Lub kaum sab xis sib txawv ntawm ob lub zog electromotive

1. Dab tsi yog qhov sib txawv tseem ceeb ntawm kev hloov hluav taws xob thaum lub sij hawm oscillation thiab luv Circuit Court?

1) Nyob rau hauv tus txheej txheem ntawm oscillation, hluav taws xob kom muaj nuj nqis txiav txim los ntawm lub theem kaum sib txawv ntawm lub electromotive

Lub zog ntawm cov tshuab hluav taws xob hauv kev ua haujlwm sib luag yog sib npaug, thaum lub zog hluav taws xob hauv luv luv yog nrawm.

2) Nyob rau hauv tus txheej txheem ntawm oscillation, lub kaum sab xis ntawm voltages ntawm ib qho chaw ntawm lub hwj chim daim phiaj hloov nrog qhov sib txawv ntawm

lub kaum sab xis ntawm qhov system electromotive zog, thaum lub kaum sab xis ntawm tam sim no thiab voltage yog qhov pib tsis hloov

thaum lub sij hawm luv luv.

3) Nyob rau hauv tus txheej txheem ntawm oscillation, lub system yog symmetrical, yog li tsuas muaj ib tug zoo ib feem ntawm cov hluav taws xob.

Qhov ntau, thiab qhov tsis zoo ib ntus lossis xoom ntu ntu yuav inevitably tshwm sim hauv hluav taws xob ntau thaum lub sijhawm

luv luv.

2. Lub hauv paus ntsiab lus ntawm oscillation thaiv cov cuab yeej siv dav hauv kev tiv thaiv kev deb tam sim no yog dab tsi?

Hom twg muaj?

Nws yog tsim raws li qhov ceev ntawm kev hloov tam sim no thaum lub sij hawm oscillation system thiab txhaum thiab qhov sib txawv ntawm txhua tus

kev ua ntu zus.Feem ntau siv yog oscillation thaiv cov cuab yeej tsim los ntawm cov khoom tsis zoo sib xws

los yog fractional sequence increments.

3. Dab tsi yog qhov kev faib tawm ntawm xoom ntu tam sim no cuam tshuam txog thaum lub caij luv luv tshwm sim hauv qhov nruab nrab ncaj qha hauv av?

Kev faib tawm ntawm xoom ib ntus tam sim no tsuas yog cuam tshuam nrog xoom ntu reactance ntawm qhov system.Qhov loj ntawm xoom

reactance nyob ntawm lub peev xwm ntawm grounding transformer nyob rau hauv lub system, tus naj npawb thiab txoj hauj lwm ntawm nruab nrab point

hauv av.Thaum tus naj npawb ntawm transformer neutral point grounding yog nce los yog tsawg, qhov zero sequence

reactance network ntawm lub kaw lus yuav hloov, yog li hloov qhov kev faib tawm ntawm xoom ntu tam sim no.

4. Dab tsi yog cov khoom ntawm HF channel?

Nws yog tsim los ntawm high zaus transceiver, siab zaus cable, siab zaus yoj cuab, ua ke lim, coupling

capacitor, kis kab mob thiab lub ntiaj teb.

5. Dab tsi yog lub hauv paus ntsiab lus ntawm kev tiv thaiv theem sib txawv?

Ncaj qha piv rau theem tam sim no ntawm ob sab ntawm txoj kab tiv thaiv.Yog tias qhov kev taw qhia zoo ntawm tam sim no ntawm txhua sab

yog teev kom ntws los ntawm lub tsheb npav mus rau kab, qhov sib txawv ntawm qhov tam sim no ntawm ob sab yog 180 degrees nyob rau hauv ib txwm muaj

thiab sab nraud luv Circuit Court faults.Nyob rau hauv lub luv luv Circuit Court txhaum, yog lub theem sib txawv ntawm lub electromotive

quab yuam vectors ntawm ob qhov kawg dheev tshwm sim, theem sib txawv ntawm qhov tam sim no ntawm ob qhov kawg yog xoom.Yog li ntawd, theem

kev sib raug zoo ntawm lub hwj chim zaus tam sim no yog kis mus rau sab nraud los ntawm kev siv cov teeb liab siab.Cov

cov cuab yeej tiv thaiv tau nruab rau ntawm ob sab ntawm txoj kab ua raws li qhov tau txais cov teeb liab siab uas sawv cev

theem tam sim no ntawm ob sab thaum lub kaum sab xis yog xoom, kom lub Circuit Court breakers ntawm ob sab mus rau tib yam

lub sij hawm, Yog li ua kom tiav lub hom phiaj ntawm kev tshem tawm ceev ceev.

