越南计量规程.doc

6B CNG NGHIPCNG HO X HI CH NGHA VIT NAMc lp - T do - Hnh phcQUY NHYu cu k thut trang thit b o m in nng i vi cc nh my in(Ban hnh km theo Quyt nh s 02 /2007/Q-BCNngy 09 thng 01 nm 2007 ca B trng B Cng nghip)Chng IQUY NH CHUNG iu 1. Phm vi v i tng p dng1. Quy nh ny quy nh cc nguyn tc v thit lp h thng o m in nng v cc yu cu k thut trang thit b o m in nng phc v mua bn in ca cc nh my in.2. Quy nh ny p dng i vi cc nh my in u ni vo h thng in quc gia v cc n v qun l li in ni c im u ni ca nh my in vo h thng in quc gia.3. Cc nh my in BOT k hp ng mua bn in di hn; cc nh my thu in nh v siu nh c quy nh ti Quyt nh 2394/Q-BCN ngy 01 thng 9 nm 2006 ca B trng B Cng nghip u nivoli in c cp inp di 110 kV khng thuc phm vi iu chnh ca quy nh ny.iu 2. Gii thch t ngTrong quy nh ny, cc thut ng di y c hiu nh sau:1. im u ni: im ni trang thit b, li in v nh my in ca n v pht in vo h thng in quc gia.2. V tr o m: V tr vt l trn mch in nht th, ti in nng c o m v xc nh.3. o m in nng: Qu trnh xc nh in nng qua v tr o m.4. i lng o m mua bn in: Cc i lng vt l c o m s dng trong mua bn in.5. Bin dng in (CT): Thit b bin i dng in, m rng phm vi o dng in v in nng cho h thng o m.6. Bin in p (VT): Thit b bin i in p, m rng phm vi o in p v in nng cho h thng o m.7. Cng t o m in nng: Thit b o in nng thc hin tch phn cng sut theo thi gian, lu v hin th gi tr in nng o m c.8. Mch o m: Mch in lin kt cc thit b bin i, o lng thc hin chc nng o m in nng. 9. H thng o m: Bao gm cc thit b o v mch in c tch hp thnh h thng hon chnh c chc nng o m in nng qua im o m.10. Hng kp: V tr u dy nh th c lp t ti t in trung gian, t iu khin, t o m.11. Hp u dy: V tr u dy ca cng t o m in nng, bin in p, bin dng in v cc thit b khc c np y nim phong, kp ch.12. n v qun l li in: Cc n v qun l ton b hoc mt phn li in truyn ti hoc li phn phi thuc h thng in quc gia.13. Tiu chun IEC: B tiu chun v k thut in do U ban k thut in quc t ban hnh.14. Nh my in BOT: Cc nh my in c u t theo hnh thc Xy dng - Kinh doanh - Chuyn giao.Chng IINGUYN TC THIT LP H THNG O M V XC NHV TR O M IN NNG PHC V MUA BN INiu 3. H thng o m in nng 1. Ti mi im u ni phi b tr h thng o m chnh v cc h thng o m d phng.2. H thng o m chnh phi xc nh chnh xc, y cc i lng o m mua bn in lm cn c chnh thanh ton in nng qua im u ni v loi tr c cc yu t nh hng n kt qu o m bi kt cu mch vng ca h thng in.3. H thng o m d phng c chc nng:a) Thay th cho h thng o m chnh, lm c s tnh ton cc i lng mua bn in trong trng hp h thng o m chnh hot ng khng chnh xc hoc b s c.b) Gim st, kim tra kt qu o m ca h thng o m chnh trong iu kin h thng o m chnh lm vic bnh thng.iu 4. V tr o m in nng 1. Nguyn tc chung:a) V tr o m c xc nh trn c s trng hoc lin k vi im u ni.b) Trng hp khng iu kin b tr h thng o m ti v tr o m trng hoc lin k vi im u ni, nh my in v n v qun l li in tha thun v tr o m in nng thay th. Nh my in c trch nhim u t h thng o m ti v tr o m thay th v thng nht vi n v qun l li in xc nh s tng quan v in nng, xc nh tn tht trn my bin p v ng dy lin h gia v tr o m thay th vi im u ni trong qu trnh vn hnh qui i in nng t v tr o m thay th v im u ni trong qu trnh mua bn in v thanh ton.c) Trng hp v tr o m khng m bo o m chnh xc in nng mua bn, nh my in v n v qun l li in tha thun phng php tnh ton in nng quy i v im u ni.2. Trng hp c th:a) im u ni thuc nh my in:- V tr o m chnh c xc nh ti my ct tng hoc u cc cc pha cao, trung p ca my bin p nng p v pha cao p ca my bin p t dng d phng nhn in ca im u ni, tr trng hp c tho thun khc.