tch my bin p (hoc khng in).2. Trng hp cht kh khng mu, khng mi, khng
t chy c th vn c th my bin p (hockhng in) tip tc vn hnh v phi tng
cng kim tra gim st tnh trng my bin p (hoc khngin).iu 88. Trng hp my
bin p (hoc khng in) b ct t ng do tc ng ca bo v ni b my binp (hoc
khng in) nh bo v so lch, hi, dng du, p lc du:1. Trng hp c hai bo v
trn tc ng: giao my bin p (hoc khng in) cho n v qun l tin hnhcc th
nghim cn thit, ch cho php a my bin p (hoc khng in) vo lm vic tr li
sau khi thnghim, kim tra th nghim cc thng s, phn tch mu kh, mu du v
khc phc nhng nhc im btthng pht hin.2. Trng hp ch c mt bo v tc ng:
giao my bin p (hoc khng in) cho n v qun l tin hnhth nghim kim tra
mch bo v ni b my bin p (hoc khng in). N u qua kim tra pht hin bo
vni b ca my bin p (hoc khng in) tc ng l do h hng trong mch bo v v h
hng ckhc phc, cho php a my bin p (hoc khng in) vo vn hnh tr li. N u
kim tra mch bo vni b khng phi hin h hng, n v qun l phi tin hnh cc
th nghim cn thit quy nh ti khon 1ca iu ny.Trc khi a my bin p (hoc
khng in) vo vn hnh tr li phi c kin bo m iu kin vnhnh ca gim c hoc
ph gim c k thut (hoc ngi c gim c y quyn) ca n v qun lthit b.iu 89.
Trng hp c bit, nu vic ngng vn hnh my bin p dn n vic ngng cp in mt
khuvc ln v my bin p ch b ct bi mt trong cc bo v ni b ca my bin p v
khng thy c duhiu bn ngoi chng t my bin p h hng, c s ng ca gim c hoc
ph gim c k thut(hoc ngi c gim c y quyn) ca n v qun l thit b, cho
php dng my ct ng li my binp mt
ln.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...20
of 24 6/16/2009 2:07 PMChng XX L S C MY PHT I,MY B G B V CC THIT BN
KHCiu 90. My pht in v my b ng b khng c php qu ti lu di vi dng in
cao hn tr scho php ng vi nhit v p lc quy nh ca mi trng lm mt.1.
Trong nhng iu kin s c, my pht in v my b ng b c php qu ti ngn hn dng
instator v rotor theo ng quy nh ca nh ch to. N u khng c ti liu ca
nh ch to, lc h thng inb s c my pht in v my b ng b c php qu ti ngn
hn theo dng in stator vi bi s quyi v tr s nh mc ca dng in stator
theo Bng 1.Thi gian qu tipht, khng quBi s qu ti ca my pht in v my b
ng bCun dy stator c lm mtgin tipCun dy stator c lm mt trc tipBng nc
Bng hydro60 1,10 1,10 -15 1,15 1,15 -10 - - 1,10(*)6 1,20 1,20
1,155 1,25 1,25 -4 1,30 1,30 1,203 1,40 1,35 1,252 1,50 1,40 1,301
2,00 1,50 1,50Ghi ch: (*) Khi p sut ca hydro khng vt qu p sut nh mc
O,5at.2. Tr s qu ti ca dng in rotor my pht in v my b ng b c cc cun
dy c lm mt gintip cng c xc nh nh Bng 1.3. Tr s qu ti ca dng in
rotor my pht in v my b ng b c cc cun dy c lm mt trctip bng hydro xc
nh theo Bng 2.Bi s dng in qu ti vt dngin nh mc1,05 1,10 1,15 1,20
1,50 2,00Thi gian qu ti cho php (pht) 60 10 6 4 1 0,3iu 91. N u ngn
mch ngoi ng dy hoc thanh ci lm cc bo v d phng s c bn ngoi tcng ct
my pht in th sau khi kim tra s b cho php ha li my sau khi gii tr s
c.iu 92. Khi cc bo v ni b ca my pht in v my b ng b (bo v so lch, bo
v chm tstator hoc rotor) tc
nghttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...21
of 24 6/16/2009 2:07 PM1. Phi kim tra li tnh trng cch in ca my. N u
khng pht hin c hin tng g khc thng chophp a my pht in, my b ng b vo
vn hnh.2. Trng hp qua kim tra pht hin bo v ni b ca my pht in, my b
ng b tc ng l do sc ni b mch bo v v s c c khc phc, cho php a my pht
in, my b vo vn hnh.3. Trc khi a my pht in, my b ng b vo vn hnh phi
c kin m bo tiu chuNn vnhnh ca gim c c s qun l (hoc ngi c gim c y
quyn) c th a my vo vn hnh.iu 93. Khi cun dy rotor ca my pht in hay
my b ng b b chm t, phi xc nh ngay tnhcht v tnh trng h hng. Trng hp
chm t hon ton v chc chn, tt nht l a my ra sacha.1. i vi my pht nhit
in (rotor cc Nn), phi a b bo v hai im chm t trong mch kch thchvo lm
vic tc ng ct my khi c im th hai chm t.2. i vi my pht thy in (rotor
cc li) hay my b ng b, thng thng khng cho php lm vickhi c im chm t
trong mch kch thch. Bo v khi chm t mt im trong mch kch thch s tcng
ct my.iu 94. Khi bo v chm t stator pht tn hiu th cho gim ti my pht
v ngng my kim tra, trnghp cn thit c th cho php tip tc lm vic nhng
ti a khng qu 2 gi. N u dng in dung trn sath phi cho mch bo v chm t
mt pha tc ng ct my.iu 95. Cho php my pht in v my b ng b lm vic lu
di khi chnh lch dng in trongcc pha:1. Khng vt qu 10% dng in nh mc i
vi my pht nhit in.2. Khng vt qu 20% dng in nh mc i vi my pht in
diesel, my b ng b.3. i vi my pht thy in vi h thng lm mt gin tip bng
khng kh cho cun dy stator, cho phpdng in gia cc pha lch nhau ti 20%
my c cng sut 125 MVA tr xung v 15% vi my ccng sut 125 MVA tr ln.4.