6. Kev tiv thaiv roj av yog dab tsi?

Thaum lub transformer tsis ua hauj lwm, vim cua sov los yog arc hlawv ntawm lub luv luv-circuit point, transformer roj ntim expands,

lub siab yog generated, thiab roj yog generated los yog decomposed, ua rau cov roj ntws rushing mus rau lub conservator, roj theem

poob, thiab cov roj relay tiv tauj txuas nrog, uas ua rau lub Circuit Court breaker tripping.Qhov kev tiv thaiv no yog hu ua kev tiv thaiv roj.

7. Dab tsi yog qhov kev tiv thaiv roj?

1) Polyphase luv Circuit Court txhaum nyob rau hauv transformer

2) Tig kom tig luv luv, tig los tig luv luv nrog cov tub ntxhais hlau lossis sab nraud luv luv

3).Core tsis ua hauj lwm

4) Roj theem poob los yog xau

5) Kev sib cuag tsis zoo ntawm kais hloov lossis vuam tsis zoo

8. Dab tsi yog qhov sib txawv ntawm kev tiv thaiv kev sib txawv ntawm qhov sib txawv thiab kev tiv thaiv roj?

Lub transformer sib txawv tiv thaiv yog tsim raws li lub hauv paus ntsiab lus ntawm circulating tam sim no txoj kev, thaum lub

kev tiv thaiv roj tau teeb tsa raws li cov yam ntxwv ntawm cov roj thiab cov roj ntws los ntawm kev ua haujlwm sab hauv ntawm lub transformer.

Lawv cov hauv paus ntsiab lus txawv, thiab qhov kev tiv thaiv kuj txawv.Kev tiv thaiv sib txawv yog qhov kev tiv thaiv tseem ceeb

ntawm transformer thiab nws qhov system, thiab cov kab tawm kuj yog qhov kev tiv thaiv kev sib txawv.Kev tiv thaiv roj yog qhov tseem ceeb

kev tiv thaiv nyob rau hauv cov ntaub ntawv ntawm internal txhaum ntawm transformer.

9. Lub luag haujlwm ntawm kev thim rov qab yog dab tsi?

1) Nyob rau hauv cov ntaub ntawv ntawm ib ntus tsis ua hauj lwm ntawm txoj kab, lub hwj chim mov yuav tsum tau rov qab sai sai los txhim kho kev ntseeg tau ntawm lub hwj chim mov.

2) Rau high-voltage kis kab nrog ob sab fais fab mov, kev ruaj ntseg ntawm kev ua haujlwm sib luag ntawm cov kab ke tuaj yeem

tau txhim kho, yog li txhim kho qhov sib kis tau ntawm kab.

3) Nws tuaj yeem kho qhov tsis tseeb tripping tshwm sim los ntawm kev tsis zoo ntawm Circuit Court breaker mechanism lossis relay misoperation.

10. Dab tsi yuav tsum tau rov qab cov cuab yeej ua tau raws li?

1) Kev ua ceev ceev thiab xaiv theem tsis siv neeg

2) Tsis pub muaj ntau qhov sib txawv

3) Tsis siv neeg rov pib dua tom qab ua tiav

4).Manual tripping los yog phau ntawv kaw yuav tsis rov kaw thaum muaj kab txhaum

11. Yuav ua li cas rov qab ua ke ua haujlwm?

Ib theem txhaum, ib-theem reclosing, peb-theem tripping tom qab reclosing mus tas li txhaum;Phase rau theem txhaum

trips peb theem, thiab peb theem sib tshooj.

12. Peb-theem reclosing ua haujlwm li cas?

Txhua yam kev ua txhaum kev mus ncig peb theem, peb theem rov qab, thiab mus tas li ua txhaum peb theem.

 
13. Ib-theem rov qab ua haujlwm li cas?

Ib theem txhaum, ib theem coincidence;Theem mus rau theem txhaum, tsis coincidence tom qab peb-theem tripping.

 
14. Kev tshuaj xyuas dab tsi yuav tsum tau ua rau qhov voltage transformer tshiab muab tso rau hauv kev ua haujlwm lossis kho dua tshiab

thaum nws txuas nrog qhov system voltage?