- V tr o m d phng 1 c xc nh ti cc xut tuyn l ng dy ca nh my in, tr trng hp c tho thun khc.- V tr o m d phng 2 c xc nh theo tha thun gia cc bn mua bn in.b) im u ni khng thuc nh my in:- Trng hp nh my in c mt ng dy lin h vi im u ni v khng c in nng i vng qua thanh ci ca nh my in th v tr o m chnh v d phng 1 trng hoc lin k vi im u ni.- V tr o m d phng 2 c xc nh theo tha thun gia cc bn mua bn in.- Trng hp nh my c t 2 ng dy tr ln v c in nng vng qua thanh ci nh my in th v tr o m c chn theo qui nh ti im a khon 2 ca iu ny.Chng IIIYU CU K THUT CA H THNG O M IN NNGPHC V MUA BN INiu 5. Cu hnh ti thiu ca h thng o m in nngCu hnh ti thiu ca h thng o m in nng bao gm:1. Bin dng in (CT).2. Bin in p (VT).3. Cng t o m in nng.4. Mch in v cp nh th.5. Thit b phc v thu thp s liu o m v ng truyn d liu.6. Thit b bo v an ton, v tr nim phong, kp ch.7. Thit b ph tr, thit b chuyn i u ni, thit b c lp mch o phc v th nghim.8. Trng hp c bit c th bao gm cc thit b logic phc v chuyn in p VT, thit b kim tra in p v dng in.iu 6. Yu cu k thut ca cng t o m in nng1. Yu cu chung:Cng t o m in nng phi m bo cc tnh nng sau y:a) Cng t o m in nng phi l loi 3 pha 4 dy.b) Cng t o m in nng kiu in t hp chun, c th lp trnh c.c) C nhiu biu gi.d) o m in nng tc dng v phn khng theo hai chiu nhn v pht ring bit.) o m in nng phn khng theo 4 gc phn t.e) C chc nng o cng sut cc i, ghi biu ph ti.g) C tnh nng kt ni vi my tnh, thu thp v c s liu ti ch v t xa.h) Cng t o m in nng phi c cp ngun t h thng in p th cp o lng v phi m bo duy tr hot ng khi mt in p 1 hoc 2 pha bt k.i) C kh nng bo mt bng nhiu mc mt khu.k) Cng t o m in nng phi c cc v tr nim phong, kp ch m bo sau khi tin hnh nim phong kp ch cng t th khng th tip cn vi cc u cc u dy v thay i cc thng s ci t trong cng t nu khng ph b ch nim phong.2. Cp chnh xc:a) Cng t o m chnh phi t cp chnh xc 0,2 vi in nng tc dng theo tiu chun IEC 62053-22 v 2,0 vi in nng phn khng theo tiu chun IEC 62053-23 hoc cc tiu chun khc tng ng.b) Cng t o m d phng phi t cp chnh xc 0,5 vi in nng tc dng theo tiu chun IEC 62053-22 v 2,0 vi in nng phn khng theo tiu chun IEC 62053-23 hoc cc tiu chun khc tng ng.iu 7. Yu cu k thut ca bin dng in s dng cho mc ch o m in nng1. Yu cu chung:a) Bin dng in phi c cun dy th cp o lng dng ring cho cc thit b o lng v cng t o m in nng.b) Gi tr dng in th cp danh nh ca bin dng in o lng l 1A hoc 5A.c) Bin dng in phi c v tr nim phong kp ch ti np hp u dy cun th cp o lng cp cho cc thit b o lng v cng t o m in nng m bo sau khi tin hnh nim phong kp ch th khng th tc ng vo mch in u ni nu khng ph b nim phong.2. Cp chnh xc:a) Bin dng in phc v o m chnh phi t cp chnh xc 0,2 theo tiu chun IEC 60044-1 hoc cc tiu chun khc tng ng.b) Bin dng in phc v o m d phng phi t cp chnh xc 0,5 theo tiu chun IEC 60044-1 hoc cc tiu chun khc