H s thit b dy ngh

CNG HA X HI CH NGHA VIT NAM

c lp T do Hnh phc

H S THIT BTHAM D HI THI THIT B DY NGH T LMTNH QUNG NAM LN TH IV NM 2013 Tn thit b : HP B TH NGHIM R LE

A CHC NNG - AN700 Nhm ngh o to : in Cng Nghip Tc gi : L Duy Nhn, Phm Vn Hi, Nguyn Lc An n v : Trng Cao ng in lc Min Trung

Qung Nam 2013I. MC CH V TNG THIT K1. Mc ch thit k:

Th nghim bo v r le ng mt vai tr rt quan trng trong nh gi kh nng lm vic ca cc bo v r le trong h thng in. Nguyn tc chung ca th nghim l a vo r le cc i lng dng in, in p, tn s v gc pha theo cc mc tiu th nghim. Cc mc tiu y ty thuc vo tng loi bo v v kh nng pht hin s c ca chng.

Cc hp b th nghim r le s dng bin p iu chnh gp mt s bt li khi thc hin cc th nghim c lin quan n tn s, gc pha c bit l cc th nghim c lin quan n sng hi, th nghim t xa...Xut pht t cc vn nu trn, hp b th nghim r le k thut s c nghin cu ch to v a vo thc t sn xut. in hnh ca loi thit b ny l hp b th nghim r le CMC256 ca hng Omicron(Cng ha o). Tuy vy thit b ny c gi thnh rt cao (hn 2 t ng). to thun li cho cng tc dy hc thc hnh cng nh l thuyt ca mn hc Bo v r le, nhm tc gi nghin cu ch to Hp b th nghim r le a chc nng AN700 vi cc linh kin, thit b c sn trong nc. Thit b ch cn s dng ngun in mt pha nhng c th to ra ba knh in p v 6 knh dng in, cc thng s k thut ca tng knh c th iu chnh c lp v bin , tn s, in p v gc pha. Ngoi ra thit b cn c tch hp bn phm iu khin v mn hnh hin th LCD gip cho vic dy hc c thun li hn.2. tng thit k:Thit k ch to Hp b th nghim rle a chc nng c th tin hnh cc th nghim nh sau:

Th nghim cc loi bo v r le qu dng in; Th nghim cc loi bo v r le qu p, km p; Th nghim bo v tn s; Th nghim bo v c hng; Th nghim bo v khong cch; Th nghim bo v so lch; Kim tra th nghim cng t; Th nghim my bin p o lng; Gim st tnh trng h thng v nh gi cht lng in nng.II. PHM VI NG DNG Mn hc bo v r le v t ng ha cc h Trung cp, Cao ng

Mn hc o lng in

Mn hc th nghim thit b in

Mn hc c s k thut inIII. CU TO V C IM K THUT 1. Cu to thit b

Hp b th nghim r le a chc nng s dng ngun nghch lu sng sine trong vic to tn hiu th nghim. Cc i lng dng, p, tn s v gc pha c iu khin v gim st bng vi iu khin tn hiu s (DSC) 16 bit ca Microchip - DsPIC30F4013

Hnh 1: S khi hp b AN700

Hnh 2: Pannel mt trc ca hp b2. c tnh k thut ca thit b in p ngun cung cp : AC 90-220V/50Hz, DC 220V Tn s iu chnh ca cc ng ra: 30-150 Hz 06 knh dng in c gi tr t 0-10A

03 knh in p c gi tr t 0-150V

Gc pha iu chnh tng pha: 0-359 Ng ra ph DC: 110V Ng ra ph AC: 110V S lng knh Analog: 8, 0-10V , 0-10mA, 0-5V phn gii 10 bit S lng knh Digital: 6, cc i in p vo 24V Mn hnh hin th: Mn hnh LCD chu c nh sng ban ngy, kch thc 240x128.

Bn phm iu khin: Bn phm 4x4, thuc loi phm mn. Giao tip: Giao tip my tnh qua RS232 hoc Ethernet. Giao din HMI: Thun tin cho ngi s dng bi tnh n gin trc quan v ngn ng hin th bng ting Anh. Kh nng ti cu hnh nng cp : C Cp chnh xc: sai s ti a 1% ca tt c cc knh Kch thc : 40x30x40 cm

Khi lng: 15 kg Cng sut tiu th: Cc i 800W iu kin mi trng: Lm vic n nh trong mi trng t nhin nhit khng qu 400C v cao di 1000 m so vi mt nc bin.