Ntsuas theem mus rau theem voltage, xoom sequence voltage, voltage ntawm txhua theem ob winding, xyuas theem ib theem zuj zus

thiab kev txiav txim siab theem

15. Cov khoom siv tiv thaiv dab tsi yuav tsum tiv thaiv qhov ntsuas hluav taws xob zaus ntawm 1500V?

110V lossis 220V DC Circuit Court rau hauv av.

16. Cov khoom siv tiv thaiv dab tsi yuav tsum tiv thaiv qhov ntsuas hluav taws xob zaus ntawm 2000V?

1).Lub hauv paus rau hauv av Circuit Court ntawm AC voltage transformer ntawm lub cuab yeej;

2).Lub hauv paus rau hauv av Circuit Court ntawm AC tam sim no transformer ntawm lub cuab yeej;

3) Backplane kab rau hauv av Circuit Court ntawm cov cuab yeej (lossis npo);

17. Cov khoom siv tiv thaiv dab tsi yuav tsum tiv thaiv qhov ntsuas hluav taws xob zaus ntawm 1000V?

Txhua khub ntawm kev sib cuag rau hauv av Circuit Court ua haujlwm hauv 110V lossis 220V DC Circuit Court;Nruab nrab ntawm txhua khub ntawm kev sib cuag, thiab

nruab nrab ntawm dynamic thiab static kawg ntawm kev sib cuag.

18. Cov khoom siv tiv thaiv twg yuav tsum tiv thaiv hluav taws xob ntsuas hluav taws xob ntawm 500V?

1) DC logic Circuit Court rau hauv av Circuit Court;

2) DC logic Circuit Court rau high-voltage circuit;

3) 18 ~ 24V Circuit Court rau hauv av nrog ntsuas voltage;

19. Qhia luv luv txog cov qauv ntawm electromagnetic intermediate relay?

Nws yog tsim los ntawm electromagnet, coil, armature, tiv tauj, caij nplooj ntoos hlav, thiab lwm yam.

20. Qhia luv luv txog cov qauv ntawm DX teeb liab relay?

Nws yog tsim los ntawm electromagnet, coil, armature, dynamic thiab zoo li qub kev sib cuag, teeb liab board, thiab lwm yam.

21. Lub luag haujlwm tseem ceeb ntawm cov khoom siv tiv thaiv relay yog dab tsi?

Thaum lub tshuab hluav taws xob tsis ua haujlwm, qee cov khoom siv hluav taws xob tsis siv neeg siv tau sai sai tshem tawm qhov txhaum ntawm

lub zog system.Thaum cov xwm txheej txawv txav tshwm sim, cov teeb liab raug xa mus rau lub sijhawm kom nqaim qhov txhaum ntau, txo

qhov ua txhaum poob thiab xyuas kom muaj kev nyab xeeb ntawm kev ua haujlwm.

22. Kev tiv thaiv kev deb yog dab tsi?

Nws yog cov cuab yeej tiv thaiv uas qhia txog qhov hluav taws xob nyob deb ntawm kev teeb tsa kev tiv thaiv mus rau qhov txhaum

thiab txiav txim siab lub sijhawm ua raws li qhov kev ncua deb.

23. Qhov kev tiv thaiv siab yog dab tsi?

Ib theem kis tau tus mob yog siv raws li high-frequency channel mus kis high-frequency tam sim no, thiab ob

ib nrab ntawm kev tiv thaiv ntawm lub zog zaus hluav taws xob ntau (xws li theem tam sim no, kev taw qhia fais fab) lossis lwm yam

ntau qhov cuam tshuam ntawm ob qho kawg ntawm txoj kab txuas nrog raws li kev tiv thaiv tseem ceeb ntawm txoj kab tsis muaj kev cuam tshuam cov

sab nraud txhaum ntawm kab.

24. Qhov zoo thiab qhov tsis zoo ntawm kev tiv thaiv nyob deb yog dab tsi?

Qhov kom zoo dua yog siab rhiab heev, uas tuaj yeem ua kom ntseeg tau tias cov kab txhaum tuaj yeem xaiv tshem tawm qhov txhaum hauv ib qho.

lub sij hawm luv luv, thiab tsis cuam tshuam los ntawm qhov system ua haujlwm hom thiab daim ntawv ua txhaum.Nws qhov tsis zoo yog tias thaum lub

kev tiv thaiv dheev poob lub AC voltage, nws yuav ua rau kev tiv thaiv malfunction.Vim muaj kev tiv thaiv impedance

ua thaum ntsuas tus nqi impedance yog sib npaug los yog tsawg dua qhov teeb tsa impedance tus nqi.Yog hais tias qhov voltage dheev

ploj lawm, kev tiv thaiv yuav ua yuam kev.Yog li ntawd, cov kev ntsuas sib raug yuav tsum tau ua.