i vi my pht thy in vi cun dy stator dc lm mt trc tip bng nc, cho
php lm vic vich chnh lch dng in gia cc pha l 10%.5. Trong mi trng
hp dng in ca bt k pha no cng khng c ln hn dng in nh mc.iu 96. My
pht in nhit in c php lm vic ngn hn ch khng ng b khng c kchthch vi
ti c gim bt.1. i vi my pht nhit in c cun dy c lm mt gin tip c php
lm vic ch phi ngb (mt kch thch) trong vng 30 pht vi cng sut khng qu
60% cng sut nh mc.2. i vi my pht nhit in c cun dy c lm mt trc tip,
cng sut cho php v thi gian lmvic ch khng ng b khng c kch thch c quy
nh trn c s nhng th nghim c bit hoctheo ti liu ca nh ch to.3. My pht
thy in hoc my pht c rotor ai qun bng dy v rotor rng ghp, khng c php
lmvic ch phi ng b. Cc nh my in phi tin hnh th nghim xc nh thi gian
v cng
suthttp://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...22
of 24 6/16/2009 2:07 PMcho php vn hnh ch phi ng b c th cho tng my v
quy nh trong quy trnh ca nh myin.iu 97. My pht in c th c php lm vic
ch ng c lu di nu khng b hn ch bi iukin lm vic ca tua bin v quy nh
ca nh ch to tua bin.iu 98. Cc thit b in khc (t b ngang, t b dc, my
bin p iu chnh, my bin in p, mybin dng in, chng st van...) thc hin
theo quy trnh vn hnh ca nh ch to thit b v ca n vqun l vn hnh.Chng
XIX L S C MT I TO TRM I, H MY Iiu 99. Khi xy ra mt in ton trm in,
nhn vin vn hnh trm in phi:1. Thc hin x l s c theo quy trnh x l s c
ring ca n v.2. Tin hnh ct ton b cc my ct trong trm in. Cc trng hp c
bit do cc yu cu v k thutkhng th ct ton b cc my ct phi c quy nh ring
ph hp.3. Kim tra tnh trng cc thit b trong trm in.4. Bo co ngay v cp
iu c quyn iu khin trng thi ca cc MC.5. m bo cc thit b iu kin vn hnh
sn sng nhn in li.6. ngh cp iu c quyn iu khin tin hnh thao tc c lp
thit b b s c (nu c).iu 100. Khi xy ra mt in ton nh my in, Trng ca
nh my in phi:1. Thc hin x l s c theo quy trnh x l s c ring ca n
v.2. Tin hnh ct ton b my ct trong trm in ca nh my in. Trong trng hp
c bit do yu cuv k thut khng th ct ton b my ct phi c quy nh ring cho
ph hp.3. Kim tra tnh trng cc thit b trong trm in, tnh trng cc t my
pht in.4. Bo co ngay v cp iu c quyn iu khin trng thi ca cc my ct;
tnh trng cc t my phtin.5. m bo cc thit b iu kin vn hnh sn sng nhn
in li; cc t my khng b s c sn sngha in li.6. ngh cp iu c quyn iu
khin thao tc c lp thit b s c (nu c).7. ngh cp iu c quyn iu khin phi
hp nhanh chng khi phc li t dng nh my in.iu 101. Khi xy ra mt in ton
trm in hoc nh my in, nhn vin vn hnh ti cp iu iukhin phi:1. Thc hin
x l s c mt in ton trm in hoc nh my in theo quy trnh x l s c do n
vban hnh, thc hin cc bin php iu khin ph hp ngn chn s c m
rng.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...23
of 24 6/16/2009 2:07 PM B TRG( k) Hong Trung Hi2. Phn tch s c, xc
nh nguyn nhn gy s c mt in ton trm in hoc nh my in.3. Ch huy thao tc
c lp phn t gy s c mt in ton trm in hoc nh my in, khi phc li tonb
trm in hoc nh my in b nh hng bi s c.4. Lm bo co gi v cp iu c quyn
kim tra thit b b s c v cc n v qun l cp trn theoquy
nh./.http://vbqppl4.moj.gov.vn/law/vi/2001_to_2010/2007/200703/2007031...24
of 24 6/16/2009 2:07 PM