Thi hn ti kim nh: m bo tnh chnh xc ca thit b th nghim ngh sau mi nm mt ln cn phi ti kim nh cc thng s ca thit b th nghim ny. IV. GI THNH THIT BDo thit b lp t l cc thit b c trong nc nn c gi thnh thp, cc linh kin c rng ri trn th trng.Gi thnh thit b : 36.500.000 ( ba mi su triu nm trm ngn ng).V. HNG DN S DNG, KHAI THC, BO QUN, SA CHA :

1. Hng dn thao tc: Hnh 3: Cc u vo, u ra kt ni i tng th nghim Trc khi tin hnh th nghim cn phi thit lp cc tham s v tin trnh iu chnh in p, dng in th nghim. Th tc tin hnh nh sau:Khi ng thit b ch cho mn hnh hin th Menu chnh: Hnh 4: Mn hnh hin th lc khi ngn phm Enter, chn phm chc nng tng ng theo hng dn trn mn hnh Menu chnh, gi s chng ta mun th r le qu dng in th ln lt tin hnh thao tc nh sau:n phm 1 chn th nghim r le: Hnh 5: Mn hnh la chn chc nng th nghim

n phm 1 th r le qu dng in: Hnh 6-La chn chng loi r le th nghimTip tc n phm 1 vo phn ci t h thng:

Hnh 7- Thit lp tham s ca bo v qu dng

Nhp t bn phm cc gi tr tnh ton cho th nghim vo cc Menu chc nng I>, I>>, TON (Thi gian time out ca h thng),FREQ (tn s)

n phm Enter xc nhn tng thng s nhp.Sau khi ci t cc tham s th nghim hon tt th kim tra li ln na s ni dy trc khi n phm Start (F1) bt u qu trnh th nghim. Hnh 8: Tin trnh th nghim r le qu dngCc r le khc tin hnh tng t theo cc phm chc nng trn mn hnh hin th. Kt qu th nghim s hin th trc tip ln mn hnh nh trn.( Nu n phm Start m thit b khng thc hin lnh khi ng tin trnh th nghim hoc dng, p khng c a vo ra r le th cn phi xem xt li thng s ci t cng nh tip xc ca cc u dy ni.( Phi s dng cc ph kin c trang b km theo thit b c c cc thng s th nghim chnh xc v an ton cho thit b, con ngi.2. Cc s th nghim: Th nghim r le qu dng in:

Hnh 4: S th nghim r le dng in Th nghim r le in p: Hnh 5: S th nghim r le in p

Chn Menu Over-Under Voltage Protection sau tin hnh ci t cc tham s qu in p theo tnh ton. Tin hnh kt ni dy nh s th nghim. Cc thao tc hon ton tng t nh rle qu dng in. Th nghim r le nh hng cng sut:

Rle nh hng cng sut c hai u vo tc ng, mt u l dng in cn u kia l in p. Rle nh hng cng sut s tc ng khi chiu ngn mch i t thanh gp vo ng dy. Vic th nghim r le nh hng cng sut phi tin hnh trn c hai hng cng sut(cng chiu v ngc chiu cng sut).

Hnh 6: S th nghim r le nh hng cng sutMch dng in v in p c kt ni n ng ra U1, I1 ca hp b th nghim.

tin hnh th nghim r le cng sut ta vo phn Menu chn Directional Relay Test, sau thit lp cc gi tr dng in, in p v gc pha gia dng in v in p th nghim. Thit lp thi gian Time out nu bo v khng tc ng. Sau tin hnh th nghim v ly kt qu.3. Bo qun:Thit b c bo qun km theo v hp c chng m i km, nu qu 1 thng khng a vo s dng th trc khi ng in phi t trong mi trng c m di 40% lin tc trong 3 gi. 4. Sa cha:Mi vic sa cha, nng cp phn mm c lin quan n thit b ny u phi c thc hin di s hng dn ca tc gi v phi c kim tra li cc thng s sau khi sa cha xong. Qung Nam, ngy 05 thng 5 nm 2013 Tc gi

L Duy Nhn Phm Vn Hi Nguyn Lc An Vi iu khin tn hiu s (DSC) DsPic30F4013

ng b thi gian

Ngun cung cp

Giao tip ngi dng

o thi gian

o lng dng, p, cng sut

iu khin

pha, tn s,

bin

i

tng

th

Ngun nghch lu mt pha

Ngun nghch lu mt pha

Ngun nghch lu mt pha

Ngun nghch lu mt pha

Ngun nghch lu mt pha

Ngun nghch lu mt pha

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