25. Dab tsi yog high-frequency locking directional tiv thaiv?

Lub hauv paus ntsiab lus ntawm high-frequency blocking directional tiv thaiv yog raws li kev sib piv cov lus qhia lub hwj chim rau

ob sab ntawm txoj kab tiv thaiv.Thaum lub zog hluav taws xob luv luv ntawm ob sab ntws los ntawm lub tsheb npav mus rau kab, kev tiv thaiv

yuav coj mus txawv tebchaws.Txij li thaum lub high-frequency channel tsis muaj tam sim no ib txwm, thiab thaum muaj kev txhaum sab nraud tshwm sim, sab

nrog rau qhov tsis zoo lub zog kev taw qhia xa high-frequency blocking signals los thaiv kev tiv thaiv ntawm ob sab, nws yog hu ua

high-frequency thaiv kev taw qhia kev tiv thaiv.

26. Kev tiv thaiv kev tiv thaiv kev deb yog dab tsi?

Kev tiv thaiv ntau zaus yog kev tiv thaiv kom paub qhov ceev ntawm tag nrho cov kab, tab sis nws tsis tuaj yeem siv raws li qhov

thaub qab tiv thaiv tsheb npav thiab cov kab uas nyob ib sab.Txawm hais tias kev tiv thaiv nyob deb tuaj yeem ua lub luag haujlwm ntawm kev tiv thaiv kev tiv thaiv tsheb npav

thiab cov kab uas nyob ib sab, nws tsuas tuaj yeem raug tshem tawm sai sai thaum muaj qhov yuam kev tshwm sim li ntawm 80% ntawm cov kab.Ntau zaus

thaiv kev tiv thaiv nyob deb ua ke nrog kev tiv thaiv ntau zaus nrog kev tiv thaiv impedance.Nyob rau hauv cov ntaub ntawv ntawm internal txhaum,

tag nrho cov kab tuaj yeem raug txiav tawm sai sai, thiab kev tiv thaiv kev tiv thaiv kev ua haujlwm tuaj yeem ua si thaum lub tsheb npav thiab cov kab uas nyob ib sab.

27. Dab tsi yog qhov kev tiv thaiv cov ntawv xovxwm uas yuav tsum tau muab tshem tawm thaum lub sij hawm tshuaj xyuas kev tiv thaiv relay

cov khoom siv hauv peb lub hoobkas?

(1) Ua tsis tiav pib nias phaj;

(2) Tsawg impedance tiv thaiv ntawm generator transformer unit;

(3) Zero sequence tam sim no tiv thaiv pluaj ntawm high voltage sab ntawm lub ntsiab transformer;

28. Thaum PT tawg, cov khoom siv tiv thaiv twg yuav tsum raug tawm?

(1) AVR ntaus ntawv;

(2) Standby fais fab tsis siv neeg hloov khoom siv;

(3) Kev tiv thaiv kev poob siab;

(4) Stator interturn tiv thaiv;

(5) Tsawg impedance tiv thaiv;

(6) Tsawg voltage lockout overcurrent;

(7) Tsawg voltage ntawm tsheb npav;

(8) Kev tiv thaiv deb;

29. Qhov kev tiv thaiv twg ntawm SWTA yuav mus rau 41MK hloov?

(1) OXP overexcitation tiv thaiv peb ntu ua haujlwm;

(2) 1.2 zaug V / HZ ncua rau 6 vib nas this;

(3) 1.1 npaug ntawm V / HZ ncua rau 55 vib nas this;

(4) ICL instantaneous tam sim no limiter ua haujlwm hauv peb ntu;

30. Dab tsi yog qhov kev ua haujlwm ntawm inrush tam sim no thaiv cov khoom ntawm qhov sib txawv tiv thaiv ntawm lub ntsiab transformer?

Ntxiv nrog rau kev ua haujlwm ntawm kev tiv thaiv maloperation ntawm transformer nyob rau hauv inrush tam sim no, nws tseem tuaj yeem tiv thaiv maloperation

tshwm sim los ntawm tam sim no transformer saturation nyob rau hauv cov ntaub ntawv ntawm faults sab nraum qhov chaw tiv thaiv.