tng ng.iu 8. Yu cu k thut ca bin in p s dng cho mc ch o m in nng1. Yu cu chung:a) Bin in p phi c cun dy th cp o lng dng ring cho cc thit b o lng v cng t o m in nng.b) Gi tr in p th cp danh nh ca bin in p o lng l 100V hoc 110V.c) Bin in p phi c v tr nim phong ti np hp u dy cun th cp o lng cp cho cc thit b o lng v cng t o m in nng m bo sau khi tin hnh nim phong kp ch th khng th tc ng vo mch in u ni nu khng ph b nim phong.2. Cp chnh xc:a) Bin in p phc v o m chnh phi t cp chnh xc 0,2 theo tiu chun IEC 60044-2 i vi bin in p kiu cm ng, tiu chun IEC 60044-5 i vi bin in p kiu t hoc cc tiu chun khc tng ng.b) Bin in p phc v o m d phng phi t cp chnh xc 0,5 theo tiu chun IEC 60044-2 i vi bin in p kiu cm ng, tiu chun IEC 60044-5 i vi bin in p kiu t hoc cc tiu chun khc tng ng.iu 9. Yu cu k thut ca mch o m1. Trong mi trng hp, cun th cp ca CT, VT v cp nh th ni vi cng t o m in nng ca h thng o m chnh khng c s dng cho bt k mc ch no khc v phi hon ton c lp vi h thng o m d phng.2. Cp nh th ca mch o m phi c i theo ng ngn nht, s lng im ni qua hng kp l t nht v phi c iu kin thc hin bin php nim phong, kp ch t hng kp hoc im ni. Cp nh th ca h thng o m chnh phi i ring v ni trc tip t t u vo CT, VT n t cng t m khng qua hng kp ti t trung gian.3. i vi h thng o m in nng ly in p t VT thanh ci v c nhiu hn mt VT thanh ci, phi m bo iu kin thc hin nim phong kp ch u u dy kho chuyn in p nh th v cng t o m in nng phi c lp trnh ghi li thi im v khong thi gian chuyn mch in p.4. Ph ti mch th cp CT, VT k c cng t o m in nng khng c vt qu ph ti danh nh ghi nhn CT, VT.5. Trng hp mch dng in ca h thng o m d phng s dng chung vi cc thit b o lng khc, phi m bo khng lm nh hng ti chnh xc ca h thng o m v iu kin thc hin nim phong kp ch ton b mch o, thit b o lng, cng t o m in nng.6. Cc hp ni th nghim (test block) phi c lp t phc v cho vic kim nh thit b o m v iu kin nim phong, kp ch.iu 10. Yu cu k thut ca h thng thu thp v c s liu cng t o m in nng1. Cc cng t o m in nng phc v mua bn in phi c lp t h thng c s liu cng t t xa ph hp v kt ni v giao thc vi phn mm thu thp s liu t xa trin khai ti trung tm thu thp s liu.2. Cc cng t phc v mua bn in phi c cng thng tin, tch hp thit b truyn tin theo chun RS232 (hoc RS485, Ethernet) v Modem trong cng t cho php thc hin kt ni t xa vi cng t qua Modem v ng truyn d liu.3. Ty thuc vo m hnh thu thp thng tin, phng thc truyn s liu o m ti mt im u ni c tha thun gia cc bn mua bn in. H thng thu thp s liu phi bao gm my tnh ti ch c v lu tr s liu hoc thng qua b thu thp s liu tp trung. S liu o m c thu thp v my tnh ti ch phi c truyn v c s d liu ca my tnh ch t ti trung tm thu thp s liu.4. Mi trng truyn thng tin c th s dng mng in thoi cng cng, mng in thoi dng ring, mng my tnh (WAN, Internet), phng thc truyn tin hu tuyn (cp ng, cp quang, ti ba.), v tuyn (vi ba, CDMA.). Mi trng v phng thc truyn tin phi c bo mt chng xm nhp tri php.5. Thit b thng tin ghp ni vi cng t o m in nng phi c lp t thit b chng st thch hp trnh nh hng ca xung st lan truyn qua mng thng tin gy h hng cho cng t.6. Thit b chuyn i v cch ly, thit b kt ni vi mng thng tin vin thng cng cng (PSTN), thit b kim